installation instructions - sigler...
TRANSCRIPT
48LCSingle Package RooftopGas Heating/Electric Cooling Unitwith Puronr (R---410A) RefrigerantSizes: 04, 05, 06
Installation InstructionsNOTE: Read the entire instruction manual before startingthe installation
TABLE OF CONTENTS
SAFETY CONSIDERATIONS 2. . . . . . . . . . . . . . . . . . . .
INSTALLATION 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Jobsite Survey 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Step 1 -- Plan for Unit Location 6. . . . . . . . . . . . . . . . . .
Roof Mount 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Step 2 -- Plan for Sequence of Unit Installation 7. . . . . .
Curb--Mount Installation 7. . . . . . . . . . . . . . . . . . . . .
Pad--Mount Installation 7. . . . . . . . . . . . . . . . . . . . . .
Frame--Mount Installation 7. . . . . . . . . . . . . . . . . . . .
Step 3 -- Inspect Unit 7. . . . . . . . . . . . . . . . . . . . . . . . . . .
Step 4 -- Provide Unit Support 7. . . . . . . . . . . . . . . . . . .
Roof Curb Mount 7. . . . . . . . . . . . . . . . . . . . . . . . . .
Slab Mount (Horizontal Units Only) 7. . . . . . . . . . .
Alternate Unit Support(In Lieu of Curb or Slab Mount) 7. . . . . . . . . . . . . .
Step 5 -- Field Fabricate Ductwork 9. . . . . . . . . . . . . . . .
Step 6 -- Rig and Place Unit 9. . . . . . . . . . . . . . . . . . . . .
Positioning on Curb 9. . . . . . . . . . . . . . . . . . . . . . . .
Step 7 -- Convert to Horizontal and ConnectDuctwork 11. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Step 8 -- Install Outside Air Hood 11. . . . . . . . . . . . . . .
Economizer Hood Package Removal and Setup —Factory Option 11. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Economizer Hood 12. . . . . . . . . . . . . . . . . . . . . . . . .
Step 9 -- Units with Hinged Panels Only 12. . . . . . . . . .
Step 10 -- Install Flue Hood 13. . . . . . . . . . . . . . . . . . . .
Step 11-- Install Gas Piping 13. . . . . . . . . . . . . . . . . . . . .
Factory--Option Thru--Base Connections(Gas Connections) 14. . . . . . . . . . . . . . . . . . . . . . . . .
Step 12 -- Install External Condensate Trap and Line 16. .
Step 13 -- Make Electrical Connections 16. . . . . . . . . . .
Field Power Supply 16. . . . . . . . . . . . . . . . . . . . . . . .
Units with Factory--Installed Non--FusedDisconnect or HACR 23. . . . . . . . . . . . . . . . . . . . . .
Units without Factory--Installed Non--FusedDisconnect or HACR 24. . . . . . . . . . . . . . . . . . . . . .
All Units 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Convenience Outlets 24. . . . . . . . . . . . . . . . . . . . . . .
HACR 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Factory--Option Thru--Base Connections(Electrical Connections) 26. . . . . . . . . . . . . . . . . . . .
Units without Thru--Base Connections 26. . . . . . . . .
Field Control Wiring 26. . . . . . . . . . . . . . . . . . . . . . .
Thermostat 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unit without Thru--Base Connection Kit 27. . . . . . .
Heat Anticipator Settings 27. . . . . . . . . . . . . . . . . . .
Humidi--MiZerR Control Connections 27. . . . . . . . . .
Humidi--MiZer -- Space RH Controller 27. . . . . . . .
EconoMi$er X (Factory Option) 29. . . . . . . . . . . . . . .
ComfortLINK (Factory Option) 29. . . . . . . . . . . . . . .
RTU Open Control System 31. . . . . . . . . . . . . . . . . . .
Supply Air Temperature (SAT) Sensor 34. . . . . . . . .
Outdoor Air Temperature (OAT) Sensor 35. . . . . . .
EconoMi$er2 35. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Field Connections 35. . . . . . . . . . . . . . . . . . . . . . . . . .
Space Temperature (SPT) Sensors 35. . . . . . . . . . . .
Indoor Air Quality (CO2) Sensor 36. . . . . . . . . . . . .
Outdoor Air Quality Sensor 37. . . . . . . . . . . . . . . . .
Space Humidity Sensor or Humidistat 37. . . . . . . . .
Smoke Detector/Fire Shutdown (FSD) 38. . . . . . . . .
Connecting Discrete Inputs 38. . . . . . . . . . . . . . . . . .
Communication Wiring -- Protocols 39. . . . . . . . . . . .
General 39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Local Access 40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RTU Open Troubleshooting 40. . . . . . . . . . . . . . . . .
Outdoor Air Enthalpy Control 41. . . . . . . . . . . . . . . . .
Differential Enthalpy Control 41. . . . . . . . . . . . . . . .
2
Return Air Enthalpy Sensor 41. . . . . . . . . . . . . . . . .
Smoke Detectors 42. . . . . . . . . . . . . . . . . . . . . . . . . . .
Step 14 -- Adjust Factory--Installed Options 47. . . . . . . .
Step 15 -- Install Accessories 47. . . . . . . . . . . . . . . . . . .
APPENDIX -- VFD Operation with Remote Keypad 48. .
START--UP CHECKLIST 58. . . . . . . . . . . . . . . . . . . . . . .
SAFETY CONSIDERATIONSImproper installation, adjustment, alteration, service,maintenance, or use can cause explosion, fire, electricalshock or other conditions which may cause personalinjury or property damage. Consult a qualified installer,service agency, or your distributor or branch forinformation or assistance. The qualified installer oragency must use factory--authorized kits or accessorieswhen modifying this product. Refer to the individualinstructions packaged with the kits or accessories wheninstalling.
Follow all safety codes. Wear safety glasses and workgloves. Use quenching cloths for brazing operations andhave a fire extinguisher available. Read these instructionsthoroughly and follow all warnings or cautions attached tothe unit. Consult local building codes and appropriatenational electrical codes (in USA, ANSI/NFPA70,National Electrical Code (NEC); in Canada, CSA C22.1)for special requirements.
It is important to recognize safety information. This is thesafety--alert symbol . When you see this symbol on theunit and in instructions or manuals, be alert to thepotential for personal injury.
Understand the signal words DANGER, WARNING,CAUTION, and NOTE. These words are used with thesafety--alert symbol. DANGER identifies the most serioushazards which will result in severe personal injury ordeath. WARNING signifies hazards which could result inpersonal injury or death. CAUTION is used to identifyunsafe practices, which may result in minor personalinjury or product and property damage. NOTE is used tohighlight suggestions which will result in enhancedinstallation, reliability, or operation.
FIRE, EXPLOSION HAZARD
Failure to follow this warning could result in personalinjury or death.
Disconnect gas piping from unit when leak testing atpressure greater than 0.5 psig (3450 Pa). Pressuresgreater than 0.5 psig (3450 Pa) will cause gas valvedamage resulting in hazardous condition. If gas valveis subjected to pressure greater than 0.5 psig (3450Pa), it must be replaced before use. When pressuretesting field--supplied gas piping at pressures of 0.5psig (3450 Pa) or less, a unit connected to such pipingmust be isolated by closing the manual gas valve.
! WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could cause personalinjury or death.
Before performing service or maintenance operationson unit, always turn off main power switch to unit andinstall lock(s) and lockout tag(s). Unit may have morethan one power switch.
! WARNING
UNIT OPERATION AND SAFETY HAZARD
Failure to follow this warning could cause personalinjury, death and/or equipment damage.
Puronr (R--410A) refrigerant systems operate athigher pressures than standard R--22 systems. Do notuse R--22 service equipment or components on Puronrefrigerant equipment.
! WARNING
PERSONAL INJURY AND ENVIRONMENTALHAZARD
Failure to follow this warning could cause personalinjury or death.
Relieve pressure and recover all refrigerant beforesystem repair or final unit disposal.
Wear safety glasses and gloves when handlingrefrigerants. Keep torches and other ignition sourcesaway from refrigerants and oils.
! WARNING
CUT HAZARD
Failure to follow this caution may result in personalinjury.Sheet metal parts may have sharp edges or burrs. Usecare and wear appropriate protective clothing, safetyglasses and gloves when handling parts and servicingair conditioning equipment.
CAUTION!
48HC
48LC
3
4 8 L C D 0 0 6 A 0 A 5 A 0 A 0 A 01 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
Model Series - WeatherExpertTM
LC - Ultra High Efficiency
Unit Heat Type48 - Gas Heat Packaged Rooftop
Cooling Tons04 - 3 ton05 - 4 ton06 - 5 ton
Heat OptionsD = Low Gas HeatE = Medium Gas HeatF = High Gas HeatL = Low Nox – Low Gas HeatM = Low Nox – Medium Gas HeatN = Low Nox – High Gas HeatS = Low Heat w/ Stainless Steel ExchangerR = Medium Heat w/ Stainless Steel ExchangerT = High Heat w/ Stainless Steel Exchanger(Low Nox models include – Stainless Steel HX)
Sensor OptionsA = NoneB = RA Smoke DetectorC = SA Smoke DetectorD = RA + SA Smoke DetectorE = CO2
F = RA Smoke Detector and CO2
G = SA Smoke Detector and CO2
H = RA + SA Smoke Detector and CO2
Indoor Fan Options0 = Standard Electrical (Direct) Drive x13 ECM Motor2 = Medium Static Belt Drive with VFD controller3 = High Static Belt Drive with VFD controller
Refrig. Systems Options0 = Two stage cooling capacity A = Two stage cooling capacity with Humidi-MiZer System
Coil Options: Fin/Tube (Condenser- Evaporator - Hail Guard)A = Al/Cu - Al/CuB = Precoat Al/Cu - Al/CuC = E-coat Al/Cu - Al/CuD = E-coat Al/Cu - E-coat Al/CuE = Cu/Cu - Al/CuF = Cu/Cu - Cu/CuM = Al/Cu - Al/Cu — Louvered Hail GuardN = Precoat Al/Cu - Al/Cu — Louvered Hail GuardP = E-coat Al/Cu - Al/Cu — Louvered Hail GuardQ = E-coat Al/Cu - E-coat Al/Cu — Louvered Hail GuardR = Cu/Cu - Al/Cu — Louvered Hail GuardS = Cu/Cu - Cu/Cu — Louvered Hail Guard
Voltage1 = 575/3/605 = 208-230/3/606 = 460/3/60
Design RevisionA = Factory Design Revision
Base Unit Controls0 = Base Electromechanical Controls1 = RTU Open Multi-Protocol Controller2 = ComfortLink Controls*
Intake / Exhaust OptionsA = NoneB = Temperature Economizer with Barometric ReliefE = Enthalpy Economizer with Barometric ReliefN = Ultra Low Leak Temperature Economizer with Barometric ReliefR = Ultra Low Leak Enthalpy Economizer with Barometric Relief
Service Options0 = None1 = Unpowered Convenience Outlet2 = Powered Convenience Outlet3 = Hinged Panels4 = Hinged Panels and Unpowered Convenience Outlet5 = Hinged Panels and Powered Convenience Outlet
Packaging0 = Standard1 = LTL
Electrical Options A = NoneB = HACR Circuit BreakerC = Non-Fused DisconnectD = Thru-The-Base ConnectionsE = HACR Circuit Breaker and Thru-The Base ConnectionsF = Non-Fused Disconnect and Thru-The-Base Connections
Example:Position:
* Not available for units equipped with Humidi-MiZer
C13382
Fig. 1 -- 48LC 04--06 Model Number Nomenclature (Example)
48HC
48LC
4
Horizontal Connections / Economizer
Vertical Connections / Economizer
C12141
Fig. 2 -- Unit Dimensional Drawing
48HC
48LC
5
C12142
Fig. 2 -- Unit Dimensional Drawing (cont.)
C
BA
D
C08337
LOCATION DIMENSION CONDITION
A
48--- in (1219 mm)18--- in (457 mm)18--- in (457) mm12--- in (305 mm)
Unit disconnect is mounted on panelNo disconnect, convenience outlet optionRecommended service clearanceMinimum clearance
B40--- in (1067 mm)36--- in (914 mm)Special
Surface behind servicer is grounded (e.g., metal, masonry wall)Surface behind servicer is electrically non---conductive (e.g., wood, fiberglass)Check sources of flue products within 10--- ft of unit fresh air intake hood
C36--- in (914 mm)18--- in (457 mm)
Side condensate drain is usedMinimum clearance
D
48--- in (1219 mm)42--- in (1067 mm)36--- in (914 mm)Special
No flue discharge accessory installed, surface is combustible materialSurface behind servicer is grounded (e.g., metal, masonry wall, another unit)Surface behind servicer is electrically non---conductive (e.g., wood, fiberglass)Check for adjacent units or building fresh air intakes within 10---ft (3 m) of this unit’s flue outlet
NOTE: Unit not designed to have overhead obstruction. Contact Application Engineering for guidance on any applicationplanning overhead obstruction or for vertical clearances.
Fig. 3 -- Service Clearance Dimensional Drawing
48HC
48LC
6
INSTALLATIONJobsite Survey
Complete the following checks before installation.
1. Consult local building codes and the NEC (NationalElectrical Code) ANSI/NFPA 70 for special installa-tion requirements.
2. Determine unit location (from project plans) or selectunit location.
3. Check for possible overhead obstructions which mayinterfere with unit lifting or rigging.
Step 1 — Plan for Unit Location
Select a location for the unit and its support system (curbor other) that provides for the minimum clearancesrequired for safety. This includes the clearance tocombustible surfaces, unit performance and service accessbelow and around unit as specified in Fig. 3.
NOTE: Consider also the effect of adjacent units.
Be sure that unit is installed such that snow will not blockthe combustion intake or flue outlet.
Unit may be installed directly on wood flooring or onClass A, B, or C roof--covering material when roof curb isused.
Do not install unit in an indoor location. Do not locate airinlets near exhaust vents or other sources of contaminated
air. For proper unit operation, adequate combustion andventilation air must be provided in accordance withSection 5.3 (Air for Combustion and Ventilation) of theNational Fuel Gas Code, ANSI Z223.1 (AmericanNational Standards Institute) and NFPA (National FireProtection Association) 54 TIA----54----84----1. In Canada,installation must be in accordance with the CAN1----B149installation codes for gas burning appliances.
Although unit is weatherproof, avoid locations that permitwater from higher level runoff and overhangs to fall ontothe unit.
Locate mechanical draft system flue assembly at least 4 ft(1.2 m) from any opening through which combustionproducts could enter the building, and at least 4 ft (1.2 m)from any adjacent building (or per local code). Locate theflue assembly at least 10 ft (3.05 m) from an adjacentunit’s fresh air intake hood if within 3 ft (0.91 m) of sameelevation (or per local code). When unit is locatedadjacent to public walkways, flue assembly must be atleast 7 ft (2.1 m) above grade.
Select a unit mounting system that provides adequateheight to allow installation of condensate trap perrequirements. Refer to Step 11 — Install ExternalCondensate Trap and Line – for required trap dimensions.
Roof Mount —
Check building codes for weight distributionrequirements. Unit operating weight is shown in Table 1.
Table 1 – Operating Weights
48LC**UNITS LB (KG)
04 05 06Base Unit 505 (229) 590 (268) 600 (272)
Economizer
Vertical 50 (23) 50 (23) 50 (23)
Horizontal 80 (36) 80 (36) 80 (36)
Humidi---MiZerR System 50 (23) 55 (25) 55 (25)
Cu Fins 25 (11) 43 (20) 56 (25)
Powered Outlet 35 (16) 35 (16) 35 (16)
Curb
14--- in/356 mm 115 (52) 115 (52) 115 (52)
24--- in/610 mm 197 (89) 197 (89) 197 (89)
48HC
48LC
7
Step 2 — Plan for Sequence of Unit Installation
The support method used for this unit will dictate differentsequences for the steps of unit installation. For example,on curb--mounted units, some accessories must beinstalled on the unit before the unit is placed on the curb.Review the following for recommended sequences forinstallation steps.
Curb--mounted Installation —
Install curbInstall field--fabricated ductwork inside curbInstall accessory thru--base service connection package(affects curb and unit) (refer to accessory installationinstructions for details)Prepare bottom condensate drain connection to suitplanned condensate line routing (refer to Step 11 fordetails)Rig and place unitInstall outdoor air hoodInstall flue hoodInstall gas pipingInstall condensate line trap and pipingMake electrical connectionsInstall other accessories
Pad--mounted Installation —
Prepare pad and unit supportsCheck and tighten the bottom condensate drainconnection plugRig and place unitConvert unit to side duct connection arrangementInstall field--fabricated ductwork at unit duct openingsInstall outdoor air hoodInstall flue hoodInstall gas pipingInstall condensate line trap and pipingMake electrical connectionsInstall other accessories
Frame--mounted Installation —
Frame--mounted applications generally follow thesequence for a curb installation. Adapt as required tosuit specific installation plan.
Step 3 — Inspect Unit
Inspect unit for transportation damage. File any claimwith transportation agency.
Confirm before installation of unit that voltage, amperageand circuit protection requirements listed on unit dataplate agree with power supply provided.
Step 4 — Provide Unit Support
Roof Curb Mount —
Accessory roof curb details and dimensions are shown inFig. 4. Assemble and install accessory roof curb inaccordance with instructions shipped with the curb.
NOTE: The gasketing of the unit to the roof curb iscritical for a watertight seal. Install gasket supplied withthe roof curb as shown in Fig. 4. Improperly appliedgasket can also result in air leaks and poor unitperformance.
Curb should be level. This is necessary for unit drain tofunction properly. Unit leveling tolerances are show inFig. 5. Refer to Accessory Roof Curb InstallationInstructions for additional information as required.
Install insulation, cant strips, roofing felt, and counterflashing as shown. Ductwork must be attached to curb andnot to the unit. The accessory thru--the--base power andgas connection package must be installed before the unitis set on the roof curb. If field--installed thru--the--roofcurb gas connections are desired, use factory--supplied1/2--in. pipe coupling and gas plate assembly to mount thethru--the--roof curb connection to the roof curb. Gasconnections and power connections to the unit must befield installed after the unit is installed on the roof curb.
If electric and control wiring is to be routed through thebasepan, attach the accessory thru--the--base serviceconnections to the basepan in accordance with theaccessory installation instructions.
Slab Mount (Horizontal Units Only) —
Provide a level concrete slab that extends a minimum of6 in. (150 mm) beyond unit cabinet. Install a gravel apronin front of condenser coil air inlet to prevent grass andfoliage from obstructing airflow.
NOTE: Horizontal units may be installed on a roof curbif required.
Alternate Unit Support(In Lieu of Curb or Slab Mount) —
A non--combustible sleeper rail can be used in the unitcurb support area. If sleeper rails cannot be used, supportthe long sides of the unit with a minimum of 3 equallyspaced 4--in. x 4--in. (102 mm x 102 mm) pads on eachside.
48HC
48LC
8
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SU
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C13310Fig. 4 -- Roof Curb Details
48HC
48LC
9
A-B0.5” (13)
B-C1.0” (25)
A-C1.0” (25)
MAXIMUM ALLOWABLEDIFFERENCE IN. (MM)
C06110Fig. 5 -- Unit Leveling Tolerances
Step 5 — Field Fabricate Ductwork
Cabinet return-air static pressure (a negative condition)shall not exceed 0.35 in. wg (87 Pa) with economizer or0.45 in. wg (112 Pa) without economizer.
For vertical ducted applications, secure all ducts to roof curband building structure. Do not connect ductwork to unit.
Fabricate supply ductwork so that the cross sectionaldimensions are equal to or greater than the unit supplyduct opening dimensions for the first 18 in. (458 mm) ofduct length from the unit basepan.
Insulate and weatherproof all external ductwork, joints,and roof openings with counter flashing and mastic inaccordance with applicable codes.
Ducts passing through unconditioned spaces must beinsulated and covered with a vapor barrier.
If a plenum return is used on a vertical unit, the returnshould be ducted through the roof deck to comply withapplicable fire codes.
A minimum clearance is not required around ductwork.
PROPERTY DAMAGE HAZARD
Failure to follow this caution may result in damageto roofing materials.
Membrane roofs can be cut by sharp sheet metaledges. Be careful when placing any sheet metal partson such roof.
CAUTION!
Step 6 — Rig and Place Unit
Keep unit upright and do not drop. Spreader bars arerequired. Rollers may be used to move unit across a roof.Level by using unit frame as a reference. See Table 1 andFig. 6 for additional information.
Lifting holes are provided in base rails as shown in Fig. 6.Refer to rigging instructions on unit.
Rigging materials under unit (cardboard to prevent basepan damage) must be removed PRIOR to placing the uniton the roof curb.
When using the standard side drain connection, ensure thered plug in the alternate bottom connection is tight. Do thisbefore setting the unit in place. The red drain pan plug canbe tightened with a 1/2--in. square socket drive extension. Forfurther details see “Step 12 -- Install External CondensateTrap and Line” on page 16.
UNIT DAMAGE HAZARD
Failure to follow this caution may result inequipment damage.
All panels must be in place when rigging. Unit is notdesigned for handling by fork truck when packagingis removed.
CAUTION!
Before setting the unit onto the curb, recheck gasketing oncurb.
Positioning on Curb —
Position unit on roof curb so that the following clearancesare maintained: 1/4 in. (6.4 mm) clearance between theroof curb and the base rail inside the front and rear, 0.0 in.clearance between the roof curb and the base rail inside onthe duct end of the unit. This will result in the distancebetween the roof curb and the base rail inside on thecondenser end of the unit being approximately 1/4 in. (6.4mm).
Although unit is weatherproof, guard against water fromhigher level runoff and overhangs.
Flue vent discharge must have a minimum horizontalclearance of 4 ft (1220 mm) from electric and gas meters,gas regulators, and gas relief equipment. Minimumdistance between unit and other electrically live parts is48 inches (1220 mm).
Flue gas can deteriorate building materials. Orient unit suchthat flue gas will not affect building materials. Locatemechanical draft system flue assembly at least 48 in. (1220mm) from an adjacent building or combustible material.
NOTE: Installation of accessory flue discharge deflectorkit will reduce the minimum clearance to combustiblematerial to 18 in. (460 mm).
After unit is in position, remove rigging skids andshipping materials.
48HC
48LC
10
ALL PANELS MUST BE IN PLACE WHEN RIGGING.TOUS LES CAPOTS DOIVENT ÊTRE EN PLACE AVANT LE LEVAGE
CAUTION - NOTICE TO RIGGERS:AVERTISSEMENT - REMARQUE À L’ATTENTION DES MONTEURS
• Hook rigging shackles through holes in base rail, as shown in Detail “A”.• Use wooden top skid, when rigging, to prevent rigging straps from damaging unit.• Max weight includes base unit plus shipping pallet plus all available FIOP's which could be on that size unit.• "B" dimension is based on base unit (PAC no heat or YAC w/low heat) plus economizer option only. This dimension may vary slightly with units configured with other FIOP options.• Spreader bars required to lift and transport the unit.• Accrocher les manilles des élingues de levages dans les trous situés dans le rail de base comme indiqué au Détail « A ».• Utiliser des cales en bois lors du levage pour éviter que les élingues n’endommagent le haut de l’appareil.• Le poids maximum inclut la configuration de base, le poids de la palette d'expédition, ainsi que toutes les options pouvant être installées en usine (FIOP) pour la plateforme sélectionnée.• La dimension de "B" provient de la configuration de base (PAC sans chauffage ou YAC chauffage au gaz natufrel) qui inclut l'option economizer seulement. Cette dimension peut varier légèrement en fonction des différentes options sélectionnées, installées en usine (FIOP).• Barres d'écartement requises pour soulever et transporter l'unité.
50LC_00450LC_00550LC_00648LC_00448LC_00548LC_006
MAX WEIGHTLB KG
700830865760895930
318377393345407423
A BIN MM IN MM IN MM
74.574.574.574.574.574.5
189018901890189018901890
MODEL
48HC500030 A
C
925925915965965955
36.536.536.038.038.037.5
33.541.541.533.541.541.5
85010551055850
10551055
DETAIL ADÉTAIL « A »
PLACE ALL SEAL STRIP IN PLACEBEFORE PLACING UNIT ON ROOF CURB.
INSTALLER TOUTES LES BANDESD’ISOLATION EN PLACE AVANT DEPLACER L’APPAREIL SUR LE REBORDDE TOIT.
DUCT ENDPASSAGES CONDUITES
SEE DETAIL “A”
914-1371(36"- 54")
“C”
“B”
“A”
SPREADERBARS
REQUIRED
VOIR DÉTAIL « A »
C12100
Fig. 6 -- Rigging Label
48HC
48LC
11
Step 7 — Convert to Horizontal and ConnectDuctwork (when required)
Unit is shipped in the vertical duct configuration. Unitwithout factory--installed economizer or return air smokedetector option may be field--converted to horizontal ductedconfiguration. To convert to horizontal configuration,remove screws from side duct opening covers and removecovers. Using the same screws, install covers on verticalduct openings with the insulation--side down. Seals aroundduct openings must be tight. See Fig. 7.
C06108
Fig. 7 -- Horizontal Conversion Panels
Field--supplied flanges should be attached to horizontalduct openings and all ductwork should be secured to theflanges. Insulate and weatherproof all external ductwork,joints, and roof or building openings with counter flashingand mastic in accordance with applicable codes.
Do not cover or obscure visibility to the unit’s informativedata plate when insulating horizontal ductwork.
Step 8 — Install Outside Air Hood
Economizer Hood Package Removal and Setup --Factory Option
1. The hood is shipped in knock--down form and must befield assembled. The indoor coil access panel is used asthe hood top while the hood sides, divider and filter arepackaged together, attached to a metal support tray us-ing plastic stretch wrap, and shipped in the return aircompartment behind the indoor coil access panel. Thehood assembly’s metal tray is attached to the basepanand also attached to the damper using two plastic tie--wraps.
2. To gain access to the hood, remove the filter accesspanel. (See Fig. 8.)
FILTER ACCESS PANEL
OUTDOOR-AIR OPENING ANDINDOOR COIL ACCESS PANEL
COMPRESSORACCESS PANEL
C06023Fig. 8 -- Typical Access Panel Locations
3. Locate the (2) screws holding the metal tray to thebasepan and remove. Locate and cut the (2) plastictie--wraps securing the assembly to the damper. (SeeFig. 9) Be careful to not damage any wiring or cuttie--wraps securing any wiring.
Hood Parts
Plastic Tie WrapQty (2)
Screws for Metal TrayQty (2)
C08639
Fig. 9 -- Economizer Hood Parts Location
4. Carefully lift the hood assembly (with metal tray)through the filter access opening and assemble per thesteps outlined in Economizer Hood, below.
48HC
48LC
12
Economizer Hood —
NOTE: If the power exhaust accessory is to be installedon the unit, the hood shipped with the unit will not beused and must be discarded. Save the aluminum filter foruse in the power exhaust hood assembly.
1. The indoor coil access panel will be used as the top ofthe hood. Remove the screws along the sides and bot-tom of the indoor coil access panel. See Fig. 10.
TOPPANEL
INDOORCOILACCESSPANEL
INDOORCOILACCESSPANEL
CAULKHERE
TOPPANEL
C06025Fig. 10 -- Indoor Coil Access Panel Relocation
2. Swing out indoor coil access panel and insert the hoodsides under the panel (hood top). Use the screwsprovided to attach the hood sides to the hood top. Usescrews provided to attach the hood sides to the unit. SeeFig. 11.
B
TOPPANEL
INDOOR COILACCESS PANEL
19 1/16”SCREW
HOOD DIVIDER
LEFTHOODSIDE
33 3/8”(848mm)
(483mm)
C06026Fig. 11 -- Economizer Hood Construction
3. Remove the shipping tape holding the economizerbarometric relief damper in place (economizer only).
4. Insert the hood divider between the hood sides. SeeFig. 11 and 12. Secure hood divider with 2 screws oneach hood side. The hood divider is also used as thebottom filter rack for the aluminum filter.
5. Open the filter clips which are located underneath thehood top. Insert the aluminum filter into the bottomfilter rack (hood divider). Push the filter into positionpast the open filter clips. Close the filter clips to lockthe filter into place. See Fig. 12.
6. Caulk the ends of the joint between the unit top paneland the hood top.
7. Replace the filter access panel.
DIVIDER
BAROMETRICRELIEF
CLEANABLEALUMINUMFILTER
FILTER
HOOD
FILTERCLIP
OUTSIDEAIR
C08634Fig. 12 -- Economizer Filter Installation
Step 9 — Units with Hinged Panels Only
Relocate latch shipped inside the hinged compressor doorto location shown in Fig. 13 after unit installation.
If the unit does not have hinged panels, skip step 9 andcontinue at step 10.
C12101Fig. 13 -- Compressor Door Latch Location
48HC
48LC
13
Step 10 — Install Flue Hood
Flue hood is shipped screwed to the basepan beside theburner compartment access panel. Remove from shippinglocation and using screws provided, install flue hood andscreen in location shown in Fig. 14.
BLOWERACCESSPANEL
C07081Fig. 14 -- Flue Hood Details
Step 11 — Install Gas Piping
Installation of the gas piping must be accordance withlocal building codes and with applicable national codes.In U.S.A., refer to NFPA 54/ANSI Z223.1 National FuelGas Code (NFGC). In Canada, installation must beaccordance with the CAN/CSA B149.1 and CAN/CSAB149.2 installation codes for gas burning appliances.
This unit is factory equipped for use with Natural Gas fuelat elevations up to 2000 ft (610 m) above sea level. Unitmay be field converted for operation at elevations above2000 ft (610 m) and/or for use with liquefied petroleumfuel. See accessory kit installation instructions regardingthese accessories.
NOTE: Furance gas input rate on rating plate is forinstallation up to 2000 ft (610 m) above sea level. In U.S.A.the input rating for altitudes above 2000 ft (610 m) must bederated by 4% for each 1000 ft (305 m) above sea level. InCanada the input rating must be derated by 10% for altitudesof 2000 ft (610 m) to 4500 ft (1372 m) above sea level.
For natural gas applications, gas pressure at unit gasconnection must not be less than 4 in. wg (996 Pa) or greaterthan 13 in. wg (3240 Pa) while the unit is operating. On48LCF*04--06 (high--heat) units, the gas pressure at unit gasconnection must not be less than 5 in. wg (1245 Pa) orgreater than 13 in. wg (3240 Pa) while the unit is operating.For liquified petroleum applications, the gas pressure mustnot be less than 11 in. wg (2740 Pa) or greater than 13.6 in.wg (3390 Pa) at the unit connection.
Table 2 – Natural Gas Supply Line Pressure Ranges
UNIT MODEL UNIT SIZE MIN MAX
48LC** 04, 05, 06 4.0 in. wg(996 Pa)
13.0 in. wg(3240 Pa)
48LCF*(High Heat units only) 04, 05, 06 5.0 in. wg
(1245 Pa)13.0 in. wg(3240 Pa)
The gas supply pipe enters the unit at the burner accesspanel on the front side of the unit, through the long slot atthe bottom of the access panel. The gas connection to the
unit is made to the 1/2--in. FPT gas inlet port on the unitgas valve
Manifold pressure is factory--adjusted for NG fuel use.Adjust as required to obtain best flame characteristics.
Table 3 – Natural Gas Manifold Pressure Ranges
UNIT MODEL UNIT SIZE HIGH FIRE LOW FIRE
48LCD/E/L/M/S/R* 04, 05, 06 3.5 in. wg(872 Pa)
1.7 in. Wg(423 Pa)
48LCF/N/T*(High Heat units only) 05. 06 3.5 in. wg
(872 Pa)1.7 in. Wg(498 Pa)
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in damageto equipment.
When connecting the gas line to the unit gas valve,the installer MUST use a backup wrench to preventdamage to the valve.
CAUTION!
Install a gas supply line that runs to the unit heatingsection. Refer to the NFPA 54/NFGC or equivalent codefor gas pipe sizing data. Do not use a pipe size smallerthan 1/2--in. Size the gas supply line to allow for amaximum pressure drop of 0.5--in wg (124 Pa) betweengas regulator source and unit gas valve connection whenunit is operating at high--fire flow rate.
The gas supply line can approach the unit in three ways:horizontally from outside the unit (across the roof),thru--curb/under unit basepan (accessory kit required) orthrough unit basepan (factory--option or accessory kitrequired). Consult accessory kit installation instructionsfor details on these installation methods. Observeclearance to gas line components per Fig. 15.
LEGEND
* Field supplied.NOTE: Follow all local codes.
NFGC – National Fuel Gas Code
STEEL PIPENOMINAL DIAMETER
(in.)
SPACING OF SUPPORTSX DIMENSION
(ft)1/2
3/4 or 111/4 or larger
68
10
X
BASE UNIT
BASE RAILROOF CURB
9” MINIMUM CLEARANCEFOR PANEL REMOVAL
MANUAL GASSHUTOFF VALVE*
GASREGULATOR*
48” MINIMUM
DRIP LEGPER NFGC*
FIELD-FABRICATEDSUPPORT*
FROM GAS METER
C11091Fig. 15 -- Gas Piping Guide
(with Accessory Thru--the--Curb Service Connections)
48HC
48LC
14
Factory--Option Thru--Base Connections(Gas Connections)—
This service connection kit consists of a 1/2--in NPT gasadapter fitting (brass), two 1/2--in electrical bulkheadconnectors and a 3/4--in electrical bulkhead connector, allfactory--installed in the embossed (raised) section of theunit basepan in the condenser section.
LOW VOLTAGECONDUITCONNECTOR
HIGH VOLTAGECONDUITCONNECTOR
BRASS FITTING FOR 3 TO 6 TON UNITS.
C13410
Fig. 16 -- Fittings
The thru--base gas connector has male and female threads.The male threads protrude above the basepan of the unit;the female threads protrude below the basepan.
Check tightness of connector lock nuts before connectinggas piping.
Install a 1/2--in NPT street elbow on the thru--base gasfitting. Attach a 1/2--in pipe nipple with minimum lengthof 16--in (406 mm) (field--supplied) to the street elbowand extend it through the access panel at the gas supportbracket. See Fig. 17.
EMBOSSMENT BRASS FITTINGFOR 3-6 TON UNITS
SUPPORTBRACKET
C13411
Fig. 17 -- Gas Line Piping for 3 to 5 Ton Units Only
Other hardware required to complete the installation of thegas supply line will include a manual shutoff valve, asediment trap (drip leg) and a ground--joint union. Apressure regulator valve may also be required (to convert gaspressure from pounds to inches of pressure). The manualshutoff valve must be located within 6--ft (1.83 m) of theunit. The union, located in the final leg entering the unit,
must be located at least 9--in (230 mm) away from theaccess panel to permit the panel to be removed for service.If a regulator valve is installed, it must be located aminimum of 4--ft (1220 mm) away from the unit’s flueoutlet. Some municipal codes require that the manual shutoffvalve be located upstream of the sediment trap. See Figures18 and 19 for typical piping arrangements for gas piping thathas been routed through the sidewall of the curb. See Fig. 20for typical piping arrangement when thru--base is used.Ensure that all piping does not block access to the unit’smain control box or limit the required working space in frontof the control box.
9” (229mm) min
Union
Shut OffValve
DripLeg
Thru-Curb Adapter
Unit Base Rail
C07469Fig. 18 -- Gas Piping
DripLeg
Shut OffValve
Union
Thru-Curb Adapter
BurnerAccessPanel
9” (229mm) min
Unit Base Rail
C07470Fig. 19 -- Gas Piping
48HC
48LC
15
C08018
Fig. 20 -- Gas Piping Thru--Base Connections
When installing the gas supply line, observe local codespertaining to gas pipe installations. Refer to the NFPA54/ANSI Z223.1 NFGC latest edition (in Canada, CAN/CSAB149.1). In the absence of local building codes, adhere tothe following pertinent recommendations:
1. Avoid low spots in long runs of pipe. Grade all pipe1/4--in. in every 15 ft (7 mm in every 5 m) to preventtraps. Grade all horizontal runs downward to risers.Use risers to connect to heating section and to meter.
2. Protect all segments of piping system against physicaland thermal damage. Support all piping with appro-priate straps, hangers, etc. Use a minimum of onehanger every 6 ft (1.8 m). For pipe sizes larger than1/2--in., follow recommendations of national codes.
3. Apply joint compound (pipe dope) sparingly and onlyto male threads of joint when making pipe connec-tions. Use only pipe dope that is resistant to action ofliquefied petroleum gases as specified by local and/ornational codes. If using PTFE (Teflon) tape, ensurethe material is Double Density type and is labeled foruse on gas lines. Apply tape per manufacturer’s in-structions.
4. Pressure--test all gas piping in accordance with localand national plumbing and gas codes before connect-ing piping to unit.
NOTE: Pressure test the gas supply system after the gassupply piping is connected to the gas valve. The supplypiping must be disconnected from the gas valve during thetesting of the piping systems when test pressure is inexcess of 0.5 psig (3450 Pa). Pressure test the gas supplypiping system at pressures equal to or less than 0.5 psig(3450 Pa). The unit heating section must be isolated fromthe gas piping system by closing the external main manualshutoff valve and slightly opening the ground--joint union.
Check for gas leaks at the field--installed andfactory--installed gas lines after all piping connectionshave been completed. Use soap--and--water solution (ormethod specified by local codes and/or regulations).
FIRE OR EXPLOSION HAZARD
Failure to follow this warning could result in personalinjury, death and/or property damage.
S Connect gas pipe to unit using a backup wrench toavoid damaging gas controls.
S Never purge a gas line into a combustion chamber.S Never test for gas leaks with an open flame. Use a
commercially available soap solution madespecifically for the detection of leaks to check allconnections.
S Use proper length of pipe to avoid stress on gascontrol manifold.
! WARNING
NOTE: If orifice hole appears damaged or it is suspectedto have been redrilled, check orifice hole with a numbereddrill bit of correct size. Never redrill an orifice. Aburr--free and squarely aligned orifice hole is essential forproper flame characteristics.
BURNER ORIFICE
A93059
Fig. 21 -- Orifice Hole
48HC
48LC
16
Step 12 — Install External Condensate Trapand Line
The unit has one 3/4-in. condensate drain connection onthe end of the condensate pan and an alternate connectionon the bottom. See Fig. 22. Unit airflow configurationdoes not determine which drain connection to use. Eitherdrain connection can be used with vertical or horizontalapplications.
To use the alternate bottom drain connection, remove thered drain plug from the bottom connection (use a 1/2--in.square socket drive extension) and install it in the sidedrain connection.
The piping for the condensate drain and external trap canbe completed after the unit is in place. See Fig. 23.
DRAIN(FACTORY-INSTALLED)
PLUG
CONDENSATE PAN (SIDE VIEW)
STANDARDSIDE DRAIN
ALTERNATEBOTTOM DRAIN
C08021
Fig. 22 -- Condensate Drain Pan (Side View)
NOTE: Trap should be deep enough to offset maximum unit staticdifference. A 4” (102) trap is recommended.
MINIMUM PITCH1” (25mm) PER10’ (3m) OF LINE
BASE RAIL
OPENVENT
TO ROOFDRAIN
DRAIN PLUG
ROOFCURB
SEE NOTE
2˝ (51) MIN
C08022
Fig. 23 -- Condensate Drain Piping Details
All units must have an external trap for condensatedrainage. Install a trap at least 4-in. (102 mm) deep andprotect against freeze-up. If drain line is installeddownstream from the external trap, pitch the line awayfrom the unit at 1-in. per 10 ft (25 mm in 3 m) of run. Donot use a pipe size smaller than the unit connection(3/4-in.).
Step 13 — Make Electrical Connections
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personalinjury or death.
Do not use gas piping as an electrical ground. Unitcabinet must have an uninterrupted, unbrokenelectrical ground to minimize the possibility ofpersonal injury if an electrical fault should occur. Thisground may consist of electrical wire connected tounit ground lug in control compartment, or conduitapproved for electrical ground when installed inaccordance with NEC (National Electrical Code);ANSI/NFPA 70, latest edition (in Canada, CanadianElectrical Code CSA [Canadian StandardsAssociation] C22.1), and local electrical codes.
! WARNING
NOTE: Field--supplied wiring shall conform with thelimitations of minimum 63_F (33_C) rise.
Field Power Supply —
If equipped with optional Powered Convenience Outlet:The power source leads to the convenience outlet’stransformer primary are not factory connected. Installermust connect these leads according to required operationof the convenience outlet. If an always--energizedconvenience outlet operation is desired, connect thesource leads to the line side of the unit--mounteddisconnect. (Check with local codes to ensure this methodis acceptable in your area.) If a de--energize via unitdisconnect switch operation of the convenience outlet isdesired, connect the source leads to the load side of theunit disconnect. On a unit without a unit--mounteddisconnect, connect the source leads to compressorcontactor C and indoor fan terminal block (IFTB) pressurelugs with unit field power leads.
Refer to Fig. 38 for power transformer connections andthe discussion on connecting the convenience outlet onpage 24.
Field power wires are connected to the unit at line--sidepressure lugs on compressor contactor C and indoor fanterminal block (IFTB) (see wiring diagram label forcontrol box component arrangement) or atfactory--installed option non--fused disconnect switch orHACR. Max wire size is #2ga AWG (copper only) perpole on contactors. #2ga AWG per pole on optionaldisconnect or HACR and 4/0 AWG per pole on terminalor fuse block on units with single point box. See Fig. 30and unit label diagram for field power wiring connections.
48HC
48LC
17
ESL
IFM
TDR
CONT
ROL
LOGI
C
RR I SPT
NO NC
VIO
RED RE
D
CBR
N
BLK
BLK
BRN
BRN
3 PHA
SE O
NLY
DD IF
MC
BRN
10
9
8
7
6
5
4
3
2
1
DDC
1 65432 7DDC
X
THER
MO-
STATC G W
2
W1
Y2 Y1 R
1
2
3
4
5
6
7
8
9
4
6
8
9
7
5
3
10 10
2
1
ECON
1
2
3
4
SAT/OAT
BLU
YEL
BLK
RED
1 2 3 4 5 6
4 65321
CLO1
/CO
MP1
BRN
VIO
BLU
1
2
3
PMR
1
2
3
4
5
6
7
8
4
6
8
7
5
3
2
1
CONTLBOARD
WHT
ORN
BRN
BRN
BLK
RED
99
RED
DDC
1 2 3 4 5 6
CLO2
/CO
MP2
7
REMOTESHUTDOWN
UNIT
SH
UTDO
WN
SMOKESHUTDOWN
24V OUTC
SMOKEALARM
JMP4
JMP3
JMP1
OCCUPANCY
JMP2
R
JMP6
GRA
GRA
GRA
PNK
BRN
RED
GRA
GRA
PNK
PNK
VIO
BRN
ORN
RED
1PNK
2VIO
3BRN
4ORN
1 65432 7
REHE
AT8
JMP5
JMP7
C BL
U
GRA
1010
RED
1111
RED
1212
DDC
PNK
T'STA
T
4
5
3
2
1
6
8
9
7
10
4 6 75321BR
N
GRN
PNK
ORN
YEL
BLU
WHT
BLU
FIEL
DCO
NTRO
LW
IRIN
G
HPS1
LPS1
CKT 1
LPS
BLU
BLU
HPS
BLK
BLK
CKT2
HPS2
LPS2
C
ORN
COFS
(FIO
P)
BLU
BLU
BLU
RED
BRN
DDC
ONLY
BRN
RED
BRN
COFS
BRN
LCTB
-CRE
D
LOGIC
BRN
COFS
(FIO
P)
(SEE
NOT
E 1)
CTB
C48
HC50
0010
TRAN
24V
BRN
GRA
CBR
N
BRN
CLO1
TER
M BD
3
RED
FROM
POW
ER S
CHEM
ATIC
24V
GRN/
YEL
48LC
CON
TROL
208/2
30V,
460V
,575V
3-5 T
ON
BRN
TRAN
BRN
CONT
ROL B
D
24V5
SEE
POW
ER
LABE
L
1PH
IFM
ONLY
CB
3.2 A
MPS
ORN
BLU RE
DBR
N
WHT
GRA
GRA
YEL PN
KRED
GRA
BRN
FOR
FIEL
D US
E
RED
PNK
BRN
COM
24V
CONT
PMR
FIOP
/ACC
Y
DDC
OPTI
ONS
ONLY
RED
BRN
IDMR
VIO
BRN
575V
ONL
Y
BRN
575V
ONL
Y
BLK
VIO
VIO
GRA
BRN
THRU
STA
NDOF
FGR
OUND
ED
CR BR
IGC
HS
LS1
3
BLU
BLU
RS1
3
GVR
CR BRL1BM
RT
CCM
12
3
J1
FAN
LOGI
C
SAFE
TYLO
GIC
HV TRAN
GVR
J2 WIFO G R RS RS LS LS CS CS GV
YEL
GV
FS C
GRN/
YEL
MGV
12
3
BLK
FLAM
E SE
NSOR
GRN/
YEL
IYE
LBLK
ORN
WHT
RED
BRN
C
MGV
M M HC
TWO
STAG
E
GRA
SING
LE S
TAGE
PNK
ORN
BLU
BLU
RED
575V
ONLY
VIO
(208
,230V
)BL
K (4
60)
CCHT
S
460/5
75V
ONLY
CCHR
TDR
BD3
RED
NOTE
S:1.
TERM
INAL
BOA
RD S
CHEM
ATIC
LAYO
UT D
OES
NOT
MATC
H AC
TUAL
TER
MINA
L BOA
RD
TO
SIMP
LIFY
CIRC
UIT
TRAC
ES.
2. EN
SURE
DES
IGNA
TED
JUMP
ERS
ON T
ERMI
NAL B
OARD
ARE
CUT
WHE
N AD
DING
SMO
KE D
ETEC
TORS
, PHA
SE LO
SS R
ELAY
, OCC
UPAN
CY A
ND R
EMOT
E SH
UTDO
WN.
3. CO
MPRE
SSOR
LOAD
ER P
LUG
CON
TAIN
S BR
IDGE
REC
TIFI
ER T
O CO
NVER
T AC
TO
DC.
4. FA
CTOR
Y W
IRIN
G FO
R SI
GNAL
CON
NECT
IONS
: LO=
1 HI=
2, R
ELOC
ATIO
N OF
SIG
NAL C
ONNE
CTIO
N M
AY B
E RE
QUIR
ED W
HEN
USIN
G F
IELD
INST
ALLE
D AC
CESS
ORIE
S -
CON
SULT
INST
ALLA
TION
I
NSTR
UCTI
ONS
FOR
PROP
ER
SEL
ECTI
ON.
5. W
ITH
DDC
OPTI
ON T
HERE
WILL
BE
WIR
ES IN
PIN
S 6,
7, AN
D 8.
6. FO
R HI
GH S
PEED
BLO
WER
TES
TING
, CON
NECT
YEL
LOW
AND
A
ND W
HITE
WIR
ES. D
ISCO
NNEC
T F
OR N
ORMA
L OPE
RATI
ON.
BLK
1 2IA
Q6 7
PL18
-3
BLU
PL18
-4RE
DPL
18-1
BRN
PL18
-2BL
K
BLU
RED
BRN
(FIO
P/AC
CY)
5 4 3 2 1YE
L
WHT
3 2
6PN
KOR RE
D6
54321
VFD
F
AN
BOAR
D
J2J1
ORN
PNK/
BLK
(NOT
USE
D)
BRN
4321JW
1
JW2
YEL 32106
GRA
VIO YE
L
BLU
BLK
BRN
RED
129514328106
PL6
PNK
RED
BLK
WHT
ENTH
ALPY
SENS
OR
1111
7PN
K7
BRN
ORN
PNK
VIO
GRA
GRA
BLK
BLU
1 2 3
ECON
OMO
TOR
ENTH
ALPY
(ACC
Y)
ORN
(FIO
P/AC
CY)
OAT
GRN
GRN
ECON
OMIZ
ER
(FIO
P/AC
CESS
ORY) OR
N
BRN
SAT
GRN
GRN
IAQ
2-10
IAQ
24V+
IAQ
COM
S-BU
SS-
BUS
OAT
OAT
MAT
MAT
BLK
BLU
ACT
2-10
ACT
COM
ACT
24V+
1 2 1 2 1 2 1 2 3 32 41
OCC
EXH
1
E-GN
D
AUX2
-1
YEL
GRN/
YEL
BLK
WHT RE
D
BRN
ORN
YEL
Y1-O
Y1-I
Y2-O
Y2-I C R
GRA
BLU
2345 1236 5 4
BLUE GRAY
HONE
YWEL
L W
7220
W1
AUX1
-016
GRN
4
51
3891261074 9 10 2 3 8
47
56
GRA
YEL
BLU
BLK
BRN
RED
ORN
BRN
2 1432
3
14
ORN
BRN
VIO
PNK
ORN
VIO
PNK
CTB
T'STA
T-W
1
GRA
2 1GR
A
GRA
GRA
VIO
PNK
PL
14GR
AGR
A
TAN
TO P
OWER
EXH
AUST
ACCE
SSOR
Y
TAN
ORN
GRA
GRA
GRA
YEL
8 4 1 9
BRN
RED
ORN
TAN
GRA
4321BL
U
BLK
GRA
GRA
GRA
GRA
BLU
BLK
BLUYEL
326
11
7 8 4 1 9 12
5
PL6-
RFO
R ST
DUN
ITPL
6-R
STD
UNIT
CTB
ECON
ECON
OMIZ
ER(F
IOP/
ACCE
SSOR
Y)
BRN
1413121110
YEL
26PN
K
15W
HT
VFD
PL25
BLU
BLU
PNK
YEL
PNK
WHT
316
PNK
4PN
K
5
PNK
ECM
HILO
YEL
WHT
RED
R CTB
CLGNYE
LGR
N/YE
LBL
KBR
N
54
32
1
TO "C
" CO
IL
HIGH
VOLT
AGE
3 PH
IFM
DD IFM
VIO
ORN
VIO
WHT
O F M C
WHT
LAS
FPT
BLK
YEL
BRN BL
KBL
UGR
N/YE
L
HIGH
VOLT
AGE
OFM
YEL
YEL
BRN
BRN
BRN
SF
BLK
BLK
(SEE
NOT
E 3)
BRN
CLO2
/CO
MP2
-2LDR
WHT
LDR
BRN
SMOK
E CO
NTRO
LMO
DULE
FIOP
/ACC
ESSO
RY
1610 9
ORN
BRN
POW
ER24
VAC
6 17 14 3 5 4
NC NOBL
U
TROU
BLE
NC ALAR
MNO
RJ-4
5RE
TURN
SM
OKE
SENS
OR
RJ-4
5SU
PPLY
SMOK
ESE
NSOR
FIOP
/AC
CESS
ORY
RED
GRA
YEL
GRN
PNK
1 2 4 3 6 7 8 9
PL19
-
WHT
5
GRA
5
BLK
BLU
SEE
NOTE 4
7 23456 1 DDC
HARN
ESS
4 2 13567BR
N
GRN
PNK
ORN
YEL
BLU
WHT
YEL
BRN OR
N YEL
GRA
ORN
BRN
BLU
RED
GRA
YEL
GRA
PNK
WHT
125
SEE
NOTE
5
BLK
BRN
RED
BRN
BLK
GRA
5
YEL
WHT
NOTE 6
GRA
GRA
GRA
C13383
Fig. 24 -- 48LC Control Wiring Diagram
48HC
48LC
18
ESL
IFM
TDR
CONT
ROL
LOGI
C
RR I SPT
NO NC
VIO
GRA
RED RE
D
CBR
N
BRN
-48
HC50
0325
GRA
48LC
CON
TROL
208/2
30V,
460V
,575V
3-5 T
ON
GRA
GRA DD
COP
TION
SON
LY
NOTE
S:1.
TERM
INAL
BOA
RD S
CHEM
ATIC
LAYO
UT D
OES
NOT
MATC
H AC
TUAL
TER
MINA
L BOA
RD
TO
SIMP
LIFY
CIRC
UIT
TRAC
ES.
2. EN
SURE
DES
IGNA
TED
JUMP
ERS
ON T
ERMI
NAL B
OARD
ARE
CUT
WHE
N AD
DING
SMO
KE D
ETEC
TORS
, PHA
SE LO
SS R
ELAY
, OCC
UPAN
CY A
ND R
EMOT
E SH
UTDO
WN.
3. CO
MPRE
SSOR
LOAD
ER P
LUG
CON
TAIN
S BR
IDGE
REC
TIFI
ER T
O CO
NVER
T AC
TO
DC.
4. FA
CTOR
Y W
IRIN
G FO
R SI
GNAL
CON
NECT
IONS
: LO=
1 HI=
2, R
ELOC
ATIO
N OF
SIG
NAL C
ONNE
CTIO
N M
AY B
E RE
QUIR
ED W
HEN
USIN
G F
IELD
INST
ALLE
D AC
CESS
ORIE
S -
CON
SULT
INST
ALLA
TION
I
NSTR
UCTI
ONS
FOR
PROP
ER
SEL
ECTI
ON.
5. W
ITH
DDC
OPTI
ON T
HERE
WILL
BE
WIR
ES IN
PIN
S 6,
7, AN
D 8.
6. FO
R HI
GH S
PEED
BLO
WER
TES
TING
, CON
NECT
YEL
LOW
AND
A
ND W
HITE
WIR
ES. D
ISCO
NNEC
T F
OR N
ORMA
L OPE
RATI
ON.
BLK
1 2IA
Q6 7
PL18
-3
BLU
PL18
-4RE
DPL
18-1
BRN
PL18
-2BL
K
BLU
RED
BRN
(FIO
P/AC
CY)
5 4 3 2 1
YEL
WHT
3 2
6PN
KOR RE
D6
54321
VFD
F
AN
BOAR
D
J2J1
ORN
PNK/
BLK
(NOT
USE
D)
BRN
4321JW
1
JW2
YEL 32
10
6
GRA
VIO
YEL
BLU
BLK
BRN
RED
129514328106
PL6
PNK
RED
BLK
WHT
ENTH
ALPY
SENS
OR
1111
7PN
K7
BRN
ORN
PNK
VIO
GRA
GRA
BLK
BLU
1 2 3
ECON
OMO
TOR
ENTH
ALPY
(ACC
Y)
ORN
(FIO
P/AC
CY)
OAT
GRN
GRN
ECON
OMIZ
ER
(FIO
P/AC
CESS
ORY) OR
N
BRN
SAT
GRN
GRN
IAQ
2-10
IAQ
24V+
IAQ
COM
S-BU
SS-
BUS
OAT
OAT
MAT
MAT
BLK
BLU
ACT
2-10
ACT
COM
ACT
24V+
1 2 1 2 1 2 1 2 3 32 41
OCC
EXH
1
E-GN
D
AUX2
-1
YEL
GRN/
YEL
BLK
WHT RE
D
BRN
ORN
YEL
Y1-O
Y1-I
Y2-O
Y2-I C R
GRA
BLU
2345 1236 5 4
BLUE GRAY
HONE
YWEL
L W
7220
W1
AUX1
-016
GRN
4
51
3891261074 9 10 2 3 8
47
56
GRA
YEL
BLU
BLK
BRN
RED
ORN
BRN
2 1432
3
14
ORN
BRN
VIO
PNK
ORN
VIO
PNK
CTB
T'STA
T-W
1
GRA
2 1GR
A
GRA
GRA
VIO
PNK
PL
14GR
AGR
A
TAN
TO P
OWER
EXH
AUST
ACCE
SSOR
Y
TAN
ORN
GRA
GRA
GRA
YEL
8 4 1 9
BRN
RED
ORN
TAN
GRA
4321BL
U
BLK
GRA
GRA
GRA
GRA
BLU
BLK
BLUYEL
326
11
7 8 4 1 9 125
PL6-
RFO
R ST
DUN
ITPL
6-R
STD
UNIT
CTB
ECON
ECON
OMIZ
ER(F
IOP/
ACCE
SSOR
Y)
1413121110
YEL
26PN
K
15W
HT
VFD
PL25
BLU
BLU
PNK
YEL
PNK
WHT
316
PNK
4PN
K
5
PNK
ECM
HILO
YEL
WHT
RED
R CTB
CLGNYE
LGR
N/YE
LBL
KBR
N
54
32
1
TO "C
" CO
IL
HIGH
VOLT
AGE
3 PH
IFM
DD IFM
5
BLK
BLU
SEE
NOTE 4
7 23456 1 DDC
HARN
ESS
4 2 13567BR
N
GRN
PNK
ORN
YEL
BLU
WHT
YEL
BRN OR
N YEL
GRA
GRA
125GRA
5
YEL
WHT
NOTE 6
PNK
RED
BRN
TRAN
BRN
CONT
ROL B
D
24V5
BRN
TRAN
FRO
M PO
WER
SCH
EMAT
IC
24V
BRN
RED
24V GR
N/YE
L3.2
AMP
S
ORN
BLU
RED
BRN
YEL PN
K
WHT
RED
GRA
BRN
FOR
FIEL
D US
E
RED
PNK
BRN
COM
24V
CONT
PMR
FIOP
/AC
CY
RED
BRN
DDC
ONLY
CCHT
S46
0/575
V ON
LY
CCHR
BLK
BLK
BRN
BRN
CTB-C
RED
RED
BRN
COFS
FIEL
DCO
NTRO
LW
IRIN
GGRA
YEL
(SEE
NOT
E 1)
CTB
RED
LOGIC
BRN
COFS
(FIOP
)
SMOK
E CO
NTRO
LMO
DULE
FIOP
/ACC
ESSO
RY
1610 9
ORN
BRN
POW
ER24
VAC
6 17 14 3 5 4
NC NOBL
U
TROU
BLE
NC ALAR
MNO
RJ-4
5RE
TURN
SM
OKE
SENS
OR
RJ-4
5SU
PPLY
SMOK
ESE
NSOR
FIOP
/AC
CESS
ORY
RED
GRA
YEL
GRN
PNK
1 2 4 3 6 7 8 9
PL19
-
WHT
5
GRA
ORN
BRN
BLU
RED
GRA
YEL
GRA
PNK
WHT
RED
BRN
C BR
N
BRN
CLO1
TERM
BD3
BRN
DD IF
MC
BRN
10
9
8
7
6
5
4
3
2
1
DDC
1 65432 7
DDC
X
THER
MO-
STATC G W
2
W1
Y2 Y1 R
1
2
3
4
5
6
7
8
9
4
6
8
9
7
5
3
10 10
2
1
ECON
BLU
YEL
BLK
RED
1 2 3 4 5 6
4 65321
CLO1
/CO
MP1
BRN
VIO
BLU
1
2
3
PMR
1
2
3
4
5
6
7
8
4
6
8
7
5
3
2
1
CNTLBRD
WHT
ORN
BRN
BRN
BLK
RED
99
RED
DDC
1 2 3 4 5 6
CLO2
/CO
MP2
7
HPS1
LPS1
CKT 1
REMOTESHUTDOWN
UNIT
SH
UTDO
WN
SMOKESHUTDOWN
24V OUTC
SMOKEALARM
JMP4
JMP3
JMP1
OCCUPANCY
JMP2
R
JMP6
GRA
GRA
GRA
PNK
BRN
RED
GRA
GRA
PNK
PNK
VIO
BRN
ORN
RED
1 65432 7
REHE
AT8
JMP5
JMP7
LPS
BLU
BLU
HPS
BLK
BLK
C
CKT 2
GRA
1010
RED
1111
RED
1212
DDC
PNK
T'STA
T
4
5
3
2
1
6
8
9
7
10
4 6 75321BR
N
GRN
PNK
ORN
YEL
BLU
WHT
BLU
BRN
HPS2
LPS2
C
ORN
COFS
(FIO
P)
BLU
BLU
BLU
VIO
ORN
VIO
WHT
O F M C
WHT
FPT
BLU
BLK
YEL
BRN
BLK
BLU
GRN/
YEL
HIGH
VOLT
AGE
OFM
YEL
BRN
BRN
BRN
SF
BLK
BLK
BRN
BRN
CLO2
/CO
MP2
-2LDR
WHT
LDR
(SEE
NOT
E 3)
SEE
NOTE
5
BRN
YEL
BLU
BLK
1
2
3
4
SAT/
OAT
1PNK
2VIO
3BRN
4ORN
CBPN
K
YEL
BRN
GRA
BLK
WHT RE
D
LTLO
BRN
CLV
RDV
BLK
PNK/
BLK
GRA
WHT
BRN
BLU
RLV
BLU
REHE
ATCO
NTRO
L
1 65432 7 J18
21 4 5 6 73 8
99
1 2 3 4 5 6
4 65321J2 7
7
1010
1111
CR2
DHRB
DHRA
HR1
CR1
HR1
DHRA
DHRB
DHRB
2
DHRB
2
CR1
CR2
BRN
BRN
YEL
YEL
RED
FROM
PO
WER
SC
HEMA
TIC
24V
GRN/
YEL
CB
BRN
TRAN
2
1 2 4 5 6
WHT
WHT
YEL
GRA
GRA
(J1-5
)
(J1-6
)
ORN
ORN
ORN
(J1-1
1)
ORN
(J1-1
0)
HU
PNK
HUMI
D-IS
TAT
ACCY
PNK/
BLK
LAS1
BLU
BLU
GRY
WHT
LAS3
OFR1
YEL
1112
OFR2
1112 14
BLU
GRA
OFR1
PNK/
BLK
OFR2
BRN
LCTB
CYE
LOF
R1BR
N
PNK
GRA
BRN
CLO2
/COMP
2-2
SEE
POW
ER
LABE
LIDM
RVI
OBR
N57
5V ON
LY
575V
ONL
YRE
D
BRN
575V
ONL
Y
BLK
208/2
30,46
0V
VIO
VIO
BRN
GROU
NDED
THR
U ST
ANDO
FF
CR BR
IGC
HS
LS1
3
BLU
BLU
RS1
3
GVR
CR BRL1BM
RT
CCM
12
3
J1
FAN
LOGI
C
SAFE
TYLO
GIC
HV TRAN
GVR
J2 WIFO G R RS RS LS LS CS CS GV
YEL
GV
FS CGR
N/YE
L
VIO
(208
,230V
)
FLAM
E SE
NSOR
GRN/
YEL
IYE
L
BLK
ORN
WHT
RED
BRN
C
MGV
M M HC
TWO
STAG
E
GRA
PNK
ORN
BLK
(460
)1
0
1PH
IFM
ONLY
BLK GR
A
MGV
12
3
SING
LE S
TAGE
GRA
RED
GRA
C13384
Fig. 25 -- 48LC Control Wiring Diagram with Humidi--MiZerR
48HC
48LC
19
X1X3
X2X4H1
H4H2
H3
BLK
BLK
CCH
D48
HC50
0012
T1 T3 T2
BLK
YEL
BLU
COMP
BLK
YEL
BLK
BLK
BLK
YEL
YEL
1121
1323
C
230
200
C
BLK
YEL
TO IN
DICA
TE C
OMMO
N PO
TENT
IAL
ONLY
: NOT
TO
REPR
ESEN
T W
IRIN
G
MARK
ED W
IRE
LEGE
ND
X
TERM
INAL
(MAR
KED)
TERM
INAL
(UNM
ARKE
D)XX
TERM
INAL
BLO
CK
SPLIC
ESP
LICE
(MAR
KED)
FACT
ORY
WIR
ING
FIEL
D CO
NTRO
L WIR
ING
FIEL
D PO
WER
WIR
ING
ACCE
SSOR
Y OR
OPT
IONA
L WIR
ING
NOT
ES1.
IF A
NY O
F TH
E OR
IGIN
AL W
IRE
FURN
ISHE
D M
UST
BE R
EPLA
CED.
IT M
UST
BE R
EPLA
CED
WIT
H TY
PE 90
C W
IRE
OR IT
S EQ
UIVA
LENT
.2.
COMP
RESS
OR A
ND F
AN M
OTOR
S AR
E TH
ERMA
LLY
PRO
TECT
ED. T
HREE
PHA
SE M
OTOR
S AR
E P
ROTE
CTED
AGA
INST
PRI
MARY
SIN
GLE
PHAS
ING
CON
DITI
ONS.
3. 20
8/230
V UN
IT T
RAN
IS W
IRED
FOR
230V
UNI
T.
IF
UNIT
IS T
O BE
RUN
WIT
H 20
8V P
OWER
SUP
PLY
DIS
CONN
ECT
BLK
WIR
E FR
OM 23
0V T
AP A
ND C
ONNE
CT T
O 20
0V T
AP.
4. US
E CO
PPER
, COP
PER
CLAD
ALU
MINU
M OR
ALU
MINU
M CO
NDUC
TORS
.5.
USE
COPP
ER C
ONDU
CTOR
ONL
Y.6.
DO N
OT D
ISCO
NNEC
T PO
WER
PLU
G OR
SIG
NAL
WIR
E W
HILE
UND
ER LO
AD.
7. VF
D US
ER K
EYPA
D CO
NNEC
TED
TO T
HE D
RIVE
FOR
SHI
PPIN
G PU
RPOS
ES.
8. TH
ESE
FUSE
S AR
E MA
NUFA
CTUR
ED B
Y CO
OPER
BUS
SMAN
, P
/N -
FNQ-
R-2.
CIRC
UIT
BOAR
D TR
ACE
460
TRAN
24V
BRN
RED
24V
GRN/
YEL
TO 24
VSC
HEMA
TIC
48LC
POW
ER 20
8/230
V,46
0V 3
PH 3-
5 TON
IFTB
IDM
CAP
3QT
BLK
460V
VIO
208/2
30V
YEL
YEL
BRN
CM
IGC
SEE
CONT
ROL
SCHE
MATI
C
BLK
L1BL
K
BM
BRN
YEL
L1 L3 L2PM
R(A
CCY)
BLK
YEL
BLU
BLU
YEL
CLGNYE
LGR
N/YE
LBL
KBR
NDI
RECT
DRIV
E
(NOT
E 6)
54
32
1
IFM
BLK
42
86
CCHR
460V
ONL
Y
BLK
BLK
CCH
CCHT
S 20
8/230
V ON
LYBL
K
BLK
BLK
BLK
WHT
BLK
FIOP
NO
N-PO
WER
EDCO
NVEN
IENC
EOU
TLET
115V
FIEL
DSU
PPLY
GR
SEE
NOTE
#5
MAXI
MUM
WIR
ESI
ZE 4
AWG
BLK
YEL
BLU
EQUI
PGR
FIEL
D
POW
ER
SUPP
LY
T1 T2 T3
L1 L2 L3DISC
ONNE
CT EQUI
P GR
HACR
FIOP
1/0 M
AXW
IRE
SIZE
SEE
NOTE
5
FIOP
1/0 M
AXW
IRE
SIZE
SEE
NOTE
4
L1,L2
,L3 W
IRES
ARE
FACT
ORY
WIR
ES W
ITH
HACR
/DIS
CONN
ECT
FIOP
S
RLV
RMOC
RS SAT
SEN
SET
SCT
SF SPRH
SPT
SPTO
SSP
SW TB TRAN
UPC
VFD
___.A
__
_.BAC
CYAL
MC CA
PCB CC
HCC
NCI
BCL
VCO
FSCO
MCO
MPCT
BDD
CEC EC
BEN
THER
VFB FI
OPFS FD
WN
FPT
FU GR (G
ND)
GV HPS
HS HUM
I IAQ
IDM
IDR
IFC
IFM
IFTB
IGC
LAR
LAS
LDR
LEN
LPW
RLS LS
MLT
LOMA
RQMB
BMO
VOA
TOF
COF
MOF
ROF
TBOL PE
RPL PM
RQT R RA
TRD
VRH
THER
MOST
AT/IG
C MA
RKIN
GSBM C C-
2CM CS G IF
0L1 R R-
2RT SS W W
1W
2X Y1 Y2
GRN/
YEL
WHT
LO
LOW
VOL
TAGE
YEL
HI
U2W
1
V2V1
321
BLU
YEL
BLK
IFM
3 PH
W2
U1VF
D
PE
GRN/
YEL
GRN/
YEL BL
U
YEL
BLK
BLU
YEL
BLK
GRN/
YEL
GRN/
YEL BL
U
YEL
BLK
BLK
(NOT
E 7)
- OR
-
BLK BL
U
GRN/
YEL
O F M C
BLU
BRN
YEL
WHT
LOW
VOLT
AGE
BLK
OFM
BLU
FU FU
2 AMP
2 AMP
SEE
NOTE
#8
TRAN
OFM
FOR
460V
ONLY
BLU
BLK
BLU
BLK
BLK
BLU
BLU
BLK BL
K
BLU
FOR
230V
ONLY
BLK
BLK
TRAN
CTB
C
X
THERMOSTAT
C G W2
W1
Y2 Y1 R
COMP
ONEN
T AR
RANG
EMEN
T
COFS
(FIO
P)VF
DFA
NBD
HACR
/DIS
CONN
ECT
OPTI
ON
IFTB
7220
-OR-
RTU-
OPEN
CCHR
460V
&57
5VON
LY
PHAS
ELO
SSIF
MTD
R
TRAN
2
REHEAT BOARD
OFR1OFR2
DEHMIDIFICATION FIOP
DEHM
IDIF
ICAT
ION
FIOP
230
200
C
BLK
YEL
460
TRAN
224
V BRN
RED
24V GR
N/YE
LTO
24V
SCHE
MATI
C
575
DEHU
MIDI
FICA
TION
FIO
P
MOV1
MOV3
MOV2
CIRC
UIT
ACI
RCUI
T B
ACCE
SSOR
YAL
ARM
RELA
YCO
NTAC
TOR,
COMP
RESS
ORCA
PACI
TOR
CIRC
UIT
BREA
KER
CRAN
KCAS
E HE
ATER
CARR
IER
COMF
ORT
NETW
ORK
COMM
UNIC
ATIO
N IN
TERF
ACE
BOAR
DCO
OLIN
G LIQ
UID
VALV
ECO
NDEN
SATE
OVE
RFLO
W S
WIT
CHSI
GNAL
COM
MON
COMP
RESS
OR M
OTOR
CENT
RAL T
ERMI
NAL B
OARD
DIRE
CT D
IGIT
AL C
ONTR
OLEN
THAL
PY C
ONTR
OLEC
ONOM
IZER
CON
TROL
BOA
RDEN
THAL
PYEN
ERGY
REC
OVER
Y VE
NTILA
TOR
FUSE
BLO
CKFA
CTOR
Y IN
STAL
LED
OPTI
ONFL
AME
SENS
ORFI
RE S
HUT
DOW
NFR
EEZE
PRO
TECT
ION
THER
MOST
ATFU
SEGR
OUND
GAS
VALV
EHI
GH P
RESS
URE
SWIT
CHHA
LL E
FFEC
T SE
NSOR
HUMI
DIST
ATIG
NITO
RIN
DOOR
AIR
QUA
LITY
SENS
ORS
INDU
CED
DRAF
T MO
TOR
INDU
CED
DRAF
T RE
LAY
(575
V)IN
DOOR
FAN
CON
TACT
ORIN
DOOR
FAN
MOT
ORIN
DOOR
FAN
TER
MINA
L BLO
CKIN
TEGR
ATED
GAS
CON
TROL
LOW
AMB
IENT
REL
AYLO
W A
MBIE
NT S
WIT
CHCO
MPRE
SSOR
LOAD
ER(IN
TERN
AL)
LOCA
L EQU
IPME
NT N
ETW
ORK
CURR
ENT
LOOP
POW
ERLIM
IT S
WIT
CHLIM
IT S
WIT
CH (M
ANUA
L RES
ET)
LOW
TEM
P LO
CKOU
TSC
ROLL
ING
MARQ
UEE
DISP
LAY
MAIN
BAS
E BO
ARD
META
L OXI
DE V
ARIS
TOR
OUTD
OOR
AIR
TEMP
. SEN
OUTD
OOR
FAN
CONT
ACTO
ROU
TDOO
R FA
N MO
TOR
OUTD
OOR
FAN
RELA
YOU
TDOO
R FA
N TE
RMIN
AL B
LOCK
OVER
LOAD
PO
WER
EXH
AUST
REL
AYPL
UG A
SSEM
BLY
PHAS
E MO
NITO
R RE
LAY
QUAD
RUPL
E TE
RMIN
ALRE
LAY
RETU
RN A
IR T
EMP.
SEN
REHE
AT D
ISCH
ARGE
VAL
VERE
LATI
VE H
UMID
ITY
REHE
AT LI
QUID
VAL
VERE
MOTE
OCC
UPAN
CYRO
LLOU
T SW
TSU
PPLY
AIR
TEM
P SE
MSOR
SENS
ORSE
T PO
INT
OFFS
ETSA
TURA
TED
COND
ENSI
NG T
EMP
SIGN
AL F
ILTER
SPAC
E RE
LATI
VE H
UMID
ITY
SPAC
E TE
MPER
ATUR
E SE
NSOR
SPAC
E TE
MPER
ATUR
E OF
FSET
SATU
RATE
D SU
CTIO
N PR
ESSU
RESW
ITCH
TERM
INAL
BLO
CKTR
ANSF
ORME
RUN
IVER
SAL P
ROTO
COL C
ONVE
RTER
VARI
ABLE
FRE
QUEN
CY D
RIVE
BLOW
ERCO
MMON
COMM
ON (T
RAN2
)CO
MBUS
TION
MOT
ORCE
NTRI
FUGA
L SW
ITCH
FAN
INDO
OR F
AN O
NLIN
E 1
THER
MOST
AT P
OWER
THER
MOST
AT P
OWER
(TRA
N2)
POW
ER S
UPPL
YSP
EED
SENS
ORTH
ERMO
STAT
HEA
T CA
LL1s
t STA
GE O
F HE
ATIN
G 2n
d STA
GE O
F HE
ATIN
GAL
ARM
OUTP
UT1s
t STA
GE O
F CO
OLIN
G2n
d STA
GE O
F CO
OLIN
G
C13387
Fig. 26 -- 48LC Power Wiring Diagram, 208/230V, 460V 3 Phase
48HC
48LC
20
H1
X1X3
X2X4
H2
BLK
BLKCC
H
E48
HC50
0013
T1 T3 T2
BLK
YEL
BLU
COMP
BLK
YEL
BLK
BLK
BLK
YEL
BLK
YEL
1121
1323
C
C
BLK
YEL
TO IN
DICA
TE C
OMMO
N PO
TENT
IAL
ONLY
: NOT
TO
REPR
ESEN
T W
IRIN
G
MARK
ED W
IRE
LEGE
ND
X
TERM
INAL
(MAR
KED)
TERM
INAL
(UNM
ARKE
D)XX
TERM
INAL
BLO
CK
SPLIC
ESP
LICE
(MAR
KED)
FACT
ORY
WIR
ING
FIEL
D CO
NTRO
L WIR
ING
FIEL
D PO
WER
WIR
ING
ACCE
SSOR
Y OR
OPT
IONA
L WIR
ING
NOT
ES1.
IF A
NY O
F TH
E OR
IGIN
AL W
IRE
FURN
ISHE
D MU
ST B
E RE
PLAC
ED.
IT
MUST
BE
REPL
ACED
WIT
H TY
PE 90
C W
IRE
OR IT
S EQ
UIVA
LENT
.2.
COMP
RESS
OR A
ND F
AN M
OTOR
S AR
E TH
ERMA
LLY
PROT
ECTE
D.
THR
EE P
HASE
MOT
ORS
ARE
PROT
ECTE
D AG
AINS
T PR
IMAR
Y SI
NGLE
P
HASI
NG C
ONDI
TION
S.3.
TRAN
IS W
IRED
FOR
575V
UNI
T.4.
USE
COPP
ER, C
OPPE
R CL
AD A
LUMI
NUM
OR A
LUMI
NUM
COND
UCTO
RS.
5. US
E CO
PPER
CON
DUCT
OR O
NLY.
6. DO
NOT
DIS
CONN
ECT
POW
ER P
LUG
OR S
IGNA
L WIR
E W
HILE
UND
ER
LOA
D.7.
THES
E FU
SES
ARE
MANU
FACT
URED
BY
COOP
ER B
USSM
ANN,
P/N
- FN
Q-R-
4.8.
THES
E FU
SES
ARE
MANU
FACT
URED
BY
COOP
ER B
USSM
ANN,
P/N
- FN
Q-R-
1.9.
VFD
USER
KEY
PAD
CONN
ECTE
D TO
THE
DRI
VE F
OR S
HIPP
ING
PUR
POSE
S.
CIRC
UIT
BOAR
D TR
ACE
TRAN
RED
TO 24
VSC
HEMA
TIC
48LC
POW
ER 57
5-3-
60 3-
5 TON
575
IDM
CAP
3
QT
BLK
YEL
YEL
BRN
BLK
BRN
YEL
L1 L3 L2PM
R(A
CCY)
BLK
YEL
BLU
YEL BL
K6
8
24
IDMR
YEL
24V
BRN
24V
GRN/
YEL
CB
3.2 A
MPS
CLGNYE
LGR
N/YE
LBL
KBR
NDI
RECT
DRIV
E
54
32
1
(NOT
E 6)
IFM
YEL
460V
BLK
TRAN
2 (DD
ONL
Y)
1
2
BLK 3
4 BLK
RED
YEL
575V
FU FU4 AMP
4 AMP
BLK
YEL
SEE
NOTE
#7
BLK
42
86
CCHR
BLK
BLK
IFTB
WHT
BLK
FIOP
NO
N-PO
WER
EDCO
NVEN
IENC
EOU
TLET
115V
FIEL
DSU
PPLY
GR
SEE
NOTE
#5
MAXI
MUM
WIR
ESI
ZE 4
AWG
BLK
YEL
BLU
EQUI
PGR
L1,L2
,L3 W
IRES
ARE
FACT
ORY
WIR
ES W
ITH
HACR
/DIS
CONN
ECT
FIOP
S
FIEL
D
POW
ER
SUPP
LY
T1 T2 T3
L1 L2 L3DISC
ONNE
CT EQUI
P GR
HACR
FIOP
1/0 M
AXW
IRE
SIZE
SEE
NOTE
5
FIOP
1/0 M
AXW
IRE
SIZE
SEE
NOTE
4
RMOC
RS SAT
SEN
SET
SCT
SPRH
SPT
SPTO
SSP
SW TB TRAN
UPC
VFD
___.A
___.B
ACCY
ALM
C CAP
CB CCH
CCN
CIB
CLV
COFS
COM
COMP
CTB
DDC
EC ECB
ENTH
ERV
FB FIOP
FS FDW
NFP
TFU GV HP
SHS HU
MI IA
QID
MID
RIF
CIF
MIF
TBIG
CLA
RLA
SLD
RLE
NLP
WR
LTLO
LS LSM
MARQ
MBB
MOV
OAT
OFC
OFM
OFR
OFTB
OL PER
PL PMR
QT R RAT
RDV
RH RLV
THER
MOST
AT/IG
C MA
RKIN
GSBM C C-
2CM CS G IF
0L1 R R-
2RT SS W W
1W
2X Y1 Y2
GRN/
YEL
BLU
WHT
LO
LOW
VOL
TAGE
YEL
HI
BLK
BLK
U2W
1
V2V1
321
BLU
YEL
BLK
IFM
3 PH
W2
U1VF
D
PE
GRN/
YEL
GRN/
YEL
BLU
YEL
BLK
BLU
YEL
BLK
GRN/
YEL
GRN/
YEL
BLU
YEL
BLK
SEE
NOTE
#9
- OR
-
BLK
BLK BL
U
FU FU1 AMP
1 AMP
BLK
BLU
SEE
NOTE
#8
GRN/
YEL
O F M C
BLU
BRN
YEL
WHT
LOW
VOLT
AGE
BLK
OFM
BLU
TRAN
OFM
BLU
BLK
BLK
BLU
230V
575V
TRAN
CTB
C
X
THERMOSTAT
C G W2
W1
Y2 Y1 R
COMP
ONEN
T AR
RANG
EMEN
T
COFS
(FIO
P)VF
DFA
NBD
HACR
/DIS
CONN
ECT
OPTI
ON
IFTB
7220
-OR-
RTU-
OPEN
CCHR
460V
&57
5VON
LY
PHAS
ELO
SSIF
MTD
R
TRAN
2
REHEAT BOARD
OFR1OFR2
DEHMIDIFICATION FIOP
DEHM
IDIF
ICAT
ION
FIOP
230
200
C
BLK
YEL
460
TRAN
224
V BRN
RED
24V GR
N/YE
LTO
24V
SCHE
MATI
C
575
DEHU
MIDI
FICA
TION
FIO
P
MOV1
MOV3
MOV2
REMO
TE O
CCUP
ANCY
ROLL
OUT
SWIT
CHSU
PPLY
AIR
TEM
P SE
NSOR
SENS
ORSE
T PO
INT
OFFS
ETSA
TURA
TED
COND
ENSI
NG T
EMP
SPAC
E RE
LATI
VE H
UMID
ITY
SPAC
E TE
MPER
ATUR
E SE
NSOR
SPAC
E TE
MPER
ATUR
E OF
FSET
SATU
RATE
D SU
CTIO
N PR
ESSU
RESW
ITCH
TERM
INAL
BLO
CKTR
ANSF
ORME
RUN
IVER
SAL P
ROTO
COL C
ONVE
RTER
VARI
ABLE
FRE
QUEN
CY D
RIVE
CIRC
UIT
ACI
RCUI
T B
ACCE
SSOR
YAL
ARM
RELA
YCO
NTAC
TOR,
COMP
RESS
ORCA
PACI
TOR
CIRC
UIT
BREA
KER
CRAN
KCAS
E HE
ATER
CARR
IER
COMF
ORT
NETW
ORK
COMM
UNIC
ATIO
N IN
TERF
ACE
BOAR
DCO
OLIN
G LIQ
UID
VALV
ECO
NDEN
SATE
OVE
RFLO
W S
WIT
CHSI
GNAL
COM
MON
COMP
RESS
OR M
OTOR
CENT
RAL T
ERMI
NAL B
OARD
DIRE
CT D
IGIT
AL C
ONTR
OLEN
THAL
PY C
ONTR
OLEC
ONOM
IZER
CON
TROL
BOA
RDEN
THAL
PYEN
ERGY
REC
OVER
Y VE
NTILA
TOR
FUSE
BLO
CKFA
CTOR
Y IN
STAL
LED
OPTI
ONFL
AME
SENS
ORFI
RE S
HUT
DOW
NFR
EEZE
PRO
TECT
ION
TSAT
FUSE
GAS
VALV
EHI
GH P
RESS
URE
SWIT
CHHA
LL E
FFEC
T SE
NSOR
HUMI
DIST
ATIG
NITO
RIN
DOOR
AIR
QUA
LITY
SENS
ORS
INDU
CED
DRAF
T MO
TOR
INDU
CED
DRAF
T RE
LAY
(575
V)IN
DOOR
FAN
CON
TACT
ORIN
DOOR
FAN
MOT
ORIN
DOOR
FAN
TER
MINA
L BLO
CKIN
TEGR
ATED
GAS
CON
TROL
LOW
AMB
IENT
REL
AYLO
W A
MBIE
NT S
WIT
CHCO
MPRE
SSOR
LOAD
ER(IN
TERN
AL)
LOCA
L EQU
IPME
NT N
ETW
ORK
CURR
ENT
LOOP
POW
ERLO
W T
EMP
LOCK
OUT
LIMIT
SW
ITCH
LIMIT
SW
ITCH
(MAN
UAL R
ESET
)SC
ROLL
ING
MARQ
UEE
DISP
LAY
MAIN
BAS
E BO
ARD
META
L OXI
DE V
ARIS
TOR
OUTD
OOR
AIR
TEMP
. SEN
OUTD
OOR
FAN
CONT
ACTO
ROU
TDOO
R FA
N MO
TOR
OUTD
OOR
FAN
RELA
YOU
TDOO
R FA
N TE
RMIN
AL B
LOCK
OVER
LOAD
PO
WER
EXH
AUST
REL
AYPL
UG A
SSEM
BLY
PHAS
E MO
NITO
R RE
LAY
QUAD
RUPL
E TE
RMIN
ALRE
LAY
RETU
RN A
IR T
EMP.
SEN
REHE
AT D
ISCH
ARGE
VAL
VERE
LATI
VE H
UMID
ITY
REHE
AT LI
QUID
VAL
VE
BLOW
ERCO
MMON
COMM
ON (T
RAN2
)CO
MBUS
TION
MOT
ORCE
NTRI
FUGA
L SW
ITCH
FAN
INDO
OR F
AN O
NLIN
E 1
THER
MOST
AT P
OWER
THER
MOST
AT P
OWER
(TRA
N2)
POW
ER S
UPPL
YSP
EED
SENS
ORTH
ERMO
STAT
HEA
T CA
LL1s
t STA
GE O
F HE
ATIN
G2n
d STA
GE O
F HE
ATIN
GAL
ARM
OUTP
UT1s
t STA
GE O
F CO
OLIN
G2n
d STA
GE O
F CO
OLIN
G
C13388
Fig. 27 -- 48LC Power Wiring Diagram, 575V 3 Phase
48HC
48LC
21
C13389
Fig. 28 -- 48LC ComfortLINK Power Wiring Diagram, 208/230V, 460V 3 Phase
48HC
48LC
22
C13390
Fig. 29 -- 48LC ComfortLINK Power Wiring Diagram 575V 3 Phase
48HC
48LC
23
Disconnectper
NEC
13
L1 L2 L3
IFTBC
208/230-3-60460-3-60575-3-60
Units Without Disconnect or HACR Option
Units With Disconnect or HACR Option
L1
L2
L3
2
4
6
1
5
OptionalDisconnect
Switch FactoryWiring
3
Ground(GR)
EquipGR Lug
Equip GR Lug
Ground(GR)
3 Phase Only 3 Phase Only
C12148
Fig. 30 -- Power Wiring Connections
! WARNINGFIRE HAZARD
Failure to follow this warning could result inintermittent operation or performance satisfaction.
Do not connect aluminum wire between disconnectswitch and 48LC unit. Use only copper wire.(See Fig. 31.)
COPPER
WIRE ONLY
ELECTRICDISCONNECT
SWITCH
ALUMINUMWIRE
A93033
Fig. 31 -- Disconnect Switch and Unit
Units With Factory--Installed Non--Fused Disconnect orHACR —
The factory--installed optional non--fused disconnect (NFD)or HACR switch is located in a weatherproof enclosurelocated under the main control box. The manual switchhandle and shaft is shipped in the disconnect or HACRenclosure. Assemble the shaft and handle to the switch atthis point.
C12278
Fig. 32 -- Location of Non--Fused Disconnect Enclosure
To field install the NFD shaft and handle:
1. Remove the unit front panel (see Fig. 2).2. Remove (3) hexagon screws on the front cover -- (2)
on the face of the cover and (1) on the left side cover.3. Remove the front cover of the NFD enclosure.4. Make sure the NFD shipped from the factory is at
OFF position (the arrow on the black handle knob isat OFF).
5. Insert the shaft with the cross pin on the top of theshaft in the horizontal position.
6. Measure from the tip of the shaft to the top surface ofthe black pointer; the measurement should be 3.75 --3.88 in. (95 -- 99 mm).
7. Tighten the locking screw to secure the shaft to theNFD.
8. Turn the handle to the OFF position with red arrowpointing at OFF.
9. Install the handle on to the painted cover horizontallywith the red arrow pointing to the left.
10. Secure the handle to the painted cover with (2) screwsand lock washers supplied.
11. Engaging the shaft into the handle socket, re--install(3) hexagon screws on the front cover.
12. Re--install the unit front panel.
C12279
Fig. 33 -- Handle and Shaft Assembly for NFD
48HC
48LC
24
C12280
Fig. 34 -- Location of HACR Enclosure
To field install the HACR shaft and handle:
1. Remove the unit front panel (see Fig. 2).2. Remove (3) hexagon screws on the front cover -- (2)
on the face of the cover and (1) on the left side cover.3. Remove the front cover of the HACR enclosure.4. Make sure the HACR shipped from the factory is at
OFF position (the white arrow pointing at OFF).5. Insert the shaft all the way with the cross pin on the
top of the shaft in the horizontal position.6. Tighten the locking screw to secure the shaft to the
HACR.7. Turn the handle to the OFF position with red arrow
pointing at OFF.8. Install the handle on to the painted cover horizontally
with the red arrow pointing to the left.9. Secure the handle to the painted cover with (2) screws
and lock washers supplied.10. Engaging the shaft into the handle socket, re--install
(3) hexagon screws on the front cover.11. Re--install the unit front panel.
C12281
Fig. 35 -- Handle and Shaft Assembly for HACR
Units Without Factory--Installed Non--Fused Disconnector HACR —
When installing units, provide a disconnect switch perNEC (National Electrical Code) of adequate size.Disconnect sizing data is provided on the unit informativeplate. Locate on unit cabinet or within sight of the unit pernational or local codes. Do not cover unit informativeplate if mounting the disconnect on the unit cabinet.
All Units —
All field wiring must comply with NEC and all localcodes. Size wire based on MCA (Minimum Circuit Amps)on the unit informative plate. See Fig. 30 and the unitlabel diagram for power wiring connections to the unitpower terminal blocks and equipment ground. Maximumwire size is #2ga AWG per pole on contactors. #2ga AWGper pole on optional disconnect or HACR. See Fig. 30 andunit label diagram for field power wiring connections.
Provide a ground--fault and short--circuit over--currentprotection device (fuse or breaker) per NEC Article 440(or local codes). Refer to unit informative data plate forMOCP (Maximum Over--current Protection) device size.
NOTE: Units ordered with factory installed HACR donot need an additional ground--fault and short--circuitover--current protective device unless required by localcodes.
All field wiring must comply with the NEC and localrequirements.
All units except 208/230-v units are factory wired for thevoltage shown on the nameplate. If the 208/230-v unit isto be connected to a 208-v power supply, the controltransformer must be rewired by moving the black wirewith the 1/4-in. female spade connector from the 230--vconnection and moving it to the 200-v 1/4-in. maleterminal on the primary side of the transformer. Refer tounit label diagram for additional information.
NOTE: Check all factory and field electrical connectionsfor tightness.
Convenience Outlets —
ELECTRICAL OPERATION HAZARD
Failure to follow this warning could result in personalinjury or death.
Units with convenience outlet circuits may use multipledisconnects. Check convenience outlet for power statusbefore opening unit for service. Locate its disconnectswitch, if appropriate, and switch to off position.Lock--out and tag--out this switch, if necessary.
! WARNING
Two types of convenience outlets are offered on 48LCmodels: Non--powered and unit--powered. Both typesprovide a 125--volt GFCI (ground--fault circuit--interrupter)duplex receptacle rated at 15--A behind a hingedwaterproof access cover, located on the end panel of theunit. See Fig. 36.
48HC
48LC
25
ConvenienceOutletGFCI
Pwd-COFuse Switch
Pwd-COTransformer
Control BoxAccess Panel
C08128
Fig. 36 -- Convenience Outlet Location
Installing Weatherproof Cover: A weatherproofwhile-in-use cover for the factory-installed convenienceoutlets is now required by UL standards. This covercannot be factory-mounted due its depth; it must beinstalled at unit installation. For shipment, theconvenience outlet is covered with a blank cover plate.
The weatherproof cover kit is shipped in the unit’s controlbox. The kit includes the hinged cover, a backing plateand gasket.
DISCONNECT ALL POWER TO UNIT ANDCONVENIENCE OUTLET. LOCK--OUT AND TAG--OUTALL POWER.
Remove the blank cover plate at the convenience outlet;discard the blank cover.
Loosen the two screws at the GFCI duplex outlet, untilapproximately 1/2-in (13 mm) under screw heads areexposed. Press the gasket over the screw heads. Slip thebacking plate over the screw heads at the keyhole slotsand align with the gasket; tighten the two screws untilsnug (do not over-tighten).
Mount the weatherproof cover to the backing plate asshown in Fig. 37. Remove two slot fillers in the bottom ofthe cover to permit service tool cords to exit the cover.Check for full closing and latching.
RECEPTACLENOT INCLUDED
COVER – WHILE-IN-USE WEATHERPROOF
BASE PLATE FOR GFCI RECEPTACLE
C09022
Fig. 37 -- Weatherproof Cover Installation
Non--powered type: This type requires the fieldinstallation of a general--purpose 125--volt 15--A circuitpowered from a source elsewhere in the building. Observenational and local codes when selecting wire size, fuse orbreaker requirements and disconnect switch size andlocation. Route 125--v power supply conductors into thebottom of the utility box containing the duplex receptacle.
Unit--powered type: A unit--mounted transformer isfactory--installed to stepdown the main power supplyvoltage to the unit to 115--v at the duplex receptacle. Thisoption also includes a manual switch with fuse, located ina utility box and mounted on a bracket behind theconvenience outlet; access is through the unit’s controlbox access panel. See Fig. 36.
The primary leads to the convenience outlet transformer arenot factory--connected. Selection of primary power source isa customer--option. If local codes permit, the transformerprimary leads can be connected at the line--side terminals onthe unit--mounted non--fused disconnect or HACR breakerswitch; this will provide service power to the unit when theunit disconnect switch or HACR switch is open. Otherconnection methods will result in the convenience outletcircuit being de--energized when the unit disconnect orHACR switch is open. See Fig. 38.
C08283
UNITVOLTAGE
CONNECTAS
PRIMARYCONNECTIONS
TRANSFORMERTERMINALS
208,230 240 L1: RED +YEL
L2: BLU + GRAH1 + H3H2 + H4
460 480L1: REDSplice BLU + YELL2: GRA
H1H2 + H3H4
575 600 L1: REDL2: GRA
H1H2
Fig. 38 -- Powered Convenience Outlet Wiring
Using unit--mounted convenience outlets: Units withunit--mounted convenience outlet circuits will oftenrequire that two disconnects be opened to de--energize allpower to the unit. Treat all units as electrically energizeduntil the convenience outlet power is also checked andde--energization is confirmed. Observe National ElectricalCode Article 210, Branch Circuits, for use of convenienceoutlets.
48HC
48LC
26
Fuse on power type: The factory fuse is a Bussman“Fusetron” T--15, non--renewable screw--in (Edison base)type plug fuse.
B50HJ542739
Maximum Continuous use : 8 Amps 24/7
Convenience Outlet UtilizationNOTICE
C13415
Fig. 39 -- Convenience Outlet Utilization Notice Label
Duty Cycle: the unit--powered convenience outlet has a dutycycle limitation. The transformer is intended to providepower on an intermittent basis for service tools, lamps, etc; itis not intended to provide 15--amps loading for continuousduty loads (such as electric heaters for overnight use).Observe a 50% limit on circuit loading above 8--amps.
Convenience outlet usage rating:
Continuous usage: 8 amps maximum
Test the GFCI receptacle by pressing the TEST button onthe face of the receptacle to trip and open the receptacle.Check for proper grounding wires and power line phasingif the GFCI receptacle does not trip as required. Press theRESET button to clear the tripped condition.
HACR —
The amp rating of the HACR factory installed option isbased on the size, voltage, indoor motor and otherelectrical options of the unit as shipped from the factory.If field installed accessories are added or changed in thefield (i.e. electric heat, power exhaust, ERV), the HACRmay no longer be of the proper amp rating and thereforewill need to be removed from the unit. See unit nameplateand label on factory installed HACR for the amp rating ofthe HACR that was shipped with the unit from the factory.See unit nameplates for the proper fuse, HACR ormaximum over--current protection device required on theunit with field installed accessories.
C12105Fig. 40 -- HACR Caution Label
Factory--Option Thru--Base Connections (ElectricalConnections)—
This service connection kit consists of a 1/2--in NPT gasadapter fitting (brass), a 1/2--in electrical bulkheadconnector and a 3/4--in electrical bulkhead connector, allfactory--installed in the embossed (raised) section of theunit basepan in the condenser section. The 3/4--inbulkhead connector enables the low--voltage control wiresto pass through the basepan. The 1/2--in electricalbulkhead connector allows the high--voltage power wiresto pass through the basepan. See Fig. 16.Check tightness of connector lock nuts before connectingelectrical conduits.Field--supplied and field--installed liquid tight conduitconnectors and conduit may be attached to the connectorson the basepan. Pull correctly rated high voltage and lowvoltage through appropriate conduits. Connect the powerconduit to the internal disconnect (if unit is so equipped)or to the external disconnect (through unit side panel). Ahole must be field cut in the main control box bottom onthe left side so the 24--v control connections can be made.Connect the control power conduit to the unit control boxat this hole.
Units without Thru--Base Connections —
1. Install power wiring conduit through side panel open-ings. Install conduit between disconnect and controlbox.
2. Install power lines to terminal connections as shownin Fig. 30.
Voltage to compressor terminals during operation must bewithin voltage range indicated on unit nameplate. SeeTables 6 and 7. On 3--phase units, voltages betweenphases must be balanced within 2% and the current within10%. Use the formula shown in the legend for Tables 6and 7., Note 2 to determine the percent of voltageimbalance. Operation on improper line voltage orexcessive phase imbalance constitutes abuse and maycause damage to electrical components. Such operationwould invalidate any applicable Carrier warranty.
Field Control Wiring —
The 48LC unit requires an external temperature controldevice. This device can be a thermostat (field--supplied)or, the RTU Open Controller for Building ManagementSystems using non--CCN protocols (RTU Open isavailable as a factory--installed option only)., or a spacetemperature sensor (SPT) with factory installedComfortLINK controller.
Thermostat —
Install a Carrier--approved accessory thermostat accordingto installation instructions included with the accessory.For complete economizer function and 2 stage compressoroperation, select a two--stage cooling thermostat. Locatethe thermostat accessory on a solid wall in the conditionedspace to sense average temperature in accordance with thethermostat installation instructions.If the thermostat contains a logic circuit requiring 24--vpower, use a thermostat cable or equivalent single leads ofdifferent colors with minimum of seven leads. If thethermostat does not require a 24--v source (no “C”
48HC
48LC
27
connection required), use a thermostat cable or equivalentwith minimum of six leads. Check the thermostatinstallation instructions for additional features whichmight require additional conductors in the cable.
For wire runs up to 50 ft. (15 m), use no. 18 AWG(American Wire Gage) insulated wire [35_C (95_F)minimum]. For 50 to 75 ft. (15 to 23 m), use no. 16 AWGinsulated wire [35_C (95_F) minimum]. For over 75 ft.(23 m), use no. 14 AWG insulated wire [35_C (95_F)minimum]. All wire sizes larger than no. 18 AWG cannotbe directly connected to the thermostat and will require ajunction box and splice at the thermostat.
X
C
G
W2
C
W2
G
W1
O/B/Y2 Y2
R
W1
R
Y1 Y1
THERMOSTAT
(Note 1) (Note 2)
Note 1: Typical multi-function marking. Follow manufacturer’s configuration Instructions to select Y2.
Note 2: Y2 to Y2 connection required for 2 stage cooling opeation and when integrated economizer function is desired.
Field Wiring
CentralTerminalBoard
TypicalThermostatConnections
C12149Fig. 41 -- Low--Voltage Connections
Unit without Thru--Base Connection Kit —
Pass the thermostat control wires through the holeprovided in the corner post; then feed the wires throughthe raceway built into the corner post to the control box.Pull the wires over to the terminal strip on the upper--leftcorner of the Controls Connection Board. See Fig. 42.
RACEWAY
HOLE IN END PANEL (HIDDEN)C08027
Fig. 42 -- Field Control Wiring Raceway
NOTE: If thru--the--bottom connections accessory isused, refer to the accessory installation instructions forinformation on routing power and control wiring.
Heat Anticipator Settings —
Set heat anticipator settings at 0.14 amp for the first stageand 0.14 amp for second--stage heating, when available.
Humidi--MiZerR Control Connections
Humidi--MiZer – Space RH Controller —
The Humidi--MiZer dehumidification system requires afield--supplied and --installed space relative humiditycontrol device. This device may be a separate humidistatcontrol (contact closes on rise in space RH above controlsetpoint) or a combination thermostat--humidistat controldevice such as Carrier’s EDGER Pro Thermidistat withisolated contact set for dehumidification control. Thehumidistat is normally used in applications where atemperature control is already provided (units withPremierLinkt control).
To connect the Carrier humidistat (HL38MG029):
1. Route the humidistat 2--conductor cable (field--sup-plied) through the hole provided in the unit cornerpost.
2. Feed wires through the raceway built into the cornerpost (see Fig. 42) to the 24--v barrier located on theleft side of the control box. The raceway provides theUL--required clearance between high--voltage andlow--voltage wiring.
3. Use wire nuts to connect humidistat cable to the leadsin the low–voltage wiring (as shown in Fig. 45), con-necting PKN to PNK and PNK/BLK to PNK/BLK.
To connect the Thermidistat device (33CS2PPRH--03):
1. Route the Thermidistat multi--conductor thermostatcable (field--supplied) through the hole provided inthe unit corner post.
2. Feed wires through the raceway built into the cornerpost (see Fig. 42) to the 24--v barrier located on theleft side of the control box. The raceway provides theUL--required clearance between high--voltage andlow--voltage wiring.
3. The Thermidistat has dry contacts at terminals D1and D2 for dehumidification operation (see Fig. 46).The dry contacts must be wired between CTBterminal R and the PNK/BLK lead to the LTLOswitch with field--supplied wire nuts. Refer to theinstallation instructions included with the CarrierEdge Thermidistat device (Form 33CS--74SI or latest)for more information.
48HC
48LC
28
% RELATIVE HUMIDITY
C09295
Fig. 43 -- Accessory Field--Installed Humidistat
®
C09296
Fig. 44 -- EDGE Pro Thermidistat
-48HC500325
PNK
RED
BRN TRAN
BRN CONTROL BD
24V
5
BRN
TRAN FROM POWER SCHEMATIC
24V
BRNRED
24VGRN/YEL
3.2 AMPS
ORN BLU RED BRN YEL
PNK
WHT RED GRA
BRN
FOR FIELD USE
RED
PNK
BRN COM24VCONT
PMRFIOP/ACCY
RED BRN
DDCONLY
CCHTS460/575V ONLY
CCHR BLKBLKBRN
BRN CTB-C
RED
RED
BRN COFS
FIELDCONTROLWIRING
GRA
YEL
(SEE NOTE 1)
CTB
RED
LOGI
C BRN
COFS(FIOP)
SMOKE CONTROLMODULE
FIOP/ACCESSORY
16
109
ORN
BRNPOWER24 VAC
6
1714
3
5
4
NC
NOBLU
TROUBLENC
ALARMNO
RJ-45RETURN SMOKE
SENSOR
RJ-45SUPPLYSMOKE
SENSOR
FIOP/ACCESSORY
RED
GRA
YEL
GRN
PNK
1
2
4
3
6
7
8
9
PL19-
WHT5
GRA
ORN
BRN
BLU
RED
GRA
YEL
GRA
PNK
WHT
RED
BRN
C BRN
BRN CLO1 TERM BD3
BRN
DD IFMCBRN
10987654321
DDC
1
6
5
4
3
2
7
DDC X
THERMO-STAT
C
G
W2
W1
Y2
Y1
R
1 2 3 4 5 6 7 8 9
4 6 8 9753
101021
ECON
BLU
YEL
BLK
RED
1
2
3
4
5
6
4
6
5
3
2
1
CLO1/COMP1
BRN
VIO
BLU
123 PMR
1 2 3 4 5 6 7 8
4 6 875321
CNTL
BRD
WHT
ORN
BRN
BRN
BLK
RED
99
RED
DDC
1
2
3
4
5
6
CLO2/COMP2
7
HPS1 LPS1
CKT
1
REMO
TESH
UTDO
WN
UNIT SHUTDOWN
SMOK
ESH
UTDO
WN
24V
OUT C
SMOK
EAL
ARM
JMP4 JMP3
JMP1
OCCU
PANC
Y
JMP2
R
JMP6
GRA
GRA
GRA
PNK
BRN
RED
GRA
GRA
PNK
PNK
VIO
BRN
ORN
RED
1
6
5
4
3
2
7
REHEAT8
JMP5
JMP7
LPSBLU BLU
HPSBLK BLK
C
CKT
2
GRA
1010
RED
1111
RED
1212
DDC
PNK
T'STAT
4 5321 6 8 97 10
4
6
7
5
3
2
1BRN
GRN
PNK
ORN
YEL
BLU
WHT
BLU
BRN
HPS2 LPS2
C
ORN
COFS (FIOP)
BLUBLU
BLU
VIO ORN
VIO
WHT
O F
M C
WHT
FPT
BLU
BLK
YELBRN
BLKBLU
GRN/YEL
HIGHVOLTAGE
OFM
YEL
BRN
BRN
BRN
SF
BLK
BLK BRN
BRN
CLO2/COMP2-2
LDR
WHT
LDR(SEE NOTE 3)
SEE NOTE 5
BRN
YEL
BLU
BLK
1 2 3 4
SAT/OAT
1PN
K
2VI
O
3BR
N
4OR
N
CBPNK
YEL
BRN
GRA
BLK
WHT
RED
LTLO
BRNCLV
RDV
BLK
PNK/BLK GRA
WHT
BRN BLU
RLV
BLU
REHEATCONTROL
1
6
5
4
3
2
7
J1
8
2
1
4
5
6
7
3
8
99
1
2
3
4
5
6
4
6
5
3
2
1J2
77
1010
1111
CR2
DHRB
DHRA
HR1
CR1
HR1
DHRA
DHRB
DHRB2
DHRB2
CR1
CR2
BRN
BRN YEL
YEL
RED
FROM POWER SCHEMATIC
24V
GRN/YEL
CB
BRNTRAN2
1
2
4
5
6
WHT
WHT
YEL
GRA
GRA(J1-5)
(J1-6)
ORN
ORN
ORN(J1-11)
ORN(J1-10)
HU
PNK
HUMIDISTATACCESSORY
PNK/BLK
LAS1BLU
BLU
GRY
WHT
LAS3
OFR1
YEL
11 12
OFR2
11 12
14
BLU
GRA
OFR1
PNK/BLK OFR2 BRNLCTB C
YEL OFR1 BRN
PNK
GRA
BRN CLO2/COMP2-2
C13391Fig. 45 -- Typical Humidi--MiZerR Adaptive Dehumidification System Humidistat Wiring
48HC
48LC
29
RcRhW1
GY2C
O/W2/BY1
OATRRS
SRTNHUM
D1D2V+Vg
X*
C
G
W2
W1
Y2
Y1
R
Edge Programable ThermostatUnit CTB
THERMOSTAT
*Connection not required.
Humidi-MiZer™ FIOP
C13066Fig. 46 -- Typical Rooftop Unit with Humidi--MiZer Adaptive Dehumidification System
with EDGE Pro Thermidistat Device
EconoMi$er X (Factory--Option)
For details on operating 48LC units equipped with thefactory--installed EconoMi$er X option, refer toEconoMi$er X Factory--Installed Option Low LeakEconomizer for 2 Speed SAVt (Staged Air Volume)Systems (Catalog No. LLECON--02SI, or later).
ComfortLINK (Factory--Option)
For details on operating 48LC units equipped with thefactory installed ComfortLINK option, refer to Controls,Start--Up, Operation and Troubleshooting for 48/50LC04--06 Single Package Rooftop Unit with ComfortLINKControls (Catalog No. 48--50LC--C01T, or later).
NOTE: ComfortLINK is not available on units equippedwith Humidi--MiZer .
C12150
Fig. 47 -- 48LC Control Box Component Locations with ComfortLINK
48HC
48LC
30
C12151
Fig. 48 -- ComfortLINK Control Wiring Diagram (48LC 3--5 Ton Units)
48HC
48LC
31
RTU Open Control System
The RTU Open control is factory--mounted in the 48LCunit’s main control box, to the left of the CTB. SeeFig. 50. Factory wiring is completed through harnessesconnected to the CTB. Field connections for RTU Opensensors will be made at the Phoenix connectors on theRTU Open board. The factory--installed RTU Opencontrol includes the supply--air temperature (SAT) sensor.The outdoor air temperature (OAT) sensor is included inthe FIOP/accessory EconoMi$er2 package.
The RTU Open controller is an integrated component of theCarrier rooftop unit. Its internal application programmingprovides optimum performance and energy efficiency. RTUOpen enables the unit to run in 100% stand--alone controlmode, Carrier’s I--Vu Open network, or a Third PartyBuilding Automation System (BAS). On--board DIPswitches allow you to select your protocol (and baud rate) ofchoice among the four most popular protocols in use today:BACnet, Modbus, Johnson N2 and LonWorks. (See Fig. 49.)
Refer to Table 4, RTU Open Controller Inputs and Outputsfor locations of all connections to the RTU Open board.
J4J2J1
J5 J5
J22
J17
J19 J14
J11
J3
J13
J12
J15J20
Network Comm
Configurable - Input_8
24 VAC
Configurable - Input_5
24 VAC
Configurable - Input_3
24 VAC
Input_9 (Hum
idistat)24 VA
C
24 VAC
Input _8 (Enthalpy)A
O-1 (EC
ON
)G
nd(O
AT)G
nd(SAT)
Input_5 (SMK
)
Input_4 (R)
D
O-5 (Y1)
D
O-4 (Y2)
D
O-3 (W
1)
DO
-2 (W2)
D
O-1 (G
)
Gnd
Input_3 (X)
24 VA
C IN
+24 VDC
Input_2 (CO
2/RH
)G
nd+24 VD
CInput_1 (C
O2/R
H)
Gnd
Board Power
(AO-1)
0-10VDC
4-20mA
DO-6(H) HumidimizerDO-7 (Reversing Valve/High Speed Fan)
DO-8(Power Exhaust)
LonworksOption CardPort
Example set forBACnet MS/TPand 76.8K baud(1, 2, and 4 ON)Recommended for alli-Vu Open installations
Protocol Selector SPT (temp input) BACnet, Modbus, or N2(LON connection J15)SPT (common)
SPT (offset input)
*Removeboth for 0-5V
C12751Fig. 49 -- RTU Open Multi--Protocol Control Board
C12152
Fig. 50 -- 48LC Control Box Component Locations with RTU Open
48HC
48LC
32
ESL
ESL
D48
HC50
0173
BLK
1 2IA
Q6 7
PL18
-3BL
UPL
18-4
RED
PL18
-1BR
NPL
18-2
BLK
BLU
RED
BRN
(FIO
P/AC
CY)
BLUYEL
7
1211
9514328
10
6
GRA
PNK
VIO YE
L
BLU
BLK
BRN
RED
PL6-
R
7 1211 9514328106 PL6
PNK
PNK
VIO
1 2 3
ECON
OMO
TOR
SAT
BLK
RED
WHT
TR TR1 2
ACCU
-SE
NSOR
GRA
3GR
A
RED
BLK
24V
33CS
ENTH
SW
GRA
LOW
GND
ENTH
ALPY
(FIO
P/AC
CESS
ORY)
RED
BLK
BLK
RED
ECON
OMIZ
ER
(FIO
P/AC
CESS
ORY)
PNK
VIO
ORN
BRN
ENTHALPY (ACCY)
(FIO
P/AC
CY) 500
RESI
STOR
OAT
RED
BLK
GRA
G W2
W1 Y2 Y1
HS
PE
LSB
MSB
865321 74 9 10 65321 74
J2J1
6 5 4J4
3 2 1
T-55
T-56
ACCE
SSOR
YSE
TSE
N
SEN
ACCE
SSOR
Y
(OR)
- + - +
6 5 4 3 2 18 7
J30-
10VD
C
J5
HUMI
DIST
AT(A
CCES
SORY
)
4-20
mA
65
43
21
87
J11
J21
BT48
5
321J1
9
SHLD
NET-
NET+
J15
COMM
OPTI
ON
J12
ACCE
SSPO
RT
43
21
J13
COMM
SPAC
ESE
NSOR
234J2
0
1
J14
RTU OPEN
OAQ
RED
WHT
BRN
GRN
PNK
ORN
YEL
BLU
RED
BLU
Rnet+
Rnet-
12V
GND
ORN
BRN
VIO
PNK
PNK
RELA
YS
65
43
21
(ACC
Y)RE
LATI
VEHU
MIDI
TY8 7 6 5 4 3 2 1
PROTOCOL SELECTOR
J17SW
3
GRA
GRA
BLU
BLK
RED
RED
REDR
CTB
48LC
CON
TROL
RTU
-OPE
N 20
8/230
V,46
0V,57
5V 3-
5 TON
NOTE
S:1.
TERM
INAL
BOA
RD S
CHEM
ATIC
LAYO
UT D
OES
NOT
MATC
H AC
TUAL
TER
MINA
L BOA
RD
TO
SIMP
LIFY
CIRC
UIT
TRAC
ES.
2. EN
SURE
DES
IGNA
TED
JUMP
ERS
ON T
ERMI
NAL B
OARD
ARE
CUT
WHE
N AD
DING
SMO
KE D
ETEC
TORS
, PHA
SE LO
SS R
ELAY
, OCC
UPAN
CY A
ND R
EMOT
E SH
UTDO
WN.
3. CO
MPRE
SSOR
LOAD
ER P
LUG
CON
TAIN
S BR
IDGE
REC
TIFI
ER T
O CO
NVER
T AC
TO
DC.
4. FA
CTOR
Y W
IRIN
G FO
R SI
GNAL
CON
NECT
IONS
: LO=
1 HI=
2, R
ELOC
ATIO
N OF
SIG
NAL C
ONNE
CTIO
N M
AY B
E RE
QUIR
ED W
HEN
USIN
G F
IELD
INST
ALLE
D AC
CESS
ORIE
S -
CON
SULT
INST
ALLA
TION
I
NSTR
UCTI
ONS
FOR
PROP
ER
SEL
ECTI
ON.
5. W
ITH
DDC
OPTI
ON T
HERE
WILL
BE
WIR
ES IN
PIN
S 6,
7, AN
D 8.
6. FO
R HI
GH S
PEED
BLO
WER
TES
TING
, C
ONNE
CT Y
ELLO
W A
ND W
HITE
WIR
ES.
DIS
CONN
ECT
FOR
NORM
AL O
PERA
TION
S.
5 4 3 2 1
YEL
WHT
3 2
6PN
KOR RE
D6
54321
VFD
F
AN
BOAR
D
J2J1
ORN PN
K/BL
K(N
OT U
SED)
BRN
4321JW
1
JW2
YEL
1413121110
YEL
26PN
K
15W
HT
VFD
PL25
BLU
BLU
PNK
YEL
PNK
WHT
316
PNK
4PN
K
5
PNK
ECM
HILO
YEL
WHT
RED
R CTB
CLGNYE
LGR
N/YE
LBL
KBR
N
54
32
1
TO "C
" CO
IL
HIGH
VOLT
AGE
3 PH
IFM
DD IFM SE
ENO
TE 4
DDC
HARN
ESS4 2 13567
BRN
GRN
PNK
ORN
YEL
BLU
WHT
YEL
BRN OR
N YEL
421 3 5 6 7
BRN
GRN
PNK
ORN
YEL
BLU
WHT
GRA
GRA
BLK
WHT
RED
5GR
NOR
N
ORN
T'STA
TTO
CTB
DDC
14GR
AGR
A
TAN
TO P
OWER
EXH
AUST
ACCE
SSOR
YTAN
C CTB
YEL
GRA
YEL
GRA
5
YEL
WHT
NOTE 6
IFM
TDR
CONT
ROL
LOGI
C
RR I SPT
NO NC
VIO
GRARE
D
RED
CBR
N
BRN
GRA
SEE
POW
ER
LABE
LID
MRVI
OBR
N57
5V O
NLY
575V
ONL
YRE
D
BRN
575V
ONL
Y
BLK
208/2
30,46
0V
VIO
VIO
BRN
GROU
NDED
THR
U ST
ANDO
FF
CR BR
IGC
HS
LS1
3
BLU
BLU
RS1
3
GVR
CR BRL1BM
RT
CCM
12
3
FAN
LOGI
C
SAFE
TYLO
GIC
HV TRAN
GVR
J2 WIFO G R RS RS LS LS CS CS GV
YEL
GV
FS CGR
N/YE
L
VIO
(208
,230V
)
FLAM
E SE
NSORGR
N/YE
LI
YEL
BLK
ORN
WHT
RED
BRN
C
MGV
M M HC
TWO
STAG
E
GRA
PNK
ORN
BLK
(460
)1
0
1PH
IFM
ONLY
BLK GR
A
MGV
12
3
SING
LE S
TAGE
RED
GRA
BLK
BLK
BRN
DD IF
MC
BRN
10
9
8
7
6
5
4
3
2
1
DDC
1 65432 7DDC
X
THER
MO-
STATC G W
2
W1
Y2 Y1 R
1
2
3
4
5
6
7
8
9
4
6
8
9
7
5
3
10 10
2
1
ECON
1
2
3
4
SAT/OAT
BLU
YEL
BLK
RED
1 2 3 4 5 6
4 65321
CLO1
/CO
MP1
BRN
VIO
BLU
1
2
3
PMR
1
2
3
4
5
6
7
8
4
6
8
7
5
3
2
1
CONTLBOARD
WHT
ORN
BRN
BRN
BLK
RED
99
RED
DDC
1 2 3 4 5 6
CLO2
/CO
MP2
7
REMOTESHUTDOWN
UNIT
SH
UTDO
WN
SMOKESHUTDOWN
24V OUTC
SMOKEALARM
JMP4
JMP3
JMP1
OCCUPANCY
JMP2
R
JMP6
GRA
GRA
GRA
PNK
BRN
RED
GRA
GRA
PNK
PNK
VIO
BRN
ORN
RED
1PNK
2VIO
3BRN
4ORN
1 65432 7
REHE
AT8
JMP5
JMP7
C BL
U
GRA
1010
RED
1111
RED
1212
DDC
PNK
T'STA
T
4
5
3
2
1
6
8
9
7
10
4 6 75321BR
N
GRN
PNK
ORN
YEL
BLU
WHT
BLU
FIEL
DCO
NTRO
LW
IRIN
G
HPS1
LPS1
CKT 1
LPS
BLU
BLU
HPS
BLK
BLK
CKT2
HPS2
LPS2
C
ORN
COFS
(FIO
P)
BLU
BLU
BLU
RED
BRN
DDC
ONLY
BRN
RED
BRN
COFS
BRN
LCTB
-CRE
D
LOGIC
BRN
COFS
(FIO
P)
(SEE
NOT
E 1)
CTB
C48
HC50
0010
TRAN
24V
BRN
GRA
CBR
N
BRN
CLO1
TER
M BD
3
RED
FROM
POW
ER S
CHEM
ATIC
24V
GRN/
YEL BR
NTR
AN
BRN
CONT
ROL B
D
24V5
CB
3.2 A
MPS
ORN
BLU RE
DBR
N
WHT
YEL PN
KRED
GRA
BRN
FOR
FIEL
D US
E
RED
PNK
BRN
COM
24V
CONT
PMR
FIOP
/ACC
Y
RED
BRN
CCHT
S
460/5
75V
ONLY
CCHR
TDR
BD3
BRN
VIO
ORN
VIO
WHT
O F M C
WHT
LAS
FPT
BLK
YEL
BRN BL
KBL
UGR
N/YE
L
HIGH
VOLT
AGE
OFM
YEL
YEL
BRN
BRN
BRN
SF
BLK
BLK
(SEE
NOT
E 3)
BRN
CLO2
/CO
MP2
-2LDR
WHT
LDR
BRN
SMOK
E CO
NTRO
LMO
DULE
FIOP
/ACC
ESSO
RY
1610 9
ORN
BRN
POW
ER24
VAC
6 17 14 3 5 4
NC NOBL
U
TROU
BLE
NC ALAR
MNO
RJ-4
5RE
TURN
SM
OKE
SENS
OR
RJ-4
5SU
PPLY
SMOK
ESE
NSOR
FIOP
/AC
CESS
ORY
RED
GRA
YEL
GRN
PNK
1 2 4 3 6 7 8 9
PL19
-
WHT
5
GRA
GRA
ORN
BRN
BLU
RED
GRA
YEL
GRA
PNK
WHT
SEE
NOTE
5
BLK
BRN
RED
BRN
BLK
C13392Fig. 51 -- RTU Open System Control Wiring Diagram
48HC
48LC
33
ESL
ESL
D48
HC50
0173
BLK
1 2IA
Q6 7
PL18
-3BL
UPL
18-4
RED
PL18
-1BR
NPL
18-2
BLK
BLU
RED
BRN
(FIO
P/AC
CY)
BLUYEL
7
1211
9514328
10
6
GRA
PNK
VIO YE
L
BLU
BLK
BRN
RED
PL6-
R
7 1211 9514328106 PL6
PNK
PNK
VIO
1 2 3
ECON
OMO
TOR
SAT
BLK
RED
WHT
TR TR1 2
ACCU
-SE
NSOR
GRA
3GR
A
RED
BLK
24V
33CS
ENTH
SW
GRA
LOW
GND
ENTH
ALPY
(FIO
P/AC
CESS
ORY)
RED
BLK
BLK
RED
ECON
OMIZ
ER
(FIO
P/AC
CESS
ORY)
PNK
VIO
ORN
BRN
ENTHALPY (ACCY)
(FIO
P/AC
CY) 500
RESI
STOR
OAT
RED
BLK
GRA
G W2
W1 Y2 Y1
HS
PE
LSB
MSB
865321 74 9 10 65321 74
J2J1
6 5 4J4
3 2 1
T-55
T-56
ACCE
SSOR
YSE
TSE
N
SEN
ACCE
SSOR
Y
(OR)
- + - +
6 5 4 3 2 18 7
J30-
10VD
C
J5
HUMI
DIST
AT(A
CCES
SORY
)
4-20
mA
65
43
21
87
J11
J21
BT48
5
321J1
9
SHLD
NET-
NET+
J15
COMM
OPTI
ON
J12
ACCE
SSPO
RT
43
21
J13
COMM
SPAC
ESE
NSOR
234J2
0
1
J14
RTU OPEN
OAQ
RED
WHT
BRN
GRN
PNK
ORN
YEL
BLU
RED
BLU
Rnet+
Rnet-
12V
GND
ORN
BRN
VIO
PNK
PNK
RELA
YS
65
43
21
(ACC
Y)RE
LATI
VEHU
MIDI
TY8 7 6 5 4 3 2 1
PROTOCOL SELECTOR
J17SW
3
GRA
GRA
BLU
BLK
RED
RED
REDR
CTB
48LC
CON
TROL
RTU
-OPE
N 20
8/230
V,46
0V,57
5V 3-
5 TON
NOTE
S:1.
TERM
INAL
BOA
RD S
CHEM
ATIC
LAYO
UT D
OES
NOT
MATC
H AC
TUAL
TER
MINA
L BOA
RD
TO
SIMP
LIFY
CIRC
UIT
TRAC
ES.
2. EN
SURE
DES
IGNA
TED
JUMP
ERS
ON T
ERMI
NAL B
OARD
ARE
CUT
WHE
N AD
DING
SMO
KE D
ETEC
TORS
, PHA
SE LO
SS R
ELAY
, OCC
UPAN
CY A
ND R
EMOT
E SH
UTDO
WN.
3. CO
MPRE
SSOR
LOAD
ER P
LUG
CON
TAIN
S BR
IDGE
REC
TIFI
ER T
O CO
NVER
T AC
TO
DC.
4. FA
CTOR
Y W
IRIN
G FO
R SI
GNAL
CON
NECT
IONS
: LO=
1 HI=
2, R
ELOC
ATIO
N OF
SIG
NAL C
ONNE
CTIO
N M
AY B
E RE
QUIR
ED W
HEN
USIN
G F
IELD
INST
ALLE
D AC
CESS
ORIE
S -
CON
SULT
INST
ALLA
TION
I
NSTR
UCTI
ONS
FOR
PROP
ER
SEL
ECTI
ON.
5. W
ITH
DDC
OPTI
ON T
HERE
WILL
BE
WIR
ES IN
PIN
S 6,
7, AN
D 8.
6. FO
R HI
GH S
PEED
BLO
WER
TES
TING
, C
ONNE
CT Y
ELLO
W A
ND W
HITE
WIR
ES.
DIS
CONN
ECT
FOR
NORM
AL O
PERA
TION
S.
5 4 3 2 1YE
L
WHT
3 2
6PN
KOR RE
D6
54321
VFD
F
AN
BOAR
D
J2J1
ORN PN
K/BL
K(N
OT U
SED)
BRN
4321JW
1
JW2
YEL
1413121110
YEL
26PN
K
15W
HT
VFD
PL25
BLU
BLU
PNK
YEL
PNK
WHT
316
PNK
4PN
K
5
PNK
ECM
HILO
YEL
WHT
RED
R CTB
CLGNYE
LGR
N/YE
LBL
KBR
N
54
32
1
TO "C
" CO
IL
HIGH
VOLT
AGE
3 PH
IFM
DD IFM SE
ENO
TE 4
DDC
HARN
ESS4 2 13567
BRN
GRN
PNK
ORN
YEL
BLU
WHT
YEL
BRN OR
N YEL
421 3 5 6 7
BRN
GRN
PNK
ORN
YEL
BLU
WHT
GRA
GRA
BLK
WHT
RED
5GR
NOR
N
ORN
T'STA
TTO
CTB
DDC
14GR
AGR
A
TAN
TO P
OWER
EXH
AUST
ACCE
SSOR
YTAN
C CTB
YEL
GRA
YEL
GRA
5
YEL
WHT
NOTE 6
IFM
TDR
CONT
ROL
LOGI
C
RR I SPT
NO NC
VIO
GRARE
D
RED
CBR
N
BRN
GRA
SEE
POW
ER
LABE
LID
MRVI
OBR
N57
5V O
NLY
575V
ONL
YRE
D
BRN
575V
ONL
Y
BLK
208/2
30,46
0V
VIO
VIO
BRN
GROU
NDED
THR
U ST
ANDO
FF
CR BR
IGC
HS
LS1
3
BLU
BLU
RS1
3
GVR
CR BRL1BM
RT
CCM
12
3
FAN
LOGI
C
SAFE
TYLO
GIC
HV TRAN
GVR
J2 WIFO G R RS RS LS LS CS CS GV
YEL
GV
FS CGR
N/YE
L
VIO
(208
,230V
)
FLAM
E SE
NSORGR
N/YE
LI
YEL
BLK
ORN
WHT
RED
BRN
C
MGV
M M HC
TWO
STAG
E
GRA
PNK
ORN
BLK
(460
)1
0
1PH
IFM
ONLY
BLK GR
A
MGV
12
3
SING
LE S
TAGE
RED
GRA
-48
HC50
0325
PNK
RED
BRN
TRAN
BRN
CONT
ROL B
D
24V5
BRN
TRAN
FRO
M PO
WER
SCH
EMAT
IC
24V
BRN
RED
24V GR
N/YE
L3.2
AMP
S
ORN
BLU
RED
BRN
YEL PN
K
WHT
RED
GRA
BRN
FOR
FIEL
D US
E
RED
PNK
BRN
COM
24V
CONT
PMR
FIOP
/AC
CY
RED
BRN
DDC
ONLY
CCHT
S46
0/575
V ON
LY
CCHR
BLK
BLK
BRN
BRN
CTB-C
RED
RED
BRN
COFS
FIEL
DCO
NTRO
LW
IRIN
GGRA
YEL
(SEE
NOT
E 1)
CTB
RED
LOGIC
BRN
COFS
(FIOP
)
SMOK
E CO
NTRO
LMO
DULE
FIOP
/ACC
ESSO
RY
1610 9
ORN
BRN
POW
ER24
VAC
6 17 14 3 5 4
NC NOBL
U
TROU
BLE
NC ALAR
MNO
RJ-4
5RE
TURN
SM
OKE
SENS
OR
RJ-4
5SU
PPLY
SMOK
ESE
NSOR
FIOP
/AC
CESS
ORY
RED
GRA
YEL
GRN
PNK
1 2 4 3 6 7 8 9
PL19
-
WHT
5
GRA
ORN
BRN
BLU
RED
GRA
YEL
GRA
PNK
WHT
RED
BRN
C BR
N
BRN
CLO1
TERM
BD3
BRN
DD IF
MC
BRN
10
9
8
7
6
5
4
3
2
1
DDC
1 65432 7
DDC
X
THER
MO-
STATC G W
2
W1
Y2 Y1 R
1
2
3
4
5
6
7
8
9
4
6
8
9
7
5
3
10 10
2
1
ECON
BLU
YEL
BLK
RED
1 2 3 4 5 6
4 65321
CLO1
/CO
MP1
BRN
VIO
BLU
1
2
3
PMR
1
2
3
4
5
6
7
8
4
6
8
7
5
3
2
1
CNTLBRD
WHT
ORN
BRN
BRN
BLK
RED
99
RED
DDC
1 2 3 4 5 6
CLO2
/CO
MP2
7
HPS1
LPS1
CKT 1
REMOTESHUTDOWN
UNIT
SH
UTDO
WN
SMOKESHUTDOWN
24V OUTC
SMOKEALARM
JMP4
JMP3
JMP1
OCCUPANCY
JMP2
R
JMP6
GRA
GRA
GRA
PNK
BRN
RED
GRA
GRA
PNK
PNK
VIO
BRN
ORN
RED
1 65432 7
REHE
AT8
JMP5
JMP7
LPS
BLU
BLU
HPS
BLK
BLK
C
CKT 2
GRA
1010
RED
1111
RED
1212
DDC
PNK
T'STA
T
4
5
3
2
1
6
8
9
7
10
4 6 75321BR
N
GRN
PNK
ORN
YEL
BLU
WHT
BLU
BRN
HPS2
LPS2
C
ORN
COFS
(FIO
P)
BLU
BLU
BLU
VIO
ORN
VIO
WHT
O F M C
WHT
FPT
BLU
BLK
YEL
BRN
BLK
BLU
GRN/
YEL
HIGH
VOLT
AGE
OFM
YEL
BRN
BRN
BRN
SF
BLK
BLK
BRN
BRN
CLO2
/CO
MP2
-2LDR
WHT
LDR
(SEE
NOT
E 3)
SEE
NOTE
5
BRN
YEL
BLU
BLK
1
2
3
4
SAT/
OAT
1PNK
2VIO
3BRN
4ORN
CBPN
K
YEL
BRN
GRA
BLK
WHT RE
D
LTLO
BRN
CLV
RDV
BLK
PNK/
BLK
GRA
WHT
BRN
BLU
RLV
BLU
REHE
ATCO
NTRO
L
1 65432 7 J18
21 4 5 6 73 8
99
1 2 3 4 5 6
4 65321J2 7
7
1010
1111
CR2
DHRB
DHRA
HR1
CR1
HR1
DHRA
DHRB
DHRB
2
DHRB
2
CR1
CR2
BRN
BRN
YEL
YEL
RED
FROM
PO
WER
SC
HEMA
TIC
24V
GRN/
YEL
CB
BRN
TRAN
2
1 2 4 5 6
WHT
WHT
YEL
GRA
GRA
(J1-5
)
(J1-6
)
ORN
ORN
ORN
(J1-1
1)
ORN
(J1-1
0)
HU
PNK
HUMI
D-IS
TAT
ACCY
PNK/
BLK
LAS1
BLU
BLU
GRY
WHT
LAS3
OFR1
YEL
1112
OFR2
1112 14
BLU
GRA
OFR1
PNK/
BLK
OFR2
BRN
LCTB
CYE
LOF
R1BR
N
PNK
GRA
BRN
CLO2
/COMP
2-2
C13393Fig. 52 -- RTU Open System Control Wiring Diagram with Humidi--MiZerR
48HC
48LC
34
Table 4 – RTU Open Controller Inputs and Outputs
POINT NAME BACnet OBJECTNAME TYPE OF I/O CONNECTION PIN
NUMBER(S)
DEDICATED INPUTSSpace Temp / Zone Temp zone_temp AI (10K Thermistor) J20---1 & 2Supply Air Temperature sa_temp AI (10K Thermistor) J2---1 & 2Outdoor Air Temperature oa_temp AI (10K Thermistor) J2---3 & 4Space Temperature Offset Pot stpt_adj_offset AI (100K Potentiometer) J20---3 & 4Safety Chain Feedback safety_status DI (24 VAC) J1---9Compressor Safety Status comp_status DI (24 VAC) J1---2Fire Shutdown Status firedown_status DI (24 VAC) J1---10Enthalpy Status enthalpy_status DI (24 VAC) J2---6 & 7Humidistat Input Status humstat_status DI (24 VAC) J5---7 & 8Zone Temperature n/a n/a J13---1, 2, 3, 4
CONFIGURABLE INPUTSIndoor Air CO2 iaq AI (4---20 ma)
J4---2 & 3 or J4---5 & 6Outdoor Air CO2 oaq AI (4---20 ma)Space Relative Humidity space_rh AI (4---20 ma)Supply Fan Status* sfan_status DI (24 VAC)
J5---1 or J5---3 or J5---5Filter Status* filter_status DI (24 VAC)Door Contact Input* door_contact_status DI (24 VAC)Occupancy Contact* occ_contact_status DI (24 VAC)
OUTPUTSEconomizer Output econ_output AO (4---20ma) J2---5Supply Fan Relay State sfan DO Relay (24VAC , 1A) J1---4Compressor 1 Relay State comp_1 DO Relay (24VAC , 1A) J1---8Compressor 2 Relay State comp_2 DO Relay (24VAC , 1A) J1---7Heat Stage 1 Relay State heat_1 DO Relay (24VAC , 1A) J1---6Heat Stage 2 Relay State heat_2 DO Relay (24VAC , 1A) J1---5Power Exhaust Relay State pexh DO Relay (24VAC , 1A) J11---1 & 3Humidimizer Relay State dehum DO Relay (24VAC, 1A) J11---7, 8
LEGENDAI --- Analog InputAO --- Analog OutputDI --- Discrete InputDO --- Discrete Output* These inputs (if installed) take the place of the default input on the specific channel according to schematic.Parallel pins J5---1 = J2---6, J5---3 = J1---10, J5---5 = J1---2 are used for field--- installation.
The RTU Open controller requires the use of a Carrierspace sensor. A standard thermostat cannot be used withthe RTU Open system.
Supply Air Temperature (SAT) Sensor —
On FIOP--equipped 48LC unit, the unit is supplied with asupply--air temperature (SAT) sensor (33ZCSENSAT).This sensor is a tubular probe type, approx 6--inches (152mm) in length. It is a nominal 10--k ohm thermistor.
The SAT is factory--wired. The SAT probe is wire--tied tothe supply--air opening (on the horizontal opening end) inits shipping position. Remove the sensor for installation.Re--position the sensor in the flange of the supply--airopening or in the supply air duct (as required by localcodes). Drill or punch a 1/2--in. hole in the flange or duct.Use two field--supplied, self--drilling screws to secure thesensor probe in a horizontal orientation. See Fig. 53.
SUPPLY AIR RETURN AIR
SUPPLY AIRTEMPERATURESENSOR
ROOFCURB
C08200
Fig. 53 -- Typical Mounting Location for Supply AirTemperature (SAT) Sensor on Small Rooftop Units
48HC
48LC
35
Outdoor Air Temperature (OAT) Sensor —
The OAT is factory--mounted in the EconoMi$er2 (FIOPor accessory). It is a nominal 10k ohm thermistor attachedto an eyelet mounting ring.
EconoMi$er2 —
The RTU Open control is used with EconoMi$er2 (optionor accessory) for outdoor air management. The damperposition is controlled directly by the RTU Open control;EconoMi$er2 has no internal logic device.
Outdoor air management functions can be enhanced withfield--installation of these accessory control devices:
Enthalpy control (outdoor air or differential sensors)Space CO2 sensorOutdoor air CO2 sensor
Field Connections
Field connections for accessory sensors and input devices aremade at the RTU Open, at plugs J1, J2, J4, J5, J11 and J20.All field control wiring that connects to the RTU Open mustbe routed through the raceway built into the corner post asshown in Fig. 42. The raceway provides the UL requiredclearance between high-- and low--voltage wiring. Pass thecontrol wires through the hole provided in the corner post,then feed the wires thorough the raceway to the RTU Open.Connect to the wires to the removable Phoenix connectorsand then reconnect the connectors to the board.
Space Temperature (SPT) Sensors —
There are two types of SPT sensors available from Carrier,resistive input non-communicating (T55, T56, and T59)and Rnet communicating (SPS, SPPL, SPP, and SPPF)sensors. Each type has a variety of options consisting of:timed override button, set point adjustment, a LCDscreen, and communication tie in. Space temperature canbe also be written to from a building network or zoningsystem. However, it is still recommended that return airduct sensor be installed to allow stand-alone operation forback-up. Refer to the configuration section for details oncontroller configurations associated with space sensors.
S 33ZCT55SPT, space temperature sensor with override
button (T--55)
S 33ZCT56SPT, space temperature sensor with overridebutton and setpoint adjustment (T--56)
S 33ZCT59SPT, space temperature sensor with LCD(liquid crystal display) screen, override button, andsetpoint adjustment (T--59)
Use 20 gauge wire to connect the sensor to the controller.The wire is suitable for distances of up to 500 ft. Use athree--conductor shielded cable for the sensor and setpointadjustment connections. If the setpoint adjustment(slidebar) is not required, then an unshielded, 18 or 20gauge, two--conductor, twisted pair cable may be used.
Connect T--55: See Fig. 54 for typical T--55 internalconnections. Connect the T--55 SEN terminals to RTUOpen J20--1 and J20--2. See Fig. 55.
2 3 4 5 61
SW1
SEN
BRN (GND)BLU (SPT)
RED(+)WHT(GND)
BLK(-) CCN COM
SENSOR WIRING
C08201Fig. 54 -- T--55 Sensor
SEN
SEN
J20-1
J20-2
C08460
Fig. 55 -- RTU Open T--55 Sensor Connections
Connect T--56: See Fig. 56 for T--56 internal connections.Install a jumper between SEN and SET terminals asillustrated. Connect T--56 terminals to RTU Open J20--1,J20--2 and J20--3 per Fig. 57.
2 3 4 5 61
SW1
SEN SET
Cool Warm
BRN (GND)BLU (SPT)
RED(+)WHT(GND)
BLK(-) CCN COM
SENSOR WIRING
JUMPERTERMINALSAS SHOWN
BLK(T56)
C08202
Fig. 56 -- T--56 Internal Connections
SEN J20-1
J20-2SEN
SET
Jumper
J20-3SET
C08461
Fig. 57 -- RTU Open T--56 Sensor Connections
48HC
48LC
36
Connect T--59: The T--59 space sensor requires a separate,isolated power supply of 24 VAC. See Fig. 58 for internalconnections at the T--59. Connect the SEN terminal (BLU)to RTU Open J20--1. Connect the COM terminal (BRN) toJ20--2. Connect the SET terminal (STO or BLK) to J20--3.
OR SET SEN
OPB COM- PWR+
BLU (SPT)
BLK (STO)
24 VAC
SENSORWIRING
POWERWIRING
BRN (COM)
NOTE: Must use a separate isolated transformer.
J20-3
J20-2
J20-1
C10291
Fig. 58 -- Space Temperature Sensor Typical Wiring(33ZCT59SPT)
Indoor Air Quality (CO2) Sensor —
The indoor air quality sensor accessory monitors spacecarbon dioxide (CO2) levels. This information is used tomonitor IAQ levels. Several types of sensors are available,for wall mounting in the space or in return duct, with andwithout LCD display, and in combination with spacetemperature sensors. Sensors use infrared technology tomeasure the levels of CO2 present in the space air.
The CO2 sensors are all factory set for a range of 0 to2000 ppm and a linear mA output of 4 to 20. Refer to theinstructions supplied with the CO2 sensor for electricalrequirements and terminal locations. See Fig. 59 fortypical CO2 sensor wiring schematic.
To controller
24 Vac Line
Dedicated Transformer+-
24 Vacor Vdc
8 7 6 5 4
2 1
SENSOR LEGEND1 +24 Vac/Vdc2 Gnd (-24 Vac/Vdc)4 -Thermistor5 +Thermistor6 4-20 mA7 SIG COM8 0-5 Vdc
C12748
Fig. 59 -- Indoor/Outdoor Air Quality (CO2) Sensor(33ZCSPTCO2--01 or 33ZCSPTCO2LCD--01)
Typical Wiring Diagram
To accurately monitor the quality of the air in theconditioned air space, locate the sensor near a return--airgrille (if present) so it senses the concentration of CO2leaving the space. The sensor should be mounted in alocation to avoid direct breath contact.
Do not mount the IAQ sensor in drafty areas such as nearsupply ducts, open windows, fans, or over heat sources.Allow at least 3 ft (0.9 m) between the sensor and anycorner. Avoid mounting the sensor where it is influencedby the supply air; the sensor gives inaccurate readings ifthe supply air is blown directly onto the sensor or if thesupply air does not have a chance to mix with the room airbefore it is drawn into the return airstream.
Wiring the Indoor Air Quality Sensor: For each sensor,use two 2--conductor 18 AWG (American Wire Gage)twisted--pair cables (unshielded) to connect the separateisolated 24 vac power source to the sensor and to connectthe sensor to the control board terminals.
To connect the sensor to the control, identify the positive(4 to 20 mA) and ground (SIG COM) terminals on thesensor. See Fig. 59. Connect the 4--20 mA terminal toRTU Open J4--2 and connect the SIG COM terminal toRTU Open J4--3. See Fig. 60.
SEN
COM
J4-5
J4-6
OAQ Sensor
24 VACC11086
Fig. 60 -- RTU Open / Outdoor CO2 Sensor(33ZCSPTCO2--01 or 33ZCSPTCO2LCD--01)
Connections
48HC
48LC
37
Outdoor Air Quality Sensor(PNO 33ZCSENCO2 plus weatherproof enclosure) —
The outdoor air CO2 sensor is designed to monitor carbondioxide (CO2) levels in the outside ventilation air andinterface with the ventilation damper in an HVAC system.The OAQ sensor is packaged with an outdoor cover. SeeFig. 61. The outdoor air CO2 sensor must be located in theeconomizer outside air hood.
COVER REMOVED SIDE VIEW
C07135
Fig. 61 -- Outdoor Air Quality Sensor Cover
Wiring the Outdoor Air CO2 Sensor: A dedicatedpower supply is required for this sensor. A two--wire cableis required to wire the dedicated power supply for thesensor. The two wires should be connected to the powersupply and terminals 1 and 2.
To connect the sensor to the control, identify the positive(4 to 20 mA) and ground (SIG COM) terminals on theOAQ sensor. See Fig. 59. Connect the 4 to 20 mAterminal to RTU Open J4--5. Connect the SIG COMterminal to RTU Open J4--6.
SEN
COM
J4-5
J4-6
OAQ Sensor
24 VACC11086
Fig. 62 -- RTU Open / Outdoor CO2 Sensor(33ZCSENCO2) Connections
Space Relative Humidity Sensor or Humidistat —
Humidi--MiZerR Control Wiring: In units equippedwith the Humidi--MiZer option there are two loose wiresloose in the control box (one PNK and one PNK/BLK)used to control the dehumidification function of the unit.These wires are meant to be tied to a space humidistat orthermidistat on an electromechanical unit. On RTU Openequipped units these wires must be connected to J11--7 &8 to allow the Open board to operate the dehumidificationfunction for the unit. Disconnect the J11 Phoenix styleconnector from the board and use the plug screws tosecure the wires as follows: secure the PNK/BLK wires atpin 7 and the PNK wires at pin 8, and then reconnect theplug to the board at J11.
Relative Humidity Sensors (Space or Duct Mounted):The accessory space humidity sensor (33ZCSENSRH-01) orduct humidity sensor (33ZCSENDRH-01) is used to measurethe relative humidity of air within the space or return airduct. For wiring distances up to 500 ft (152 m), use a3--conductor, 18 or 20 AWG shielded cable. The shield mustbe removed from the sensor end of the cable and groundedat the unit end. The current loop power for sensor isprovided by the RTU Open controller as 24vdc. Refer to theinstructions supplied with the RH sensor for the electricalrequirements and terminal locations. RTU Openconfigurations must be changed after adding an RH sensor.See Fig. 63 and 64 for typical RH sensor wiring.
S J4--1 or J4--4 = 24vdc loop power
S J4--2 or J4--5 = 4--20mA signal input
NOTE: The factory default for dehumidification controlis normally open humidistat.
SW2123456
ON
Io Vin Gnd Vo
MOUNTINGHOLES
WIRINGOPENING
Vin - J4-1 or J4-4 24VdcIo - J4-2 or J4-5 -20mA output
C11087
Fig. 63 -- Space Relative humidity Sensor Typical Wiring
48HC
48LC
38
4-20 VAC GND 0-5V mA or or VDC 0-10V
SPAN
ZERO
J4-1 or J4-4 + 24 VDC Supply Voltage
J4-2 or J4-5 (-)4 to 20 mA Current Loop Outputto RTU Open
Relative Humidity Sensor(Polarized Male Connector)
C10839
Fig. 64 -- Duct Relative Humidity Sensor Typical Wiring
Humidistat: The accessory humidistat provides the RTUOpen insight to the relative humidity in the space. Thehumidistat reads the RH level in the space and compares itto its setpoint to operate a dry contact. The humidistat is adedicated input on the configurable input 9 and tells theRTU Open when the RH level is HIGH or LOW. Thenormal condition for humidity is LOW.
To wire in the field:
S J5--8 = 24 VAC source for dry contact
S J5--7 = Signal input
Smoke Detector/Fire Shutdown (FSD) —
On 48LC units equipped with factory--installed SmokeDetector(s), the smoke detector controller implements theunit shutdown through its NC contact set connected to theunit’s CTB input. The FSD function is initiated via thesmoke detector’s Alarm NO contact set. The RTU Opencontroller communicates the smoke detector’s trippedstatus to the BAS building control. See Fig. 51 (RTUOpen System Control wiring schematic).
The Fire Shutdown Switch configuration,MENUConfigInputsinput 5, identifies the normallyopen status of this input when there is no fire alarm.
Connecting Discrete Inputs —
Filter Status: The filter status accessory is afield--installed accessory. This accessory detects pluggedfilters. When installing this accessory, the unit must beconfigured for filter status by settingMENUConfigInputsinput 3, 5, 8, or 9 to FilterStatus and normally open (N/O) or normally closed (N/C).Input 8 or 9 is recommended for easy of installation. Referto Fig. 49 and Fig. 51 for wire terminations at J5.
Fan Status: The fan status accessory is a field--installedaccessory. This accessory detects when the indoor fan isblowing air. When installing this accessory, the unit must beconfigured for fan status by settingMENUConfigInputsinput 3, 5, 8, or 9 to Fan Statusand normally open (N/O) or normally closed (N/C). Input 8or 9 is recommended for easy of installation. Refer to Fig.49 and Fig. 51 for wire terminations at J5.
Remote Occupancy: The remote occupancy accessory isa field--installed accessory. This accessory overrides theunoccupied mode and puts the unit in occupied mode.When installing this accessory, the unit must beconfigured for remote occupancy by settingMENUConfigInputsinput 3, 5, 8, or 9 to RemoteOccupancy and normally open (N/O) or normally closed(N/C).
Also set MENUSchedulesoccupancy source to DIon/off. Input 8 or 9 is recommended for easy ofinstallation. Refer to Fig. 49 and Table 4 for wireterminations at J5.
Power Exhaust (output): The relay used by the RTUOpen board to control power exhaust is a dry contactwhich means it does not have 24vac. This 24vac must beconnected to the relay to allow it to operate the powerexhaust relay in the PE accessory. A 24vac source must beprovided to J11--2 on the RTU Open control board. Thiscan be provided by the unit’s transformer from varioussources. The “R” terminal on the unit’s low voltageterminal board (LVTB) is a logical source. Refer to Fig.49 and Fig. 51 for wire terminations at J11.
48HC
48LC
39
Communication Wiring -- Protocols
General —
Protocols are the communication languages spoken bycontrol devices. The main purpose of a protocol is tocommunicate information in the most efficient methodpossible. Different protocols exist to provide differentkinds of information for different applications. In the BASapplication, many different protocols are used, dependingon manufacturer. Protocols do not change the function ofa controller; just make the front end user different.
The RTU Open can be set to communicate on fourdifferent protocols: BACnet, Modbus, N2, and LonWorks.Switch 3 (SW3) on the board is used to set protocol andbaud rate. Switches 1 and 2 (SW1 and SW2) are used toset the board’s network address. See Fig. 65 and 66 forprotocol switch settings and address switches. The 3rdparty connection to the RTU Open is through plug J19.See Fig. 67 for wiring.
NOTE: Power must be cycled after changing the SW1--3switch settings.
Refer to the RTU Open v2 Integration Guide (Catalog No.11--808--434--01) for more detailed information on protocols,3rd party wiring, and networking.
SW3 Protocol Selection
PROTOCOL DS8 DS7 DS6 DS5 DS4 DS3 DS2 DS1BACnet MS/TP(Master) Unused OFF OFF OFF ON OFF Select Baud Select Baud
Modbus(Slave) Unused OFF OFF ON ON OFF Select Baud Select Baud
N2(Slave) Unused OFF OFF OFF ON ON OFF OFF
LonWorks Unused ON ON OFF ON OFF OFF ON
NOTE:DS = Dip SwitchBACnet MS/TP SW3 example shown
Baud Rate Selections
BAUD RATE DS2 DS19600 OFF OFF
19,200 ON OFF
38,400 OFF ON
76,800 ON ONC07166
Fig. 65 -- RTU Open SW3 Dip Switch Settings
C10815
Fig. 66 -- RTU Open Address Switches
C10816Fig. 67 -- Network Wiring
48HC
48LC
40
Local Access
BACview6 Handheld: The BACview6 is a keypad/displayinterface used to connect to the RTU Open to access thecontrol information, read sensor values, and test the RTU,see Fig. 68. This is an accessory interface that does notcome with the RTU Open controller and can only be usedat the unit. Connect the BACview6 to the RTU Open J12local access port. There are two password protected levelsin the display (User and Admin). The user password isdefaulted to 0000 but can be changed. The Adminpassword is 1111 and cannot be changed. There is a 10minute auto logout if a screen is idle. See Form48--50HCTQ--02T (or later), Appendix A for navigationand screen content.
Virtual BACview: Virtual BACview is a freeware computerprogram that functions as the BACview6 Handheld. TheUSB Link interface (USB--L) is required to connect a
computer to the RTU Open board. The link cable connectsa USB port to the J12 local access port. This programfunctions and operates identical to the handheld.
RTU Open Troubleshooting —
Communication LEDs The LEDs indicate if thecontroller is speaking to the devices on the network. TheLEDs should reflect communication traffic based on thebaud rate set. The higher the baud rate the more solid theLEDs will appear. See Table 5.
NOTE: Refer to Catalog No. 48--50HCTQ--02T (or later)for complete configuration of RTU Open, operatingsequences and troubleshooting information. Refer to RTUOpen v2 Integration Guide (Catalog No. 11--808--434--01)for details on configuration and troubleshooting ofconnected networks. Have a copy of these manualsavailable at unit start--up.
Cable
Access Port
J12
P1 P1
P5 P5
RTU Open
BACview6 Local Access Cable
Protocol Selector
C12749Fig. 68 -- BACview6 Handheld Connections
48HC
48LC
41
Table 5 – LEDs
The LEDs on the RTU Open show the status of certain functionsIf this LED is on... Status is...Power RTU Open has powerRx RTU Open is receiving data from the network segmentTx RTU Open is transmitting data over the network segmentDO# The digital output is active
The Run and Error LEDs indicate control module and network statusIf Run LED shows... And Error LED shows... Status is...2 flashes per second Off Normal2 flashes per second 2 flashes, alternating with Run LED Five minute auto---restart delay after system error2 flashes per second 3 flashes, then off Control module has just been formatted
2 flashes per second 4 flashes,then pause
Two or more devices on this network have thesame ARC156 network address
2 flashes per second On Exec halted after frequent system errors orcontrol programs halted
5 flashes per second On Exec start---up aborted, Boot is running5 flashes per second Off Firmware transfer in progress, Boot is running
7 flashes per second 7 flashes per second, alternating withRun LED Ten second recovery period after brownout
14 flashes per second 14 flashes per second,alternating with Run LED Brownout
On On
Failure. Try the following solutions:S Turn RTU Open off, then on.S Format RTU Open.S Download memory to RTU Open.S Replace RTU Open.
Outdoor Air Enthalpy Control(PNO 33CSENTHSW)
The enthalpy control (33CSENTHSW) is available as afield--installed accessory to be used with the EconoMi$er2damper system. The outdoor air enthalpy sensor is part ofthe enthalpy control. (The separate field--installed accessoryreturn air enthalpy sensor (33CSENTSEN) is required fordifferential enthalpy control. See Fig. 69.)
Locate the enthalpy control in the economizer next to theActuator Motor. Locate two GRA leads in the factoryharness and connect the gray lead labeled “ESL” to theterminal labeled “LOW”. See Fig. 69. Connect the enthalpycontrol power input terminals to economizer actuator powerleads RED (connect to 24V) and BLK (connect to GND).
The outdoor enthalpy changeover setpoint is set at theenthalpy controller.
7 CTB ECON(P’LINK: to J4-2) or(RTU Open: to J2-6)
LOW
GND
24V
EnthalpySwitch
GRA
BLK
RED
Factory Wiring Harness
PL6-1 (24-V)
PL6-4 (COM)
C11160
Fig. 69 -- Enthalpy Switch (33CSENTHSW) Connections
Differential Enthalpy Control —
Differential enthalpy control is provided by sensing andcomparing the outside air and return air enthalpyconditions. Install the outdoor air enthalpy control asdescribed above. Add and install a return air enthalpysensor.
Return Air Enthalpy Sensor —
Mount the return--air enthalpy sensor (33SENTSEN) inthe return--air section of the economizer. The return airsensor is wired to the enthalpy controller(33CSENTHSW). See Fig. 70.
GRA
BLK
RED– 4-20 Main
+ VDC Out
– 4-20 Main Out
+ 24-36 VDC In
LOW
GND
24V
7
PL6-1 (24-V)
PL6-4 (COM)
Outside AirEnthalpy Switch
Return AirEnthalpySensor
CTB ECON(P’LINK: to J4-2) or(RTU Open: to J2-6)
C11161
Fig. 70 -- Outside and Return Air Enthalpy SensorWiring
48HC
48LC
42
To wire the return air enthalpy sensor, perform thefollowing:
1. Use a 2--conductor, 18 or 20 AWG, twisted pair cableto connect the return air enthalpy sensor to theenthalpy controller.
2. Connect the field--supplied RED wire to (+) spadeconnector on the return air enthalpy sensor and the(+) terminal on the enthalpy controller. Connect theBLK wire to (--) spade connector on the return airenthalpy sensor and the (--) terminal on the enthalpycontroller.
Smoke Detectors
Smoke detectors are available as factory--installed options on48LC models. Smoke detectors may be specified for SupplyAir only or for Return Air without or with economizer or incombination of Supply Air and Return Air. All componentsnecessary for operation are factory--provided and mounted.The unit is factory--configured for immediate smoke detectorshutdown operation; additional wiring or modifications tounit terminal board may be necessary to complete the unitand smoke detector configuration to meet projectrequirements.
Units equipped with factory--optional Return Air smokedetectors require a relocation of the sensor module at unitinstallation. See Fig. 71 for the as shipped location.
Completing Installation of Return Air Smoke Sensor:
1. Unscrew the two screws holding the Return AirSmoke Detector assembly. See Fig. 72, Step 1. Savethe screws.
2. Turn the assembly 90 and then rotate end to end.Make sure that the elbow fitting is pointing down. SeeFig. 72, Step 2.
3. Screw the sensor and detector plate into its operatingposition using screws from Step 1. See Fig. 72, Step 3.
4. Connect the flexible tube on the sampling inlet to thesampling tube on the basepan.
Return Air Smoke Detector(as shipped)
C12282
Fig. 71 -- Return Air Smoke Detector, Shipping Position
Additional Application Data —
Refer to Catalog No. HKRNKA--1XA for discussions onadditional control features of these smoke detectorsincluding multiple unit coordination.
Step 1 Step 2 Step 3C12283
Fig. 72 -- Completing Installation of Return Air Smoke Sensor
48HC
48LC
43
Tabl
e6
–U
nit
Wir
e/F
use
orH
AC
RB
reak
erSi
zing
Dat
a
48LC
SIZE
NOM.V---Ph---Hz
IFM
TYPE
NOC.O.orUNPWRC.O.
w/PWRDC.O.
NOP.E.
w/P.E.(pwrdfr/unit)
NOP.E.
w/P.E.(pwrdfr/unit)
MCA
MAX
FUSE
orHACR
BRKR
DISC.SIZE
MCA
MAX
FUSE
orHACR
BRKR
DISC.SIZE
MCA
MAX
FUSE
orHACR
BRKR
DISC.SIZE
MCA
MAX
FUSE
orHACR
BRKR
DISC.SIZE
FLA
LRA
FLA
LRA
FLA
LRA
FLA
LRA
04
208/230---3---60
DD---STD
24.0
3024
8326.0
3026
8529.0
4030
8831.0
4032
90
MED
24/24
30/30
24/24
100
26/26
30/30
26/26
102
29/28
40/40
30/29
L05
31/30
40/40
32/32
107
HIGH
25/25
30/30
26/25
104
27/27
30/30
28/27
106
30/30
40/40
31/31
109
32/32
40/40
33/33
111
460---3---60
DD---STD
12.0
1512
4213.0
1513
4314.0
2014
4415.0
2016
45
MED
11.0
1512
5012.0
1513
5114.0
2014
5215.0
2015
53
HIGH
12.0
1513
5213.0
1514
5315.0
2015
5416.0
2016
55
575---3---60
DD---STD
10.0
1510
3012.0
1512
3211.0
1512
3213.0
1514
34
MED
9.0
159
3611.0
1512
3811.0
1511
3813.0
1514
40
HIGH
1015
1040
1215
1242
1215
1242
1415
1444
05
208/230---3---60
DD---STD
28.0
4029
9430.0
4031
9633.0
4534
9935.0
4536
101
MED
27/27
40/40
27/27
110
29/29
40/40
29/29
112
32/31
45/45
32/32
115
34/33
45/45
35/34
117
HIGH
30/29
40/40
30/29
140
32/31
45/40
32/31
142
34/34
45/45
36/35
145
36/36
50/45
38/37
147
460---3---60
DD---STD
13.0
2014
4614.0
2015
4716.0
2016
4817.0
2017
49
MED
12.0
1512
5313.0
1513
5415.0
2015
5516.0
2016
56
HIGH
13.0
1513
6914.0
2014
7015.0
2016
7116.0
2017
72
575---3---60
DD---STD
11.0
1512
3813.0
1514
4013.0
1513
4015.0
2016
42
MED
10.0
1510
4312.0
1512
4512.0
1512
4514.0
1514
47
HIGH
1215
1256
1415
1458
1315
1458
1520
1660
See“LegendandNotesforTables6and7”onpage47.
48HC
48LC
44
Tab
le6
–U
nit
Wir
e/F
use
orH
AC
RB
reak
erSi
zing
Dat
a(c
ont)
48LC
SIZE
NOM.V---Ph---Hz
IFM
TYPE
NOC.O.orUNPWRC.O.
w/PWRDC.O.
NOP.E.
w/P.E.(pwrdfr/unit)
NOP.E.
w/P.E.(pwrdfr/unit)
MCA
MAX
FUSE
orHACR
BRKR
DISC.SIZE
MCA
MAX
FUSE
orHACR
BRKR
DISC.SIZE
MCA
MAX
FUSE
orHACR
BRKR
DISC.SIZE
MCA
MAX
FUSE
orHACR
BRKR
DISC.SIZE
FLA
LRA
FLA
LRA
FLA
LRA
FLA
LRA
06
208/230---3---60
DD---STD
31.0
4531
121
33.0
4533
123
36.0
5037
126
38.0
5039
128
MED
31/31
45/45
31/30
141
33/33
45/45
33/33
143
36/35
50/50
36/36
146
38/37
50/50
39/38
148
HIGH
32/32
45/45
33/32
167
34/34
50/45
35/34
169
37/36
50/50
38/37
172
39/38
50/50
40/39
174
460---3---60
DD---STD
15.0
2015
5716.0
2016
5817.0
2017
5918.0
2519
60
MED
15.0
2015
6616.0
2016
6717.0
2017
6818.0
2518
69
HIGH
15.0
2015
8016.0
2016
8117.0
2017
8218.0
2518
83
575---3---60
DD---STD
12.0
1512
4414.0
2014
4614.0
2014
4616.0
2016
48
MED
12.0
1512
5313.0
1514
5513.0
1514
5515.0
2016
57
HIGH
1315
1362
1420
1564
1420
1564
1620
1766
See“LegendandNotesforTables6and7”onpage47.
48HC
48LC
45
Tabl
e7
–U
nit
Wir
e/F
acto
ryIn
stal
led
HA
CR
Bre
aker
Sizi
ngD
ata
48LC
SIZE
NOM.V---Ph---Hz
IFM
TYPE
NOC.O.orUNPWRC.O.
w/PWRDC.O.
NOP.E.
w/P.E.(pwrdfr/unit)
NOP.E.
w/P.E.(pwrdfr/unit)
MCA
HACR
BRKR
DISC.SIZE
MCA
HACR
BRKR
DISC.SIZE
MCA
HACR
BRKR
DISC.SIZE
MCA
HACR
BRKR
DISC.SIZE
FLA
LRA
FLA
LRA
FLA
LRA
FLA
LRA
04
208/230---3---60
DD---STD
24.0
3024
8326.0
3026
8529.0
4030
8831.0
4032
90
MED
24/24
30/30
24/24
100
26/26
30/30
26/26
102
29/29
40/40
30/29
105
31/31
40/40
32/32
107
HIGH
25/25
30/30
26/25
104
27/27
30/30
28/27
106
30/30
40/40
31/31
109
32/32
40/40
33/33
111
460---3---60
DD---STD
12.0
1512
4213.0
1513
4314.0
2014
4415.0
2016
45
MED
11.0
1512
5012
1513
5114.0
2014
5215
2015
53
HIGH
12.0
1513
5213
1514
5315.0
2015
5416
2016
55
575---3---60
DD---STD
10.0
1510
3012.0
1512
3211.0
1512
3213.0
1514
34
MED
9.0
159
3611
1512
3811.0
1511
3813
1514
40
HIGH
1015
1040
1215
1242
1215
1242
1415
1444
05
208/230---3---60
DD---STD
28.0
4029
9430.0
4031
9633.0
4534
9935.0
4536
101
MED
27/27
40/40
27/27
110
29/29
40/40
29/29
112
32/32
45/45
32/32
115
34/34
45/45
35/34
117
HIGH
30/30
40/40
30/29
140
32/32
45/45
32/31
142
34/34
45/45
36/35
145
36/36
50/50
38/37
147
460---3---60
DD---STD
13.0
2014
4614.0
2015
4716.0
2016
4817.0
2017
49
MED
12.0
1512
5313
1513
5415.0
2015
5516
2016
56
HIGH
13.0
1513
6914
2014
7015.0
2016
7116
2017
72
575---3---60
DD---STD
11.0
1512
3813.0
1514
4013.0
1513
4015.0
2016
42
MED
10.0
1510
4312
1512
4512.0
1512
4514
1514
47
HIGH
1215
1256
1415
1458
1315
1458
1520
1660
See“LegendandNotesforTables6and7”onpage47.
48HC
48LC
46
Tab
le7
–U
nit
Wir
e/F
acto
ryIn
stal
led
HA
CR
Bre
aker
Sizi
ngD
ata
(con
t)
48LC
SIZE
NOM.V---Ph---Hz
IFM
TYPE
NOC.O.orUNPWRC.O.
w/PWRDC.O.
NOP.E.
w/P.E.(pwrdfr/unit)
NOP.E.
w/P.E.(pwrdfr/unit)
MCA
HACR
BRKR
DISC.SIZE
MCA
HACR
BRKR
DISC.SIZE
MCA
HACR
BRKR
DISC.SIZE
MCA
HACR
BRKR
DISC.SIZE
FLA
LRA
FLA
LRA
FLA
LRA
FLA
LRA
06
208/230---3---60
DD---STD
31.0
4531
121
33.0
4533
123
36.0
5037
126
38.0
5039
128
MED
31/31
45/45
31/30
141
33/33
45/45
33/33
143
36/36
50/50
36/36
146
38/38
50/50
39/38
148
HIGH
32/32
45/45
33/32
167
34/34
50/50
35/34
169
37/37
50/50
38/37
172
39/39
50/50
40/39
174
460---3---60
DD---STD
15.0
2015
5716.0
2016
5817.0
2017
5918.0
2519
60
MED
15.0
2015
6616
2016
6717.0
2017
6818
2518
69
HIGH
15.0
2015
8016
2016
8117.0
2017
8218
2518
83
575---3---60
DD---STD
12.0
1512
4414.0
2014
4614.0
2014
4616.0
2016
48
MED
12.0
1512
5313
1514
5513.0
1514
5515
2016
57
HIGH
1315
1362
1420
1564
1420
1564
1620
1766
See“LegendandNotesforTables6and7”onpage47.
48HC
48LC
4747
Legend and Notes for Tables 6 and 7LEGEND:BD --- Belt drive
indoor fan motorBRKR --- Circuit breakerCO --- Convenient outletDD --- Direct drive
indoor fan motorDISC --- DisconnectFLA --- Full load ampsIFM --- Indoor fan motorLRA --- Locked rotor ampsMCA --- Minimum circuit ampsMOCP --- MAX FUSE or HACR BreakerPE --- Power exhaustPWRD CO --- Powered convenient outletUNPWR CO --- Unpowered convenient outletNOTES:1. In compliance with NEC requirements for multimotor andcombination load equipment (refer to NEC Articles 430 and440), the overcurrent protective device for the unit shall befuse or HACR breaker. Canadian units may be fuse or circuitbreaker.
2. Unbalanced 3-Phase Supply VoltageNever operate a motor where a phase imbalance in supplyvoltage is greater than 2%. Use the following formula to de-termine the percentage of voltage imbalance.
% Voltage Imbalance = 100 xmax voltage deviation from average voltage
average voltage
Example: Supply voltage is 230-3-60
AB = 224 vBC = 231 vAC = 226 v
Average Voltage =(224 + 231 + 226)
=681
3 3
= 227
Determine maximum deviation from average voltage.(AB) 227 – 224 = 3 v(BC) 231 – 227 = 4 v(AC) 227 – 226 = 1 vMaximum deviation is 4 v.Determine percent of voltage imbalance.
% Voltage Imbalance = 100 x4
227
= 1.76%
This amount of phase imbalance is satisfactory as it is below themaximum allowable 2%.IMPORTANT: If the supply voltage phase imbalance is more than2%, contact your local electric utility company immediately.
Step 14 — Adjust Factory--Installed Options
Smoke Detectors —
Smoke detector(s) will be connected at the CentralTerminal Board (CTB), at terminals marked “SmokeShutdown”. Remove jumper JMP 3 when ready toenergize unit.
Step 15 — Install Accessories
Available accessories include:
CurbThru--base connection kit (must be installed before unitis set on curb)EconoMi$er X (with control)EconoMi$er2 (without control/for external signal)Power ExhaustDifferential dry--bulb sensor (EconoMi$er2)Outdoor enthalpy sensorDifferential enthalpy sensorCO2 sensorLouvered hail guardPhase monitor control
Refer to separate installation instructions for informationon installing these accessories.
Pre--Start and Start--Up —
This completes the mechanical installation of the unit.Refer to the unit’s Service Manual for detailed Pre--Startand Start--Up instructions. Download the latest versionsfrom HVAC Partners (www.hvacpartners.com).
48LC
48
APPENDIX —VFD Operation with Remote Keypad
All 48LC size 04--06 units are equipped with a VFD(Variable Frequency Drive) to automatically adjust theindoor fan motor speed in sequence with the unit’sventilation, cooling and heating operation. The VFD keypadis included as standard on electro mechanical and RTU Openmodels. See Fig. 74 for location of the VFD and the VFDkeypad in these units.
NOTE: ComfortLink models do not include the VFDkeypad as VFD control operation is accessed through theComfortLink controls.
The VFD keypad is shown in Fig. 73. The function of SOFTKEYS 1 and 2 change depending on what is displayed onthe screen. The function of SOFT KEY 1 matches the wordin the lower left--hand box on the display screen. Thefunction of SOFT KEY 2 matches the word in the lowerright--hand box on the display screen. If the box is empty,then the SOFT KEY does not have a function on thatspecific screen. The UP and DOWN keys are used tonavigate through the menus. The OFF key is used to turn offthe VFD. The AUTO key is used to change control of thedrive to automatic control. The HAND key is used to changecontrol of the drive to local (hand held) control. The HELPbutton is used to access the help screens.
For the VFD to operate on the units covered by thisdocument, the drive must be set in AUTO mode. The word“AUTO” will appear in the upper left hand corner of theVFD display. Press the AUTO button to set the drive inAUTO mode.
C08675
Fig. 73 -- VFD Keypad
Use the RJ--45 (CAT5) cable (bundled with the ControlHarness -- see Fig. 74) to provide easier access for using theVFD Remote Keypad. The cable’s length is long enough toroute it through to the unit’s control box, if desired.
To Connect the VFD Keypad using the RJ--45 Cable —
1. Remove the Keypad from the front of the VFD.2. Remove the RJ--45 adapter from the back of the Re-
mote Keypad and insert the adapter into the RJ--45port on the front of the VFD.
3. Separate the RJ--45 (CAT5) cable from the ControlHarness.
4. Use the CAT5 cable to connect the Remote Keypad tothe VFD.
RJ-45 (CAT5) Cable(Bundled with Control Harness)
ABB VFDw/ Remote Keypad
C13394
Fig. 74 -- Location of VFD in 48LC 04--06 Units
48LC
49
Start Up with Assistant
Initial start--up has been performed at the factory. Use of thestart up assistant will override factory VFD configurations.DO NOT USE THE START--UP ASSISTANT ON THESELC UNITS!
Start Up by Changing Parameters Individually
Initial start--up is performed at the factory. To start up theVFD by changing individual parameters, perform thefollowing procedure:
1. Select MENU (SOFT KEY 2). The Main menu willbe displayed.
2. Use the UP or DOWN keys to highlight PARAMET-ERS on the display screen and press ENTER (SOFTKEY 2).
3. Use the UP or DOWN keys to highlight the desiredparameter group and press SEL (SOFT KEY 2).
4. Use the UP or DOWN keys to highlight the desiredparameter and press EDIT (SOFT KEY 2).
5. Use the UP or DOWN keys to change the value of theparameter.
6. Press SAVE (SOFT KEY 2) to store the modifiedvalue. Press CANCEL (SOFT KEY 1) to keep theprevious value. Any modifications that are not savedwill not be changed.
7. Choose another parameter or press EXIT (SOFT KEY1) to return to the listing of parameter groups. Contin-ue until all the parameters have been configured andthen press EXIT (SOFT KEY 1) to return to the mainmenu.
NOTE: The current parameter value appears above thehighlight parameter. To view the default parameter value,press the UP and DOWN keys simultaneously. To restorethe default factory settings, select the application macro“HVAC Default.”
VFD Modes
The VFD has several different modes for configuring,operating, and diagnosing the VFD. The modes are:
S Standard Display mode shows drive statusinformation and operates the drive
S Parameters mode edits parameter values individually
S Start--up Assistant mode guides the start up andconfiguration. DO NOT USE THE START--UP
ASSISTANT ON THESE LC UNITS!
S Changed Parameters mode shows all changedparameters
S Drive Parameter Backup mode stores or uploads theparameters
S Clock Set mode sets the time and date for the drive
S I/O Settings mode checks and edits the I/O settings
Standard Display Mode
Use the standard display mode to read information on thedrive status and operate the drive. To reach the standarddisplay mode, press EXIT until the LCD display showsstatus information as described below. (See Fig. 75.)
The top line of the LCD display shows the basic statusinformation of the drive. The HAND icon indicates thatthe drive control is local from the control panel. TheAUTO icon indicates that the drive is in remote controlmode, such as the basic I/O (X1) or field bus.
The arrow icon indicates the drive and motor rotationstatus. A rotating arrow (clockwise or counterclockwise)indicates that the drive is running and at set point and theshaft direction is forward or reverse. A rotating blinkingarrow indicates that the drive is running but not at setpoint. A stationary arrow indicates that the drive isstopped. For the units covered in this manual, the correctdisplay rotation is clockwise.
The upper right corner shows the frequency set point thatthe drive will maintain.
Using parameter group 34, the middle of the LCD displaycan be configured to display 3 parameter values. Thedefault display shows parameters 0103 (OUTPUT FREQ)in percent speed, 0104 (CURRENT) in amperes, and 0120(Al1) in voltage DC.
The bottom corners of the LCD display show thefunctions currently assigned to the two soft keys. Thelower middle displays the current time (if configured toshow the time).
The first time the drive is powered up, it is in the OFFmode. To switch to local hand--held control and controlthe drive using the control panel, press and hold theHAND button. Pressing the HAND button switches thedrive to hand control while keeping the drive running.Press the AUTO button to switch to remote input control.To start the drive press the HAND or AUTO buttons, tostop the drive press the OFF button.
60.0Hz100.0 %SP
1.9 A10.0 Vdc
C09249
Fig. 75 -- Standard Display Example
To adjust the speed in HAND mode, press the UP orDOWN buttons (the reference changes immediately). Thereference can be modified in the local control (HAND)mode, and can be parameterized (using Group 11reference select) to also allow modification in the remotecontrol mode.
48LC
50
Parameters Mode
The Parameters mode is used to change the parameters onthe drive. To change parameters, perform the followingprocedure. See Table 8 for a listing of the VFD parametersper motor and VFD drive models:
1. Select MENU (SOFT KEY 2). The Main menu willbe displayed.
2. Use the UP or DOWN keys to highlight PARAMET-ERS on the display screen and press ENTER (SOFTKEY 2).
3. Use the UP or DOWN keys to highlight the desiredparameter group and press SEL (SOFT KEY 2).
4. Use the UP or DOWN keys to highlight the desiredparameter and press EDIT (SOFT KEY 2).
5. Use the UP or DOWN keys to change the value of theparameter.
6. Press SAVE (SOFT KEY 2) to store the modifiedvalue. Press CANCEL (SOFT KEY 1) to keep theprevious value. Any modifications that are not savedwill not be changed.
7. Choose another parameter or press EXIT (SOFT KEY1) to return to the listing of parameter groups. Contin-ue until all the parameters have been configured andthen press EXIT (SOFT KEY 1) to return to the mainmenu.
NOTE: The current parameter value appears above thehighlight parameter. To view the default parameter value,press the UP and DOWN keys simultaneously. To restore thedefault factory settings, select the Carrier application macro.
Changed Parameters Mode
The Changed Parameters mode is used to view and editrecently changed parameters on the drive. To view thechanged parameters, perform the following procedure:
1. Select MENU (SOFT KEY 2). The Main menu willbe displayed.
2. Use the UP or DOWN keys to highlight CHANGEDPAR on the display screen and press ENTER (SOFTKEY 2). A list of the recently changed parameterswill be displayed.
3. Use the UP or DOWN keys to highlight the desiredparameter group and press EDIT (SOFT KEY 2) tochange the parameter if desired.
4. Press EXIT (SOFT KEY 1) to exit the Changed Para-meters mode.
Drive Parameter Backup Mode
The drive parameter back up mode is used to export theparameters from one drive to another. The parameters canbe uploaded from a VFD to the removable control panel.The control panel can then be transferred to another driveand the parameters downloaded into memory.
Depending on the motor and application, there are twooptions available. The first option is to download allparameters. This copies both application and motorparameters to the drive from the control panel. This isrecommended when using the same application for drivesof the same size. This can also be used to create a backupof the parameters group for the drive.
The second option downloads only the applicationparameters to the drive. This is recommended when usingthe same application for drives of different sizes.
Upload All Parameters —
To upload and store parameters in the control panel fromthe VFD, perform the following procedure:
1. Select MENU (SOFT KEY 2). The Main menu willbe displayed.
2. Use the UP or DOWN keys to highlight PARBACKUP on the display screen and press ENTER(SOFT KEY 2).
3. Use the UP or DOWN keys to highlight UPLOAD TOPANEL and press SEL (SOFT KEY 2).
4. The text “Copying Parameters” will be displayed witha progress indicator. To stop the process, selectABORT (SOFT KEY 1).
5. When the upload is complete, the text “Parameter up-load successful” will be displayed.
6. The display will then return to the PAR BACKUPmenu. Select EXIT (SOFT KEY 1) to return to themain menu.
7. The control panel can now be disconnected from thedrive.
Download All Parameters —
To download all parameters from the control panel to theVFD, perform the following procedure:
1. Install the control panel with the correct parametersonto the VFD.
2. Select MENU (SOFT KEY 2). The Main menu willbe displayed.
3. Use the UP or DOWN keys to highlight PARBACKUP on the display screen and press ENTER(SOFT KEY 2).
4. Use the UP or DOWN keys to highlight DOWNLOADTO DRIVE ALL and press SEL (SOFT KEY 2).
5. The text “Restoring Parameters” will be displayedwith a progress indicator. To stop the process, selectABORT (SOFT KEY 1).
6. When the download is complete, the text “Parameterdownload successful” will be displayed.
7. The display will then return to the PAR BACKUPmenu. Select EXIT (SOFT KEY 1) to return to themain menu.
8. The control panel can now be disconnected from thedrive.
48LC
51
Download Application Parameters —
To download application parameters only to the controlpanel from the VFD, perform the following procedure:
1. Install the control panel with the correct parametersonto the VFD.
2. Select MENU (SOFT KEY 2). The Main menu willbe displayed.
3. Use the UP or DOWN keys to highlight PARBACKUP on the display screen and press ENTER(SOFT KEY 2).
4. Use the UP or DOWN keys to highlight DOWNLOADAPPLICATION and press SEL (SOFT KEY 2).
5. The text “Downloading Parameters (partial)” will bedisplayed with a progress indicator. To stop the pro-cess, select ABORT (SOFT KEY 1).
6. When the download is complete, the text “Parameterdownload successful” will be displayed.
7. The display will then return to the PAR BACKUPmenu. Select EXIT (SOFT KEY 1) to return to themain menu.
8. The control panel can now be disconnected from thedrive.
Clock Set Mode
The clock set mode is used for setting the date and timefor the internal clock of the VFD. In order to use the timerfunctions of the VFD control, the internal clock must beset. The date is used to determine weekdays and is visiblein the fault logs.
To set the clock, perform the following procedure:
1. Select MENU (SOFT KEY 2). The Main menu willbe displayed.
2. Use the UP or DOWN keys to highlight CLOCK SETon the display screen and press ENTER (SOFT KEY2). The clock set parameter list will be displayed.
3. Use the UP or DOWN keys to highlight CLOCK VIS-IBILITY and press SEL (SOFT KEY 2). This para-meter is used to display or hide the clock on thescreen. Use the UP or DOWN keys to change theparameter setting. Press OK (SOFT KEY 2) to savethe configuration and return to the Clock Set menu.
4. Use the UP or DOWN keys to highlight SET TIMEand press SEL (SOFT KEY 2). Use the UP or DOWNkeys to change the hours and minutes. Press OK(SOFT KEY 2) to save the configuration and return tothe Clock Set menu.
5. Use the UP or DOWN keys to highlight TIMEFORMAT and press SEL (SOFT KEY 2). Use the UPor DOWN keys to change the parameter setting. PressOK (SOFT KEY 2) to save the configuration and re-turn to the Clock Set menu.
6. Use the UP or DOWN keys to highlight SET DATEand press SEL (SOFT KEY 2). Use the UP or DOWNkeys to change the day, month, and year. Press OK(SOFT KEY 2) to save the configuration and return tothe Clock Set menu.
7. Use the UP or DOWN keys to highlight DATEFORMAT and press SEL (SOFT KEY 2). Use the UPor DOWN keys to change the parameter setting. PressOK (SOFT KEY 2) to save the configuration and re-turn to the Clock Set menu.
8. Press EXIT (SOFT KEY 1) twice to return to themain menu.
I/O Settings Mode
The I/O Settings mode is used for viewing and editing theI/O settings.
To configure the I/O settings, perform the followingprocedure:
1. Select MENU (SOFT KEY 2). The Main menu willbe displayed.
2. Use the UP or DOWN keys to highlight I/O SET-TINGS on the display screen and press ENTER(SOFT KEY 2). The I/O Settings parameter list willbe displayed.
3. Use the UP or DOWN keys to highlight the desiredI/O setting and press SEL (SOFT KEY 2).
4. Use the UP or DOWN keys to select the parameter toview. Press OK (SOFT KEY 2).
5. Use the UP or DOWN keys to change the parametersetting. Press SAVE (SOFT KEY 2) to save the con-figuration. Press CANCEL (SOFT KEY 1) to keepthe previous value. Any modifications that are notsaved will not be changed.
6. Press EXIT (SOFT KEY 1) twice to return to themain menu.
48LC
52
Table 8 – 48LC 04--06 VFD Parameters
Unit Size 48LC 04
ParameterGroup
ParameterNumber
Motor Description 1.7 HP 575V 1.7 HP 208---230V 1.7 HP 460V 2.4 HP 575V 2.4 HP 208---230V
Drive/Motor Voltage 575V 208---230V 460V 575V 208---230V
Motor Part Number HD56FR579 HD56FR233 HD56FR463 HD56FE577 HD56FE653
VFD Part Number HK30WA048 HK30WA045 HK30WA046 HK30WA048 HK30WA001
ABB Part Number ACH550---CARUH---03A9---6
ACH550---CARUH---07A5---2
ACH550---CARUH---04A1---4
ACH550---CARUH---03A9---6
ACH550---CARUH---012A---2
Start---Up Data
9902 Application Macro (1) HVAC DEFAULT (1) HVAC DEFAULT (1) HVAC DEFAULT (1) HVAC DEFAULT (1) HVAC DEFAULT
9905 MotorNominal Voltage 575 230 460 575 230
9906 MotorNominal Current 3.1 5.8 2.9 3.4 7.9
9907 MotorNominal Frequency 60 60 60 60 60
9908 MotorNominal Speed 1725 1725 1725 1725 1725
9909 MotorNominal Power 1.7 1.7 1.7 2.4 2.4
Start/Stop/Dir1001 EXT1 Commands (1) DI1 (1) DI1 (1) DI1 (1) DI1 (1) DI1
1003 Direction (1) Forward (1) Forward (1) Forward (1) Forward (1) Forward
ReferenceSelect
1103 REF1 Select (1) AI1 (1) AI1 (1) AI1 (1) AI1 (1) AI1
1104 REF1 Minimum 0 Hz 0 Hz 0 Hz 0 Hz 0 Hz
1105 REF1 Maximum 60 Hz 60 Hz 60 Hz 60 Hz 60 Hz
ConstantSpeeds
1201 Constant SpeedSelect (8) DI2,3 (8) DI2,3 (8) DI2,3 (8) DI2,3 (8) DI2,3
1202 Constant Speed 1 52.4 52.4 52.4 52.4 52.4
1203 Constant Speed 2 60Hz 60Hz 60Hz 60Hz 60Hz
1204 Constant Speed 3 60Hz 60Hz 60Hz 60Hz 60Hz
Analog Inputs1301 Minimum AI---1 20.00% 20.00% 20.00% 20.00% 20.00%
1302 Maximum AI---1 100.00% 100.00% 100.00% 100.00% 100.00%
Relay Outputs
1401 Relay Output 1 (1) Ready (1) Ready (1) Ready (1) Ready (1) Ready
1402 Relay Output 2 (2) Run (2) Run (2) Run (2) Run (2) Run
1403 Relay Output 3 (16) FLT/ALARM (16) FLT/ALARM (16) FLT/ALARM (16) FLT/ALARM (16) FLT/ALARM
SystemControl
1604 Fault Reset Sel (0) Keypad (0) Keypad (0) Keypad (0) Keypad (0) Keypad
1608 Start Enable 1 (4) DI4 (4) DI4 (4) DI4 (4) DI4 (4) DI4
Override 1701 Override Sel (0) NOT SEL (0) NOT SEL (0) NOT SEL (0) NOT SEL (0) NOT SEL
Limits
2003 Maximum Current 3.6 6.7 3.3 3.9 9.1
2007 Minimum Frequency 0.0 Hz 0.0 Hz 0.0 Hz 0.0 Hz 0.0 Hz
2008 Maximum Frequency 60Hz 60Hz 60Hz 60Hz 60Hz
Start/Stop
2101 Start Function (1) AUTO (1) AUTO (1) AUTO (1) AUTO (1) AUTO
2102 Stop Function (1) Coast (1) Coast (1) Coast (1) Coast (1) Coast
2109 EM STOP Sel (0) NOT SEL (0) NOT SEL (0) NOT SEL (0) NOT SEL (0) NOT SEL
Accel/Decel
2201 Acc/Dec 1/2 Sel (0) NOT SEL (0) NOT SEL (0) NOT SEL (0) NOT SEL (0) NOT SEL
2202 Accelerate Time 30.0s 30.0s 30.0s 30.0s 30.0s
2203 Decelerate Time 10.0s 10.0s 10.0s 10.0s 10.0s
Motor2606 Switching Frequency 4 KHz 4 KHz 4 KHz 4 KHz 4 KHz
2607 Switching FrequencyControl (1) ON (1) ON (1) ON (1) ON (1) ON
FaultFunctions
3005 Motor Therm Prot (1) Fault (1) Fault (1) Fault (1) Fault (1) Fault
3006 Motor Thermal Time 1050s 1050s 1050s 1050s 1050s
3007 Motor Load Curve 100% 100% 100% 100% 100%
3008 Zero Speed Load %00705 %00705 %00705 %00705 %00705
3009 Break PointFrequency 35 Hz 35 Hz 35 Hz 35 Hz 35 Hz
AutomaticReset
3104 AR Overcurrent (0) DISABLE (0) DISABLE (0) DISABLE (0) DISABLE (0) DISABLE
3105 AR Overvoltage (1) ENABLE (1) ENABLE (1) ENABLE (1) ENABLE (1) ENABLE
3106 AR Undervoltage (1) ENABLE (1) ENABLE (1) ENABLE (1) ENABLE (1) ENABLE
EFB Protocol
5301 EFB PROTOCOL ID 0601 (hex) 0601 (hex) 0601 (hex) 0601 (hex) 0601 (hex)
5302 EFB STATION ID 41 41 41 41 41
5303 EFB BAUD RATE 38400 38400 38400 38400 38400
5304 EFB PARITY 8 NONE 1 8 NONE 1 8 NONE 1 8 NONE 1 8 NONE 1
5305 EFB CTRL PROFILE DCU PROFILE DCU PROFILE DCU PROFILE DCU PROFILE DCU PROFILE
Options 9802 COMM PROT SEL 6 (LEN) 6 (LEN) 6 (LEN) 6 (LEN) 6 (LEN)
48LC
53
Table 8 -- 48LC 04--06 VFD Parameters (cont.)
Unit Size 48LC 04 48LC 05 48LC 06
ParameterGroup
ParameterNumber
Motor Description 2.4 HP 460V 1.7 HP 575V 1.7 HP 208---230V 1.7 HP 460V 2.4 HP 575V
Drive/Motor Voltage 460V 575V 208---230V 460V 575V
Motor Part Number HD56FE653 HD56FR579 HD56FR233 HD56FR463 HD56FE577
VFD Part Number HK30WA008 HK30WA048 HK30WA045 HK30WA046 HK30WA048
ABB Part Number ACH550---CARUH---06A9---4
ACH550---CARUH---03A9---6
ACH550---CARUH---07A5---2
ACH550---CARUH---04A1---4
ACH550---CARUH---03A9---6
Start---Up Data
9902 Application Macro (1) HVAC DEFAULT (1) HVAC DEFAULT (1) HVAC DEFAULT (1) HVAC DEFAULT (1) HVAC DEFAULT
9905 MotorNominal Voltage 460 575 230 460 575
9906 MotorNominal Current 4.0 3.1 5.8 2.9 3.4
9907 MotorNominal Frequency 60 60 60 60 60
9908 MotorNominal Speed 1725 1725 1725 1725 1725
9909 MotorNominal Power 2.4 1.7 1.7 1.7 2.4
Start/Stop/Dir1001 EXT1 Commands (1) DI1 (1) DI1 (1) DI1 (1) DI1 (1) DI1
1003 Direction (1) Forward (1) Forward (1) Forward (1) Forward (1) Forward
ReferenceSelect
1103 REF1 Select (1) AI1 (1) AI1 (1) AI1 (1) AI1 (1) AI1
1104 REF1 Minimum 0 Hz 0 Hz 0 Hz 0 Hz 0 Hz
1105 REF1 Maximum 60 Hz 60 Hz 60 Hz 60 Hz 60 Hz
ConstantSpeeds
1201 Constant SpeedSelect (8) DI2,3 (8) DI2,3 (8) DI2,3 (8) DI2,3 (8) DI2,3
1202 Constant Speed 1 52.4 42.6 42.6 42.6 42.6
1203 Constant Speed 2 60Hz 60Hz 60Hz 60Hz 60Hz
1204 Constant Speed 3 60Hz 60Hz 60Hz 60Hz 60Hz
Analog Inputs1301 Minimum AI---1 20.00% 20.00% 20.00% 20.00% 20.00%
1302 Maximum AI---1 100.00% 100.00% 100.00% 100.00% 100.00%
Relay Outputs
1401 Relay Output 1 (1) Ready (1) Ready (1) Ready (1) Ready (1) Ready
1402 Relay Output 2 (2) Run (2) Run (2) Run (2) Run (2) Run
1403 Relay Output 3 (16) FLT/ALARM (16) FLT/ALARM (16) FLT/ALARM (16) FLT/ALARM (16) FLT/ALARM
SystemControl
1604 Fault Reset Sel (0) Keypad (0) Keypad (0) Keypad (0) Keypad (0) Keypad
1608 Start Enable 1 (4) DI4 (4) DI4 (4) DI4 (4) DI4 (4) DI4
Override 1701 Override Sel (0) NOT SEL (0) NOT SEL (0) NOT SEL (0) NOT SEL (0) NOT SEL
Limits
2003 Maximum Current 4.6 3.6 6.7 3.3 3.9
2007 Minimum Frequency 0.0 Hz 0.0 Hz 0.0 Hz 0.0 Hz 0.0 Hz
2008 Maximum Frequency 60Hz 60Hz 60Hz 60Hz 60Hz
Start/Stop
2101 Start Function (1) AUTO (1) AUTO (1) AUTO (1) AUTO (1) AUTO
2102 Stop Function (1) Coast (1) Coast (1) Coast (1) Coast (1) Coast
2109 EM STOP Sel (0) NOT SEL (0) NOT SEL (0) NOT SEL (0) NOT SEL (0) NOT SEL
Accel/Decel
2201 Acc/Dec 1/2 Sel (0) NOT SEL (0) NOT SEL (0) NOT SEL (0) NOT SEL (0) NOT SEL
2202 Accelerate Time 30.0s 30.0s 30.0s 30.0s 30.0s
2203 Decelerate Time 10.0s 10.0s 10.0s 10.0s 10.0s
Motor2606 Switching Frequency 4 KHz 4 KHz 4 KHz 4 KHz 4 KHz
2607 Switching FrequencyControl (1) ON (1) ON (1) ON (1) ON (1) ON
FaultFunctions
3005 Motor Therm Prot (1) Fault (1) Fault (1) Fault (1) Fault (1) Fault
3006 Motor Thermal Time 1050s 1050s 1050s 1050s 1050s
3007 Motor Load Curve 100% 100% 100% 100% 100%
3008 Zero Speed Load %00705 %00705 %00705 %00705 %00705
3009 Break PointFrequency 35 Hz 35 Hz 35 Hz 35 Hz 35 Hz
AutomaticReset
3104 AR Overcurrent (0) DISABLE (0) DISABLE (0) DISABLE (0) DISABLE (0) DISABLE
3105 AR Overvoltage (1) ENABLE (1) ENABLE (1) ENABLE (1) ENABLE (1) ENABLE
3106 AR Undervoltage (1) ENABLE (1) ENABLE (1) ENABLE (1) ENABLE (1) ENABLE
EFB Protocol
5301 EFB PROTOCOL ID 0601 (hex) 0601 (hex) 0601 (hex) 0601 (hex) 0601 (hex)
5302 EFB STATION ID 41 41 41 41 41
5303 EFB BAUD RATE 38400 38400 38400 38400 38400
5304 EFB PARITY 8 NONE 1 8 NONE 1 8 NONE 1 8 NONE 1 8 NONE 1
5305 EFB CTRL PROFILE DCU PROFILE DCU PROFILE DCU PROFILE DCU PROFILE DCU PROFILE
Options 9802 COMM PROT SEL 6 (LEN) 6 (LEN) 6 (LEN) 6 (LEN) 6 (LEN)
48LC
54
Table 8 -- 48LC 04--06 VFD Parameters (cont.)
Unit Size 48LC 06 48LC 05/06
ParameterGroup
ParameterNumber
Motor Description 2.4 HP 208---230V 2.4 HP 460V 2.9 HP 208---230V 2.9 HP 460V 3.7 HP 575V
Drive/Motor Voltage 208---230V 460V 208---230V 460V 575V
Motor Part Number HD56FE653 HD56FE653 HD58FE654 HD58FE654 HD58FE577
VFD Part Number HK30WA001 HK30WA008 HK30WA001 HK30WA008 HK30WA021
ABB Part Number ACH550---CARUH---012A---2
ACH550---CARUH---06A9---4
ACH550---CARUH---012A---2
ACH550---CARUH---06A9---4
ACH550---CARUH---06A1---6
Start---Up Data
9902 Application Macro (1) HVAC DEFAULT (1) HVAC DEFAULT (1) HVAC DEFAULT (1) HVAC DEFAULT (1) HVAC DEFAULT
9905 MotorNominal Voltage 230 460 230 460 575
9906 MotorNominal Current 7.9 4.0 9.2 4.6 4.2
9907 MotorNominal Frequency 60 60 60 60 60
9908 MotorNominal Speed 1725 1725 1725 1725 1725
9909 MotorNominal Power 2.4 2.4 2.9 2.9 3.7
Start/Stop/Dir1001 EXT1 Commands (1) DI1 (1) DI1 (1) DI1 (1) DI1 (1) DI1
1003 Direction (1) Forward (1) Forward (1) Forward (1) Forward (1) Forward
ReferenceSelect
1103 REF1 Select (1) AI1 (1) AI1 (1) AI1 (1) AI1 (1) AI1
1104 REF1 Minimum 0 Hz 0 Hz 0 Hz 0 Hz 0 Hz
1105 REF1 Maximum 60 Hz 60 Hz 60 Hz 60 Hz 60 Hz
ConstantSpeeds
1201 Constant SpeedSelect (8) DI2,3 (8) DI2,3 (8) DI2,3 (8) DI2,3 (8) DI2,3
1202 Constant Speed 1 42.6 42.6 41.2 41.2 41.2
1203 Constant Speed 2 60Hz 60Hz 60Hz 60Hz 60Hz
1204 Constant Speed 3 60Hz 60Hz 60Hz 60Hz 60Hz
Analog Inputs1301 Minimum AI---1 20.00% 20.00% 20.00% 20.00% 20.00%
1302 Maximum AI---1 100.00% 100.00% 100.00% 100.00% 100.00%
Relay Outputs
1401 Relay Output 1 (1) Ready (1) Ready (1) Ready (1) Ready (1) Ready
1402 Relay Output 2 (2) Run (2) Run (2) Run (2) Run (2) Run
1403 Relay Output 3 (16) FLT/ALARM (16) FLT/ALARM (16) FLT/ALARM (16) FLT/ALARM (16) FLT/ALARM
SystemControl
1604 Fault Reset Sel (0) Keypad (0) Keypad (0) Keypad (0) Keypad (0) Keypad
1608 Start Enable 1 (4) DI4 (4) DI4 (4) DI4 (4) DI4 (4) DI4
Override 1701 Override Sel (0) NOT SEL (0) NOT SEL (0) NOT SEL (0) NOT SEL (0) NOT SEL
Limits
2003 Maximum Current 9.1 4.6 10.6 5.3 4.8
2007 Minimum Frequency 0.0 Hz 0.0 Hz 0.0 Hz 0.0 Hz 0.0 Hz
2008 Maximum Frequency 60Hz 60Hz 60Hz 60Hz 60Hz
Start/Stop
2101 Start Function (1) AUTO (1) AUTO (1) AUTO (1) AUTO (1) AUTO
2102 Stop Function (1) Coast (1) Coast (1) Coast (1) Coast (1) Coast
2109 EM STOP Sel (0) NOT SEL (0) NOT SEL (0) NOT SEL (0) NOT SEL (0) NOT SEL
Accel/Decel
2201 Acc/Dec 1/2 Sel (0) NOT SEL (0) NOT SEL (0) NOT SEL (0) NOT SEL (0) NOT SEL
2202 Accelerate Time 30.0s 30.0s 30.0s 30.0s 30.0s
2203 Decelerate Time 10.0s 10.0s 10.0s 10.0s 10.0s
Motor2606 Switching Frequency 4 KHz 4 KHz 4 KHz 4 KHz 4 KHz
2607 Switching FrequencyControl (1) ON (1) ON (1) ON (1) ON (1) ON
FaultFunctions
3005 Motor Therm Prot (1) Fault (1) Fault (1) Fault (1) Fault (1) Fault
3006 Motor Thermal Time 1050s 1050s 1050s 1050s 1050s
3007 Motor Load Curve 100% 100% 100% 100% 100%
3008 Zero Speed Load %00705 %00705 %00705 %00705 %00705
3009 Break PointFrequency 35 Hz 35 Hz 35 Hz 35 Hz 35 Hz
AutomaticReset
3104 AR Overcurrent (0) DISABLE (0) DISABLE (0) DISABLE (0) DISABLE (0) DISABLE
3105 AR Overvoltage (1) ENABLE (1) ENABLE (1) ENABLE (1) ENABLE (1) ENABLE
3106 AR Undervoltage (1) ENABLE (1) ENABLE (1) ENABLE (1) ENABLE (1) ENABLE
EFB Protocol
5301 EFB PROTOCOL ID 0601 (hex) 0601 (hex) 0601 (hex) 0601 (hex) 0601 (hex)
5302 EFB STATION ID 41 41 41 41 41
5303 EFB BAUD RATE 38400 38400 38400 38400 38400
5304 EFB PARITY 8 NONE 1 8 NONE 1 8 NONE 1 8 NONE 1 8 NONE 1
5305 EFB CTRL PROFILE DCU PROFILE DCU PROFILE DCU PROFILE DCU PROFILE DCU PROFILE
Options 9802 COMM PROT SEL 6 (LEN) 6 (LEN) 6 (LEN) 6 (LEN) 6 (LEN)
48LC
55
VFD Diagnostics
The drive detects error situations and reports them using:
1. Green and red LEDs on the body of the drive (locatedunder the keypad)
2. Status LED on the control panel3. Control panel display4. The Fault Word and Alarm Word parameter bits
(parameters 0305 to 0309)
The form of the display depends on the severity of theerror. The user can specify the severity for many errors bydirecting the drive to ignore the error situation, report thesituation as an alarm, or report the situation as a fault.
Faults (Red LED Lit)
The VFD signals that it has detected a severe error, orfault, by:
1. Enabling the red LED on the drive (LED is eithersteady or flashing)
2. Setting an appropriate bit in a Fault Word parameter(0305 to 0307)
3. Overriding the control panel display with the displayof a fault code
4. Stopping the motor (if it was on)5. Sets an appropriate bit in Fault Word parameter
0305-- 0307.
The fault code on the control panel display is temporary.Pressing the MENU, ENTER, UP button or DOWNbuttons removes the fault message. The messagereappears after a few seconds if the control panel is nottouched and the fault is still active.
Alarms (Green LED Flashing)
For less severe errors, called alarms, the diagnosticdisplay is advisory. For these situations, the drive issimply reporting that it had detected something unusual.In these situations, the drive:
1. Flashes the green LED on the drive (does not apply toalarms that arise from control panel operation errors)
2. Sets an appropriate bit in an Alarm Word parameter(0308 or 0309)
3. Overrides the control panel display with the displayof an alarm code and/or name
Alarm messages disappear from the control panel displayafter a few seconds. The message returns periodically aslong as the alarm condition exists.
Correcting Faults
The recommended corrective action for faults is shown inthe Fault Listing Table 9. The VFD can also be reset toremove the fault. If an external source for a startcommand is selected and is active, the VFD may startimmediately after fault reset.
To reset a fault indicated by a flashing red LED, turn offthe power for 5 minutes. To reset a fault indicated by a redLED (not flashing), press RESET from the control panelor turn off the power for 5 minutes. Depending on thevalue of parameter 1604 (FAULT RESET SELECT),digital input or serial communication could also be usedto reset the drive. When the fault has been corrected, themotor can be started.
History
For reference, the last three fault codes are stored intoparameters 0401, 0412, 0413. For the most recent fault(identified by parameter 0401), the drive stores additionaldata (in parameters 0402 through 0411) to aid introubleshooting a problem. For example, a parameter0404 stores the motor speed at the time of the fault. Toclear the fault history (all of Group 04, Fault Historyparameters), follow these steps:
1. In the control panel, Parameters mode, selectparameter 0401.
2. Press EDIT.3. Press the UP and DOWN buttons simultaneously.4. Press SAVE.
Correcting Alarms
To correct alarms, first determine if the Alarm requiresany corrective action (action is not always required). UseTable 10 to find and address the root cause of theproblem.
If diagnostics troubleshooting has determined that the driveis defective during the warranty period, contact ABBAutomation Inc., at 1--800--435--7365, option 4, option 3. Aqualified technician will review the problem with the callerand make a determination regarding how to proceed. Thismay involve dispatching a designated service station (DSS)representative from an authorized station, dispatching areplacement unit, or advising return for repair.
Control Panel Cleaning
Use a soft damp cloth to clean the control panel. Avoidharsh cleaners which could scratch the display window.
Battery Replacement
A battery is only used in assistant control panels that havethe clock function available and enabled. The batterykeeps the clock operating in memory during powerinterruptions. The expected life for the battery is greaterthan ten years. To remove the battery, use a coin to rotatethe battery holder on the back of the control panel.Replace the battery with type CR2032.
48LC
56
Table 9 – FAULT CODES
FAULTCODE FAULT NAME IN PANEL DESCRIPTION AND RECOMMENDED CORRECTIVE ACTION
1 OVERCURRENT Output current is excessive. Check for excessive motor load, insufficient acceleration time (parameters 2202ACCELER TIME 1, default 30 seconds), or faulty motor, motor cables or connections.
2DC OVERVOLT
Intermediate circuit DC voltage is excessive. Check for static or transient over voltages in the input power supply,insufficient deceleration time (parameters 2203 DECELER TIME 1, default 30 seconds), or undersized brake chopper(if present).
3 DEV OVERTEMP Drive heat sink is overheated. Temperature is at or above 115_C (239_F). Check for fan failure, obstructions in the airflow, dirt or dust coating on the heat sink, excessive ambient temperature, or excessive motor load.
4 SHORT CIRC Fault current. Check for short---circuit in the motor cable(s) or motor or supply disturbances.
5 OVERLOAD Inverter overload condition. The drive output current exceeds the ratings.
6 DC OVERVOLT Intermediate circuit DC voltage is not sufficient. Check for missing phase in the input power supply, blown fuse, orunder voltage on main circuit.
7 Al1 LOSS Analog input 1 loss. Analog input value is less than AI1 FLT LIMIT (3021). Check source and connection for analoginput and parameter settings for AI1 FLT LIMIT (3021) and 3001 AI<MIN FUNCTION.
8 Al2 LOSS Analog input 2 loss. Analog input value is less than AI2 FLT LIMIT (3022). Check source and connection for analoginput and parameter settings for AI2 FLT LIMIT (3022) and 3001 AI<MIN FUNCTION.
9 MOT OVERTEMP Motor is too hot, as estimated by the drive. Check for overloaded motor. Adjust the parameters used for the estimate(3005 through 3009). Check the temperature sensors and Group 35 parameters.
10
PANEL LOSS
Panel communication is lost and either drive is in local control mode (the control panel displays LOC), or drive is inremote control mode (REM) and is parameterized to accept start/stop, direction or reference from the control panel.To correct check the communication lines and connections. Check parameter 3002 PANEL COMM ERROR,parameters in Group 10: Command Inputs and Group 11:Reference Select (if drive operation is REM).
11 ID RUN FAIL The motor ID run was not completed successfully. Check motor connections.
12 MOTOR STALL Motor or process stall. Motor is operating in the stall region. Check for excessive load or insufficient motor power.Check parameters 3010 through 3012.
13 RESERVED Not used.
14 EXT FAULT 1 Digital input defined to report first external fault is active. See parameter 3003 EXTERNAL FAULT 1.
15 EXT FAULT 2 Digital input defined to report second external fault is active. See parameter 3004 EXTERNAL FAULT 2.
16 EARTH FAULT The load on the input power system is out of balance. Check for faults in the motor or motor cable. Verify that motorcable does not exceed maximum specified length.
17 UNDERLOAD Motor load is lower than expected. Check for disconnected load. Check parameters 3013 UNDERLOAD FUNCTIONthrough 3015 UNDERLOAD CURVE.
18 THERM FAIL Internal fault. The thermistor measuring the internal temperature of the drive is open or shorted. Contact Carrier.
19 OPEX LINK Internal fault. A communication---related problem has been detected between the OMIO and OINT boards. ContactCarrier.
20 OPEX PWR Internal fault. Low voltage condition detected on the OINT board. Contact Carrier.
21 CURR MEAS Internal fault. Current measurement is out of range. Contact Carrier.
22 SUPPLY PHASE Ripple voltage in the DC link is too high. Check for missing main phase or blown fuse.
23 RESERVED Not used.
24OVERSPEED
Motor speed is greater than 120% of the larger (in magnitude) of 2001 MINIMUM SPEED or 2002 MAXIMUM SPEEDparameters. Check parameter settings for 2001 and 2002. Check adequacy of motor braking torque. Checkapplicability of torque control. Check brake chopper and resistor.
25 RESERVED Not used.
26 DRIVE ID Internal fault. Configuration block drive ID is not valid.
27 CONFIG FILE Internal configuration file has an error. Contact Carrier.
28SERIAL 1 ERR
Field bus communication has timed out. Check fault setup (3018 COMM FAULT FUNC and 3019 COMM FAULTTIME). Check communication settings (Group 51 or 53 as appropriate). Check for poor connections and/or noise online.
29 EFB CON FILE Error in reading the configuration file for the field bus adapter.
30 FORCE TRIP Fault trip forced by the field bus. See the field bus reference literature.
31 EFB 1 Fault code reserved for the EFB protocol application. The meaning is protocol dependent.
32 EFB 2 Fault code reserved for the EFB protocol application. The meaning is protocol dependent.
33 EFB 3 Fault code reserved for the EFB protocol application. The meaning is protocol dependent.
34 MOTOR PHASE Fault in the motor circuit. One of the motor phases is lost. Check for motor fault, motor cable fault, thermal relay fault,or internal fault.
35 OUTP WIRING Error in power wiring suspected. Check that input power wired to drive output. Check for ground faults.
101---105 SYSTEM ERROR Error internal to the drive. Contact Carrier and report the error number.
201---206 SYSTEM ERROR Error internal to the drive. Contact Carrier and report the error number.
48LC
57
Table 9 — FAULT CODES (cont)
FAULTCODE FAULT NAME IN PANEL DESCRIPTION AND RECOMMENDED CORRECTIVE ACTION
1000
PAR HZRPM
Parameter values are inconsistent. Check for any of the following:2001 MINIMUM SPEED > 2002 MAXIMUM SPEED2007 MINIMUM FREQ > 2008 MAXIMUM FREQ2001 MINIMUM SPEED / 9908 MOTOR NOM SPEED is outside of the range: ---128/+1282002 MAXIMUM SPEED / 9908 MOTOR NOM SPEED is outside of the range: ---128/+1282007 MINIMUM FREQ / 9907 MOTOR NOM FREQ is outside of the range: --- 128/+1282008 MAXIMUM FREQ / 9907 MOTOR NOM FREQ is outside of the range: --- 128/+128
1001 PAR PFA REFNG Parameter values are inconsistent. Check that 2007 MINIMUM FREQ is negative, when 8123 PFA ENABLE is active.
1002
PAR PFA IOCNF
Parameter values are inconsistent. The number of programmed PFA relays does not match with Interlockconfiguration, when 8123 PFA ENABLE is active. Check consistency of RELAY OUTPUT parameters 1401 through1403, and 1410 through 1412. Check 8117 NR OF AUX MOTORS, 8118 AUTOCHANGE INTERV, and 8120INTERLOCKS.
1003 PAR AI SCALE Parameter values are inconsistent. Check that parameter 1301 AI 1 MIN > 1302 AI 1 MAX and that parameter 1304 AI2 MIN > 1305 AI 2 MAX.
1004 PAR AO SCALE Parameter values are inconsistent. Check that parameter 1504 AO 1 MIN > 1505 AO 1 MAX and that parameter 1510AO 2 MIN > 1511 AO 2 MAX.
1005
PAR PCU 2
Parameter values for power control are inconsistent: Improper motor nominal kVA or motor nominal power. Checkthe following parameters:1.1 < (9906 MOTOR NOM CURR * 9905 MOTOR NOM VOLT * 1.73 / PN) < 2.6Where: PN = 1000 * 9909 MOTOR NOM POWER (if units are kW) or PN = 746* 9909 MOTOR NOM POWER (if units are HP, e.g., in US)
1006 PAR EXT RO Parameter values are inconsistent. Check the extension relay module for connection and 1410 through 1412 RELAYOUTPUTS 4 through 6 have non---zero values.
1007 PAR FBUS Parameter values are inconsistent. Check that a parameter is set for field bus control (e.g., 1001 EXT1 COMMANDS= 10 (COMM)), but 9802 COMM PROT SEL = 0.
1008 PAR PFA MODE Parameter values are inconsistent. The 9904 MOTOR CTRL MODE must = 3 (SCALAR SPEED) when 8123 PFAENABLE activated.
1009
PAR PCU 1
Parameter values for power control are inconsistent or improper motor nominal frequency or speed. Check for bothof the following:1 < (60 * 9907 MOTOR NOM FREQ / 9908 MOTOR NOM SPEED < 160.8 < 9908 MOTOR NOM SPEED / (120 * 9907 MOTOR NOM FREQ / Motor poles) < 0.992
1010 OVERRIDE/PFACONFLICT
Override mode is enabled and PFA is activated at the same time. This cannot be done because PFA interlocks cannotbe observed in the override mode.
48LC
58
Table 10 – ALARM CODES
ALARMCODE
ALARM NAMEIN PANEL DESCRIPTION AND RECOMMENDED CORRECTIVE ACTION
2001 --- Reserved
2002 --- Reserved
2003 --- Reserved
2004 DIR LOCK The change in direction being attempted is not allowed. Do not attempt to change the direction of motor rotation, orChange parameter 1003 DIRECTION to allow direction change (if reverse operation is safe).
2005 I/O COMMField bus communication has timed out. Check fault setup (3018 COMM FAULT FUNC and 3019 COMM FAULTTIME). Check communication settings (Group 51 or 53 as appropriate). Check for poor connections and/or noise online.
2006 Al1 LOSS Analog input 1 is lost, or value is less than the minimum setting. Check input source and connections. Check theparameter that sets the minimum (3021) and the parameter that sets the Alarm/Fault operation (3001).
2007 Al2 LOSS Analog input 2 is lost, or value is less than the minimum setting. Check input source and connections. Checkparameter that sets the minimum (3022) and the parameter that sets the Alarm/Fault operation (3001).
2008 PANEL LOSS
Panel communication is lost and either the VFD is in local control mode (the control panel displays HAND), or theVFD is in remote control mode (AUTO) and is parameterized to accept start/stop, direction or reference from thecontrol panel. To correct, check the communication lines and connections, Parameter 3002 PANEL LOSS, andparameters in groups 10 COMMAND INPUTS and 11 REFERENCE SELECT (if drive operation is REM).
2009 --- Reserved
2010 MOT OVERTEMPMotor is hot, based on either the VFD estimate or on temperature feedback. This alarm warns that a Motor Overloadfault trip may be near. Check for overloaded motor. Adjust the parameters used for the estimate (3005 through 3009).Check the temperature sensors and Group 35 parameters.
2011 UNDERLOADMotor load is lower than expected. This alarm warns that a Motor Underload fault trip may be near. Check that themotor and drive ratings match (motor is NOT undersized for the drive). Check the settings on parameters 3013 to3015.
2012 MOTOR STALL Motor is operating in the stall region. This alarm warns that a Motor Stall fault trip may be near.
2013* AUTORESET This alarm warns that the drive is about to perform an automatic fault reset, which may start the motor. Tocontrol automatic reset, use parameter group 31 (AUTOMATIC RESET).
2014 AUTOCHANGE This alarm warns that the PFA autochange function is active. To control PFA, use parameter group 81 (PFA) and thePump Alternation macro.
2015 PFA INTERLOCK This alarm warns that the PFA interlocks are active, which means that the drive cannot start any motor (whenAutochange is used), or a speed regulated motor (when Autochange is not used).
2016 --- Reserved
2017* OFF BUTTON This alarm indicates that the OFF button has been pressed.
2018 PID SLEEP This alarm warns that the PID sleep function is active, which means that the motor could accelerate when the PIDsleep function ends. To control PID sleep, use parameters 4022 through 4026 or 4122 through 4126.
2019 ID RUN The VFD is performing an ID run.
2020 OVERRIDE Override mode is activated.
2021 START ENABLE 1MISSING
This alarm warns that the Start Enable 1 signal is missing. To control Start Enable 1 function, use parameter 1608. Tocorrect, check the digital input configuration and the communication settings.
2022 START ENABLE 2MISSING
This alarm warns that the Start Enable 2 signal is missing. To control Start Enable 2 function, use parameter1609. Tocorrect, check the digital input configuration and the communication settings.
2023 EMERGENCY STOP Emergency stop is activated.
* This alarm is not indicated by a relay output, even when the relay output is configured to indicate alarm conditions, parameter 1401 RELAY OUTPUT = 5(ALARM) or 16 (FLT/ALARM).
Copyright 2013 Carrier Corp. D 7310 W. Morris St. D Indianapolis, IN 46231 Edition Date: 06/13
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Catalog No: 48LC---4---6---01SI
Replaces: 48LC---01SI
48LC
59
START-UP CHECKLIST(Remove and Store in Job File)
I. PRELIMINARY INFORMATION
MODEL NO.: SERIAL NO.:
DATE: TECHNICIAN:
II. PRE-START-UP (insert checkmark in box as each item is completed)
j VERIFY THAT JOBSITE VOLTAGE AGREES WITH VOLTAGE LISTED ON RATING PLATE
j VERIFY THAT ALL PACKAGING MATERIALS HAVE BEEN REMOVED FROM UNIT
j REMOVE ALL SHIPPING HOLD DOWN BOLTS AND BRACKETS PER INSTALLATION INSTRUCTIONS
j VERIFY THAT CONDENSATE CONNECTION IS INSTALLED PER INSTALLATION INSTRUCTIONS
j VERIFY THAT FLUE HOOD IS INSTALLED
j CHECK REFRIGERANT PIPING FOR INDICATIONS OF LEAKS; INVESTIGATE AND REPAIR IF NECESSARY
j CHECK GAS PIPING FOR LEAKS
j CHECK ALL ELECTRICAL CONNECTIONS AND TERMINALS FOR TIGHTNESS
j CHECK THAT RETURN (INDOOR) AIR FILTERS ARE CLEAN AND IN PLACE
j VERIFY THAT UNIT INSTALLATION IS LEVEL
j CHECK FAN WHEELS AND PROPELLER FOR LOCATION IN HOUSING/ORIFICE AND SETSCREWTIGHTNESS
j CHECK TO ENSURE THAT ELECTRICAL WIRING IS NOT IN CONTACT WITH REFRIGERANT LINESOR SHARP METAL EDGES
j CHECK PULLEY ALIGNMENT AND BELT TENSION PER INSTALLATION INSTRUCTIONS
III. START-UP (REFER TO UNIT SERVICE/MAINTENANCE MANUAL FOR START--UPINSTRUCTIONS)
ELECTRICAL
SUPPLY VOLTAGE L1-L2 L2-L3 L3-L1
CIRCUIT 1 COMPRESSOR AMPS L1 L2 L3
CIRCUIT 2 COMPRESSOR AMPS L1 L2 L3
INDOOR-FAN AMPS
OUTDOOR-FAN AMPS NO. 1 NO. 2
TEMPERATURES
OUTDOOR-AIR TEMPERATURE DB WB
RETURN-AIR TEMPERATURE DB WB
COOLING SUPPLY AIR DB WB
GAS HEAT SUPPLY AIR DB
PRESSURES (Cooling Mode)
GAS INLET PRESSURE IN. WG
GAS MANIFOLD PRESSURE IN. WG (LOW FIRE) IN. WG (HI FIRE)
REFRIGERANT SUCTION, CIRCUIT 1 PSIG F
REFRIGERANT SUCTION, CIRCUIT 2 PSIG F
REFRIGERANT DISCHARGE, CIRCUIT 1 PSIG F
REFRIGERANT DISCHARGE, CIRCUIT 2 PSIG F
48LC
60
j VERIFY THAT 3-PHASE FAN MOTOR AND BLOWER ARE ROTATING IN CORRECT DIRECTION.
j VERIFY THAT 3-PHASE SCROLL COMPRESSOR IS ROTATING IN THE CORRECT DIRECTION
j VERIFY REFRIGERANT CHARGE USING CHARGING CHARTS
GENERAL
j SET ECONOMIZER MINIMUM VENT AND CHANGEOVER SETTINGS TO MATCH JOB REQUIREMENTS(IF EQUIPPED)
Copyright 2013 Carrier Corp. D 7310 W. Morris St. D Indianapolis, IN 46231 Edition Date: 06/13
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Catalog No: 48LC---4---6---01SI
Replaces: 48LC---01SI
48LC