installation manual - master

163911-UIM-A-0106

R-22OUTDOOR SPLIT-SYSTEM AIR CONDITIONINGMODELS: 13 SEER - CMB / AC3A / AL3A SERIES1-1/2 TO 5 TONS

INSTALLATION MANUAL

LISTED

ISO 9001Certified Quality

Management System

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SECTION I: GENERALThe outdoor units are designed to be connected to a matching indoorcoil with sweat connect lines. Sweat connect units are factory chargedwith refrigerant for a matching indoor coil plus 15 feet of field suppliedlines.Matching indoor coils are available with a thermal expansion valve only.The refrigerant charge may need to be changed for some indoor-out-door unit combinations, elevation differences or total line lengths. Referto Application Data covering “General Piping Recommendations andRefrigerant Line Length” (Part Number 036-61920-001).

SECTION II: SAFETYThis is a safety alert symbol. When you see this symbol onlabels or in manuals, be alert to the potential for personalinjury.

Understand and pay particular attention to the signal words DANGER,WARNING, or CAUTION.

DANGER indicates an imminently hazardous situation, which, if notavoided, will result in death or serious injury.

WARNING indicates a potentially hazardous situation, which, if notavoided, could result in death or serious injury.

CAUTION indicates a potentially hazardous situation, which, if notavoided may result in minor or moderate injury. It is also used toalert against unsafe practices and hazards involving only property dam-age.

INSPECTIONAs soon as a unit is received, it should be inspected for possible dam-age during transit. If damage is evident, the extent of the damageshould be noted on the carrier’s delivery receipt. A separate request forinspection by the carrier’s agent should be made in writing. See LocalDistributor for more information.

Improper installation may create a condition where the operation ofthe product could cause personal injury or property damage.Improper installation, adjustment, alteration, service or mainte-nance can cause injury or property damage. Refer to this manualfor assistance or for additional information, consult a qualified con-tractor, installer or service agency.

This product must be installed in strict compliance with theenclosed installation instructions and any applicable local, state,and national codes including, but not limited to building, electrical,and mechanical codes.

TABLE OF CONTENTSGENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1UNIT INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2INSTALLATIONS REQUIRING AN ADD-ON TXV KIT . . . . . . . . . . . . 4ELECTRICAL CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

EVACUATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7SYSTEM CHARGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7SYSTEM START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

LIST OF FIGURESTypical Installation with Required Clearances . . . . . . . . . . . . . . . . . . . 2Tubing Hanger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Underground Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Heat Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Typical Field Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Thermostat Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6Typical Field Wiring (Air Handler / Electrical Heat) . . . . . . . . . . . . . . . .7CFM Selection Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

LIST OF TABLES1-1/2 Ton Subcooling Charging Chart . . . . . . . . . . . . . . . . . . . . . . . . . 82 Ton Subcooling Charging Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92-1/2 Ton Subcooling Charging Chart . . . . . . . . . . . . . . . . . . . . . . . . . 93 Ton Subcooling Charging Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3-1/2 Ton Subcooling Charging Chart . . . . . . . . . . . . . . . . . . . . . . . . .94 Ton Subcooling Charging Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . .95 Ton Subcooling Charging Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . .9R-22 Saturated Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

163911-UIM-A-0106

2 Unitary Products Group

LIMITATIONSThe unit should be installed in accordance with all National, State andLocal Safety Codes and the limitations listed below:1. Limitations for the indoor unit, coil and appropriate accessories

must also be observed.2. The outdoor unit must not be installed with any duct work in the air

stream. The outdoor fan is the propeller type and is not designedto operate against any additional external static pressure.

3. The maximum and minimum conditions for operation must beobserved to assure a system that will give maximum performancewith minimum service.

4. The unit should not be operated at outdoor temperatures below55° F without an approved low ambient operation accessory kitinstalled.

5. The maximum allowable line length for this product is 75 feet.

SECTION III: UNIT INSTALLATIONLOCATIONBefore starting the installation, select and check the suitability of thelocation for both the indoor and outdoor unit. Observe all limitations andclearance requirements.The outdoor unit must have sufficient clearance for air entrance to thecondenser coil, for air discharge and for service access. See Figure 1.

NOTE: For multiple unit installations, units must be spaced a minimumof 18 inches apart. (coil face to coil face.)

If the unit is to be installed on a hot sun exposed roof or a black-toppedground area, the unit should be raised sufficiently above the roof orground to avoid taking the accumulated layer of hot air into the outdoorunit.Provide an adequate structural support.

ADD-ON REPLACEMENT/RETROFITThe following steps should be performed in order to insure proper sys-tem operation and performance.1. Change-out the indoor coil , if required to an approved R-22 coil/

condensing unit combination with the appropriate metering device.2. If the outdoor unit is being replaced due to a compressor burnout,

then installation of a 100% activated alumina suction-line filterdrier in the suction-line is required, in addition to the factoryinstalled liquid-line drier. Operate the system for 10 hours. Monitorthe suction drier pressure drop. If the pressure drop exceeds 3psig, replace both the suction-line and liquid-line driers. After atotal of 10 hours run time where the suction-line pressure drop hasnot exceeded 3 psig, replace the liquid line drier, and remove thesuction-line drier. Never leave a suction-line drier in the systemlonger than 50 hours of run time.

GROUND INSTALLATIONThe unit may be installed at ground level on a solid base that will notshift or settle, causing strain on the refrigerant lines and possible leaks.Maintain the clearances shown in Figure 1 and install the unit in a levelposition.Normal operating sound levels may be objectionable if the unit is placeddirectly under windows of certain rooms (bedrooms, study, etc.).

Isolate the unit from rain gutters to avoid any possible wash out of thefoundation.

ROOF INSTALLATIONWhen installing units on a roof, the structure must be capable of sup-porting the total weight of the unit, including a pad, lintels, rails, etc.,which should be used to minimize the transmission of sound or vibra-tion into the conditioned space.

UNIT PLACEMENT1. Provide a base in the pre-determined location.2. Remove the shipping carton and inspect for possible damage.3. Compressor tie-down bolts should remain tightened.4. Position the unit on the base provided.

LIQUID LINE FILTER-DRIERThe air conditioning unit’s copper spun bi-flow filter/dryer is located onthe liquid line.NOTE: Replacements for the liquid line drier must be exactly the same

as marked on the original factory drier. See Source 1 for O.E.M.replacement driers.

FIGURE 1: Typical Installation with Required Clearances

THERMOSTAT

NEC CLASS 1WIRING

TO INDOORBLOWER

NEC CLASS 2WIRING

TO COIL

WEATHERPROOFDISCONNECT SWITCH

48” OVERHEADCLEARANCE

24” SERVICEACCESSCLEARANCE

18” FRONT& SIDES

NOTE: ALL OUTDOOR WIRING MUST BE WEATHERPROOF

SEAL OPENINGS WITHPERMAGUM OR EQUIVALENT

163911-UIM-A-0106

Unitary Products Group 3

PIPING CONNECTIONSThe outdoor condensing unit must be connected to the indoor evapora-tor coil using field supplied refrigerant grade copper tubing that is inter-nally clean and dry. Units should be installed only with the tubing sizesfor approved system combinations as specified in tabular data sheet.The charge given is applicable for total tubing lengths up to 15 feet. SeeApplication Data Part Number 036-61920-000 for installing tubing oflonger lengths and elevation differences.NOTE: Using a larger than specified line size could result in oil return

problems. Using too small a line will result in loss of capacityand other problems caused by insufficient refrigerant flow. Slopehorizontal vapor lines at least 1" every 20 feet toward the out-door unit to facilitate proper oil return.

PRECAUTIONS DURING LINE INSTALLATION1. Install the lines with as few bends as possible. Care must be taken

not to damage the couplings or kink the tubing. Use clean harddrawn copper tubing where no appreciable amount of bendingaround obstruction is necessary. If soft copper must be used, caremust be taken to avoid sharp bends which may cause a restriction.

2. The lines should be installed so that they will not obstruct serviceaccess to the coil, air handling system or filter.

3. Care must also be taken to isolate the refrigerant lines to minimizenoise transmission from the equipment to the structure.

4. The vapor line must be insulated with a minimum of 1/2" foam rub-ber insulation (Armaflex or equivalent). Liquid lines that will beexposed to direct sunlight and/or high temperatures must also beinsulated.

Tape and suspend the refrigerant lines as shown. DO NOT allow tubemetal-to-metal contact. See Figure 2.5. Use PVC piping as a conduit for all underground installations as

shown in Figure 3. Buried lines should be kept as short as possibleto minimize the build up of liquid refrigerant in the vapor line duringlong periods of shutdown

6. Pack fiberglass insulation and a sealing material such as perma-gum around refrigerant lines where they penetrate a wall to reducevibration and to retain some flexibility.

7. See application part number 036-61920-000 for additional pipinginformation.

PRECAUTIONS DURING BRAZING OF LINESAll outdoor unit and evaporator coil connections are copper-to-copperand should be brazed with a phosphorous-copper alloy material suchas Silfos-5 or equivalent. DO NOT use soft solder. The outdoor unitshave reusable service valves on both the liquid and vapor connections.The total system refrigerant charge is retained within the outdoor unitduring shipping and installation. The reusable service valves are pro-vided to evacuate and charge per this instruction.Serious service problems can be avoided by taking adequate precau-tions to assure an internally clean and dry system.

PRECAUTIONS DURING BRAZING SERVICE VALVEPrecautions should be taken to prevent heat damage to service valveby wrapping a wet rag around it as shown in Figure 4. Also, protect allpainted surfaces, insulation, and plastic base during brazing. After braz-ing, cool joint with wet rag.

Valve can be opened by removing the plunger cap and fully inserting ahex wrench into the stem and backing out counter-clockwise until valvestem just touches the chamfered retaining wall.Connect the refrigerant lines using the following procedure:1. Remove the cap and Schrader core from both the liquid and vapor

service valve service ports at the outdoor unit. Connect low pres-sure nitrogen to the liquid line service port.

2. Braze the liquid line to the liquid valve at the outdoor unit. Be sureto wrap the valve body with a wet rag. Allow the nitrogen to con-tinue flowing. Refer to the Tabular Data Sheet for proper liquid linesizing.

3. Carefully remove the rubber plugs from the evaporator liquid andvapor connections at the indoor coil.

Failure to do so or using a substitute drier or a granular type mayresult in damage to the equipment.

R-22Filter-Drier

Source 1 Part No.

Apply with Models

CMB / AC3A / AL3A

029-22157-000 1-1/2 - 5 Ton

FIGURE 2: Tubing Hanger

LiquidLine

Incorrect

CorrectTape

Sheet Metal Hanger

Insulated Vapor Line

FIGURE 3: Underground Installation

Dry nitrogen should always be supplied through the tubing while itis being brazed, because the temperature required is high enoughto cause oxidation of the copper unless an inert atmosphere is pro-vided. The flow of dry nitrogen should continue until the joint hascooled. Always use a pressure regulator and safety valve to insurethat only low pressure dry nitrogen is introduced into the tubing.Only a small flow is necessary to displace air and prevent oxidation.

This is not a backseating valve. The service access port has avalve core. Opening or closing valve does not close service accessport. If the valve stem is backed out past the chamfered retaining wall,the O-ring can be damaged causing leakage or system pressurecould force the valve stem out of the valve body possibly causingpersonal injury.

TO INDOOR COIL TO OUTDOOR UNIT

LIQUID LINE

CAP

PVC

CONDUIT

INSULATED

VAPOR LINE

163911-UIM-A-0106


4. Braze the liquid line to the evaporator liquid connection. Nitrogenshould be flowing through the evaporator coil.

5. Slide the grommet away from the vapor connection at the indoorcoil. Braze the vapor line to the evaporator vapor connection. Afterthe connection has cooled, slide the grommet back into originalposition. Refer to the Tabular Data Sheet for proper vapor line siz-ing.

6. Protect the vapor valve with a wet rag and braze the vapor lineconnection to the outdoor unit. The nitrogen flow should be exitingthe system from the vapor service port connection. After this con-nection has cooled, remove the nitrogen source from the liquid fit-ting service port.

7. Replace the Schrader core in the liquid and vapor valves.8. Go to “SECTION IV” for TXV installation.9. Leak test all refrigerant piping connections including the service

port flare caps to be sure they are leak tight. DO NOT OVER-TIGHTEN (between 40 and 60 inch - lbs. maximum).

NOTE: Line set and indoor coil can be pressurized to 250 psig with drynitrogen and leak tested with a bubble type leak detector. Thenrelease the nitrogen charge.

NOTE: Do not use the system refrigerant in the outdoor unit to purge orleak test.

10. Evacuate the vapor line, evaporator and the liquid line, to 500microns or less.

11. Replace cap on service ports. Do not remove the flare caps fromthe service ports except when necessary for servicing the system.

12. Release the refrigerant charge into the system. Open both the liq-uid and vapor valves by removing the plunger cap and with anallen wrench back out counter-clockwise until valve stem justtouches the chamfered retaining wall. See Page 3 "PRECAU-TIONS DURING BRAZING SERVICE VALVE".

13. Replace plunger cap finger tight, then tighten an additional 1/12turn (1/2 hex flat). Cap must be replaced to prevent leaks.

See "System Charge” section for checking and recording systemcharge.

SECTION IV: INSTALLATIONS REQUIRING AN ADD-ON TXV KITFor installations requiring a TXV kit, refer to the Installation Instructionsaccompanying the TXV kit.

SECTION V: ELECTRICAL CONNECTIONSGENERAL INFORMATION & GROUNDINGCheck the electrical supply to be sure that it meets the values specifiedon the unit nameplate and wiring label.Power wiring, control (low voltage) wiring, disconnect switches and overcurrent protection must be supplied by the installer. Wire size should besized per NEC requirements.

The complete connection diagram and schematic wiring label is locatedon the inside surface of the unit service access panel.

FIELD CONNECTIONS POWER WIRING1. Install the proper size weatherproof disconnect switch outdoors

and within sight of the unit.2. Remove the screws at the bottom of the corner cover. Slide corner

cover down and remove from unit. See Figure 5.3. Run power wiring from the disconnect switch to the unit.4. Remove the service access panel to gain access to the unit wiring.

Route wires from disconnect through power wiring opening pro-vided and into the unit control box as shown in Figure 5.

5. Install the proper size time-delay fuses or circuit breaker, andmake the power supply connections.

6. Energize the crankcase heater if equipped to save time by pre-heating the compressor oil while the remaining installation is com-pleted.

FIGURE 4: Heat Protection

The evaporator is pressurized.

Do not connect manifold gauges unless trouble is suspected.Approximately 3/4 ounce of refrigerant will be lost each time a stan-dard manifold gauge is connected.

Never attempt to repair any brazed connections while the system isunder pressure. Personal injury could result.

All field wiring must USE COPPER CONDUCTORS ONLY and bein accordance with Local, National, Fire, Safety & Electrical Codes.This unit must be grounded with a separate ground wire in accor-dance with the above codes.

FIGURE 5: Typical Field Wiring

CONTROLWIRING

POWERWIRING

CORNERCOVER

SERVICEACCESSPANEL

163911-UIM-A-0106


FIELD CONNECTIONS CONTROL WIRING1. Route low voltage wiring into bottom of control box as shown in

Figure 5. Make low voltage wiring connections inside the junctionbox per Figures 7-13.

2. The complete connection diagram and schematic wiring label islocated on the inside surface of the unit service access panel.

3. Replace the corner cover and service access panel that wereremoved in Steps 2 and 4 of the “Field Connections Power Wiring”section.

4. All field wiring to be in accordance with national electrical codes(NEC) and/or local-city codes.

NOTE: A Start Assist Kit is available and recommended for long line setapplications or in areas of known low voltage problems.

5. Mount the thermostat about 5 ft. above the floor, where it will beexposed to normal room air circulation. Do not place it on an out-side wall or where it is exposed to the radiant effect from exposedglass or appliances, drafts from outside doors or supply air grilles.

6. Route the 24-volt control wiring (NEC Class 2) from the outdoorunit to the indoor unit and thermostat.

NOTE: To eliminate erratic operation, seal the hole in the wall at thethermostat with permagum or equivalent to prevent air draftsaffecting the operation of in the thermostat.

DEHUMIDIFICATION CONTROLA dehumidification control accessory 2HU06700124 may be used withvariable speed air handlers or furnaces in high humidity areas. Thiscontrol works with the variable speed indoor unit to provide cooling at areduced air flow, lowering evaporator temperature and increasing latentcapacity. The humidistat in this control opens the humidistat contacts onhumidity rise. To install, refer to instructions packaged with the acces-sory and Figures 8, 9, 11 & 13. Prior to the installation of the dehumidifi-cation control, the jumper across the HUMIDISTAT terminals on theindoor variable speed air handler or furnace CFM selection board mustbe removed.During cooling, if the relative humidity in the space is higher than thedesired set point of the dehumidification control, the variable speedblower motor will operate at lower speed until the dehumidification con-trol is satisfied. A 40-60% relative humidity level is recommended toachieve optimum comfort.If a dehumidification control is installed, it is recommended that a mini-mum air flow of 325 cfm/ton be supplied at all times.For additional connection diagrams for all UPG equipment refer to “LowVoltage System Wiring” document available online at www.upgnet.comin the Product Catalog Section.

163911-UIM-A-0106


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163911-UIM-A-0106


CFM SELECTION BOARD SETTINGS

For proper system operation the CFM Selection Board jumpers must beset properly. Refer to the Tabular Data Sheet for the recommended air flow settingsfor each size condensing unit.Set the cooling speed per the instructions for the air handler or furnaceby selecting the correct COOL and ADJ taps. Verify the airflow usingthe LED display on the CFM selection board.The HUMIDISTAT jumper must also be removed if a dehumidistat isinstalled.

SECTION VI: EVACUATIONIt will be necessary to evacuate the system to 500 microns or less. If aleak is suspected, leak test with dry nitrogen to locate the leak. Repairthe leak and test again. To verify that the system has no leaks, simply close the valve to the vac-uum pump suction to isolate the pump and hold the system under vac-uum. Watch the micron gauge for a few minutes. If the micron gaugeindicates a steady and continuous rise, it’s an indication of a leak. If thegauge shows a rise, then levels off after a few minutes and remainsfairly constant, it’s an indication that the system is leak free but still con-tains moisture and may require further evacuation if the reading isabove 500 microns.

SECTION VII: SYSTEM CHARGEThe factory charge in the outdoor unit includes enough charge for theunit and the highest sales volume evaporator. Some indoor coilmatches may require additional charge. See tabular data sheet pro-vided in unit literature packet for charge requirements.

The “TOTAL SYSTEM CHARGE” must be permanently stamped on theunit data plate.Total system charge is determined as follows:1. Determine outdoor unit charge from tabular data sheet.2. Determine indoor coil adjustment from tabular data sheet.3. Calculate the line charge using the tabular data sheet if line length

is greater than 15 feet.4. Total system charge = item 1 + item 2 + item 3.5. Permanently stamp the unit data plate with the total amount of

refrigerant in the system.Use the following subcooling charging method whenever additionalrefrigerant is required for the system charge. A superheat chargingmethod is not suitable for TXV equipped systems.

Measurement MethodIf a calibrated charging cylinder or accurate weighing device is avail-able, add refrigerant accordingly.

Check flare caps on service ports to be sure they are leak tight. DONOT OVERTIGHTEN (between 40 and 60 inch - lbs. maximum).

FIGURE 7: Typical Field Wiring (Air Handler / Electrical Heat)

ALL FIELD WIRING TO BE IN ACCORDANCE WITH ELECTRIC CODE (NEC) AND/OR LOCAL CODES

POWER WIRING208/230-1-60

CONTACTORTERMINALS

COIL

GND.LUG

C Y R G W

Y R G W

POWER WIRING

CONTROL WIRING

FACTORY WIRING24 VOLT CONTROL WIRINGMINIMUM 18 GA. WIRE(NEC CLASS 2)

FURNACE OR AIR HANDLER TERMINAL BLOCK

ROOM THERMOSTATCONDENSING UNIT

ALL OUTDOOR WIRING MUST BE WEATHERPROOF. USE COPPER CONDUCTORS ONLY.

TERMINAL W IS ONLYREQUIRED ON SYSTEMSWITH HEAT.

*

*

FIGURE 8: CFM Selection Board

CFM SELECTION BOARD

TAP SELECTION

D

C

B

A

D

C

B

A

COOL HEAT ADJ DELAY

REMOVE FOR

HEAT PUMP HUMIDISTAT

Do not leave the system open to the atmosphere.

Refrigerant charging should only be carried out by a qualified airconditioning contractor.

Compressor damage will occur if system is improperly charged. Onnew system installations, charge system per tabular data sheet forthe matched coil and follow guidelines in this instruction.

163911-UIM-A-0106


Subcooling Charging MethodFor the cooling operation, the recommended subcooling is 10°F1. Set the system running in the cooling mode by setting the thermo-

stat at least 6°F below the room temperature.2. Operate the system for a minimum of 15-20 minutes.3. Refer to the tabular data sheet for the recommended airflow and

verify this indoor airflow (it should be about 400 SCFM per ton).4. Measure the liquid refrigerant pressure P and temperature T at the

service valve.5. Calculate the saturated liquid temperature ST from Table 1.6. Subcooling temperature TC = Saturated Temperature (ST) - Liquid

Temp (T).

Add charge if the calculated subcooling temperature TC in Step 6 islower than the recommended level. Remove and recover the refrigerantif the subcooling TC is higher than the recommended level. See Table 1for R-22 saturation temperatures. See Tables 2-7 for unit specific subcooling charts.

SECTION VIII: SYSTEM START-UPENERGIZE CRANKCASE HEATERIf this unit is equipped with a crankcase heater for the compressor, awarning label with an adhesive back is supplied in the unit installationinstruction packet. This label should be attached to the field supplieddisconnect switch where it will be easily seen.In order to energize the crankcase heater, set the indoor cooling ther-mostat to the "OFF" position. Close the line power disconnect to theunit.IMPORTANT: An attempt to start the compressor without at least 8hours of crankcase heat will damage the compressor.WITH POWER TO UNIT AND THERMOSTAT IN COOLING POSITION.

1. In the cooling cycle, discharge gas is pumped to the outdoor coilwhich is the condenser. The indoor coil is the evaporator.

2. If fan switch is in "ON" position, a circuit is made through blowerrelay to provide continuous blower operation.

3. With fan switch in "AUTO" position, a circuit is made from thermo-stat cooling contact through blower relay to provide blower opera-tion.

4. System will cycle with thermostat demand to provide cooling asneeded.

INDICATIONS OF PROPER OPERATION Cooling1. The outdoor fan should be running, with warm air being dis-

charged from the top of the unit.2. The indoor blower (furnace or air handler) will be operating, dis-

charging cool air from the ducts. Coils or other parts in the air cir-cuit should be cleaned as often as necessary to keep the unitclean. Use a brush, vacuum cleaner attachment, or other suitablemeans.

3. The vapor line at the outdoor unit will feel cool to the touch.4. The liquid line at the outdoor unit will feel warm to the touch.

Instructing the OwnerAssist owner with processing warranty cards and/or online registration.Review Owners Guide and provide a copy to the owner and guidanceon proper operation and maintenance. Instruct the owner or the opera-tor how to start, stop and adjust temperature setting.When applicable, instruct the owner that the compressor is equippedwith a crankcase heater to prevent the migration of refrigerant to thecompressor during the “OFF” cycle. The heater is energized only whenthe unit is not running. If the main switch is disconnected for long peri-ods, do not attempt to start the unit until 8 hours after the switch hasbeen connected. This will allow sufficient time for all liquid refrigerant tobe driven out of the compressor.The installer should also instruct the owner on proper operation andmaintenance of all other system components.

Maintenance1. Dirt should not be allowed to accumulate on the outdoor coils or

other parts in the air circuit. Clean as often as necessary to keepthe unit clean. Use a brush, vacuum cleaner attachment, or othersuitable means.

2. The outdoor fan motor is permanently lubricated and does notrequire periodic oiling.

3. If the coil needs to be cleaned, it should be washed with CalgonCoilclean (mix one part Coilclean to seven parts water). Allowsolution to remain on coil for 30 minutes before rinsing with cleanwater. Solution should not be permitted to come in contact withpainted surfaces.

4. Refer to the furnace or air handler instructions for filter and blowermotor maintenance.

5. The indoor coil and drain pan should be inspected and cleanedregularly to prevent odors and assure proper drainage.

Example: The pressure P and temperature T measured at the liquid service port is 228 Psig and 101 °F. From Table 1, the saturated tem-perature for 228 Psig is 110.5°. The subcooling temperature TC = 110.5°-101°=9.5°F

IT IS UNLAWFUL TO KNOWINGLY VENT, RELEASE OR DIS-CHARGE REFRIGERANT INTO THE OPEN AIR DURINGREPAIR, SERVICE, MAINTENANCE OR THE FINAL DISPOSALOF THIS UNIT.WHEN THE SYSTEM IS FUNCTIONING PROPERLY AND THEOWNER HAS BEEN FULLY INSTRUCTED, SECURE THEOWNER’S APPROVAL.

TABLE 1: 1-1/2 Ton Subcooling Charging Chart

Outdoor Ambient

Indoor Wet Bulb (°F)57 62 67 72

DB (°F) Liquid Pressure (psig) at Base Valve65 136 (7) 137 (7) 139 (7) 142 (7) 70 149 (8) 150 (8) 152 (8) 155 (8) 75 162 (9) 163 (9) 165 (9) 168 (9) 80 176 (9) 177 (9) 179 (9) 182 (9) 85 191 (9) 192 (9) 194 (9) 197 (9) 90 205 (9) 206 (9) 208 (9) 211 (9) 95 221 (9) 222 (9) 224 (9) 227 (9)

100 236 (9) 237 (9) 239 (9) 242 (9) 105 253 (9) 254 (9) 256 (9) 259 (9) 110 269 (9) 270 (9) 272 (9) 275 (9) 115 286 (9) 287 (9) 289 (9) 292 (9) 120 304 (8) 305 (8) 307 (9) 310 (9) 125 322 (8) 323 (8) 325 (9) 328 (8)

163911-UIM-A-0106


TABLE 2: 2 Ton Subcooling Charging Chart

Outdoor Ambient



100 247 (12) 248 (12) 251 (12) 254 (12) 105 263 (12) 264 (12) 267 (12) 270 (12) 110 281 (12) 282 (12) 285 (12) 288 (12) 115 298 (12) 299 (12) 302 (12) 305 (12) 120 316 (11) 317 (11) 320 (11) 323 (11) 125 335 (11) 336 (11) 339 (11) 342 (11)


Outdoor Ambient



100 239 (11) 241 (11) 242 (11) 244 (10) 105 255 (11) 257 (11) 258 (11) 260 (10) 110 273 (10) 275 (11) 276 (11) 278 (10) 115 291 (10) 293 (10) 294 (10) 296 (10) 120 309 (10) 311 (10) 312 (10) 314 (10) 125 328 (9) 330 (9) 331 (9) 333 (9)


Outdoor Ambient



100 248 (15) 249 (15) 252 (15) 255 (15) 105 265 (15) 266 (15) 269 (15) 272 (15) 110 282 (15) 283 (15) 286 (15) 289 (15) 115 300 (15) 301 (15) 304 (15) 307 (15) 120 319 (14) 320 (15) 323 (15) 326 (14) 125 338 (14) 339 (14) 342 (14) 345 (14)


Outdoor Ambient



100 257 (14) 258 (14) 261 (14) 264 (14) 105 276 (15) 277 (15) 280 (14) 283 (14) 110 295 (15) 296 (15) 299 (14) 302 (14) 115 314 (15) 315 (15) 318 (14) 321 (14) 120 334 (15) 335 (14) 338 (14) 341 (14) 125 355 (14) 356 (14) 359 (14) 362 (14)


Outdoor Ambient



100 247 (14) 248 (14) 249 (14) 250 (13) 105 264 (15) 265 (15) 266 (15) 267 (14) 110 283 (15) 284 (15) 285 (15) 286 (14) 115 302 (15) 303 (15) 304 (15) 305 (14) 120 321 (15) 322 (15) 323 (15) 324 (14) 125 341 (14) 342 (14) 343 (14) 344 (14)


Outdoor Ambient



100 249 (12) 250 (12) 253 (13) 256 (13) 105 267 (13) 268 (13) 271 (13) 274 (13) 110 285 (13) 286 (13) 289 (13) 292 (13) 115 304 (13) 305 (13) 308 (13) 311 (13) 120 323 (12) 324 (12) 327 (12) 330 (13) 125 343 (12) 344 (12) 347 (12) 350 (12)

163911-UIM-A-0106


TABLE 8: R-22 Saturated PropertiesPressure

PSIG Temp °F Pressure PSIG Temp °F Pressure

PSIG Temp °F Pressure PSIG Temp °F Pressure

PSIG Temp °F Pressure PSIG Temp °F

80 48 110 64 140 78 170 91 200 101 230 111 82 49 112 65 142 79 172 91 202 102 232 112 84 50 114 66 144 80 174 92 204 103 234 112 86 51 116 67 146 81 176 93 206 103 236 113 88 52 118 68 148 82 178 94 208 104 238 114 90 54 120 69 150 83 180 94 210 105 240 114 92 55 122 70 152 84 182 95 212 105 242 115 94 56 124 71 154 84 184 96 214 106 244 115 96 57 126 72 156 85 186 97 216 107 246 116 98 58 128 73 158 86 188 97 218 107 248 117

100 59 130 74 160 87 190 98 220 108 250 117 102 60 132 75 162 88 192 99 222 109 252 118 104 61 134 76 164 88 194 99 224 109 254 118 106 62 136 77 166 89 196 100 226 110 256 119 108 63 138 78 168 90 198 101 228 111 258 119

163911-UIM-A-0106


SECTION IX: WIRING DIAGRAM

FIGURE 9: Wiring Diagram

Subject to change without notice. Printed in U.S.A. 163911-UIM-A-0106Copyright © by York International Corp. 2006. All rights reserved. Supersedes: NothingNothing

Unitary 5005 NormanProduct York OKGroup Drive 73069

NOTES

installation manual - master

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