wiring diagrams - utcccs-cdn. · pdf file2 legend and notes for fig. 1-16 legend bp —...
TRANSCRIPT
![Page 1: Wiring Diagrams - utcccs-cdn. · PDF file2 LEGEND AND NOTES FOR FIG. 1-16 LEGEND BP — Building Pressure C—Contactor, Compressor CAP — Capacitor CB — Circuit Breaker CCB —](https://reader036.vdocument.in/reader036/viewer/2022081802/5a7071e97f8b9ab6538beee6/html5/thumbnails/1.jpg)
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.PC 111 Catalog No. 534-80145 Printed in U.S.A. Form 48/50A-1W Pg 1 2-03 Replaces: NewBook 1 1
Tab 1a 1b
Wiring DiagramsINDEX
ACCESSORIES
NOTE: Accessory wiring is shown on the unit wiring dia-grams. Refer to the appropriate drawing for accessory wiring.The following accessories are shown on the main control boxcircuit drawing (Fig. 8): thermostat, remote economizerposition override, remote economizer minimum position setpoint, remote 4-20 mA economizer position, and space IAQsensor. The following accessories are shown on the auxiliarycontrol box circuit drawing (Fig. 9): outdoor enthalpy
changeover sensor and differential enthalpy changeoversensor. The following accessories are shown on the accessoryboard wiring drawing (Fig. 10): outdoor air quality sensor,remote supply air set point, demand limit controller, outdoorinlet cfm sensor, fan status switch, demand limit-redline,demand limit-loadshed, fire pressurization, fire evacuation, firesmoke purge, and IAQ override switch.
ELECTRIC HEAT POWER DIAGRAMS
NOTE: All power leads connect to (single) TB7 power terminal block– 2 or 3 conductors per terminal.
TYPE UNIT NUMBER FIG. NO.
Component Arrangement48/50AJ,AK,AW,AY020-035 48EJ502489 148/50AJ,AK,AW,AY040-060 48EJ502490 2
Power Schematic
48/50AJ,AK,AW,AY020-027 48EJ503085 348/50AJ,AK,AW,AY030-035 48EJ503084 4
48/50AJ,AK,AW,AY040 48EJ503083 548/50AJ,AK,AW,AY050 48EJ503082 648/50AJ,AK,AW,AY060 48EJ503081 7
Main Control Box Circuit 48/50AJ,AK,AW,AY020-060 48EJ503075 8Auxiliary Control Box Wiring 48/50AJ,AK,AW,AY020-060 48EJ503076 9
Accessory Board Wiring 48/50AJ,AK,AW,AY020-060 48EJ503086 10
Gas Heat Control Circuit(2-Stage Heat)
48AJ,AK,AW,AY020-050 48EJ503079 1148AJ,AK,AW,AY060 48EJ503077 12
Gas Heat Control Circuit(Staged Gas Heat)
48AJ,AW020-050 48EJ502488 1348AJ,AW060 48EJ503078 14
Electric Heat Control Circuit50AJ,AK,AW,AY020-050 48EJ503080 15
50AJ,AK,AW,AY060 48EJ503087 16
ACCESSORY UNIT FIG. NO.
Motormaster® V Low Ambient Controller
48/50AJ,AK,AW,AY020-035 1748/50AJ,AK,AW,AY040-060 18
Space Sensor Temperature Averaging 48/50AJ,AK,AW,AY020-060 19
UNIT SIZES ELEC CHARACTERISTICSNOMINAL kW
FIG. NO. QTY PER UNITLo Heat Hi Heat
020-050
208/230-3-60 36 72 20 2460-3-60380-3-60400-3-50
362427
724954
20 2
575-3-60 36 72 20 2
060
208/230-3-60 54 108 20 3460-3-60380-3-60400-3-50
543741
1087482
20 3
575-3-60 54 108 20 3
48/50AJ,AK,AW,AY020-060Single Package Rooftop
Gas Heating/Electric Cooling and Electric Cooling Unitswith ComfortLink™ Controls
50/60 Hz
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LEGEND AND NOTES FOR FIG. 1-16
LEGEND
BP — Building PressureC — Contactor, CompressorCAP — CapacitorCB — Circuit BreakerCCB — Control Circuit BreakerCCH — Crankcase HeaterCCN — Carrier Communication NetworkCOMP — Compressor MotorCR — Control RelayCS — Compressor SafetyCSB — Current Sensing BoardDP — Duct PressureDS — Disconnect SwitchEC — Enthalpy ControlECB — Economizer Control BoardEDT — Evaporator Discharge Temperature SensorEMM — Controls Option BoardEQUIP — EquipmentFIOP — Factory-Installed OptionFU — FuseGND — GroundHC — Heater ContactorHIR — Heat Interlock RelayHPS — High-Pressure SwitchHS — Hall Effect SensorIAQ — Indoor Air QualityIDM — Induced Draft MotorIFC — Indoor Fan ContactorIFCB — Indoor Fan Circuit BreakerIFM — Indoor Fan MotorIFR — Indoor Fan RelayIGC — Integrated Gas Unit ControllerIP — Internal ProtectorL — LightLAT — Leaving Air Temperature SensorLPT — Low Pressure TransducerLS — Limit SwitchMBB — Main Base BoardMGV — Main Gas ValveNEC — National Electrical CodeOARH — Outdoor-Air Relative HumidityOAT — Outdoor-Air Temperature SensorOFC — Outdoor Fan ContactorOFM — Outdoor Fan MotorPEC — Power Exhaust ContactorPEM — Power Exhaust MotorPL — Plug AssemblyPRI — PrimaryR — RelayRARH — Return Air Relative HumidityRAT — Return Air Temperature SensorRS — Rollout SwitchSCB — Staged Gas BoardSCT — Saturated Condensing Temperature SensorSGC — Staged Gas ControllerSST — Saturated Suction Pressure TransducerTB — Terminal BlockTC — Thermostat CoolingTH — Thermostat HeatingTRAN — TransformerVFD — Variable Frequency Drive
Terminal Block
Terminal (Unmarked)
Terminal (Marked)
Splice
Factory Wiring
Field Wiring
To indicate common potential only, not to repre-sent wiring.
To indicate FIOP or Accessory
PLUG LOCATION REFERENCE
NOTES:1. Factory wiring is in accordance with the national electrical codes. Any field
modifications or additions must be in compliance with all applicable codes.2. Use 75° C min wire for field power supply, use copper wires for all units.3. All circuit breakers “Must Trip Amps” are equal to or less than 156% RLA.4. Compressor and fan motors are thermally protected — three phase motors
protected against primary single phase conditions.5. Red jumper wire must be added between R and WI for Space Temperature
mode and temporarily during Service-Test mode when the heaters need tooperate.
NAME LOCATION DESCRIPTIONPL1 MAIN CB Communications from MMB to PL5/PL4PL2 MAIN CB Smoke Detector & 24V from TB5 to AUX CBOX
PL3 MAIN CB Heat Control & 24V from MBB to PL9PL4 MAIN CB Communications from OL1 to SCB/EMMPL5 AUX CB Communications from PL1 to ECB1 & ECB2
PL6 AUX CB REM/OCC from PL7 to ECB1PL7 MAIN CB REM/OCC from TB5/6 to PL6/12PL8 AUX CB ECM Control from PL12 to ECB1
PL9 ELEC HEAT Control from PL3 to IGC/HR/PL14PL10 GAS HEAT IDM Line Voltage from PL11 to IDM(CAP)PL11 MAIN CB Line Voltage from OFC2 to PL10 (IDM)
PL12 AUX CB Branch from PL2,7,8 to PL13,18,19,20PL13 AUX CB Smoke Det. Control from PL12 to Smoke Det.PL14 ELEC HEAT Control Power to Heater Box 1
PL15 ELEC HEAT Control Power to Heater Box 2PL16 ELEC HEAT Control/Signal from PL12 to EconomizerPL18 AUX CB Control/Signal from PL12 to CO2 Sensor
PL19 AUX CB Control/Signal from PL12 to EconomizerPL20 AUX CB 24V Power from PL12 to ECB1/ECB2PL21 AUX CB 24V Power from PL20 to ECB1/PEC
PL22 MAIN CB Line Voltage from CCB to PECPL23 AUX CB Pwr. Exh. from PEC to PL24,25,26,27PL24 AUX CB PEM Pwr. from PL23
PL25 AUX CB PEM Pwr. from PL23PL26 AUX CB PEM Pwr. from PL23PL27 AUX CB PEM Pwr. from PL23
PL28 MAIN CB Thermistor Input from MMB to PL29/PL30PL29 EVAP SECT SAT HarnessPL30 AUX CB OAT/RAT Harness
PL31 MAIN CB HPS/SSTPL33 MAIN CB Crankcase HeatersPL34 MAIN CB SCT
PL35 EVAP SECT Hot Gas By-Pass Harness
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SEQUENCE OF OPERATION
Constant Volume (CV) Units — On power up, thecontrol module will activate the initialization software. Theinitialization software will determine the unit configuration andalso initialize any controls loops and input/output devices. Allalarms and configurations are saved in memory and maintainedduring power outages. All alarms will be maintained inmemory and must be cleared through the Scrolling Marqueedisplay.
The unit can be configured with two different control types:thermostat control or space temperature sensor control.THERMOSTAT CONTROL — If the unit is equipped with athermostat with Y1, Y2, W1, W2 and G connections, then thecontrol will perform the following sequence.
When terminal G is energized, the indoor fan will turn on.The fan must be running for heating or cooling to occur. If Y1is closed (first stage of cooling is energized), then the unitcontrol will first check the ability to use the economizer. If theeconomizer can be used, then the unit control will modulate thedamper open to maintain the low-load economizer leaving airtemperature set point.
If Y2 closes (second stage of cooling is energized), then theunit control will lower the leaving air temperature set point tothe configured set point. If the economizer cannot satisfy theload, then the compressors will be sequenced on to maintaineither the low or high load temperature set points. If theeconomizer cannot be used or the enable control disables theeconomizer, then the control will sequence the compressorsbased on the Y1 and Y2 signals.
If two-stage control has been selected, then the unit controlwill map the compressors to the Y1 and Y2 inputs (first andsecond stage cooling) as defined in the loading sequence. IfAdaptive mode has been selected, then the control will add andremove compressor stages to maintain the high and lowdemand set points. If Y1 is closed (first stage of coolingenergized), at least one compressor stage will be turned on.
If W1 closes (first stage of heating is energized), then theunit will be in the Heating mode. The economizer will beclosed to the minimum position. If the unit is equipped withgas or electric heat, then the first stage of heat will beenergized. If W2 closes, then the unit control will turn on thesecond stage of heat. If the unit is equipped with a staged gasheat control option, then the W1 and W2 signal will be used tocontrol the gas heat to the configurable low and high heat loadleaving air temperature set points. If the unit is equipped withgas heat, then the IGC board will control the operation of thegas heat. See the Gas Heat Unit Operation section for the IGCboard sequence of operation. SPACE TEMPERATURE SENSOR CONTROL — If spacetemperature operation has been selected using a T55, T56, orT58 sensor, then a wire jumper must be added between R, W1,and W2. If a remote occupancy control method has beenselected, then the remote occupancy input must first be closedfor the unit to go into heat, vent, or cooling modes. If theinternal timeclock is used, the unit control module determinesthe occupancy state based on the system time schedules.
If Temperature Compensated Start is active, the unit willbe controlled as in the occupied mode. The TemperatureCompensated Start function will start the unit before thescheduled occupied time (as determined by prior operation) tobring the space to the set point temperature when occupiedtime starts. As an example, if the unoccupied set point is 60 F,the occupied set point is 72 F, and the occupied time periodstarts at 8:00 AM, the Temperature Compensated Start functionwill bring on the unit at 7:45 AM (as determined from previous
operation) so the room temperature will be at 72 F when theoccupied time starts.
If the unit has been configured for a pre-occupancy purge,then the control will start the unit in Vent mode prior to theoccupancy time to vent the space. If an IAQ (indoor air quality)sensor is being used and the low IAQ set point is satisfied, thenthe occupancy Purge mode will be terminated.
The set points for heat and cooling are configurable throughthe Scrolling Marquee display.NOTE: If a T56 sensor is being used, then the slide bar on thesensor can offset the set point by has much as 5 degrees.
If the space temperature rises above the cooling set point,then the unit will go into Cooling mode. If the economizer canbe used, the control will first try to control to the LeavingAir Temperature set point. The set point will depend on thespace temperature. If the temperature is above the LowDemand set point, then the Low Economizer Load DischargeAir Temperature set point will be used. If the temperature isabove the High Load Space Temperature set point, then theHigh Load Leaving Air Temperature set point will be used. Ifthe economizer cannot satisfy the load the compressors willbe sequenced on to maintain either the low or high loadtemperature set points. If the economizer cannot be used or theunit control disables the economizer, then the unit control willsequence the compressors based on the low and high loadspace temperature variables. If two-stage control has beenselected then the control will map the compressors to the lowand high loads as defined in the loading sequence. If Adaptivemode has been selected then the control will add and removecompressors stages to maintain the low and high demandleaving air set points.
If the load goes below the heating space temperature setpoints, the Heating mode will initiate. The economizer will beclosed to the minimum position and (if the unit is equippedwith gas or electric heat) the first stage of heat will beenergized. If the space temperature goes below the High LoadSpace Temperature set point then the control will turn on thesecond stage of heat. If the unit is equipped with a staged gasheat control option then the low load and high load demandsignal will control the Leaving Air Temperature set point andwill turn on heating stages to maintain the Leaving AirTemperature set points.
If the unit is configured for unoccupied free cooling, me-chanical cooling, or heating and the room temperature goesabove or below the unoccupied configuration set points, thenthe unit control will turn on free cooling, mechanical cooling,or heat as needed to return room temperature within theunoccupied set points. When in this mode, the economizerdampers will be maintained fully closed or to the minimumunoccupied ventilation set point.
Variable Air Volume Control — On power up, thecontrol module will activate the initialization software. Theinitialization software will determine the unit configuration andalso initialize any controls loops and input/output devices. Allalarms and configurations are saved in memory and maintainedduring power outages. All alarms will be maintained inmemory and must be cleared through the Scrolling Marqueedisplay.
The unit will first determine the mode of operation. If theunit has been configured for space temperature demand thenthe control will determine, based on the configurable set points,if the unit should be in the Heat mode, Vent mode or Coolingmode. If the unit is configured for return air temperaturecontrol, then the unit control will start the fan and monitor thereturn air temperature against the configurable set point todetermine if the unit should be in cooling, vent or heatingmode.
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If the control is connected to a ComfortID™ system, theroom terminals are equipped with microprocessor controls thatgive commands to the base module. If linkage is active, thecontrol module will replace local ComfortLink™ set pointsand occupancy data with linkage supplied data.
If Temperature Compensated Start is active, then the unitcontrol will start the unit in advance of the occupied time topre-cool or heat the space. If the unit is configured to use apre-purge cycle, then the control will start the unit in vent modebased on a pre-start time interval. If an IAQ (indoor air quality)sensor is being used and the low IAQ control point is satisfiedthen the mode will be terminated. The mode terminates whenthe occupied period starts.
If Cooling mode is required, then the controlling set pointwill be the Leaving Evaporator Air Temperature set point. If aneconomizer is present and the changeover control allows theeconomizer to be used, then the control will first attempt tocontrol the leaving evaporator air temperature using freecooling. If this cannot satisfy the load then additionalcompressor stages will be turned on to maintain the leaving airtemperature. When both compressors and the economizer arebeing used, the unit control will use the economizer dampers tomaintain better control of the leaving air and to prevent highcompressor cycling. If the economizer cannot be used, then itwill be set to the minimum vent position.
If the unit is equipped with an optional hot gas bypass valve,then the unit control will use hot gas as an additional stage ofcapacity. When the first stage of cooling is required, the unitcontrol will turn on the circuit A compressor and the hot gasbypass valve. When additional cooling is called for, the unitcontrol will turn off the hot gas bypass valve. The valve willalso be used for additional freeze protection of the coils whenlow evaporator refrigerant temperatures are detected using thesuction pressure tranducers.
The unit control will also monitor the supply duct pressureand send a 4 to 20 mA signal to the factory supplied inverter tocontrol the speed of the fan to maintain the user-configuredsupply duct status pressure. If the ComfortLink control is onthe CCN (Carrier Comfort Network) or a building linkagesystem, then the control also supports static pressure resetbased on the needs of the zones.
If the unit has been enabled for occupied heat and if thespace temperature sensor (SPT), return air temperature sensor(RAT), or CCN (in a building linkage system) demand requiresthat the unit be in Heating mode, then the unit control willenergize the electric or gas heat to warm the space. In thismode, the unit control will energize the heat interlock relay(HIR). Note that for the linkage systems the interlock relayconnection is not required. Once the mode is enabled, the unitcontrol will use up to 2 stages of heat to control to the return airtemperature set point. Heating will continue until the returntemperature set point is satisfied. If the unit is configured formorning warm-up and the heating demand is below the setpoint during the first 10 minutes of operation, then the unitcontrol will energize full heating capacity until the return airtemperature set point is satisfied.
Gas Heat Unit Operation — The gas heat units incor-porate 2 (3 on size 060) separate systems to provide gas heat.Each system incorporates its own induced-draft motor,Integrated Gas Control (IGC) board, 2-stage gas valve,manifold, and safeties. The systems are operated in parallel.For example, when there is a call for first stage heat, bothinduced-draft motors operate, both gas valves are energized,and both IGC boards initiate spark. All of the gas heatingcontrol is performed through the IGC boards (located in theheating section).
The MBB (Main Base Board) module board initiates andterminates heating operation and monitors the status of therequirements for indoor fan operation. The fan will becontrolled directly by the MBB board.
When the thermostat or room sensor calls for heating, theMBB board will close heating relays and send power to W oneach of the IGC boards. An LED on the IGC board will be onduring normal operation. A check is made to ensure that therollout switches and limit switches are closed and the induced-draft motors are not running. After the induced-draft motors areenergized and speed is proven with the Hall Effect sensor onthe motor, the ignition activation period begins. The burnerswill ignite within 5 seconds. When ignition occurs the IGCboard will continue to monitor the condition of the rollout andlimit switches, the Hall Effect sensor and the flame sensor.
If the unit is controlled through a room thermostat set forfan auto., 45 seconds after ignition occurs the indoor-fan motorwill be energized and the outdoor-air dampers will open totheir minimum position. If the over-temperature limit opensprior to the start of the indoor-fan blower, on the next attemptthe 45-second delay will be shortened to 5 seconds less than thetime from initiation of heat to when the limit tripped. Gas willnot be interrupted to the burners and heating will continue.Once modified, the fan on delay will not change back to45 seconds unless power is reset to the control.
If the unit is controlled through a room sensor, the indoorfan will operate in the occupied mode and the outdoor-airdampers will be at the minimum position. In the unoccupiedmode, the indoor fan will be energized through the IGC boardwith a 45-second delay and the outside-air dampers will moveto the minimum unoccupied set point.
When additional heat is required, the second stage MBBoutput relay closes and initiates power to the second stage of allmain gas valves in all sections. When the demand is satisfied,MBB heat output relays will open and the gas valves closeinterrupting the flow of gas to the main burners.
If the call for stage 1 heat lasts less than 1 minute, theheating cycle will not terminate until 1 minute after W1became active. If the unit is configured for intermittent fan thenthe indoor-fan motor will continue to operate for an additional45 seconds then stop and the outdoor-air dampers will close. Ifthe over temperature limit opens after the indoor motor isstopped within 10 minutes of W1 becoming inactive, on thenext cycle the time will be extended by 15 seconds. Themaximum delay is 3 minutes. Once modified, the fan off delaywill not change back to 45 seconds unless power is reset to thecontrol.
Indoor Air Quality — The Indoor Air Quality (IAQ)function provides a demand-based control for ventilation airquantity, by providing a modulating outside air damperposition that is proportional to space CO2 level. The ventilationdamper position is varied between a minimum ventilation level(based on internal sources of contaminants and CO2 levelsother than the effect of people) and the maximum designventilation level (determined at maximum populated status inthe building). During a less-than-fully populated space period,the CO2 level will be lower than maximum design ventilationlevel at full-load design condition, thus less ventilation air willbe required. Reduced quantities of ventilation air will result inreduced operating costs. Space CO2 level is monitored andcompared to user-configured set points. An accessory CO2sensor for space (or return duct mounting) is required. The IAQroutine can be enhanced by also installing a sensor for OutdoorAir Quality (OAQ).
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During the occupied period in the absence of a demand forcooling using outside air, if CO2 level is below the set point forthe minimum ventilation level, the outside-air damper will beopened to and maintained at the minimum ventilation leveldamper position set point.
When the space CO2 level exceeds set point for the mini-mum ventilation level condition, the ComfortLink™ controlwill begin to open the outside air damper position to admitmore ventilation air and remove the additional contaminants.As the space CO2 level approaches the set point for maximumdesign ventilation level condition, the outside air damperposition will reach the maximum ventilation level damperposition set point limit. Damper position will be modulated in adirectly proportional relationship between these two CO2 setpoint limits and their corresponding damper position limits.
In most applications a fixed reference value can be set forthe outdoor air quality level, but the control also supports theaddition of an outside air quality sensor that will then becompared to the indoor or return IAQ sensor. If an OAQ sensoris connected, the demand set point levels will be adjustedautomatically as the outdoor CO2 levels vary. Also, if theoutdoor CO2 level exceeds a user-configured maximum limitvalue, then outside air damper position will be limited to theminimum ventilation damper set point value. The unit controlcan also receive these signals through the Carrier ComfortNetwork (CCN).
The IAQ and OAQ measurement levels are displayed bythe ComfortLink™ control in parts per million (PPM).
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=ba
d se
nsor
DP
_A /
SC
TAC
ircui
t A s
atur
ated
con
dens
ing
tem
pera
ture
5 K
The
rmis
tor
AN
1J8
, 21-
2321
=5v,
22=
Vin
, 23=
GN
D (
ther
mis
tor
21-2
2)(0
-5V
DC
, the
rmis
tor,
ohm
s)A
IN 0
0-5V
DC
tra
nsdu
cer
DP
_B /
SC
TB
Circ
uit B
sat
urat
ed c
onde
nsin
g te
mpe
ratu
re5
K T
herm
isto
rA
N2
J8, 2
4-26
24=5
v, 2
5=V
in, 2
6=G
ND
(th
erm
isto
r 24
-25)
(0-5
VD
C, t
herm
isto
r, oh
ms)
AIN
10-
5VD
C t
rans
duce
rS
P_A
/ S
STA
Circ
uit A
sat
urat
ed s
uctio
n pr
essu
re
Pre
ss T
rans
duce
rA
N3
J8, 1
5-17
15=5
v, 1
6=V
in, 1
7=G
ND
(th
erm
isto
r 15
-16)
(0-5
VD
C, t
herm
isto
r, oh
ms)
AIN
210
K th
erm
isto
rS
P_B
/ S
ST
BC
ircui
t B s
atur
ated
suc
tion
pres
sure
P
ress
Tra
nsdu
cer
AN
4J8
, 18-
2018
=5v,
19=
Vin
, 20=
GN
D (
ther
mis
tor
18-2
0)(0
-5V
DC
, the
rmis
tor,
ohm
s)A
IN 3
10K
ther
mis
tor
RA
TR
etur
n ai
r te
mpe
ratu
re10
K T
herm
isto
rA
N5
J8, 9
-10
9 (
ther
mis
tor,
ohm
s)A
IN4
10K
ther
mis
tor
ED
TE
vapo
rato
r D
isch
arge
Air
Tem
pera
ture
10K
The
rmis
tor
AN
6J8
, 11-
1211
(th
erm
isto
r, oh
ms)
AIN
510
K th
erm
isto
rO
AT
Out
door
air
tem
pera
ture
10K
The
rmis
tor
AN
7J8
, 13-
1413
(th
erm
isto
r, oh
ms)
AIN
610
K th
erm
isto
rS
PT
Spa
ce te
mpe
ratu
re (
T55
/56)
10K
The
rmis
tor
AN
8J8
, 1-2
1 (
ther
mis
tor,
ohm
s)A
IN7
10K
ther
mis
tor
(T55
cur
ve)
SP
TOS
pace
tem
pera
ture
offs
et (
T56
)10
K T
herm
isto
rA
N9
J8, 3
-43
(th
erm
isto
r, oh
ms)
AIN
810
0K P
ot (
T56
slid
er)
IAQ
, IA
QM
INO
VIA
Q a
nalo
g in
put
4-20
ma
AN
10J8
, 5-6
5 (
ther
mis
tor,
ohm
s)A
IN 9
mu
lti-u
se 4
-20m
A w
ith r
esis
tor
FLT
SF
ilter
Sta
tus
Sw
itch
Inpu
tA
N11
J8, 7
-87
(th
erm
isto
r, oh
ms)
AIN
10
gold
-pla
ted
switc
h, p
rogr
amm
able
sen
seO
UT
PU
TS
CM
PB
2C
ompr
esso
r B
2R
elay
RLY
1J1
0, 2
0-21
20 =
RLY
1A (
=R
LY2A
), 2
1 =
RLY
1B1
= C
lose
s R
LY1A
/ R
LY1B
P6.
00=
com
pres
sor
OF
F
1=
com
pres
sor
ON
CM
PB
1C
ompr
esso
r B
1R
elay
RLY
2J1
0, 2
2-23
22 =
RLY
2A (
=R
LY1A
), 2
3 =
RLY
2B1
= C
lose
s R
LY2A
/ R
LY2B
P6.
10=
com
pres
sor
OF
F
1=
com
pres
sor
ON
CM
PA2
Com
pres
sor
A2
Rel
ayR
LY 3
J10,
24-
2524
= R
LY3A
(=
RLY
4A),
25
= R
LY3B
1 =
Clo
ses
RLY
3A /
RLY
3BP
6.2
0=co
mpr
esso
r O
FF
1
=co
mpr
esso
r O
NC
MPA
1C
ompr
esso
r A
1R
elay
RLY
4J1
0, 2
6-27
26 =
RLY
4A (
=R
LY3A
), 2
7 =
RLY
4B1
= C
lose
s R
LY4A
/ R
LY4B
PB
.00=
com
pres
sor
OF
F
1=
com
pres
sor
ON
CO
ND
FAN
BC
onde
nser
fan
BR
elay
RLY
5J1
0, 1
0-11
10 =
RLY
5A (
=R
LY6A
), 1
1 =
RLY
5B1
= C
lose
s R
LY5A
/ R
LY5B
PB
.10=
fan
OF
F
1=
fan
ON
CO
ND
FAN
AC
onde
nser
fan
AR
elay
RLY
6J1
0, 1
2-13
12 =
RLY
6A (
=R
LY5A
), 1
3 =
RLY
6B1
= C
lose
s R
LY6A
/ R
LY6B
PB
.20=
fan
OF
F
1=
fan
ON
HS
2H
eat s
tage
2R
elay
RLY
7J1
0, 1
4-16
14 =
15
= R
LY7A
, 16
= R
LY7B
1 =
Clo
ses
RLY
7A /
RLY
7BP
B.3
0=st
age
OF
F
1=
stag
e O
NH
S1
Hea
t sta
ge 1
Rel
ayR
LY 8
J10,
17-
1917
=1
8 =
RLY
8A, 1
9 =
RLY
8B1
= C
lose
s R
LY8A
/ R
LY8B
PB
.40=
stag
e O
FF
1
=st
age
ON
HIR
Hea
t int
erlo
ck r
elay
Rel
ayR
LY 9
J10,
4-6
4 =
5 =
RLY
9A, 6
= R
LY9B
1 =
Clo
ses
RLY
9A /
RLY
9BP
B.5
0=re
lay
OF
F
1=
rela
y O
NS
FS
uppl
y fa
nR
elay
RLY
10
J10,
7-9
7 =
8 =
RLY
10A
, 9 =
RLY
10B
1 =
Clo
ses
RLY
10A
/ R
LY10
BP
B.6
0=fa
n O
FF
1
=fa
n O
NA
LR
MA
larm
out
put r
elay
Rel
ayR
LY 1
1J1
0, 1
-31
= 2
= R
LY11
A, 3
= R
LY11
B1
= C
lose
s R
LY11
A /
RLY
11B
PB
.70=
rela
y O
FF
1
=re
lay
ON
PO
INT
NA
ME
PO
INT
DE
SC
RIP
TIO
NI/O
TY
PE
I/O P
OIN
T N
AM
EC
ON
NE
CTO
RP
IN N
O.
SIG
NA
L P
IN(S
)P
OR
T S
TAT
E D
ETA
ILP
OR
T D
ES
IGN
AT
ION
PO
INT
INT
ER
PR
ETA
TIO
N
INP
UT
SR
MT
INR
emot
e oc
cupa
ncy
Sw
itch
DI1
J4, 1
-22
24VA
C =
1, 0
VA
C =
0P
4.5
prog
ram
mab
le s
ense
EN
TH
Eco
nom
izer
ena
ble
Sw
itch
DI2
J4, 3
-44
24VA
C =
1, 0
VA
C =
0P
4.4
prog
ram
mab
le s
ense
RA
RH
Ret
urn
air
rela
tive
hum
idity
4-20
ma
AN
1J5
, 1-3
1=24
VD
C, 2
=0-
20m
A in
, 3=
GN
D
0-2
0mA
AN
54-
20m
A s
enso
rO
AR
HO
utdo
or a
ir re
lativ
e hu
mid
ity4-
20m
aA
N2
J5, 4
-64=
24V
DC
, 5=
0-20
mA
in, 6
=G
ND
0
-20m
A A
N4
4-20
mA
sen
sor
OU
TP
UT
SE
CO
NO
CM
DE
cono
miz
er a
ctua
tor
(ana
log
cont
rol)
4-20
ma
AO
1J9
, 1-2
1=0-
20m
A, 2
=G
ND
0-20
mA
OU
TP
7.7/
DA
14m
A=0
%
20m
A=1
00%
EC
ON
OC
MD
Eco
nom
izer
act
uato
r (d
igita
l con
trol
)di
gita
lP
P/M
PJ7
, 1-3
1=
PP
/MP
Dat
a, 2
=24V
AC
, 3=
GN
D B
elim
o P
P/M
P P
roto
col
ac
tuat
or c
ontr
ol v
ia P
PP
E_A
Pow
er E
xhau
st s
tage
Are
lay
RLY
1J8
, 1-3
1 =
2 =
RLY
1A, 3
= R
LY1B
1 =
Clo
ses
RLY
1A /
RLY
1BP
2.0
0=st
age
OF
F
1=
stag
e O
NP
E_B
Pow
er E
xhau
st s
tage
Bre
lay
RLY
2J8
, 4-6
4 =
5 =
RLY
2A, 6
= R
LY2B
1 =
Clo
ses
RLY
2A /
RLY
2BP
2.1
0=st
age
OF
F
1=
stag
e O
NP
E_C
Pow
er E
xhau
st s
tage
Cre
lay
RLY
3J8
, 7-9
7 =
8 =
RLY
3A, 9
= R
LY3B
1 =
Clo
ses
RLY
3A /
RLY
3BP
2.2
0=st
age
OF
F
1=
stag
e O
NE
CO
N_P
WR
E
cono
miz
er P
ower
rela
yR
LY 6
J8, 1
6-18
16 =
17
= R
LY6A
, 18
= R
LY6B
1 =
Clo
ses
RLY
6A /
RLY
6BP
2.5
0=ac
tuat
or O
FF
1
=ac
tuat
or O
N
![Page 7: Wiring Diagrams - utcccs-cdn. · PDF file2 LEGEND AND NOTES FOR FIG. 1-16 LEGEND BP — Building Pressure C—Contactor, Compressor CAP — Capacitor CB — Circuit Breaker CCB —](https://reader036.vdocument.in/reader036/viewer/2022081802/5a7071e97f8b9ab6538beee6/html5/thumbnails/7.jpg)
7
INP
UT
/OU
TP
UT
CH
AN
NE
L D
ES
IGN
AT
ION
S —
VA
V C
ON
TR
OL
BO
AR
D (
EC
B2)
INP
UT
/OU
TP
UT
CH
AN
NE
L D
ES
IGN
AT
ION
S —
ST
AG
ED
HE
AT
CO
NT
RO
L B
OA
RD
INP
UT
/OU
TP
UT
CH
AN
NE
L D
ES
IGN
AT
ION
S —
CO
NT
RO
LS
OP
TIO
N B
OA
RD
PO
INT
NA
ME
PO
INT
DE
SC
RIP
TIO
NI/O
TY
PE
I/O P
OIN
T N
AM
EC
ON
NE
CTO
RP
IN N
O.
SIG
NA
L P
IN(S
)P
OR
T S
TAT
E D
ETA
ILP
OR
T D
ES
IGN
AT
ION
PO
INT
INT
ER
PR
ETA
TIO
N
INP
UT
S
not u
sed
DI1
J4, 1
-22
24VA
C =
1, 0
VA
C =
0P
4.5
no
t use
dD
I2J4
, 3-4
424
VAC
= 1
, 0V
AC
= 0
P4.
4B
PB
uild
ing
stat
ic p
ress
ure
4-20
ma
AN
1J5
, 1-3
1=24
VD
C, 2
=0-
20m
A in
, 3=
GN
D
0-2
0mA
AN
54-
20m
A p
ress
ure
tran
smitt
er
SP
Sup
ply
Duc
t sta
tic p
ress
ure
4-20
ma
AN
2J5
, 4-6
4=24
VD
C, 5
=0-
20m
A in
, 6=
GN
D
0-2
0mA
AN
44-
20m
A p
ress
ure
tran
smitt
er
OU
TP
UT
SS
FAN
_VF
DS
uppl
y Fa
n In
vert
er s
peed
4-20
ma
AO
1J9
, 1-2
1=0-
20m
A, 2
=G
ND
0-20
mA
OU
TP
7.7/
DA
14m
A=
0Hz
2
0mA
=m
ax H
z
not u
sed
PP
/MP
J7, 1
-3 1
=P
P/M
P D
ata,
2=
24V
AC
, 3=
GN
D B
elim
o P
P/M
P P
roto
col
not u
sed
RLY
1J8
, 1-3
1 =
2 =
RLY
1A,
3
= R
LY1B
1 =
Clo
ses
RLY
1A /
RLY
1BP
2.0
0=P
E s
tage
4 O
FF
1
=P
E s
tage
4 O
N
not u
sed
RLY
2J8
, 4-6
4 =
5 =
RLY
2A,
6 =
RLY
2B1
= C
lose
s R
LY2A
/ R
LY2B
P2.
10=
PE
sta
ge 5
OF
F
1=
PE
sta
ge 5
ON
no
t use
dR
LY 3
J8, 7
-97
= 8
= R
LY3A
,
9 =
RLY
3B1
= C
lose
s R
LY3A
/ R
LY3B
P2.
20=
PE
sta
ge 6
OF
F
1=
PE
sta
ge 6
ON
HG
BP
VH
ot G
as B
ypas
s V
alve
rela
yR
LY 6
J8, 1
6-18
16 =
17
= R
LY6A
, 1
8 =
RLY
6B1
= C
lose
s R
LY6A
/ R
LY6B
P2.
5
PO
INT
NA
ME
PO
INT
DE
SC
RIP
TIO
NI/O
TY
PE
I/O P
OIN
T N
AM
EC
ON
NE
CTO
RP
IN N
O.
SIG
NA
L P
IN(S
)P
OR
T S
TAT
E D
ETA
ILP
OR
T D
ES
IGN
AT
ION
PO
INT
INT
ER
PR
ETA
TIO
N
INP
UT
S
not u
sed
AN
1J5
, 1-3
1=5v
, 2=
Vin
, 3=
GN
D
(th
erm
isto
r 1-
2)(0
-5V
DC
, the
rmis
tor,
ohm
s)U
12,A
IN0
not u
sed
AN
2J5
, 4-6
4=5v
, 5=
Vin
, 6=
GN
D
(th
erm
isto
r 4-
5)(0
-5V
DC
, the
rmis
tor,
ohm
s)U
12,A
IN1
S
AT
1S
uppl
y ai
r te
mpe
ratu
re 1
10K
ther
mis
tor
AN
3J5
, 7-9
7=5v
, 8=
Vin
, 9=
GN
D
(th
erm
isto
r 7-
8)(0
-5V
DC
, the
rmis
tor,
ohm
s)U
12,A
IN2
10K
ther
mis
tor
SA
T2
Sup
ply
air
tem
pera
ture
210
K th
erm
isto
rA
N4
J5, 1
0-12
10=
5v, 1
1=V
in, 1
2=G
ND
(
ther
mis
tor
10-1
1)(0
-5V
DC
, the
rmis
tor,
ohm
s)U
12,A
IN3
10K
ther
mis
tor
SA
T3
Sup
ply
air
tem
pera
ture
310
K th
erm
isto
rA
N5
J5, 1
3-15
13=
5v, 1
4=V
in, 1
5=G
ND
(
ther
mis
tor
13-1
4)(0
-5V
DC
, the
rmis
tor,
ohm
s)U
12,A
IN4
10K
ther
mis
tor
no
t use
dA
N6
J6, 1
-31=
5v, 2
=V
in, 3
=G
ND
(
ther
mis
tor
1-2)
(0-5
VD
C, t
herm
isto
r, oh
ms)
U12
,AIN
5
no
t use
dA
N7
J6, 4
-64=
5v, 5
=V
in, 6
=G
ND
(
ther
mis
tor
4-5)
(0-5
VD
C, t
herm
isto
r, oh
ms)
U12
,AIN
6
not u
sed
AN
8J6
, 7-9
7=5v
, 8=
Vin
, 9=
GN
D
(th
erm
isto
r 7-
8)(0
-5V
DC
, the
rmis
tor,
ohm
s)U
12,A
IN7
no
t use
dA
N9
J7, 1
-21
(th
erm
isto
r, oh
ms)
U12
,AIN
8
not u
sed
AN
10J7
, 3-4
3 (
ther
mis
tor,
ohm
s)U
12,A
IN9
OU
TP
UT
S
not u
sed
AO
1J8
, 1-2
1=0-
20m
A,
2=
GN
D0-
20m
A O
UT
U7,
P1-
4
not u
sed
AO
2J8
, 3-4
3=0-
20m
A,
4=
GN
D0-
20m
A O
UT
U7,
P7-
6H
S3
Hea
t Sta
ge 3
Rel
ayR
LY1
J9, 1
-31
= 2
= R
LY1A
,
3 =
RLY
1B1
= C
lose
s R
LY1A
/ R
LY1B
U7,
P8-
5 0
=st
age
OF
F
1=
stag
e O
NH
S4
Hea
t Sta
ge 4
Rel
ayR
LY 2
J9, 4
-64
=5
= R
LY2A
,
6 =
RLY
2B1
= C
lose
s R
LY2A
/ R
LY2B
U7,
P8-
4 0
=st
age
OF
F
1=
stag
e O
NH
S5
Hea
t Sta
ge 5
Rel
ayR
LY 3
J9, 7
-97
= 8
= R
LY3A
,
9 =
RLY
3B1
= C
lose
s R
LY3A
/ R
LY3B
U7,
P8-
3 0
=st
age
OF
F
1=
stag
e O
NH
S6
Hea
t Sta
ge 6
Rel
ayR
LY 4
J9, 1
0-12
10 =
11
= R
LY4A
, 1
2 =
RLY
4B1
= C
lose
s R
LY4A
/ R
LY4B
U7,
P8-
2 0
=st
age
OF
F
1=
stag
e O
N
R
LY 5
J9, 1
3-15
13 =
14
= R
LY5A
, 1
5 =
RLY
5B1
= C
lose
s R
LY5A
/ R
LY5B
U7,
P8-
1 0
=st
age
OF
F
1=
stag
e O
N
PO
INT
NA
ME
PO
INT
DE
SC
RIP
TIO
NT
YP
E O
F I/
OI/O
PO
INT
NA
ME
CO
NN
EC
TOR
PIN
NO
.S
IGN
AL
PIN
(S)
STA
TE
vs
CO
NT
RO
LP
OR
T D
ES
IGN
AT
ION
PO
INT
INT
ER
PR
ETA
TIO
N
INP
UT
SS
FS
Sup
ply
Fan
Sta
tus
switc
hS
witc
hD
I 1J7
, 1-2
20
= 2
4vac
, 1=
0va
cP
8.0
D
MD
_SW
1D
eman
d Li
mit
- R
edlin
eS
witc
hD
I 2J7
, 3-4
40
= 2
4vac
, 1=
0va
cP
8.1
D
MD
_SW
2D
eman
d Li
mit
- Lo
ad S
hed
Sw
itch
DI 3
J7, 5
-66
0 =
24v
ac, 1
= 0
vac
P8.
2
PR
ES
Fire
Pre
ssur
izat
ion
Sw
itch
DI 4
J7, 7
-88
0 =
24v
ac, 1
= 0
vac
P8.
3
EVA
CF
ire E
vacu
atio
nS
witc
hD
I 5J7
, 9-1
010
0 =
24v
ac, 1
= 0
vac
P8.
4
PU
RG
Sm
oke
Pur
geS
witc
hD
I 6J7
, 11-
1212
0 =
24v
ac, 1
= 0
vac
P8.
5
IAQ
INIn
door
Air
Qua
lity
Ove
rrid
e S
witc
hS
witc
hD
I 7J7
, 13-
1414
0 =
24v
ac, 1
= 0
vac
P8.
6
OA
CF
MO
utsi
de A
ir C
FM
4-20
ma
AN
7J6
, 1-3
2 (1
= lo
op p
ower
) (
0-20
mA
inpu
t)A
IN 9
D
MD
LM
TM
A4-
20m
A D
eman
d Li
mit
4-20
ma
AN
8J6
, 4-6
5 (4
= lo
op p
ower
) (
0-20
mA
inpu
t)A
IN 8
S
AT
RE
SM
A4-
20m
A S
uppl
y A
ir S
etpo
int
4-20
ma
AN
9J6
, 7-9
8 (7
= lo
op p
ower
) (
0-20
mA
inpu
t)A
IN 7
O
AQ
Out
side
Air
CO
2 S
enso
r4-
20 m
a A
N10
J6, 1
0-12
11 (
10 =
loop
pow
er)
(0-
20m
A in
put)
AIN
6
N
ot u
sed
AN
1J5
, 1-2
1(t
herm
isto
r, oh
ms)
AIN
5
N
ot u
sed
AN
2J5
, 3-4
3(t
herm
isto
r, oh
ms)
AIN
4
N
ot u
sed
AN
3J5
, 5-6
5(t
herm
isto
r, oh
ms)
AIN
3
N
ot u
sed
AN
4J5
, 7-8
7(t
herm
isto
r, oh
ms)
AIN
2
N
ot u
sed
AN
5J5
, 9-1
09
(the
rmis
tor,
ohm
s)A
IN1
Not
use
d A
N6
J5, 1
1-12
11(t
herm
isto
r, oh
ms)
AIN
0
![Page 8: Wiring Diagrams - utcccs-cdn. · PDF file2 LEGEND AND NOTES FOR FIG. 1-16 LEGEND BP — Building Pressure C—Contactor, Compressor CAP — Capacitor CB — Circuit Breaker CCB —](https://reader036.vdocument.in/reader036/viewer/2022081802/5a7071e97f8b9ab6538beee6/html5/thumbnails/8.jpg)
8
CO
NT
RO
LS O
PT
ION
BO
AR
D
Fig
. 1 —
Co
mp
on
ent
Arr
ang
emen
t —
48/
50A
J,A
K,A
W,A
Y02
0-03
5 U
nit
s
![Page 9: Wiring Diagrams - utcccs-cdn. · PDF file2 LEGEND AND NOTES FOR FIG. 1-16 LEGEND BP — Building Pressure C—Contactor, Compressor CAP — Capacitor CB — Circuit Breaker CCB —](https://reader036.vdocument.in/reader036/viewer/2022081802/5a7071e97f8b9ab6538beee6/html5/thumbnails/9.jpg)
9
CO
NT
RO
LS O
PT
ION
BO
AR
D
Fig
. 2 —
Co
mp
on
ent
Arr
ang
emen
t —
48/
50A
J,A
K,A
W,A
Y04
0-06
0 U
nit
s
![Page 10: Wiring Diagrams - utcccs-cdn. · PDF file2 LEGEND AND NOTES FOR FIG. 1-16 LEGEND BP — Building Pressure C—Contactor, Compressor CAP — Capacitor CB — Circuit Breaker CCB —](https://reader036.vdocument.in/reader036/viewer/2022081802/5a7071e97f8b9ab6538beee6/html5/thumbnails/10.jpg)
10
Fig
. 3 —
Po
wer
Sch
emat
ic —
48/
50A
J,A
K,A
W,A
Y02
0-02
7 U
nit
s
![Page 11: Wiring Diagrams - utcccs-cdn. · PDF file2 LEGEND AND NOTES FOR FIG. 1-16 LEGEND BP — Building Pressure C—Contactor, Compressor CAP — Capacitor CB — Circuit Breaker CCB —](https://reader036.vdocument.in/reader036/viewer/2022081802/5a7071e97f8b9ab6538beee6/html5/thumbnails/11.jpg)
11
Fig
. 4 —
Po
wer
Sch
emat
ic —
48/
50A
J,A
K,A
W,A
Y03
0-03
5 U
nit
s
![Page 12: Wiring Diagrams - utcccs-cdn. · PDF file2 LEGEND AND NOTES FOR FIG. 1-16 LEGEND BP — Building Pressure C—Contactor, Compressor CAP — Capacitor CB — Circuit Breaker CCB —](https://reader036.vdocument.in/reader036/viewer/2022081802/5a7071e97f8b9ab6538beee6/html5/thumbnails/12.jpg)
12
Fig
. 5 —
Po
wer
Sch
emat
ic —
48/
50A
J,A
K,A
W,A
Y04
0 U
nit
s
![Page 13: Wiring Diagrams - utcccs-cdn. · PDF file2 LEGEND AND NOTES FOR FIG. 1-16 LEGEND BP — Building Pressure C—Contactor, Compressor CAP — Capacitor CB — Circuit Breaker CCB —](https://reader036.vdocument.in/reader036/viewer/2022081802/5a7071e97f8b9ab6538beee6/html5/thumbnails/13.jpg)
13
Fig
. 6 —
Po
wer
Sch
emat
ic —
48/
50A
J,A
K,A
W,A
Y05
0 U
nit
s
![Page 14: Wiring Diagrams - utcccs-cdn. · PDF file2 LEGEND AND NOTES FOR FIG. 1-16 LEGEND BP — Building Pressure C—Contactor, Compressor CAP — Capacitor CB — Circuit Breaker CCB —](https://reader036.vdocument.in/reader036/viewer/2022081802/5a7071e97f8b9ab6538beee6/html5/thumbnails/14.jpg)
14
Fig
. 7 —
Po
wer
Sch
emat
ic —
48/
50A
J,A
K,A
W,A
Y06
0 U
nit
s
![Page 15: Wiring Diagrams - utcccs-cdn. · PDF file2 LEGEND AND NOTES FOR FIG. 1-16 LEGEND BP — Building Pressure C—Contactor, Compressor CAP — Capacitor CB — Circuit Breaker CCB —](https://reader036.vdocument.in/reader036/viewer/2022081802/5a7071e97f8b9ab6538beee6/html5/thumbnails/15.jpg)
15
Fig
. 8 —
Mai
n C
on
tro
l Bo
x C
ircu
it —
48/
50A
J,A
K,A
W,A
Y02
0-06
0 U
nit
s
![Page 16: Wiring Diagrams - utcccs-cdn. · PDF file2 LEGEND AND NOTES FOR FIG. 1-16 LEGEND BP — Building Pressure C—Contactor, Compressor CAP — Capacitor CB — Circuit Breaker CCB —](https://reader036.vdocument.in/reader036/viewer/2022081802/5a7071e97f8b9ab6538beee6/html5/thumbnails/16.jpg)
16
Fig
. 9 —
Au
xilia
ry C
on
tro
l Bo
x W
irin
g —
48/
50A
J,A
K,A
W,A
Y02
0-06
0 U
nit
s
![Page 17: Wiring Diagrams - utcccs-cdn. · PDF file2 LEGEND AND NOTES FOR FIG. 1-16 LEGEND BP — Building Pressure C—Contactor, Compressor CAP — Capacitor CB — Circuit Breaker CCB —](https://reader036.vdocument.in/reader036/viewer/2022081802/5a7071e97f8b9ab6538beee6/html5/thumbnails/17.jpg)
17
Fig
. 10
— A
cces
sory
Bo
ard
Wir
ing
— 4
8/50
AJ,
AK
,AW
,AY
020-
060
Un
its
![Page 18: Wiring Diagrams - utcccs-cdn. · PDF file2 LEGEND AND NOTES FOR FIG. 1-16 LEGEND BP — Building Pressure C—Contactor, Compressor CAP — Capacitor CB — Circuit Breaker CCB —](https://reader036.vdocument.in/reader036/viewer/2022081802/5a7071e97f8b9ab6538beee6/html5/thumbnails/18.jpg)
18
Fig
. 11
— G
as H
eat
Co
ntr
ol C
ircu
it (
2-S
tag
e H
eat)
— 4
8/50
AJ,
AK
,AW
,AY
020-
050
Un
its
![Page 19: Wiring Diagrams - utcccs-cdn. · PDF file2 LEGEND AND NOTES FOR FIG. 1-16 LEGEND BP — Building Pressure C—Contactor, Compressor CAP — Capacitor CB — Circuit Breaker CCB —](https://reader036.vdocument.in/reader036/viewer/2022081802/5a7071e97f8b9ab6538beee6/html5/thumbnails/19.jpg)
19
Fig
. 12
— G
as H
eat
Co
ntr
ol C
ircu
it (
2-S
tag
e H
eat)
— 4
8/50
AJ,
AK
,AW
,AY
060
Un
its
![Page 20: Wiring Diagrams - utcccs-cdn. · PDF file2 LEGEND AND NOTES FOR FIG. 1-16 LEGEND BP — Building Pressure C—Contactor, Compressor CAP — Capacitor CB — Circuit Breaker CCB —](https://reader036.vdocument.in/reader036/viewer/2022081802/5a7071e97f8b9ab6538beee6/html5/thumbnails/20.jpg)
20
Fig
. 13
— G
as H
eat
Co
ntr
ol C
ircu
it (
Sta
ged
Gas
Hea
t) —
48/
50A
J,A
W02
0-05
0 U
nit
s
![Page 21: Wiring Diagrams - utcccs-cdn. · PDF file2 LEGEND AND NOTES FOR FIG. 1-16 LEGEND BP — Building Pressure C—Contactor, Compressor CAP — Capacitor CB — Circuit Breaker CCB —](https://reader036.vdocument.in/reader036/viewer/2022081802/5a7071e97f8b9ab6538beee6/html5/thumbnails/21.jpg)
21
Fig
. 14
— G
as H
eat
Co
ntr
ol C
ircu
it (
Sta
ged
Gas
Hea
t) —
48A
J,A
W06
0 U
nit
s
![Page 22: Wiring Diagrams - utcccs-cdn. · PDF file2 LEGEND AND NOTES FOR FIG. 1-16 LEGEND BP — Building Pressure C—Contactor, Compressor CAP — Capacitor CB — Circuit Breaker CCB —](https://reader036.vdocument.in/reader036/viewer/2022081802/5a7071e97f8b9ab6538beee6/html5/thumbnails/22.jpg)
22
Fig
. 15
— E
lect
ric
Hea
t C
on
tro
l Cir
cuit
— 5
0AJ,
AK
,AW
,AY
020-
050
Un
its
![Page 23: Wiring Diagrams - utcccs-cdn. · PDF file2 LEGEND AND NOTES FOR FIG. 1-16 LEGEND BP — Building Pressure C—Contactor, Compressor CAP — Capacitor CB — Circuit Breaker CCB —](https://reader036.vdocument.in/reader036/viewer/2022081802/5a7071e97f8b9ab6538beee6/html5/thumbnails/23.jpg)
23
Fig
. 16
— E
lect
ric
Hea
t C
on
tro
l Cir
cuit
— 5
0AJ,
AK
,AW
,AY
060
Un
its
![Page 24: Wiring Diagrams - utcccs-cdn. · PDF file2 LEGEND AND NOTES FOR FIG. 1-16 LEGEND BP — Building Pressure C—Contactor, Compressor CAP — Capacitor CB — Circuit Breaker CCB —](https://reader036.vdocument.in/reader036/viewer/2022081802/5a7071e97f8b9ab6538beee6/html5/thumbnails/24.jpg)
24
BLK
23
GRNDPA
RED
BLK
GRN
RED
A
B
6 5 2
L1
L1
L1
T1
T2
T3
SEE NOTE 1
1 2
BLK
YEL
BLU
FUSE
FUSE
FUSE
MM-FCCB
22
2111
12
13
BLK
RED
BLU
1
2
3
OFM2
FR
2 4
FR1 3
C1 C2OFC1
BLK
GRN
RED
BLK
GRN
RED
DPA
MM-F
FUSE
FUSE
FUSE
BLK
YEL
BLU
CCB
11
12
13
21
22
23
2 4
FR
1 2SEE NOTE 1
6 5 2
L1
L1
L1
T1
T2
T3
MM
BLK
RED
BLU
BLK
RED
BLU
1
2
3
1
2
3
OFM1
OFM2
FR1 3
C1 C2OFC1
Fig. 17 — Motormaster V Accessory Wiring — 48/50AJ,AK,AW,AY020-035 Units
NOTES:1. Motormaster® control to be wired directly to CCB
circuit breaker and the OFC1 contactor should beremoved from the wiring.
2. Connect Start relay FR to the following terminals:230-3-60 TB1-TB2460-3-60 TB1-TB2575-3-60 TB1-TB2208-3-60 TB13A-TB2
3. Add FR relay in parallel with OFC1 (see Fig. 8).
Fig. 18 — Motormaster V Accessory Wiring — 48/50AJ,AK,AW,AY040-060 Units
NOTES:1. Motormaster control to be wired directly to CCB cir-
cuit breaker and the OFC1 contactor should beremoved from the wiring.
2. Connect Start relay FR to the following terminals:230-3-60 TB1-TB2460-3-60 TB1-TB2575-3-60 TB1-TB2208-3-60 TB13A-TB2
3. Add FR relay in parallel with OFC1 (see Fig. 8).
LEGENDCCB — Control Circuit BreakerDPA — Duct Pressure TransducerFR — Fan RelayMM — Motormaster VMM-F — Motormaster V FusesOFC — Outdoor-Fan ContactorOFM — Outdoor-Fan MotorTB — Terminal Block
LEGENDCCB — Control Circuit BreakerDPA — Duct Pressure TransducerFR — Fan RelayMM — Motormaster VMM-F — Motormaster V FusesOFC — Outdoor-Fan ContactorOFM — Outdoor-Fan MotorTB — Terminal Block
![Page 25: Wiring Diagrams - utcccs-cdn. · PDF file2 LEGEND AND NOTES FOR FIG. 1-16 LEGEND BP — Building Pressure C—Contactor, Compressor CAP — Capacitor CB — Circuit Breaker CCB —](https://reader036.vdocument.in/reader036/viewer/2022081802/5a7071e97f8b9ab6538beee6/html5/thumbnails/25.jpg)
25
SPACE TEMPERATURE AVERAGING — 4 SENSOR APPLICATION
SPACE TEMPERATURE AVERAGING — 9 SENSOR APPLICATION
Fig. 19 — Space Temperature Averaging Wiring
![Page 26: Wiring Diagrams - utcccs-cdn. · PDF file2 LEGEND AND NOTES FOR FIG. 1-16 LEGEND BP — Building Pressure C—Contactor, Compressor CAP — Capacitor CB — Circuit Breaker CCB —](https://reader036.vdocument.in/reader036/viewer/2022081802/5a7071e97f8b9ab6538beee6/html5/thumbnails/26.jpg)
26
36 kW, 208/230 V, SIZES 020-05054 kW, 208/230 V, SIZE 060
72 kW, 208/230 V, SIZES 020-050108 kW, 208/230 V, SIZE 060
36 kW, 460 V, SIZES 020-05024 kW, 380 V, SIZES 020-05027 kW, 400 V, SIZES 020-050
54 kW, 460 V, SIZE 06037 kW, 380 V, SIZE 06041 kW, 400 V, SIZE 060
36 kW, 575 V, SIZES 020-05054 kW, 575 V, SIZE 060
72 kW, 575 V, SIZES 020-050108 kW, 575 V, SIZE 060
Fig. 20 — Electric Heater Power Diagrams
72 kW, 460 V, SIZES 020-05049 kW, 380 V, SIZES 020-05054 kW, 400 V, SIZES 020-050
108 kW, 460 V, SIZE 06074 kW, 380 V, SIZE 06082 kW, 400 V, SIZE 060
![Page 27: Wiring Diagrams - utcccs-cdn. · PDF file2 LEGEND AND NOTES FOR FIG. 1-16 LEGEND BP — Building Pressure C—Contactor, Compressor CAP — Capacitor CB — Circuit Breaker CCB —](https://reader036.vdocument.in/reader036/viewer/2022081802/5a7071e97f8b9ab6538beee6/html5/thumbnails/27.jpg)
![Page 28: Wiring Diagrams - utcccs-cdn. · PDF file2 LEGEND AND NOTES FOR FIG. 1-16 LEGEND BP — Building Pressure C—Contactor, Compressor CAP — Capacitor CB — Circuit Breaker CCB —](https://reader036.vdocument.in/reader036/viewer/2022081802/5a7071e97f8b9ab6538beee6/html5/thumbnails/28.jpg)
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.PC 111 Catalog No. 534-80145 Printed in U.S.A. Form 48/50A-1W Pg 28 2-03 Replaces: NewBook 1 1
Tab 1a 1b
Copyright 2003 Carrier Corporation