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036-21300-002-A-0905
24 Unitary Products Group
FIGURE 10 - FIELD WIRING FOR POWER SUPPLY
COOLING ONLY UNITS AND UNITS WITH
STEAM OR HOT WATER COIL ACCESSORY
T
ERMINALS ON
SUPPLY AIR
BLOWER MOTOR
CONTACTOR
10M
GROUND
SCREW
POWER WIRING,
DESCONNECT SWITCH
AND FUSING TO BE
SUPPLIED BY FIELD
LINE VOLTAGE
POWER SUPPLY
*Not required on 060 (1-Phase
only) All other units are 3-Phase.
TERMINALS
ON FUSE HOLDER
IN ELECTRIC HEAR
CONTROL BOX
GROUND LUG
IN ELECTRIC HEAT
CONTROL BOX
POWER WIRING,
DESCONNECT
SWITCH
AND FUSING
(OR CIRCUIT
BREAKER)
TO BE SUPPLIED
BY FIELD
3-PHASE
LINE VOLTAGE
POWER SUPPLY
NOTE: USE COPPER
CONDUCTORS ONLY
WIRE IN ACCORDANCE WITH LOCAL
AND NATIONAL ELECTRICAL CODES
UNITS WITH ELECTRIC HEAT ACCESSORY
FIGURE 11 - COOLING ONLY UNIT
TERMINALS ON
THERMOSTAT 6TH13700724
WITH SUB-BASE 2TB08700124
TERMINAL
BLOCK 4TB
ON BLOWER UNIT
1-STAGE COOLING
24-VOLT
CONTROL
WIRING
TO
COND.
UNIT
RR
Y
Y
G
G
B
TERMINALS ON
THERMOSTAT 6TH04701724
WITH SUB-BASE 2TB04700124
24-VOLT
CONTROL
WIRING
TERMINAL BLOCK 4TB
ON BLOWER UNIT
TO
COND.
UNIT
2-STAGE COOLING FOR HCA180/KEU180**
COOLING ONLY UNITS
RC
Y1
Y2
G
R
Y
O
G
B
FIGURE 12 - UNIT WITH STEAM OR HOT WATER COIL ACCESSORY
24-VOLT CONTROL WIRING
TO
COND.
UNIT
TERMINAL
BLOCK 4TB
ON BLOWER UNI
T
TO HEATER COIL
CONTROL CIRCUIT
TERMINALS ON
THERMOSTAT
6TH04701524
WITH SUB-BASE
2TB04700324
TERMINAL
BLOCK 4TB
ON BLOWER UNIT
TO HEATER COIL
CONTROL CIRCUIT
TERMINALS ON THERMOSTAT 6TH13700724
WITH SUB-BASE 2TB17700324
24-VOLT CONTROL WIRING
1-STAGE COOLING
2-STAGE COOLING FOR HCA180/KEU180**
UNITS WITH STEAM OR HOT WATER COIL ACCESSORY
R
Y
G
W
R
Y
G
B
R
Y1
Y2
G
W
R
Y
O
G
B
TO
COND.
UNIT