7
Unitary Products Group
FIGURE 5 – TYPICAL FIELD WIRING FOR 036 – 060 MODELS
C
Y
R
G
W
Y
R
G
W
*
POWER
CONTROL
FACTORY
POWER WIRING
208/230–3–60
460–3–60
24 VOLT CONTROL WIRING
MINIMUM 18 GA. WIRE
(NEC CLASS 2)
FURNACE OR AIR HANDLER
TERMINAL BLOCK
ROOM THERMOSTAT
GND. LUG
CONTACTOR
TERMINALS
COIL
ALL OUTDOOR WIRING MUST BE WEATHERPROOF.
USE COPPER CONDUCTORS ONLY.
TERMINAL W IS ONLY REQUIRED
ON SYSTEMS WITH HEAT.
*
FIGURE 6 – TYPICAL FIELD WIRING FOR 076 & 090 MODELS WITH AIR HANDLER
POWER
24 VOLT CONTROL
WIRING MINIMUM
18 GA. WIRE
(NEC CLASS 2)
FACTORY
POWER WIRING
208/230–3–60
460–3–60
AIR HANDLER
TERMINAL BLOCK (4TB)
TYPICAL
THERMOSTAT
GND. LUG
CONTACTOR 1
TERMINALS
ALL OUTDOOR WIRING MUST BE WEATHERPROOF.
USE COPPER CONDUCTORS ONLY.
JUNCTION BOX
R B Y O W X 53 G 60 66
R
G
OUTDOOR
UNIT
RED:
24 VAC
BROWN:
COMMON
YELLOW:
1ST. STAGE COOLING
ORANGE: 2ND. STAGE COOLING
RED
YEL
BRN
ORG
090 ONLY
Y
R AND Y FIELD WIRING CONNECTED TO
THESE DUMMY TERMINALS ON 4TB CAN BE
ROUTED DIRECTLY FROM THE OUTDOOR
UNIT TO THE THERMOSTAT IF DESIRED.
FIGURE 7 – TYPICAL FIELD WIRING FOR TWO STAGE 090 MODEL WITH AIR HANDLER
POWER
24 VOLT CONTROL
WIRING MINIMUM
18 GA. WIRE
(NEC CLASS 2)
FACTORY
POWER WIRING
208/230–3–60
460–3–60
AIR HANDLER
TERMINAL BLOCK (4TB)
TYPICAL
THERMOSTAT
GND. LUG
CONTACTOR 1
TERMINALS
ALL OUTDOOR WIRING MUST BE WEATHERPROOF.
USE COPPER CONDUCTORS ONLY.
JUNCTION BOX
R G
OUTDOOR
UNIT
RED:
24 VAC
BROWN:
COMMON
YELLOW:
1ST. STAGE COOLING
ORANGE: 2ND. STAGE COOLING
RED
YEL
BRN
ORG
Y1 Y2
R B Y O W X 53 G 60 66
