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Fig. 53 — 42SG,SH,SJ,VA,VB,VC,VE,VF 2-Pipe Heating and Cooling with
Automatic Changeover — Unit-Mounted Thermostat (Line Voltage)
a42-4060
120-V WHT ALL OTHERS BLK
NEC CLASS 1 WIRING
UNIT MOUNTED
J BOX
EQUIPMENT
GROUND
L2 or N
L1
THERMOSTAT PART # 702893-36
MED W/RED
HI W/ORG
L1 BLK
LOW W/BRN
HEAT RED
COOL BLU
PUR
ORG
L2 OR N YEL
VALVE
WHT
BLK
REMOTE DEVICE BOX
*WHT
AQUASTAT
BLK
BLU
RED
2
1
3
2
1
BLOWER
MOTOR
H BLK
COM
WHT
BLUM
REDL
4
3
2
1
PUR
BRN
BLK
ONLY 120V WHT/ALL OTHERS BLK
RED
BLU
BLK
*WHT
NEC CLASS 1 WIRING
RISE
Fig. 54 — 42C,S,V and 42D (600-1000) 2-Pipe Heating and Cooling with Automatic Changeover —
Remote/Wall-Mounted Thermostat (Line Voltage)