76
SCHEMATICS
Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
W
ARNIN
G
PTH***G*[H/V]***A* (ID MOTOR DC; OD MOTOR 2 SPEED PSC)
Model Starts W ith
PTH074G (00 to 35)
1250
M3
1000
M4
PTH093G (00 to 35)
1200
M3
1000
M4
PTH093G 50
1400
M1
1250
M2
PTH094G (00 to 35)
1200
M3
1000
M4
PTH094G 50
1400
M1
1250
M2
PTH123G (00 to 35)
1250
M2
1000
M4
PTH123G 50
1400
M1
1250
M2
PTH124G (00 to 35)
1250
M2
1000
M4
PTH124G 50
1400
M1
1250
M2
Indoor Motor Speed Selection
High Speed
VSTM Black
Low Speed
VSTM Red
VSM
EM
EVAP
MOTOR
LINE 1
HEATER 1
HEATER 2
LINE 2
COMPRESSOR
R
COM
GND
230/265
TO MOTOR
VSTM ID
R 485
S
FAN
HIGH
FAN
LOW
REV
VALVE
OR
BR
RD
PK
PK
VT
GY
PK
RD
6
WH
FOR A HEAT PUMP
THERMOSTAT USED
ON A STRAIGHT
COOL UNIT
GL - LOW SPEED
GH - HIGH SPEED
7
CM
COMP
EM
FC
F
HPS
HTR
RCCF
RVC
TR
VSM
VSTM
R
OUTDOOR FAN MOTOR
COMPRESSOR
EVAPORATOR MOTOR
FAN CAPACITOR
FUSE
HIGH PRESSURE SWITCH
HEATER ELEMENT
RELAY
RUN CAPACITOR
FOR COMPRESSOR AND FAN
REVERSING VALVE
TRANSFORMER
VARIABLE SPEED MOTOR
VARIABLE SPEED TERMINAL BOARD
HYDRONIC/
POWER VENT