6 | 028-0228-06
November 2015
T
YPICAL APPLICATIONS
VT7656B5X00(X)
2 Heat / 2 Cool / Economizer / With Schedule
VT7652H5X00(X)
Heat pump / Without Schedule
Auxiliary
Heat
W1
System wiring
Jumper J1
Thermostat internal wiring
Compressor
Stage 1
24 VAC
T1
Compressor
Stage 2
Y2
Jumper J1
See note 1
(previous
page)
Fan
G
Y1
RC
C
RH
Remote
Room
Sensor
Field contacts
Reversing
Valve
Digital Input #2
Digital Input #1
Auxiliary
Output
O/B
AU
DI1
DI2
Scom
RS
Remote
Outdoor
Sensor
Remote
Mixed Air
Sensor
MS
OS
Controller Terminals -
VT7652H5x00
Y2
DI1
DI2
AU
Y1
RC
G
O/B
OS
RS
Scom
RH
C
W1
MS
Heat
Stage 2
Cool
Stage 1
System wiring
Thermostat internal wiring
Jumper J1
T1
24 Vac
Cool
Stage 2
Y2
Y1
Jumper J1
See note 1
(previous
page)
Fan
RC
G
C
Heat
Stage 1
W1
RH
W2
Auxiliary
Output
Field contacts
Com
24V
Remote
Outdoor
Sensor
Digital Input #2
Digital Input #1
Remote
Room
Sensor
0-10 Vdc
EC
AU
DI1
DI2
RS
Remote
Mixed Air
Sensor
MS
Scom
OS
Controller Terminals -
VT7656B5x00
Y2
EC
RC
G
Y1
AU
DI1
DI2
W2
MS
W1
RH
C
Scom
RS
OS