Viconics VT7600 Installation Guide (First Release 1000 Series) - Manual (Page 5)

5
Detailed wiring diagrams for selected models
VT7656B1000
2 Heat / 2 Cool / Economizer / Programmable
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
VT7652H1000
Heat pump / Programmable
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
Thermostat Terminals - VT7652H1000
Y2
DI1 DI2 AU
Y1 RC G
O/B
OS RS Scom
RH
C
W1
MS
Thermostat Terminals -VT7656B1000
Y2
EC
RC G Y1
AU DI1 DI2
W2
MS
W1 RH
C
Scom RS OS