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W8835A ENVIRAZONE PANEL
Wiring Dampers
Single Transformer Heating/Cooling
systems require a jumper to be installed
connecting R
and R
H
C
(factory installed).
HVAC Equipment
HP Fault Common
Heating Transformer
24 VAC
Equipment
Cooling Transformer
Emergency Heat Relay
Auxiliary Heat
Compressor
Reversing Valve (Cooling/Heating)
Fig. 4. Wiring single-stage heat pump with separate
Auxiliary and Emergency Heat.
Single Transformer Heating/Cooling
systems require a jumper to be installed
connecting R
and R
H
C
(factory installed).
HVAC Equipment
HP Fault Common
Heating Transformer
24 VAC
Equipment
Cooling Transformer
Auxiliary Heat
Compressor
Reversing Valve (Cooling/Heating)
1
FIELD INSTALLED JUMPER
Fig. 5. Wiring single-stage heat pump with Auxiliary Heat.
68-0258ES-1
HP Fault
L
C
R
H
R
C
W
/E
1
W
2
W
/AUX
3
Y
1
Y
2
Fan Relay
G
O/B
M23065
HP Fault
L
C
R
H
R
C
W
/E
1
1
W
2
W
/AUX
3
Y
1
Y
2
Fan Relay
G
O/B
M23066
Single Transformer Heating/Cooling
systems require a jumper to be installed
connecting R
H
(factory installed).
HVAC Equipment
Heating Transformer
24 VAC
Equipment
Cooling Transformer
Emergency Heat Relay
Auxiliary Heat Relay
First Stage Compressor
Second Stage Compressor
Reversing Valve (Cooling/Heating)
Fig. 6. Wiring two-stage heat pump with separate Auxiliary
Single Transformer Heating/Cooling
systems require a jumper to be installed
connecting R
H
(factory installed).
HVAC Equipment
Heating Transformer
24 VAC
Equipment
Cooling Transformer
Auxiliary Heat Relay
First Stage Compressor
Second Stage Compressor
Reversing Valve (Cooling/Heating)
Fig. 7. Wiring two-stage heat pump with Auxiliary Heat.
6
and R
C
HP Fault
L
HP Fault Common
C
R
H
R
C
W
1
W
2
W
3
Y
1
Y
2
Fan Relay
G
O/B
Heat.
and R
C
HP Fault
L
HP Fault Common
C
R
H
R
C
W
1
W
1
2
W
3
Y
1
Y
2
Fan Relay
G
O/B
1
FIELD INSTALLED JUMPER
/E
/AUX
M20599
/E
/AUX
M23067
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