W8835 ENVIRAZONE PANEL
68-0258—04 6

For dual fuel equipment using heat pump and fossil fuel,

configure the panel as a heat pump and use a fossil fuel kit. Do

not use the dual fuel functionality of the VisionPRO® IAQ.

Wiring HVAC Equipment

Fig. 4. Wiring single-stage heat pump with separate

Auxiliary and Emergency Heat.

Fig. 5. Wiring single-stage heat pump with Auxiliary Heat.

Fig. 6. Wiring two-stage heat pump with separate Auxiliary

Heat.

Fig. 7. Wiring two-stage heat pump with Auxiliary Heat.

M31124
HVAC EQUIPMENT
RH
RC
W1/E
W2
W3/AUX
SINGLE TRANSFORMER HEATING/COOLING
SYSTEMS REQUIRE A JUMPER TO BE
INSTALLED CONNECTING RH AND RC
(FACTORY INSTALLED).
Y1
Y2
G
O/B
HEATING TRANSFORMER
24 VAC
EQUIPMENT COOLING TRANSFORMER
COMPRESSOR
REVERSING VALVE (COOLING/HEATING)
FAN RELAY
C
L
AUXILIARY HEAT
1
1
FIELD INSTALLED JUMPER
M31124
HVAC EQUIPMENT
RH
RC
W1/E
W2
W3/AUX
SINGLE TRANSFORMER HEATING/COOLING
SYSTEMS REQUIRE A JUMPER TO BE
INSTALLED CONNECTING RH AND RC
(FACTORY INSTALLED).
Y1
Y2
G
O/B
HEATING TRANSFORMER
24 VAC
EQUIPMENT COOLING TRANSFORMER
COMPRESSOR
REVERSING VALVE (COOLING/HEATING)
FAN RELAY
C
L
AUXILIARY HEAT
1
1
FIELD INSTALLED JUMPER
M31123
HVAC EQUIPMENT
RH
RC
C
L
W1/E
W2
W3/AUX
SINGLE TRANSFORMER HEATING/COOLING
SYSTEMS REQUIRE A JUMPER TO BE
INSTALLED CONNECTING RH AND RC
(FACTORY INSTALLED).
Y1
Y2
G
O/B
HEATING TRANSFORMER
24 VAC
EQUIPMENT COOLING TRANSFORMER
EMERGENCY HEAT RELAY
AUXILIARY HEAT RELAY
FIRST STAGE COMPRESSOR
REVERSING VALVE (COOLING/HEATING)
FAN RELAY
SECOND STAGE COMPRESSOR
M31125
HVAC EQUIPMENT
RH
RC
C
L
W1/E
W2
W3/AUX
SINGLE TRANSFORMER HEATING/COOLING
SYSTEMS REQUIRE A JUMPER TO BE
INSTALLED CONNECTING RH AND RC
(FACTORY INSTALLED).
Y1
Y2
G
O/B
HEATING TRANSFORMER
24 VAC
EQUIPMENT COOLING TRANSFORMER
AUXILIARY HEAT RELAY
FIRST STAGE COMPRESSOR
REVERSING VALVE (COOLING/HEATING)
FAN RELAY
SECOND STAGE COMPRESSOR
1
1
FIELD INSTALLED JUMPER