Wiring; Wiring To Heat Pump; Wiring To Or Model 8140Nc Fresh Air Ventilator - Aprilaire 8126 Series Installation And Operation Manual

WIRING

Disconnect power to the HVAC system to prevent electrical shorts while wiring .
1. Run a 2-conductor cable from the control to the outdoor temperature sensor (if installed) and
wire to the controller ODT terminals .
2. Run an 8-conductor thermostat cable from the control to the HVAC equipment . Wire the
controller to the HVAC equipment in accordance with FIGURE 1 or FIGURE 2 diagram below .
Contact customer service if wiring assistance is needed for other equipment configurations .
3. Run a 2-conductor cable from the control to either the damper in Model 8126X installations or
to the Model 8140NC Fresh Air Ventilator and wire according to FIGURE 3 or FIGURE 4 .
FIGURE 1 – WIRING TO FURNACE
THERMOSTAT
R C Y W G
WIRE NUT
SUPPLIED)
R C Y W G
FURNACE
R & C = 24 VAC
Y = COOLING
W = HEAT
GS = FAN INPUT
GH = FAN OUTPUT
MODEL 8120X DIGITAL VENTILATION CONTROL
R
(FIELD C
Y
W
O
GS
GH
TEMPERATURE
10
FIGURE 2 – WIRING TO HEAT PUMP
R & C = 24 VAC
Y = COMPRESSOR
W1 = 1st STAGE AUX. HEAT
O = REV. VALVE, COOLING
GS = FAN INPUT
GH = FAN OUTPUT
ODT FIGURE 3 – WIRING TO MODEL 8140NC FRESH AIR VENTILATOR
VENT
OUTDOOR
SENSOR
HEAT PUMP THERMOSTAT
MODEL 8120X DIGITAL VENTILATION CONTROL
R C Y W1 O G
WIRE NUT
(FIELD
SUPPLIED)
R C Y W O G
GH
HEAT PUMP
MODEL 8140NC
VENTILATOR
VENT
11
R
ODT
C
Y
W
O
GS
VENT
OUTDOOR
TEMPERATURE
SENSOR