23
Line Voltage Wiring
the furnace be supplied from a dedicated branch circuit
containing the correct fuse or circuit breaker for the furnace.
31).
IMPORTANT NOTES
Figure 19
shown in Figure 19
®
thermostat is connected to the
furnace by running 4 wires from the thermostat to terminal
of of an iQ Zone system, refer to
24).
1. Connect the C terminal on the AC unit to the C terminal
on the motor control board.
2. Connect the Y terminal on the AC unit to the Y/Y2_OUT
terminal on the motor control board.
1. Connect the C terminal on the AC unit to the C terminal
on the furnaces motor control board.
2. Connect the Y1 terminal on the AC unit to the Y1_OUT
terminal on the motor control board.
3. Connect the Y2 terminal on the AC unit to the Y/Y2_OUT
terminal on the motor control board.
1. Connect the W2 terminal on the heat pump to the Y1/E
input terminal on the motor control board. See Option
2. Connect the C terminal on the heat pump to the C
terminal on the motor control board.
3. Connect the R terminal on the heat pump to the R
terminal on the motor control board.
4. Connect the Y terminal on the heat pump to the Y/Y2
output terminal on the motor control board.
5. Connect the O terminal on the AC unit to the W/0 output
terminal on the motor control board.
1. Connect the W2 terminal on the heat pump to the Y1/E
input terminal on the motor control board. See Option
2. Connect the C terminal on the heat pump to the C
terminal on the motor control board.
3. Connect the R terminal on the heat pump to the R
terminal on the motor control board.
4. Connect the Y terminal on the heat pump to the Y1
output terminal on the motor control board.
5. Connect the Y2 terminal on the heat pump to the Y/Y2
output terminal on the motor control board.
6. Connect the O terminal on the AC unit to the W/0 output
terminal on the motor control board.
it is recommended that an outdoor temperature sensor
24)
and measures the outdoor temperature
at the unit. The outdoor temperature is displayed on the
main screen of the iQ thermostat and the system switches
between furnace and heat pump based on the outdoor
temperature.
Grounding
WARNING:
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