8
009-1593-02
HVAC Wiring
Temperature Sensors
Use the table below to connect the signaling wires from the
HVAC system. Depending on the type of system installed in
your home will determine which wires are connected. In some
installations, only the power wires described in the previous
sections are required.
There are connections for two temperature sensors.
–
RS1
- The main temperature sensor. This sensor is shipped
already pre-installed between terminals
RS1
and
GND
–
RS2
- A remote temperature sensor can be added between
terminals RS2 and GND. No polarity is observed on either
sensor.
TIP!
Refer to the
Making Connections
section above to
ensure a safe and secure connection is made.
O
Relay to control changeover valve on a Heat Pump
G
Fan Relay
Y2
Relay for control of 2nd stage cooling
Y1
Relay for control of 1st stage cooling
W2
Relay for control of 2nd stage heating
W1
Relay for control of 1st stage heating
AUX
OUT
AUX
IN
RS
2
RS
1
GND
GND
R
X-
RX+
GND
1-
WIRE
5V
DC
Remote Sensor
(RS2)
