Rehau PD1 Instructions Manual page 7

air sensor is disabled and an indoor sensor is being used.) Mount
the thermostat in the desired location in an appropriate manner.
———————
STEP FOUR ROUGH IN WIRING
• 18 AWG or similar wire is recommended for all 24 V (ac) wiring.
• All wires are to be stripped to ¼" (6mm) to ensure proper connection to the control.
• Run wires from the 24 V (ac) power to the thermostat. Use a clean power source to ensure proper operation.
• If an auxiliary sensor is used, install the sensor according to the appropriate Data Brochure and run two wires from
the sensor to the thermostat.
• Run wires from the heating and / or cooling device to the thermostat.
——
STEP FIVE WIRING THE THERMOSTAT (Refer to the examples on the following pages.)
24 V (ac) Power
Connect the 24 V (ac) power to the R and C terminals (1 and 2) of the thermostat. This connection provides power to
the microprocessor and display of the thermostat.
Auxiliary Sensors (S1 and S2)
Either an indoor, slab, or remote sensor may be connected to the S1 input. Connect the two wires from the auxiliary
sensor to the Com and S1 terminals (3 and 4).
Heat Relay (PD1 and PD2)
The Heat (1) terminals (5 and 6) are an isolated output. There is no power available on these terminals from the
thermostat. These terminals are to be used as a switch for a 24 V (ac) circuit. This circuit can operate a low current
24 V (ac) device directly or an external relay to enable a line voltage or high current device.
Heat 2 / Cool (PD2)
The Heat 2 / Cool terminals (7 and 8) are an isolated output. There is no power available on these terminals from the
thermostat. This circuit can operate a low current 24 V (ac)
device directly or an external relay to enable a line voltage or
high current device.
——————
STEP SIX
INSTALLING THE FRONT COVER
Align the hinges on the bottom of the front cover with the
bottom of the thermostat-mounting base. Pivot the front cover
around the bottom hinges and push the top against the
mounting base until it snaps firmly in place.
Page 7 of 19