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Section 2 WattMaster WHP
2-16 Installation and Wiring
The WHP Controller requires the following electrical connections:
18 Gauge minimum unless otherwise noted.
-24VAC Supply Voltage........................................................................... 2 Conductors
-Communications Loop ...................................... 2 Conductor twisted pair with shield
(WattMaster Cable, Belden #82760 or equivalent)
-Discharge Air Temperature Sensor ..................................(24 ga. Min.) 2 Conductors
-Room Air Temperature Sensor...........(24 ga. Min.) 2 Conductors for standard sensor
3 Conductors for sensors with setpoint adjustment
-Outside Air Temperature Sensor.......................................(24 ga. Min.) 2 Conductors
-WHP Unit Control Wiring .........................................................(24 ga.Min.) 24 VAC
Fan- ON/OFF
Rev Valve-ON/OFF
Compressor-ON/OFF
Heat Pump Reset
Aux. Heating or Cooling
Tip: After making all electrical connections it is advised to unplug all terminal blocks
on the WHP Controller until you are ready to begin the checkout procedure. This
may help to prevent damage if wiring errors occur elsewhere in the system
during installation or start-up.