Installation
Power
The thermostat requires 24VAC power from the HVAC system it is controlling. Connect the 24VAC Common (typically the Blue wire/terminal) and 24VAC R (typically the Red wire/terminal) from the HVAC system to the thermostats HVAC System terminal block 24VCom and 24V RH or 24V RC terminals (the RH and RC terminals are default tied together)
Common or Split Transformer Systems
Most HVAC systems have a common heating and cooling transformer. A jumper wire is connected to tie the RH and RC inputs together for this configuration. If you have a system with separate heating and cooling transformers, you will need to separate the RH and RC inputs by cutting the jumper on the PCB.
When wiring split systems, wire the heating systems 24VAC R (red wire) to the thermostat’s RH terminal, and wire the cooling systems 24VAC R to the thermostat’s RC terminal. Also wire the cooling systems 24VAC Com to the thermostat’s 24VAC Com terminals.
Note: Do not split RC/RH for Heat Pump systems!
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