Honeywell Ret97c Wiring Diagram. If you have a system that both heats and cools your house you need a more complex thermostat with more wire terminals and if your system incorporates a heat pump you need. If you have a c wire place it into the c terminal on your wall plate.
Id rts 2010 0h8676. Lets take a look at the g wire. 4 wire honeywell thermostat rth111b wiring diagram wiring diagram is a simplified normal pictorial representation of an electrical.
The rmec7890 system consists of a relay module subbase.
Label wires and remove your old thermostat 2. To protect your equipment switch off the power. Parts manual ev unit ev engine gth 990999 hsb 2010 0h4654. Our wiring diagrams section details a selection of key wiring diagrams focused around typical sundial s and y plans.