Honeywell RTH8500D Owner's Manual - Page 15
Step 7. Connect Wires to New Wallplate
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Step 7. Connect Wires to New Wallplate 1. Match the labeled wires to the letter designations on the wallplate. 2. Select the correct letter designations to follow for your system. If you have a standard heating and/or cooling system, use the CONVENTIONAL letter designations. If you have a heat pump system, use the HEAT PUMP letter designations to wire the new thermostat. WALLPLATE METAL JUMPER WIRE TERMINAL BLOCK SCREW TERMINALS LETTER DESIGNATIONS RC R W Y G C M22206 3. If wires are to be connected to both Rc and R, loosen the Rc and R screw terminals and remove the metal jumper wire. 4. If only one of the terminals, Rc or R, is to be connected, leave the metal jumper wire in place. See table on page 29 to help you determine if you have a CONVENTIONAL or HEAT PUMP system. 15 69-1725-1
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