Honeywell RTH8500D Use and Care Manual download pdf (Page 15)

15 69-1725-1

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.

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.

M22206

WALLPLATE

METAL JUMPER WIRE

SCREW TERMINALS

TERMINAL BLOCK

LETTER

DESIGNATIONS

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 63 64

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Honeywell RTH8500D Use and Care Manual Page 15