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Quick Installation Guide
6
Conventional Systems (Alternate Wiring)
Do not use C, C1 or X wire. Do not use B wire if you already
have O wire. Wrap bare end of wire with electrical tape.
This thermostat cannot be used if your old thermostat had
any two of the following wires: R, RC, RH, 4 and V.
Place a jumper (piece of wire) between Y and W/AUX if you
are using a heat pump without auxiliary/backup heat.
r
Connect Wires (cont’d)
6.
69-2380ES-01 (RTH2510 7-day QIG) ENG USA.fm Page 6 Tuesday, October 20, 2009 10:16 AM