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Label wires and remove your old thermostat Install and wire your new thermostat Set your new thermostat to match your heating/cooling system – This thermostat works with virtually all System Types – It is preset for the most common system We are here to help. Call 1-800-468-1502 for wiring assistance before returning the thermostat to the ...

Typically, "Y" on a conventional forced-air furnace with air conditioning corresponds to a Y on the thermostat but is connected by the blue wire, not the yellow wire. Step 4 Label each thermostat wire at the thermostat location with the appropriate terminal letter designation using the labels provided with the Honeywell RTH7500.

Contains all the essential Wiring Diagrams across our range of heating controls. ... FAQ-T6360-Room-Thermostat-Wiring-&-Operation FAQ-Wiring-Diagram-S-Plan-Pump-Overrun- ... The Honeywell Home trademark is used under license from Honeywell International Inc. ...

Wiring Diagram For Honeywell Rth7400 I have a new honeywell thermostat rth i'm installing. the old thermostat is a intertherm 1d the problem is the old thermostat has g,r,y.

1. Match each labeled wire with same letter on new thermostat. 2. Use a screwdriver to loosen screws, insert wires into hole under screw, then tighten screws until wire is secure. 3. If E and Aux do not each have a wire connected, use a small piece of wire to connect them to each other. 4. Push any excess wire back into the wall opening.

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Honeywell Thermostat Rth221 Wiring Diagram involve some pictures that related one another. Find out the most recent pictures of Honeywell Thermostat Rth221 Wiring Diagram here, and also you can receive the picture here simply. Honeywell Thermostat Rth221 Wiring Diagram picture placed ang uploaded by Admin that preserved in our collection.

TIP: If wires interfere when you try to mount the thermostat, push excess wire back into the wall opening. Page 17: Time/Date Settings RTH7400/RTH7500 About your new thermostat Set time/date and restore electrical power Month Year 1. Press to set month, then press NEXT. 2. Press to set day, then press NEXT. 2006 3. Press to set year, then press ...

Hi, I called Honeywell to find out which thermostat I need for my heatpum system. I told them the current wiring on the old thermostat and wa advised to buy the RTH7500 or RTH7400. Here is how I was told to wire it: Old to New Y1 to Y R to R G to G O to O W1 to Aux (jumper from Aux to E) C to...

Page 21 B wire to the C letter designation on the new thermostat. If another wire is already matched to the C, contact Honeywell. If the old thermostat had wires on W1, Y1 and W2, some system modification is required. Call your local heating and cooling contractor for assistance. Page 22 Step 7. Connect Wires to New Wallplate (Cont) 9.