Original message
| Murphylake
 |  "Honeywell 7500 installation"
, posted Mon 14 Jan 15:28  
I have a Heil thermostat and the wires are not numbered they are only colored. No numbers I can find.
Is there a certain wiring diagram that I can use for this to install my 7500 correctly?
Murphylake
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Replies:
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| Houston204
| "Re(1):Honeywell 7500 installation" , posted Mon 14 Jan 19:40
There should be letters at your thermostat terminals.
Usually see..
G = green (fan)
Y = yellow (compressor)
W = white (heat)
R = red (power)
C (common) varies and will not always be present
If you have a heat pump you will have more wires (like O or B and E). Take special note of these extra wires as the color codes can vary.
Pictures can be posted on this site using www.photobucket.com
upload your photo, left click the IMG Code, right click and paste on your post.
"Tip of the Day" Remember to remove power first.
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| | Murphylake
| "Re(2):Honeywell 7500 installation" , posted Tue 15 Jan 14:27
I do have a Heat Pump. Would it be better to take a picture of the wiring I currently have and send it to you so you can tell me how the wires are suppose to go into the Honeywell?
Murphylake
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| | Houston204
| "Re(3):Honeywell 7500 installation" , posted Tue 15 Jan 20:33
Pictures would be great, as long as there not taken with a camera phone with no flash in a dark hallway.
If you see a Q674? ???? number on your old subbase, try to include that number as well.
"Tip of the Day" Remember to remove power first.
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