Original message
| kkkdalmation
 |  "Honeywell RTH7500 wiring"
, posted Fri 18 Jul 13:17:  
I have old thermostat wiring as follows
W2 - light brown
G - Pruple
R - Red
X - Blue
O - Orange
Y - Yellow
How can I connect to the new Honeywell RTH7500?
Thanks
Kevin
[this message was edited by kkkdalmation on Fri 18 Jul 13:17] |
| Replies:
|
| Houston204
| "Re(1):Honeywell RTH7500 wiring" , posted Fri 18 Jul 19:08:
X has different functions with different stats. It could be C (common) or E (emergency heat).
Post the model number of the old stat. Possibly Q674? ???? or remove the panel to your fancoil and verify what your X wire connects to.
"Tip of the Day" Remember to remove power first.
[this message was edited by Houston204 on Sat 19 Jul 00:03] |
|
|
