and another stat wiring question (RTH7500)... - http://www.hvacmechanic.com/ Forums
Original message
| cmurphy
 |  "and another stat wiring question (RTH7500)..."
, posted Sun 6 Jul 17:25  
Did some searches here and I probably don't know enough to know what I'm searching for.
I have a Trane air handler and a Trane XE1000 heat pump. I want to change my current Honeywell T8011R thermostat with a new honeywell RTH7500.
The wiring has almost a 1 to 1 relationship except for one wire - W1.
Here's a photo of my current wiring setup on the 8011R. Things to notice: there is a small orange wire jumping W2 and E, and there is a barely visible brass jumper from W1 to Y: http://tinyurl.com/5txmtd
As I understand, I will wire the new honeywell as shows in this picture (with AUX and E jumped and RC and R already jumped by the factory): http://tinyurl.com/5ff5bf
My question is - what about my old W1 which is supposed to be jumped with Y?
According to the wiring diagram in the old stat's user manual: http://tinyurl.com/6f23hn - W1 and Y are jumped because I do not have separate heating compressor contractors - but I don't know what that really means, or what it means for the new RTH7500.
Can anyone help me on what the old W1 would map to?
Thank you!
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Replies:
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| | Houston204
| "Re(2):and another stat wiring question (RTH75" , posted Sun 6 Jul 17:39
What is that, an 8 megapixel camera? It looks like a poster image.
"Tip of the Day" Remember to remove power first.
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| | cmurphy
| "Re(3):and another stat wiring question (RTH75" , posted Sun 6 Jul 17:47
Thank you thank you thank you. your description makes sense. And nope, just an old 5mp camera. I totally didn't think to put the images inline.
Thank you again. I'll get to hookup soon.
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