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07-04-09, 03:47 PM
Replies: 3
Views: 2,688
Posted By TNtonyfan

Switching to Honeywell RTH7500 and have extra wire

I have a TRANE XL1200 heat pump model TWX736A100A2, inside air handler says "TRANE Plus Air Handler". I am replacing a BAYSTAT240 thermostat model 3AAT80B1A1 with a Honeywell RTH7500. I have 10 wires...
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