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Old 07-17-2015, 11:03 AM   #1
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Join Date: Nov 2011
Location: Chenango County NY
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Thermostat Change

Hi All: I am looking for the proper wiring diagram to change the Coleman Mach thermostat to the Honeywell RTHL 221B (1) week programmable. I found the RTH111 but that unit is not programmable. Has anyone made this change?
I know I need to add a high low fan switch. This unit also has a furnace type setting. I assume it should be set on Gas or oil.

RTHL221B | 1-Week Programmable Thermostat

Thanks; Frank
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