HVAC
Hi,
I recently bought a Honeywell thermostat RTH7600D to replace an old thermostat (containg a Mercury tube) in my condo.
Heat pump is 20+ years old Climatrol 753-2-18W-10.
The old thermostat is a Kepro 1262-1 (?) and had the following wires connected:
Green wire to G-F
Yellow wire to...