Question about Honeywell Electronic Programmable Heat/Cool Thermostat - CT3300A100 Heater
I just moved to a new home and want to replace the original mercury thermostat with a programmable one.
The original thermostat is a Williamson made by White Rogers, Type 1F36-307. (No manuals to be found) It has 5 terminals with the following color of wires connected. Y - Yellow, R - Red, W - White, G - Green, 4 - Blue.
The new programmable thermostat is a Honeywell - RTH230B with the following terminals. Rh, Rc, W, Y, G.
Are the Y, W and G terminals the same on both thermostats? And does R=Rh and the 4=Rc?
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Posted on Jan 02, 2017
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