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I have a gas burner steam heat.
I recently replaced my mercury thermostat with a non programmable Honeywell T87.
The first problem was with the wiring. The old setup had a white wire and a green wire,
the red wire was pushed into the wall. I pulled the red wire out and connected W to W
and R to R but the thermostat would not work unless it was W to W and G to R.
The thermostat works but the heat is very uneven and the radiators are very hot or very cold between cycles. It seems like the room temp has to drop quite a bit before the
thermostat turns on the burner.
I have tried 2 different thermostats and they both work the same way. The old mercury
had an adjustment to anticipate when the unit would turn on/off.
Is this a wiring problem or is the way the new thermostat works?