View Full Version : Very old Wall Furnace
09-01-2012, 11:23 AM
This is 40 year old wall furnace that has been condemned. My question is, if you guys look to the left of the gas valve, you can see a copper coil. Anybody have any idea what this may have been for? It is not connected to anything. Could be be some old temperature limit device?
09-01-2012, 01:54 PM
Is the gas line to the wall furnace ran in copper?
09-01-2012, 11:25 PM
I'm thinking that is a left over coil from a hydraulic thermostat on a gas valve. The coil reacts to temp and the gas valve responds.
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