Wall Furnace Gas Valve Wiring

When the furnace gets too hot and reaches the temperature the limit stop is set to the limit relay will open and disconnect the w on the thermostat from the th on the gas valve which prevents the thermostat from turning the gas valve on effectively preventing your furnace from heating until the limit control relay detects the temperature has dropped low enough and closes the limit relay.

Wall furnace gas valve wiring. Make sure all connections are correct and connector stems are not touching. You will need the model and the serial number of your specific furnace. 06 1 2015 natural gas w255g 1 for wall thermostat units see wiring section for thermostat connections. How the millivolt gas valve and 750mv thermopile work.

Read these instructions thoroughly before installing servicing or using the appliance. Hvac williams wall furnace easy call. Repair on a williams wall furnace. This is a gas fired gravity vented wall furnace that will operate safely and provide an efficient source of heat when installed operated and maintained as recommended in these installation and operating instructions.

I go over how it is wired what voltages you should be reading while. Variety of williams wall furnace wiring diagram. It reveals the parts of the circuit as simplified shapes and also the power as well as signal links in between the tools. If you do not understand any part of these.

Gas fired vented wall furnace installation and operating instructions p n 84502 rev.