Drill a hole in the drywall and use a fishtape to feed the wire from the furnace through the hole in the wall. It reveals the parts of the circuit as simplified shapes and also the power as well as signal links between the tools.
A wiring diagram is a simplified standard pictorial representation of an electrical circuit.
Furnace thermostat wiring diagram. Variety of goodman furnace thermostat wiring diagram. The wire will run through a dedicated opening on the side of the furnace into the control panel. Furthermore the power for both the condenser and the air handlerfurnace.
The line voltage feeding the furnace to operate the fan blower motor is transformed down to a safer level of 24 volts the gas control valve needs 24 volts to open and after making a series loop through at least one safety device the most basic and mandatory one is an over temperature shut down. Thermostat wiring colors code high performance hvac thermostat terminal designations before proceeding we highly advise that you turn the power off at the circuit breaker. Terminal r or terminal rh for the red wire.
When the red wire is disconnected from w the furnace should turn off. Run the thermostat wire from your furnace to the location where your thermostat will hang. Thermostat wiring colors and terminals.
For example if the red wire is connected to w on the thermostat the furnace should turn on. Heating only thermostat wiring diagrams if you only have a furnace such as a gas furnace oil furnace electric furnace or a boiler then you will use the following for simple thermostat wiring. This originates from the transformer.
Furnace thermostat wiring diagram terminal letters on a thermostat and what they control the hot wire 24 volts usually red from the transformer is the main power wire to turn on or off a furnace components. Goodman furnace thermostat wiring diagram. Both the furnace control board and the thermostat will usually have the same terminal letters.
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