Basic Oil Furnace Thermostat Wiring. Beckett Oil Furnace Wiring Diagram - Collections Of File Info Oil Furnace thermostat Wiring Diagram Oil Furnace Wiring. Yellow The yellow wire connects to your compressor.
Low-voltage thermostats including modern wifi thermostats run on a small transformer that converts 120-volt line voltage to 12 or 24-volt current that runs the thermostat. Most two-wire thermostats wire have a red and white wire encased in a brown insulated coating. It terminates at your air handler or furnace.
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.
A low-voltage thermostat typically runs on 24 volts of electricity and is powered by a step-down transformer wired to a standard 120-volt household circuit. Therefore you will use the following color code for simple thermostat wiring. The basic Heat AC System thermostat typically utilizes only 5 terminals. Yellow The yellow wire connects to your compressor.