T Stat Wire Diagram

Heat pump thermostat wiring a typical wire color and terminal diagram.

T stat wire diagram.

This article explains just what wire at a room thermostat actually controls. Thermostat wiring and wire color chart thermostat wiring colors code. It is a red wire and comes from the transformer usually located in the air handler for split systems but you may find the transformer in the condensing unit. Knowing what each thermostat wire does can help in wiring up a new or replacement room thermostat.

A thermostat wire uses low voltage signals to transfer data. Southwire 250 ft 18 8 thermostat wire by the roll. R the r terminal is the power. If possible share the section below with someone more experienced that can help explain how the thermostat above is capable of working.

Over a long distance the signals can become to weak to get a reading. Heck now i m not calling anyone a dummy. The main trouble is dealing with those different colored wires knowing which one does what and if that wasn t enough you also have numbers and letters to deal with. 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.

Refer back to the diagram often and don t get ahead of yourself. These two connections will ensure that there is power to the thermostat that you are operating. Even the most seasoned people who enjoy diy may come across problems with wiring a thermostat. The color of wire r is usually red and c is black.

For example if the red wire is connected to w on the thermostat the furnace should turn on. Color of wire and termination. This data can also be helpful if thermostat wires have become mixed up or improperly color coded by allowing you to trace wires back to their control connection point. Item 539961 model 65676944.

Wire helps transmit data over a longer distance. The larger 18 ga. C is known as the common terminal. As shown in the diagram you will need to power up the thermostat and the 24v ac power is connected to the r and c terminals.

Thermostat wire reference chart.