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What does RH stand for on thermostat?

Understanding what RC stands for means, you can probably take an educated guess as to the meaning of RH. The “R” still indicates it’s a hot wire and terminal connection, and the “H” simply means heating. The RH wire connects to the RH terminal and controls the heating part of the thermostat.

Besides, is r the same as Rh on thermostat?

R , Rh , and Rc are all the same, but not. In general terms, the R terminal is where you connect the signal voltage source. This allows current to flow from “into” the R terminal and “out of” the appropriate signal terminal ( W , Y , etc.) of the thermostat.

Similarly, what do the letters mean on thermostat? The terminals have letters that refer to functions. R is transformer power, typically 24V AC. Rc is for a separate transformer power from cooling. W is heat, C is common.

In this regard, what color is the RH wire thermostat?

Thermostat Wiring Color Code Chart

Marking Wire Color Code Description
Marking Wire Color Code Description
Rc Red Power from cooling, 24 Vac transformer
Rh Red Power from heat, 24 Vac transformer
C Black/Blue Common of 24 Vac transformer

Is RC the same as C wire?

Though it is a common notion, it may be incorrect to state that the Cwire powers the thermostat. Typically, the wires that give the power supply (usually termed as the ‘hot’ wires) are marked Rc (for cooling) and Rh (for heating). They give a 24-volt power supply from the HVAC system’s control panel.

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