Thermostat Control Wiring Diagram. Remove the control panel of the old thermostat. The wiring diagram on the back of the device shows the wiring for the relay operation.
Red now there can be two separate wires for this. The 18 refers to the gauge and the 5 refers to how many individual wires are inside the cable. The thermostat automatically opens hot version or closed cold version the.
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.
Wiring in front of dometic relay control box. Common applications of thermostat are to maintain room temperature in. One is for cool and the other is for heat hence the abbreviation rh and rc. The wiring humidipro with fan interlock for 2 speed motor.