Home Thermostat Wiring Diagram. It shows what sort of electrical wires are interconnected and can also show where fixtures and components might be. The diagram below shows how a basic 4 wire thermostat is connected as indicated by the color code chart above.
Rc red wire power 24 vac rh or 4 red wire jumpered power 24 vac w white wire for heating enable y yellow wire for cooling enable. Most setups will be just fine with letters but if the print is a bit fuzzy falling back to colors will help you to figure out where each wire goes. The basic heat ac system thermostat typically utilizes only 5 terminals.
Home ac thermostat wiring diagram.
Home ac thermostat wiring diagram. A thermostat wiring diagram can help you understand how your hvac. The wiring of your thermostat appears complicated but when you understand the basic structure of it including the terminals and thermostat wiring colors its much less overwhelming of a task to install your own system. The diagram below shows how a basic 4 wire thermostat is connected as indicated by the color code chart above.