This information is designed to help you understand the function of the thermostat to assist you when installing a new one or replacing or up grading an old one.
Old furnace wiring diagram. This video is part of the heating and cooling series of training videos made to accompany my websites. For a simple home heating and air conditioning system normally the red wire is on the r terminal the white wire is on the w terminal the yellow wire is on the y. Typical wiring diagram manual indoor gas fired unit heaters and duct furnaces standard natural vent or power vented standing or intermittent auto spark pilot ignition table of contents item page.
This one is on the low voltage terminal board used to connect the furnace to the thermostat. It shows the parts of the circuit as simplified shapes and the power and also signal links between the gadgets. Make note of what wire connects to what terminal.
To wire a thermostat you must first be aware of the type of system that you have in your home. Wiring is done in the furnace junction box tape off both ends. The thermostat wire will connect to a terminal strip on it.
The thermostat wiring on these systems can have very similar wiring properties. A large majority of homes today have an hvac system containing a furnace oil gas or electric and an a c unit. Assortment of goodman furnace wiring schematic.
It has been in the house answered by a verified hvac technician. Tim uses the interactive wiring diagrams in hvac 3 0 to. A wiring diagram is a streamlined standard pictorial depiction of an electric circuit.
By changing the hot wires to the motor winding connections. We have an old gas furnace no wiring diagram or manufacturer or model name nothing. How to wire a thermostat.