If you check the honeywell thermostat ct31a1003 wiring diagram you ll see that it requires only two wires. The model number of the honeywell thermostat was not provided however here are the typical wiring assignments for a conventional heating system.
If you have a two stage heat pump then you will also utilize terminal y2 for the second stage.
Honeywell thermostat wiring diagram. At left the thermostat wiring diagram illustrates use of a honeywell t87f thermostat in a 2 wire application controlling a gas fired heating appliance. This is because it s a very basic thermostat designed only to control a heating system. In the honeywell t87f thermostat series the single pole double throw switch makes closes one set of contacts when the temperature.
Use our helpful tool to take an assessment of the existing wiring in your home. In the fixed wiring as a means of disconnecting the mains supply. Prepare for mounting the new thermostat s wall plate.
C 24 vac common you might see blue purple or brown typically used for this wire. 2 wire gas heat honeywell t87f thermostat wiring diagram. The t6360b room thermostat l641a cylinder thermostat and honeywell.
4 wire honeywell thermostat wiring diagram a pcb layout is the resulting design from taking a schematic once specific components and determining how they will physically be laid out upon a printed circuit board. Honeywell smart thermostat wiring. To develop a pcb layout you must know the associates of components component sizes footprints and a myriad of extra properties.
In our case our new honeywell rth9580wf t stat has identically spaced holes to our old thermostat. Thermostats vary in the features they offer and there are also differences when it comes to wiring one to control your home s heating and cooling system. The diagrams refer only to 3 amp fuses for gas appliances throughout.
Use a 5 amp fuse for oil where appropriate. But here is a list of the most common wire color mappings as seen in many four wire t stat setups. Keep in mind that there should be a low voltage cable in the wall where the thermostat is located which has individual wires as shown in the instructions below.
Make sure you have holes in the wall that line up with the holes in the new wall plate. The table above provides a more complete list of honeywell thermostat wiring colors and their uses. The honeywell home trademark is used under license from honeywell international inc.
The heating system must be appropriately fused for attached appliances. Furthermore this thermostat wiring diagram is specifically for a system with two transformers your system likely only has one transformer as most typical residential systems only use a single transformer for control. Our wiring diagrams section details a selection of key wiring diagrams focused around typical sundial s and y plans.
Find out if your home is compatible with a honeywell home thermostat. Honeywell thermostat wiring diagram 4 wire examples. That is a basic honeywell thermostat wiring diagram for a single stage heat pump.