Old 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.
Old honeywell thermostat wiring diagram. Never attach wires to both the b and o terminals. 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. The table above provides a more complete list of honeywell thermostat wiring colors and their uses. But here is a list of the most common wire color mappings as seen in many four wire t stat setups.
The honeywell home trademark is used under license from honeywell international inc. Use the wiring cross reference table below to match each old thermostat wire with its corresponding terminal on the ct87 wallplate or subbase. Red now there can be two separate wires for this. Install the honeywell lyric thermostat like a pro.
Wiring details troubleshooting for the honeywell 5 2 day programmable thermostat rth2300b1012. Also see these other honeywellt87 wall thermostat wiring diagrams honeywell wall t87 f type thermostats for sketches and drawings of honeywell thermostat wiring hookups. Yellow the yellow wire connects to your compressor. In the honeywell t87f thermostat series the single pole double throw switch makes closes one set of contacts when the temperature falls to turn on the heating appliance.
Green the green wire connects to the fan. These wires run directly outside and provide outdoor temperature information to the thermostat. Strip the wire insulation as needed to fit the wires underneath the ter minal screws. C 24 vac common you might see blue purple or brown typically used for this wire.
Honeywell wire saver modules combine the y and g wires to form a single k wire that connects to the k terminal on some honeywell thermostats. Our wiring diagrams section details a selection of key wiring diagrams focused around typical sundial s and y plans. The model number of the honeywell thermostat was not provided however here are the typical wiring assignments for a conventional heating system. Honeywell thermostat wiring diagram 4 wire examples.
8 through 13 wiring diagrams. Wire the thermostat 1. White the white wire is what connects to the auxiliary heat on your system. Orange this wire connects to your heat pump if you have one.
Honeywell thermostat rthb wiring diagram. 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.