Wiring Diagram Old Round Honeywell Thermostat
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.
Wiring diagram old round honeywell thermostat. Honeywell thermostat wiring diagram wires. The red wire the red wire r rc rh connects the high side of the output of the control transformer to the t stat. 2 stage heat pump thermostat wiring rheem. Label wires and remove your old thermostat see pages.
Use the wiring cross reference table below to match each old thermostat wire with its corresponding terminal on the ct87 wallplate or subbase. Never attach wires to both the b and o terminals. 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. Note that in our case we had to use the green wire for c as discussed below because there were only four wires coming from.
This is a round thermostat with a dial on it. At left the thermostat wiring diagram illustrates use of a honeywell t87f thermostat in a 2 wire application controlling a gas fired heating appliance. How is a honeywell thermostat wired. T6 pro wiring diagrams.
I am trying to rewire a 5 wire honeywell thermostat. A look at a iconic bit of equipment the classic honeywell round thermostat. It s there so you can supply power to the heating and cooling switches with a single wire which is usually red. Ct87a b j roundfi thermostat 69 0274 6 6 wire the thermostat 1.
Pamela a handy woman from brockton massachusetts. Gas or oil furnace. Wiring cross reference connect to connect to connect to wire label ct87a. 8 13 for wiring diagrams.
At left the thermostat wiring diagram illustrates use of a honeywell t87f thermostat in a 3 wire application as a spdt single pole double throw switch such as used to control low voltage motors electric radiator valves zone valves. Wire the thermostat ct87a b j round thermostat wire the thermostat 1. The wiring for your honeywell thermostat depends on the functions of your heating and cooling system. The wires are blue green white orange and red.
Honeywell thermostat rthb wiring diagram. Install the honeywell lyric thermostat like a pro. Use the wiring cross reference table below to match each old thermostat wire with its corresponding terminal on the ct87 wallplate or subbase. 8 through 13 wiring diagrams.
You ll probably see a thermostat jumper wire connecting the rc and rh terminals. This electrical wiring question came from. The thermostat makes a contact on both a rise and on a fall of room temperature.