Wiring Diagram Old Round Honeywell Thermostat

8 through 13 wiring diagrams.

Wiring diagram old round honeywell thermostat. How is a honeywell thermostat wired. Label wires and remove your old thermostat see pages. 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. The blue brown or b lack wires also referred to as the c wire this wire connects the low side of the output of the low voltage power to the t stat.

Use the wiring cross reference table below to match each old thermostat wire with its corresponding terminal on the ct87 wallplate or subbase. Ct87a b j roundfi thermostat 69 0274 6 6 wire the thermostat 1. The thermostat makes a contact on both a rise and on a fall of room temperature. Use the wiring cross reference table below to match each old thermostat wire with its corresponding terminal on the ct87 wallplate or subbase.

8 13 for wiring diagrams. 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. The red wire the red wire r rc rh connects the high side of the output of the control transformer to the t stat. Pamela a handy woman from brockton massachusetts.

This is a round thermostat with a dial on it. T6 pro wiring diagrams. Honeywell thermostat rthb wiring diagram. 2 stage heat pump thermostat wiring rheem.

It s there so you can supply power to the heating and cooling switches with a single wire which is usually red. I am trying to rewire a 5 wire honeywell thermostat. Install the honeywell lyric thermostat like a pro. Install and.

The wiring for your honeywell thermostat depends on the functions of your heating and cooling system. At left the thermostat wiring diagram illustrates use of a honeywell t87f thermostat in a 2 wire application controlling a gas fired heating appliance. 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. Wiring cross reference connect to connect to connect to wire label ct87a.

Gas or oil furnace. Never attach wires to both the b and o terminals. 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. If labels do not match letters on the thermostat check the chart at.

This electrical wiring question came from. Wire the thermostat ct87a b j round thermostat wire the thermostat 1. You ll probably see a thermostat jumper wire connecting the rc and rh terminals.