Quck answer
To wire a Honeywell CT87N thermostat, follow these steps:
1. Turn off the power to the heating or cooling system.
2. Remove the old thermostat from the wall.
3. Identify the wires and their corresponding terminals on the old thermostat.
4. Connect the wires to the corresponding terminals on the CT87N thermostat.
5. Mount the CT87N thermostat onto the wall.
6. Turn on the power to the heating or cooling system.
7. Set the desired temperature on the CT87N thermostat.
8. Test the thermostat by adjusting the temperature and ensuring the system responds accordingly.
9. Make any necessary adjustments or corrections if the system does not work properly.
10. Enjoy the comfort and control of your newly wired Honeywell CT87N thermostat.
The Honeywell CT87N thermostat is part of the popular Honeywell “The Round” series, which features an analog dial and is frequently used by homeowners and contractors for easy and dependable climate control. This particular model is designed to manage your furnace and air conditioner and is compatible with systems that include four to six power and control wires. To connect a Honeywell CT87N thermostat, simply attach the system’s wires to the thermostat’s terminals, being sure to match the letter codes on the wires with those on the thermostat’s terminals.
How to Wire a Honeywell CT87N Thermostat
Step 1: Turn off Power
Before beginning, turn off the circuit breakers or remove the fuses controlling power to your furnace and air conditioner.
Step 2: Remove the Old Thermostat
Remove the front cover and mechanism of your old thermostat. Properly dispose of the thermostat according to local regulations if it contains a mercury thermometer tube or is labeled with a mercury warning.
Step 3: Disconnect the Wires
Mark each wire with a piece of masking tape and the letter of the terminal on which it is attached to the old thermostat’s base plate. Ignore wire color and mark them only based on the letters stamped on the old wall plate. Disconnect each wire one at a time.
Step 4: Remove the Base Plate
Remove the old thermostat’s base plate, and bend the wires over the gap in the wall so they don’t slip behind it.
Step 5: Mark the Mounting Hole Positions
Thread the wires through the rectangular opening in the base of your new Honeywell CT87N thermostat. Align the thermostat with the wall and level it if desired. Mark the positions of both screw mounting holes on either side of the base plate. Remove the thermostat and be careful not to let the wires fall behind the wall.
Step 6: Drill Holes for Screws
Drill holes at the marked points and tap a plastic anchor (provided) into each hole with a hammer.
Step 7: Pull Wires Through Thermostat Base
If using a cover plate, thread all wires through it, then through the rectangular opening at the bottom of the thermostat base.
Step 8: Screw in the Mounting Screws
Align the screw mounting holes with the anchors and securely screw each one into place.
Step 9: Match Wires to Terminal Block Letters
Match the letter(s) on the masking tape of any wire to the corresponding letter stamped on either the left side of the left terminal block or the right side of the right terminal block.
Step 10: Connect Wires to Correct Terminals
Insert any wire labeled “R,” “RH,” “4,” or “V” into the “R” terminal, any “G” or “F” wire into the “G” terminal, any “W,” “W1” or “H” wire into the “W” terminal, and any “Y,” “Y1,” or “M” wire into the “Y” terminal. If you have wires for both the “R” and “Rc” terminals, remove the metal jumper connecting them and unscrew both terminal screws before inserting either wire. Do not use the C or X wire. If you have a heat pump and both an “O” and “B” wire, do not connect the “B” wire. Use electrical tape to cover the exposed ends of all unused wires and push them behind the wall.
Step 11: Secure Each Terminal Screw
Loosen the terminal screw, insert the exposed wire end firmly into the terminal slot, and tighten the screw. Pull on the wire to ensure it is secure in the slot. If it comes out, repeat this step.
Step 12: Install Any Remaining Wires
Repeat Steps 8 and 10 for any remaining wires.
Step 13: Adjust the Switches
Set the fan switch to “E” in the center of the thermostat base if you have a heat pump or electrical heating system. Adjust the positions of the two cycle rate switches based on your system’s settings.
Step 14: Snap On the Cover
Align the tabs at the bottom of the thermostat cover with the lugs in the base and snap the cover into place.
Step 15: Restore Power
Turn the power back on to your system and adjust the dial, heating/cooling switch, and fan switch to your desired settings.
FAQ
1. What is the Honeywell CT87N thermostat and how does it work?
The Honeywell CT87N thermostat is a programmable thermostat that is used to control the heating and cooling system in your home. It is designed to provide accurate temperature control and energy savings. The thermostat works by sensing the temperature in the room and then signaling the heating or cooling system to turn on or off to maintain the desired temperature. It also has a programmable feature that allows you to set different temperature levels for different times of the day, helping you save energy and money.
2. What are the steps to wire a Honeywell CT87N thermostat?
Before wiring the Honeywell CT87N thermostat, make sure to turn off the power to your heating and cooling system. Then, follow these steps:
1. Remove the cover of your old thermostat and label the wires connected to it.
2. Disconnect the wires from the old thermostat and remove it from the wall.
3. Mount the CT87N thermostat base on the wall and thread the wires through the opening in the base.
4. Connect the wires to the corresponding terminals on the CT87N thermostat base, following the labeled wires.
5. Attach the CT87N thermostat cover and turn on the power to your heating and cooling system.
6. Set the desired temperature and program the thermostat if needed.
3. What should I do if I encounter any issues with my Honeywell CT87N thermostat?
If you encounter any issues with your Honeywell CT87N thermostat, there are a few troubleshooting steps you can try:
1. Check the power supply: Make sure the thermostat is receiving power and that the batteries, if applicable, are not dead.
2. Check the wiring: Ensure that the wires are securely connected to the correct terminals on the thermostat and the heating/cooling system.
3. Reset the thermostat: Try resetting the thermostat by removing it from the wall and disconnecting the wires for a few minutes before reconnecting them.
4. Consult the user manual: Refer to the user manual that came with the thermostat for specific troubleshooting tips and instructions.
If these steps do not resolve the issue, it is recommended to contact Honeywell customer support for further assistance.