Honeywell CT6. 2B1. U Manual 4 Wire Premium Thermostat, thermostat, manual thermostat. How to Wire a 2- Wire Thermostat to a 4- Wire System. A thermostat is designed to control the temperature of a heating or cooling unit in the home. Replacing an outdated four- wire thermostat with a newer model that uses two wires is not complicated, once you purchase the thermostat from a home- and- garden shop or hardware store. The procedure to install the new thermostat is straightforward and does not require the assistance of a certified electrician. A few tools found around the house are all that's needed. Step 1. Remove the fuse or trip the circuit breaker in the fuse box that supplies power to the thermostat and the unit that it controls. Details as to which fuse/circuit breaker affects which electric line is typically noted on the inside of the fuse box or beneath the fuse/circuit breaker. Step 2. Remove the cover from the thermostat. Typically, this involves pulling the cover off, although in some cases you might first need to wiggle one side loose and then the other. Step 3. Remove the screws from around the thermostat with the Phillips jeweler's screwdriver. Pull the thermostat out from the wall. Step 4. Aim a flashlight at the terminal block inside the wall to determine which screws are connected to the red and white wires attached to the thermostat. Loosen the screws on the terminal block with the Phillips jeweler's screwdriver. Unwind the four wires attached to the thermostat from around the screws. Remove the thermostat and dispose of it properly. Step 5. Wind the exposed end of the red wire attached to the replacement thermostat around the screw that formerly held the red wire from the old thermostat. PROGRAMMABLE THERMOSTAT THERMOSTAT PROGRAMMABLE PROGRAMMEERBARE THERMOSTAAT TERMOSTATO PROGRAMABLE. Loosen the screw of the terminal block and install the wires.Wind the exposed end of the white wire attached to the replacement thermostat around the screw that formerly held the white wire from the old thermostat. Tighten these two screws as well as the other two screws on the terminal block. Step 6. Place the replacement thermostat against the wall and screw it on using the Phillips jeweler's screwdriver. The main trouble is dealing with those different colored wires. How to Install a Thermostat Thermostat Wiring for Dummies The C. Lux WIN100 Outlet Thermostat. Honeywell CT62B1015/U Manual 4 Wire Premium Thermostat from. the thermostat was easy to install. Honeywell RTH2300B1012/U 5/2-Day Programmable Thermostat. The old ones have only two wires which are black and connected to two black wires in the outlet. install have four wires. Replacing a 2 wire thermostat with a 4. Place the cover over the replacement thermostat. Restore electric power to the thermostat and the unit it controls. ![]() ![]()
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