Wiring a Double-Pole Line Thermostat Connect the black wire going to the heater to T1 and the red wire going to the heater to T2. If there are white wires in the box, splice them together and cap them, then twist together the ground wires and connect them to the ground screw.
How Line Thermostats Work. Line thermostats turn on and off electric baseboard heaters. You see, the low voltage circuits pull in a relay that completes the furnace circuit, whereas this thermostat breaks and makes the circuit that directly feeds the furnace.
Also, what are line voltage thermostats? Line voltage thermostats are designed to directly control electric heaters, such as baseboard heaters, by switching the main power on and off to the heater. It is important to select an appropriate thermostat that can handle the rating of the heater that will be controlled.
How to Wire a 240V Thermostat
when you 're up over 2kw, 240V is just the smart way to go. You can use mechanical 240V thermostats with 120V just by wiring both poles in series. That won't work with electronic 'stats, as they need a way to power themselves and they are "geared" to poach power off the 240V.
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How to Install a New Thermostat
Rh stands for Red-Heat and Rc stands for Red-Cool. If you only have a single red wire the jumper between Rh and Rc are required for some heating and cooling hybrid systems depending on your thermostat . Yellow /Y is the AC compressor. White/W is the Heating element. Green/G runs the fan.
Here's how to test your thermostat to see if it works:
How to Override Your Hotel's Thermostat Controls and Make it as Cool or Hot As You'd Like
The Honeywell Lyric, Nest and other smart thermostats are designed to work with central home heating systems. Those are controlled by low voltage thermostats , which use 24 volts. Electric baseboard and fan heaters work with line - voltage thermostats , which can be either 120 or 240 volts.
You replace the line voltage thermostat with the switching relay, then add low voltage wire from a transformer to power the Nest or other low - voltage thermostat . Wires from the low voltage thermostat simply run to and turn on or off the switching relay.
For double-pole thermostats:
Most two- wire thermostats wire have a red and white wire encased in a brown insulated coating. Strip the red and white wires back about 1/4 inch at both the thermostat and the furnace ends. Connect the white wire to the "W" terminal on the furnace and thermostat .
Line voltage is the standard voltage —120 volts—that's found in outlets and junction boxes in the United States and Canada. Low- voltage lighting typically uses 12 or 24 volts and requires a transformer to lower the line voltage from 120 volts to avoid immediately burning out the low- voltage bulb.
At its core, a thermostat is simply the controls used to regulate temperature in a heating system. You can set a preferred temperature, and the thermostat works to keep your room or boiler at this desired level. If the home starts to drop in temperature, a thermostat switches the heating on to warm it up.
Yes, you can connect a four wire thermostat to this setup. Connect the white wires in the same manner as the black wires are connected.
4 signs your thermostat is bad
Low - voltage thermostats are powered by a transformer that reduces the incoming line voltage from 120 volts down to a level between 12 and 24 volts, depending on your furnace design.
NOTE: Before you consider which thermostat you need, make sure you know what type of circuit you have. A low voltage thermostat will not work with line voltage wiring.
Double pole thermostats have an "off setting" and break both sides of the heater's power line. Single pole thermostats only have a "low" setting and no true "off" setting, and break only one side of the heater's power line. They typically have two (2) connection wires.
Double - Pole Thermostats . A single - pole thermostat opens the circuit by cutting current through one or the other of the hot wires . Double - pole thermostats open both hot wires . The circuit is energized only between the breaker box and the thermostat , and there should be no risk in working on the heater.
Look at the circuit breaker for the baseboard heater and the wire or wires that connect to it. A circuit breaker with one wire indicates the baseboard heater operates at 120 volts. Two wires supply 240 -volt heaters.
SO: it's always safe to turn off the furnace power. Check with a meter for all wires to all wires at the thermostat . If you start messing about with these, you don't risk getting an electric shock , but you do risk damage to the electronics.
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