Another question on heater installation!!

[Fritz2me]

Through help from this forum, I have installed 2 heaters in one room... 1000 watt with an on heater thermostat and another 1000 watt without a thermostat but controlled by the first heater.

Now I want to run another heater in another room BUT on the same circuit and with a thermostat installed on this one so the curcuit would be: first heater with thermostat, 2nd heater without, 3rd heater with thermostat.

My questions are: Is this alright to do?

and if it is, then with the first heater having a double pole thermostat, can I use a single pole thermostat on the 3rd heater?


Fritz

[suemarkp]

How large is the circuit and how large are the heaters? You can run 3800 watts of baseboard heater on a 20A 240V circuit. You've already used 2000 watts. If the next heater is 1800W or less, then you're fine.

At your existing heater (w/thermostat), you need to tap the two power wires and extend those to the next room (your original drawing showed 2 red wires to the LINE side of the thermostat -- put one wire of the 12-2 in the nut with each of those red wires).

Then wire the two wires in the other room to the two LINE side wires of the new heater/thermostat (just like the 2 red wires on the other heater). A disconnect must be within sight of what it is disconnecting. If you can see the other room thermostat from these heaters, then it could be the disconnect. If not, then the local heater thermostat needs to be double pole, or you use a circuit breaker with a padlock hasp, or you install a wall switch or double pole thermostat in that room for that heater.

Also make sure the heater is not a 120V heater (could be if it has a single pole disconnect). Your circuit would need 3 wires from the breaker to the first thermostat (e.g. 12-3 cable) if you need to mix 120V and 240V heaters on the same circuit.

[Fritz2me]

The circuit is 240 and the 3 heaters are 240 volt of 1000 watts each.

The 1st heater is on the far wall. The 2nd & 3rd heater are on the opposite sides of the wall that separates the two rooms. I was hoping to go from 2nd to 3rd but it seems from your answer I may not be able to.

Just in case I misunderstood the answer, I've included a new drawing showing how I have already tied in heater #1 and #2:

Based on this can I:

(a): separate 8 (that are presently connected together) and tie in A & B?
OR
(b): tie A and B to 5 & 6?

[junkcollector]

Based on this can I:

(a): separate 8 (that are presently connected together) and tie in A & B?
OR
(b): tie A and B to 5 & 6?

If you seperate 8 you will have two heaters wired in series. :y:(very minimal heat) If you tie into 5&6, heater # 3 will be controlled by the thermostat in heater # 1. (thermostat in heater #1 being the "master thermostat.") Is that what you want? If so, make sure that the thermostat in the first heater can take the additional load of two more heaters.

If you want heater #3 to work independently of the first two, you will need to run power to your the first heater, (wires 1&2)

[Fritz2me]

I want to do the 3rd option. However, I seem to be having a problem of a different kind...

The thermostat on the heater won't shut off. I had set the dial at 3 (out of a possible 7) and the room is well warmed up, but still it keeps putting out the heat. Could this be a faulty thermostat or a problem with the heater itself or something else?

Fritz

Forgot to mention, the thermostat will turn off when set to zero.