Looking for an electrician/electronics person. Wiring in a remote thermostat in a hanging garage heater

[rod...@rodneydickman.com]

I have a King hanging electric heater. I bought the controller to use to run a remote thermostat. I have no clue on how to wire it in the heater. I need to know if the wall thermostat I bought will work and how to connect the wires in the unit. I bolted the controller in the heater.

[Christopher Otto]

Well King's documentation ain't the clearest, is it? Anyway I found additional 24A01G-3 schematics online, and as I interpret this & the schematic on the King heater, you'll have to

1. follow the first two instructions listed under "Wiring Instructions for Remote Mechanical Thermostat", and remove the red and the black wires from terminals RT1 and RT2 to disconnect the internal thermostat.

2. Ignore the note that says not to connect anything to R3; that would be true if you were using a 240V-rated thermostat, but we're not, so...

3. 24A01G-3's yellow wire to RT1 (where it eventually connects to one leg of the incoming AC)

4. Blue wire to RT2 (and thence to the internal 'run' relay)

5. Black wire to RT3 (where it's supplied from the other leg of incoming AC.)

6. 24A01G-3's red and yellow wires will connect to an SPST output of your low voltage-rated wall thermostat; they'll carry 24VAC supplied by its internal transformer.

I'm an industrial electrical controls guy, so it's probably wise to wait for a second opinion from an HVAC pro or someone who's done this before. Hope this helps

Chris O.

On Tue, Dec 12, 2023 at 11:40 AM rod...@rodneydickman.com <rod...@rodneydickman.com> wrote:

I have a King hanging electric heater. I bought the controller to use to run a remote thermostat. I have no clue on how to wire it in the heater. I need to know if the wall thermostat I bought will work and how to connect the wires in the unit. I bolted the controller in the heater.

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[Christopher Otto]

Oops. I mistyped. The pair of red and WHITE wires connect to your low voltage thermostat (which you might still have to acquire?). Yellow wire's only going to connect to RT1 and it's 208 or 240VAC.

Chris O.

On Tue, Dec 12, 2023 at 4:39 PM Christopher Otto <phase...@gmail.com> wrote:

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