Line Voltage WiFi thermostat

[kap]

I have a 16' x 32' barn/shed where I store my convertible in the winter. This is also my car workshop/shed. We have an attached 2 car garage where we actually park two cars. All my automotive tools and mid-rise lift are in the barn/shed as well.
A couple of years ago, I installed a Fahrenheat FUH 5000w electric heater (almost identical to a Dayton unit I had in my previous barn). I currently have a basic Honeywell line voltage thermostat connected to this heater. I set it to 40 degrees all winter. If I go out there to work in the cold weather, I raise the temp to 60 - 65 and it's comfortable. It takes a bit of time to get to temp, so I sometimes supplement the warm up time with a radiant propane heater. Once up to temp, the Farenheat unit works fine.

So here is the question: does anybody know of a WiFi Line Voltage thermostat (240v) that will handle 5000 watts? The highest amperage unit I've found is rated for 16 amps (240v x 16a = 3840 watts). I'd like to be able to turn up the heat from the house before I go out there, and be able to turn it down from the house (my iPhone) when I forget to turn it down when I leave the barn.

 

[Shiftless]

Sounds like you need a relay.

 

[fitter30]

Delete

 

[ipgenie]

I would use a low voltage thermostat and a contactor. I plan on doing this for an infrared heater in my shop over the workbench. The contactor will handle the line voltage current and there are lots of options for low voltage thermostats that are affordable. Our power company will even pay for a couple if they are on their list.

 

[vwpieces]

ZW5jcnlwdGVkUXVhbGlmaWVyPUFSTFZVM0YzS1hTSE4mZW5jcnlwdGVkSWQ9QTAwMzAxNTcyOE1BUlQwQ0lWOFExJmVuY3J5cHRlZEFkSWQ9QTEwMjAzNjcxNEdFWUZSUkdGTU5WJndpZGdldE5hbWU9c3BfcGhvbmVfc2VhcmNoX2F0ZiZhY3Rpb249Y2xpY2tSZWRpcmVjdCZkb05vdExvZ0NsaWNrPXRydWU

I think you **** Dialed GJ

 

[fitter30]

Try this

7 Best Line Voltage Smart Thermostats Reviews in 2022

Having a line voltage smart thermostat installed in your home is quite a convenience as you get full control of the indoor temperatures. In case you are thinking of installing such a system and making a smart home, we have a list of the best line voltage smart thermostat options that you can...

www.electronicshub.org

 

[kap]

Anybody using one of these Aube 240v relays connected to a 24v WiFi thermostat:

https://www.amazon.com/dp/B0037MXM1C/?tag=atomicindus08-20

Look like it will handle 22A at 240V which is more than I need for a 5kW heater.

 

[ipgenie]

I haven't used one but that looks like a great solution to me. At that price I might grab one too and use it instead of a contactor.

 

[pl_silverado]

Anybody using one of these Aube 240v relays connected to a 24v WiFi thermostat:

https://www.amazon.com/dp/B0037MXM1C/?tag=atomicindus08-20

Look like it will handle 22A at 240V which is more than I need for a 5kW heater.

I do, works great, however I am using it to control the 240v contactor on a 10kw 240v unit not the elements themselves. I would suggest adding a fan relay to kick the elements on for a few seconds to preheat before fan and then let the fan run to cool the elements off after they are shut off. I used ICM-256 to control the fans, and have the aube wired to a honeywell 8000.

 

[PoorUB]

I do, works great, however I am using it to control the 240v contactor on a 10kw 240v unit not the elements themselves. I would suggest adding a fan relay to kick the elements on for a few seconds to preheat before fan and then let the fan run to cool the elements off after they are shut off. I used ICM-256 to control the fans, and have the aube wired to a honeywell 8000.

If you replace the factory installed thermostat with the Aube relay the heater will run as designed. The elements will come on for a few seconds, then the fan, the thermostat will shut down the elements and the fan will continue to run for a few seconds.
You should not kill the power to the heater with a line voltage thermostat as it is hard on the elements to shut them off hot and no fan.

Page 4 in this link shows the wiring for that Fahrenheat FUH 5000 heater.

https://www.marleymep.com/system/files/node/file/field-file/5200-11195-003.pdf

 

[pl_silverado]

^good catch. I did not check the manual for that specific heater. I have a fostoria 10kw that I just rewired so the info I provided was still fresh on my mind. It came with a 2 function knob, there was no automatic control of the fans.

 

[PoorUB]

I looked up your heater, you can do the same.

 

[pl_silverado]

I looked up your heater, you can do the same.

Wrong. There was no provisions for fan control from the factory other than the rotary knob I did away with. There was no delay on/off.

Mounted the AUBE in its place and added the little board for fan.

 

[PoorUB]

Wrong. There was no provisions for fan control from the factory other than the rotary knob I did away with. There was no delay on/off.

Mounted the AUBE in its place and added the little board for fan.

Which model? Perhaps i looked up the wrong model, but from what I saw if you swap out the thermostat with the relay it would work like it came from the factory.

 

[AlbertF]

My application is electric baseboard heaters. When the house was built they ran multiple baseboard heaters 240v off of one line voltage thermostat on a two pole 30amp circuit. I don’t envision an instance where I would get even close to that amperage. Would this Aube solution with a low voltage smart thermostat work for me?

 

[PoorUB]

My application is electric baseboard heaters. When the house was built they ran multiple baseboard heaters 240v off of one line voltage thermostat on a two pole 30amp circuit. I don’t envision an instance where I would get even close to that amperage. Would this Aube solution with a low voltage smart thermostat work for me?

It should, but keep in mind you need to run thermostat wire to the thermostat and then to the relay.

Seems to me that Honeywell/Resideo offers a wireless thermostat for electric baseboard.

 

[pcmeiners]

Anybody using one of these Aube 240v relays connected to a 24v WiFi thermostat:

https://www.amazon.com/dp/B0037MXM1C/?tag=atomicindus08-20
Look like it will handle 22A at 240V which is more than I need for a 5kW heater.

Why spend $75, when you can get the same/equal for half that or less.

Pardon Our Interruption...

 

[AlbertF]

It should, but keep in mind you need to run thermostat wire to the thermostat and then to the relay.

Seems to me that Honeywell/Resideo offers a wireless thermostat for electric baseboard.

I must have misread the wiring diagram. I thought I wired to the relay, then from the relay to the stat