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Old 01-20-2015, 10:19 AM   #1
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Hey all, I'm replacing an old thermostat from analog to digital. http://imgur.com/vZjbunG I have this at hand and the digital thermostat says maximum 3000w at 240v so obviously the thermostat needs to be higher rated given the wattage of the floor system is 4145 watts. Hypothetically if a low voltage transformer were installed and low voltage wire were run to the existing thermostat would that change things? The new thermostat also says 2 wire on the package and I have yet to open up the old one

Thanks
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Old 01-20-2015, 11:21 AM   #2
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Originally Posted by fernlane View Post
Hey all, I'm replacing an old thermostat from analog to digital. http://imgur.com/vZjbunG I have this at hand and the digital thermostat says maximum 3000w at 240v so obviously the thermostat needs to be higher rated given the wattage of the floor system is 4145 watts. Hypothetically if a low voltage transformer were installed and low voltage wire were run to the existing thermostat would that change things? The new thermostat also says 2 wire on the package and I have yet to open up the old one

Thanks
No.

So you need the right sized thermostat.
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Old 01-20-2015, 11:27 AM   #3
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If the new t'stat were connected on the load side to a transformer, which in turn drove a contactor or relay, which in turn was sized properly for the load.....

I can see it working just fine.

Jerry-rigged to be sure, but it would work.
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Old 01-20-2015, 10:33 PM   #4
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Originally Posted by fernlane View Post
Hey all, I'm replacing an old thermostat from analog to digital. http://imgur.com/vZjbunG I have this at hand and the digital thermostat says maximum 3000w at 240v so obviously the thermostat needs to be higher rated given the wattage of the floor system is 4145 watts. Hypothetically if a low voltage transformer were installed and low voltage wire were run to the existing thermostat would that change things? The new thermostat also says 2 wire on the package and I have yet to open up the old one

Thanks
You could use that T stat to control a relay/contactor
which would in turn control the heater.

But why would you want to ?

Easyer to just get a bigger T stat surely ?

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Old 01-20-2015, 11:44 PM   #5
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Back up here. The stats I normally use are rated 3600W. I would have separated that into two zones. You need #12 conductor and a 20 amp breaker. What do you have?
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