Help me find a Thermostat solution

Old 11-13-06, 12:42 PM
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Question Help me find a Thermostat solution

I have what they call a Hydro-Air heating system and I am trying to find a Thermostat that meets my needs.

Here is a link to my system

My problem is that the way the system is currently setup I have six thermostats. One for each of the wall units.

The problem I see is this system uses line voltage theremostats since the fan needs line level voltage to operate.

So right now there are three wires to the thermostat. The Heat Call, the Heat Power and the Fan wire. The three common wires are tied together, but not connected to the thermostat. The best I can tell is the thermostat closes the loop when it needs heat (Calls the hot water) and then gives power to the fan at the same time. So when the heat is on there is line voltage going through everything.

Naturally a 24v thermostat will not work. I would like something programmable because no one is home about 12 hours a day, I would like heat maybe four hours a day and then during sleep time the heat for the other 8 hours can be scaled back. Naturally a programmable thermostat would work best, but I canít find a thermostat that meets the line voltage requirement and if I did I would need six of them which would cost a fortune.

If I only needed the line voltage for the fan I could runs these in parallel and then have one thermostat, but each of the zones needs to call the hot water to heat the coils.

I know someone must have a idea
Old 11-13-06, 06:56 PM
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rmerikle Re: Thermostat(s)

I would have to see a wiring diagram before I could make any suggestions. If you can provide a link to one, I will be glad to take a look.

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