help adding a radiant loop


Old 01-09-12, 02:05 PM
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Join Date: Jan 2012
Location: USA
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help adding a radiant loop

I have hot water baseboard with two zones (1 upstairs 1 down). Each zone has a thermostat to a zone valve. The zone valves are wired so that when either is on the boiler and circ pump turn on.

I added radiant heat to half of the down stairs, with a rehau manifold and wilco circ pump and a watts mixing valve.

Right now I have the radiant pump on all the time. So I only get heat when one of the other zones calls for it.

My question is how do I turn the radiant circ pump and boiler on with a thermostat (new)?
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Old 01-09-12, 04:13 PM
Join Date: Feb 2011
Location: US
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One of these can do what you want.
SR501-2 - Taco SR501-2 - 1 Zone Switching Relay
Or ,better yet, get one that can do three zones, and re-wire the existing zone valves for a nice neat set-up.



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