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Using a pump relay to fire circulator for more then one zone/thermostat?
Hello fellow plumbers,
I have a Client that wants 11 different zones in his new house. I mostly do 3 to 5 zones all on a circulator relay from the thermostat. So what I want to do is install Viega flow control manifolds with the powerheads(zone valve on header) and put up to 3 zones all with there own powerhead and thermostat on one circulator.
So my question is: Say I have a Taco Pump Control Relay (6 zone option), 4 wire viega powerhead zone valves(which close 24v circuit on call from the thermostat, open the zone valve,and send 24v to the pump relay) Can I install the 24volt wires from all 3 zone valves into "zone 1" on the taco pump relay so I can use one pump for 3 zones?, Im wondering this because say one TT called for heat would the 24v supplied from the zone calling for heat cause the other 2 power heads to open from a back feed because they would all be in the same circuit? Or is there an easier way?
I don't want to use one circulator. I use the flow control headers because I can balance all headers at 1GPM per loop which gives you 2-4ft per second velocity which is the most efficient passing of heat into the concrete, With one circ I will not be able to get that 1GPM on 4000 feet of pipe.
I have attached an image of a drawing I made to give you a rough idea what I'm asking. Sorry I'm a messy writer.