controls

BRIAN_3

we are add a heating zone to a hot water system right now has two heating zones and a indirect h2o htr cold start all is good . 3 zones are controled with a taco sr503 multi zone control. x1 x2 got to tt on main control works great. now my problem is when adding 1 more zone without changing controls but adding a single control and have it start the burner when tt calls for heat any help would be great thanks

Mark Hunt

What kind


of boiler are you using?

Mark H

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BRIAN_3

oil fired buderus with riello burner

John@Reliable

SR503 relay

Brian, check out www.taco-hvac.com. I think that control is expanable using taco relay , or maybe change it out with a six zone for any more upgrades

BRIAN_3

if come from out put on single zone relay to zc zr on taco sr503 will that make x1/x2 close to tt and start burner