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01-24-2007, 11:38 AM #1Regular Guest
- Join Date
- Jan 2007
Wiring of two-zone system not working correctly
I am having issues with my heating system. I have attached a diagram. Here's what happens: When T-Stat for Zone 1 turns on, it starts the boiler, opens the damper and turns on the pump. (Obviously this is fine). When T-Stat for Zone 2 turns on, the boiler starts, the damper opens and BOTH pumps turn on. (Obviously I only want pump zone 2 to start). The way it is wired now, it applies 24 volts from T-Stat 2 to the exact same terminals that T-Stat 1 is connected to. So when that happens it is like T-Stat 1 turns on and thus starting the Zone 1 pump.
By looking at the diagram, could someone tell me or show me with another diagram how this system should be applied so that each zone works independently of each other but both start the boiler and open the damper.
PLEASE HELP. Thanks.
01-24-2007, 12:26 PM #2
You could install a 2 zone Taco zone valve controller and let the end switch operate the boiler and damper, thereby isolating the T stats, shouldn't be too bad $ wise
01-24-2007, 12:34 PM #3