Hi. I have a problem. My Tarm 60 is almost done with a full burn and my tanks are charged to 185. The problem is my house forced air zone wont shut off. The zone is supplied by a zone valve and grunfos Alpha. I have the Taco zone valve control box with a Relay ( I dont know much about the electrical controls). The little red light on the relay is staying on. House is now up to 72 degrees and climbing with the stat set at 68. Any thoughts?
Heat wont shut off
- Thread starter jimdeq
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Or it may be easier to pull one of the T-Stat wires from the Zone relay box actually, to see if your T-Stat is working properly.
It just shut off. I did not pull any wires or breakers. It shut off at 73 degrees which is 5 degrees higher than the set point. I think the same thing happened a week ago. Which part of my system seems faulty?
Have you tried interrupting the power to the Taco control and the restoring power? Could the small relay be stuck?
I think some of the Taco panels have extra relays.
gg
I think some of the Taco panels have extra relays.
gg
What type of T-Stat do you have? It may be dirty contacts or like gg said a faulty/erratic relay in your zone control panel. If you can see the contacts for the T-Stat (older types) you can try cleaning them, or opt to replace it also.
What was the boiler temp when this happened?
Is your boiler wired to turn on an "overheat" zone to cool the boiler?
Is your boiler wired to turn on an "overheat" zone to cool the boiler?
Clarkbug
Minister of Fire
Mikefrommaine might have it....
The TARM install diagrams call out to interlock the overheat aquastat on the boiler with the largest house zone. Depending on the setpoint of that aquastat, that would trip your zone on to dump excess heat. Sounds like you may need to use a smaller load of wood next time, or adjust your overheat aquastat.
The TARM install diagrams call out to interlock the overheat aquastat on the boiler with the largest house zone. Depending on the setpoint of that aquastat, that would trip your zone on to dump excess heat. Sounds like you may need to use a smaller load of wood next time, or adjust your overheat aquastat.
Thanks for the advice fellas, I called my electrician and he said that the overheat aquastat was tied into my house load. Apparently I was not moving enough flow to get BTUs out of the boiler.
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