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Old 01-17-2009, 10:34 AM   #1
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No heat in 1 of 3 zones, oil burner


Hello- I have a 3 zone oil-burner and hot water baseboard radiators. One of the zones does not heat. I tried turning up the thermostat to 90 and leaving it that way for about 10 minutes- nothing. All three zones have Taco 571 zone valves. On the zone in question I moved the switch on the Taco box to "open" and left it that way for about 10 minutes- nothing.

Does that indicate a bad zone valve switch?

I don't know much about it- so any help much appreciated.

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Old 01-17-2009, 12:21 PM   #2
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No heat in 1 of 3 zones, oil burner


There should be a small air bleed petcock/screw on the top/end of the radiators for that area. Open it slowly and bleed the air out until water comes out. You should also get a heating tech to check the water level in the system/expansion tank etc etc once a year.

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Old 01-17-2009, 12:42 PM   #3
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No heat in 1 of 3 zones, oil burner


All the radiators appear to be the same. Copper pipe out of the wall and into some metal fins and then copper pipe out and back into the wall. I don't see any kind of bleeder valve anywhere- just pipe and fins. ???
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