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air in system

Brad White_9
Brad White_9 Member Posts: 2,440
If the system has sufficient pressure at cold fill time (4 to 5 psig at the high point) and your circulator is drawing away from the expansion tank location, you should not have air problems. Is there an air separator, air vents at the very high point and/or a purge station?

Not sure what you mean by air vents at the wrong location. They need to be at the high points to be effective, otherwise you are going to have to purge.


  • Bernie Riddle_2
    Bernie Riddle_2 Member Posts: 178
    air in system

    we installed a new hot water system this summer it is in a garage two overhead doors an office the office has baseboard the garage has too coils one on each side of shop it seem when the temp. is warmer and the water is not circulating it gets air in the system we have an air vent but i think the installer but it in the wrong spot where is the best location for this also the air handlers are 30 feet from boiler is this a problem
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