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Boiler return line - ghost flow
Jonn2018
Member Posts: 29
Hi all have a bit of a strange hearing issue going on. Seems when Zone 1 is on zone 2 gets very hot. However when Zone 2 is on zone 1 does not get hot at all. The system has taco zone valves the guts for zone 2 were changed out thinking it was stuck in open position but problem continued. Also zone 1 and 2 have separate supply lines and zone valves. But only one return line as shown in the circle in the drawing. So I think we have a “ghost flow”. I think zone 1 return instead of flowing to the basement reverse flows into zone 2.
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Comments
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How about some pics of the boiler that include its near piping and the ZVs?Bob Boan
You can choose to do what you want, but you cannot choose the consequences.0 -
You replaced the zone valve "guts". Does that mean the actuator head?
You probably need to replace the valve insert. Easy enough.0 -
Ironman I’ll post the pics when I get home tonight.
HVACnut yes what we replace was the zone 2 internals the electrical part we knew was not the culprit.0 -
Attached are additional boiler pics of the supply and return piping
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Could there be a wiring mixup?0
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From what I saw the wiring looks fine. As far the the Honeywell valves goes, each zone valve turns on and off when it’s called.0
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Modified pics0
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