Multi Zones warm with only one ON

Warm Water

I had a new furnace with 6 zones installed. Each zone has a TACO pump and the furnace has an input output manifold set up. When one zone call for heat the other warm up as well. Is there some push through the other zones or reverse pumping?

Jeff Lawrence_25

Flow checks?

Are there any kind of flow checks on the system? Can you post any pictures?

BTW, a furnace heats air, boilers heat water.

Warm Water

Only a Flow Check on the supply line.

kevin coppinger_4

it sounds....

like the boiler (not furnace) is not piped properly.you need a flow check for each zone...not just one on the supply....

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Warm Water

Then the problem is when one zone is on, the flow is then reversed on the others?

The return pipes are not as warm as the supply, so it leads me to believe the single TACO is pushing the warm water through the inactive Taco pumps.

Weezbo

i have found ,...that anything is possible...

and usually is:)

*~/:) Merry Christmas!

A picture is worth a thousand words in this instance...

Warm Water

See Photographs of Supply and Return manifolds.

kevin coppinger_4

sounds like...

phantom flow to me...but it is hard to say the solution w/o a drawing or a picture....kpc

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Weezbo

seems to me the supply is piped off the return

what i mean by that is the ifc pumps are pumping away from the expansion tank and the sparky air vent buh they are tied into the Boilers Return not its supply side... the return lines seem to all be tied to a common header banging into the boiler supply..

when such a configuration occurs the boiler heats the water the Hot water rise to the place it sees easiest to go,and or to open air...then when that happens it will set up a "Ghost Flow" within a single pipe allowing the cooler water a path to descend and the hot water a path to rise.

depending on the heat paths the water can migrate rather rapidly in pipes ,...heating the paint off the walls if someone doesn't put it right.