Condensate hot water heating.

Jim S

We recently installed a new steam boiler in a residence which had an existing condensate hot water loop on the first floor.

As part of the new install we re-connected that loop and added an additional zone on the second floor.

we used one pump and two zone valves, and we didn`t use a heat exchanger ,now we`re getting calls for no heat on the second floor.

Both zones together don`t add up to much of a btu load so i don`t think that`s the problem,i`m just wondering if having two zones on two different floors is a no-no.

DanHolohan

Two zones are fine.

Did you install the boiler bypass line?

Jim S

yup.

lchmb

did you try

opening the zone valve and turning on the circulator? It could be you have a bad zone valve. I have used circs on multiple floor job's and never had an issue there..

Jim S

Went back today,turns out the water was passing through the boiler without picking up enough heat,had to relocate the supply to a tapping higher up on the boiler rather than off the bottom.

Seems kinda strange though,they were on opposite sides of the boiler,diagonal to each other but it still wouldn`t work.

What a b...h getting the damn plug out though,but that`s another story.