trouble with baseboard

mike638

just installed baseboard heating in house when zone 1 calls for heat zone 2 also gets hot someone told me to add check valves so water does not get pulled from one zone to another is thi true

Big Ed_4

Flow Control Valves

Hot water will rise into the other zone .…





Cooler water is more dense then Hot water ,so the hotter water will rise and the cooler water will fall , creating a flow up the supply riser ... It is called a gravity flow...



You need to use flow control valves when running multiple zones or if the boiler is maintaining a temperature...



Flow control valves control the direction of flow and counter the gravity forces .…



Flow Control Valves = weighted flow valves , spring loaded check valves and zone valves ...



...

Charlie from wmass

Could be a wiring issue

any photos you have of the install could help. Flow Checks can help. did the pumps have IFC in the model number? Is it zoned by pumps or zone valves?

Timco

pump location

I have found systems where return mounted pumps shove water into the supply manifold and the water takes the path of least resistance to get back to the return manifold. Again, IFC pumps, under-slung return lines, spring / flow checks, and so on will fix this. Good near boiler piping practices ensure this does not happen and is the mark of a real pro.