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Monoflow tee system

Donald Lebnikoff
Member Posts: 9
I have a customer with two story mono-flow system. The system is all one zone. The customer is putting an addition on the house and would like to add a separate zone off the boiler. My concern is that the separate zone might create a flow issue when both zone are calling for heat. Or do i tell them to re-pipe the whole the system in primary- secondary or any other piping options. Any input would be greatly appreciated.
0
Comments
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Why not
leave the existing monoflow zone on it's own pump and add another pump for the new zone? I'd pipe the new zone 2-pipe instead of monoflow, no?
And if the new addition is a small heating load, definately add primary-secondary to keep the boiler happy when only the smaller zone is calling for heat.8.33 lbs./gal. x 60 min./hr. x 20°ΔT = 10,000 BTU's/hour
Two btu per sq ft for degree difference for a slab0 -
we have
had good sucess using Dans book HOW COME. if you can pipe the new zone right from the boiler and you have a good air seperator you should be OK.
lets see what others have to say0 -
Monoflow systems:
I've seen more mixed monoflow/ series loop systems in older houses where I work than any other piping systems around.
Just make the new zone a separate zone.
I've never seen one not work. The biggest problem I ever saw with them is that the added circulator was wired direct and didn't start the burner.0
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