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running multiple floors off a single secondary loop in a primary/secondary HW system?

bambyy Member Posts: 1
I have a primary/secondary heating system with three secondary loops, in a brownstone in Brooklyn, The main secondary line is dedicated to the indirect fired domestic water heater on priority, the remaining two loops are for the Myson radiators on the three floors in the house, basement first floor second floor.
The house is joined to other brick houses on the full length of both Sides so heating is really only needed in the front and the back of each floor. Based on experience in this house the first floor requires as much heat as the basement and second floor combined.
The combined btu of the radiators on the first floor is approximately the same as the combined total of the basement and second floor together. Is there a practical way using a diverted T Monoflow system in pex, to run the basement and second floor together off one secondary line. Is this practical?
Can a single secondary loop, have 2 branches- 1 that runs around the bottom of the basement wall feeding the basement radiators and a second branch Running at the top of the first floor ceiling feeding the radiators On the second floor?
Are there any special design considerations repaired if I do this?
Thanks in advance for any help and suggestions.


    HVACNUT Member Posts: 5,890
    If in fact the system is piped in parallel and not in series, you can install thermostatic valves on the radiators. Otherwise, you probably need someone to come and look at your system in detail. Click "find a contractor" at the top of the page and make some calls.
  • nicholas bonham-carter
    nicholas bonham-carter Member Posts: 8,578
    Maybe you should first do a heat loss using the SlantFin app, and compare that to the radiator EDR in all parts of the house. Outdoor reset would be a fine thing to implement here, but the radiators should match the heat load.--NBC