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primary/secondary

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Paul S_3
Paul S_3 Member Posts: 1,291
in THE MAIN WALL
When using a regular atmospheric hot water boiler with primary/secondary piping....how do I control the primary pump? System is going to have four high temp baseboard zones.....and three radiant zones with 3 way mixing valves.....should that I use a relay to turn primary pump on whenever any zone call for heat or outdoor reset Paul s
ASM Mechanical Company
Located in Staten Island NY
Servicing all 5 boroughs of NYC.
347-692-4777
ASMMECHANICALCORP@GMAIL.COM
ASMHVACNYC.COM
https://heatinghelp.com/find-a-contractor/detail/asm-mechanical-company

Comments

  • Alan (California Radiant) Forbes
    Alan (California Radiant) Forbes Member Posts: 4,643
    The easiest way

    is to wire it off the boiler if it has a pump relay.



    If not, create you're own pump relay off the end switches as you say.
    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 slab
  • Paul S_3
    Paul S_3 Member Posts: 1,291
    primary/secondary

    Do you recommend one pipe primary secondary or two pipe on a residential home? Heat loss of home about 160000btuh's...thanks Paul s
    ASM Mechanical Company
    Located in Staten Island NY
    Servicing all 5 boroughs of NYC.
    347-692-4777
    ASMMECHANICALCORP@GMAIL.COM
    ASMHVACNYC.COM
    https://heatinghelp.com/find-a-contractor/detail/asm-mechanical-company
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