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P/S - primary pump control

BigJoe_2
BigJoe_2 Member Posts: 7
in THE MAIN WALL
Do the fine gents on the wall usually wire the primary pump to be constant circulation? How else can it be done. I have 2 zone system with an indirect, through a Taco 503 w/ priority. Thanks

Comments

  • Joe Mattiello
    Joe Mattiello Member Posts: 738
    SR503 wiring for system pump

    Hi there you can use the SR503 to energize a system pump, but you will have to give up the end switch to do it. Simply add a jumper from the h terminal to X1 terminal, and bring one leg of the system pump to ZR terminal. Alternatively, you can use the SR503-EXP, or the SR504 which have ZC/ZR terminals. Add the system pump to ZR terminal, and save the XX terminals for a low voltage signal to TT terminals on the boiler.


    Taco, Inc.
    Joe Mattiello
    Technical Service Technician
    joemat@taco-hvac.com
    401-942-8000 X 484
    www.taco-hvac.com
    Joe Mattiello
    N. E. Regional Manger, Commercial Products
    Taco Comfort Solutions
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