Switching Relay

Discussion in 'HVAC Heating & Cooling' started by drspookie, Jul 10, 2008.

  1. drspookie

    drspookie New Member

    Jul 10, 2008
    I currently have an oil fired boiler with a Honeywell R8182DH Primary Control and Aquastat controller. I am replacing this unit with a coal fired boiler. The boiler I have purchased has an aquastat controller, but it only controls the internal temp of the boiler and the automatic damper. You need to control the circulator pump with a separate unit. My question is this - Is there a way that I can use the current Honeywell controller to activate and deactivate my circulator using my thermostat, even though it will not be controlling a burner, as it does on the oil boiler? Or would I simply be better off buying a switching relay such as the TACO SR 501? I am trying to save money if I can, but if it can't be done, I guess I have no other choice.
  2. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Sep 2, 2004
    Retired Systems engineer for defense industry.
    New England
    There are line voltage thermostats, but it would probably be easier to use your existing wiring to then control a relay like in the Taco unit to control the circulator.
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