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Can someone explain how the Honywell switching relay works on a steam system with Baseboard

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acl10
acl10 Member Posts: 349
in Strictly Steam
Can someone explain how the Honywell switching relay works on a steam system with Baseboard hotwater in the basement coming out of the steam boiler

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  • delta T
    delta T Member Posts: 884
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    What relay is it? There should be a number on it somewhere, lots of different variations on the 'honeywell switching relay'
  • delta T
    delta T Member Posts: 884
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    my guess is that you have an aquastat relay that fires the boiler until it reaches 180 or 190 degrees, and also turns on a pump for the baseboard zone.

    Are you having problems with it?
  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 15,523
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    Most likely the switching relay turns on the HW circulator pump at the direction of the thermostat located in the HW zone.
    New England SteamWorks
  • acl10
    acl10 Member Posts: 349
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    here is a picture of the model I have

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