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I have a Weil McLain SGO-5 for steam heat with a 5 gallon coil for a baseboard loop. My question is how do I wire the thermostat for the loop through the 832A switching relay and the L4006A aquastat so the boiler is only running when the loop calls. And the aquastat will break at temperature but allow the circulator to keep running.  I dont want to just hook up the aquastat to the relay on the burner so it is running to maintain water temperature when it doesn't need to run. Anybody got any ideas. The switching relay has T & T and X & X on it, if that helps.


  • geno54
    geno54 Member Posts: 43
    Loop wiring

    Haven't been on here for awhile. Sorry it's a bit late. Tstat for loop should go to TT on relay. XX terminals should parallel the thermostat for steam heat through the L4006. This way when the loop is calling wtr temp will go up the L4006 setting say 170 deg. But when the blr calls for steam the wtr temp will rise to 212. Make sure your circ is well below the wtr line. Hope that helped
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