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Correct thermostat for 1960 Smith boiler

Peter, your Magic Stat should have a cycle rate adjustment on it. The cycle rate is factory set for 6 cycles per hour and should be set for 3 cycles. Normally, if I remember correctly the adjustment is to turn the "A" screw on the back of the thermostat out one turn to change the cycles to 3 per hour, but double check your installation instructions to be sure.

Glenn Harrison Residential Service Tech

Althoff Industries Inc. Mechanical and Electrical Contractors

Crystal Lake, Illinois

Comments

  • Peter Harrison
    Peter Harrison Member Posts: 1
    Correct thermostat for 1960 smith boiler?

    I have a 1960 Smith boiler and a 6000 sqf building. And I am using a programable magic stat thermostat. I normally leave the heat at 65f durring the morning and on some days the boiler will kick in every 5 minutes is this normal.
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