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Heat Timer EPU-CH overheating building
I manage a 19 unit 3-story brick apartment building in NJ with HB Smith 19A gas fired steam boiler with power flame burner. Re-commissioned Heat Timer EPU-CH controller but the device is overheating the building. I recalibrated it and am confident that is correct and not contributing to the problem. Heat Adjustment set to "A" and Heat System Sensor set to "X" so can't lower any more controls. The heat system sensor is strapped to the farthest return in the basement (last to get hot per instructions). Any ideas/suggestions on how I can reduce heat output or lower temp within building?