FavoritePlease sign in to add this to your favorites. Topic: Hydronic Heating (Hot Water and Steam) Subtopic: Equipment Installation Desired Outcome: Prevent boiler from dry firing Multifamily HomesPrintCopy to ExcelEmail TitleSpecification(s)Objective(s) 5.3102.36a Primary low water cutoff For steam boiler:Mechanical low water cutoff will be installed in accordance with applicable codes and manufacturer's instructions at the proper water levelFor hot water boiler: Mechanical low water cutoff, electronic probe-type low water cutoff, or flow switch protection (in the case of coil boilers) will be installed in accordance with manufacturer specificationsA mechanical low water cutoff will be installed to include a discharge pipe and valve to allow for proper maintenance and safe discharge of boiler water during maintenance Ensure burner will not fire under low water conditionsEnsure water discharges safelyEnsure proper location/ installation 5.3102.36b Secondary low water cutoff A secondary low water cutoff (electronic or mechanical) will be installed in accordance with applicable codes and manufacturer's instructions no more than 2" below the primary low water cutoffA manual reset will be included on all secondary low water cutoffsA secondary low water cutoff (electronic or mechanical) will be installed in accordance with applicable codes and manufacturer's instructions at or above the minimum safe water level as determined by the manufacturer; the primary low water cutoff shall be a minimum 2" above this elevation Ensure backup to the primary systemEnsure proper installation locationEnsure water discharges safely 5.3102.36c Control integration If a central energy management system is available, low water cutoff will be connected to provide alarm Support an immediate response to low water conditions 5.3102.36d Testing low water cutoffs for steam boilers only Primary low water cutoff: Water level will be reduced to test cutoff operation using the following sequence:Operate boiler (burner)Open discharge valveNote water level when burner stops firingSecondary low water cutoff: Secondary low water cutoff will be tested in a similar manner as the primary Ensure proper working conditionsEnsure proper discharge 5.3102.36e Education Completed work will be reviewed with the building/property management team and operations staffBuilding/property management team and operations staff will be educated on the safe and efficient operation and maintenance requirements of the installed item Ensure building/property management team and operations staff is informed of the safe, efficient operation and maintenance requirements of the installed item Previous Detail Next Detail Back to 5.3102 Equipment Installation Back to Top