Harsco Industrial SC-1500 Installation & Owner's Manual

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Harsco Industrial SC-1500 Installation & Owner's Manual Manual pdf 31 page image

P-K SONIC® Gas Fired BoilerTechnical Service 1.877.728.5351Revised: June 2, 2017Released: June 2, 2017 HARSCO Industrial, Patterson-Kelley 2017All Rights Reserved.1004905978 P-K SONIC NURO Installation andOwners Manual (Rev F Jun-2017).docxPage 223.4 Combustion AirAir Inlet Requirements – United StatesAir inlet requirements for the United States are established by NFPA 54/ANSI Z223.1 & NFPA/ANSI211. When air is supplied from inside the building, the total required volume shall be the sum of therequired volume for all the appliances located in the mechanical room. Adjacent rooms furnished withfixed openings communicating directly with the mechanical room are considered part of the requiredvolume. The minimum volume is 50 ft3 per 1,000 Btu/Hr (4.8 m3/kW) of installed appliance inputcapacity.Openings used to connect indoor spaces to obtain the required minimum volume shall be sized as follows: When rooms are on the same floor, each opening shall have an area equal to 1 square inch foreach 1,000 Btu/Hr (2,200 mm2/kW) of installed appliance input capacity, but not less than 100square inches. One opening should commence less than 12 inches above the floor and the otherless than 12 inches below the ceiling. The minimum dimension of air openings shall be 3 inches. When rooms are on different floors, each opening shall have an area equal to 2 square inches foreach 1,000 Btu/Hr (4,400 mm2/kW) of installed appliance input capacity.When combustion air is supplied from outside the building, the boiler room shall be provided with one or twoopenings to ensure adequate combustion air and proper ventilation.When using one permanent opening, the opening shall commence within 12 inches of the ceiling and shallcommunicate directly with the outdoors or through a vertical orhorizontal duct that communicates to the outdoors. Minimum free areaof the opening is 1 square inch for each 3,000 Btu/Hr (700 mm2/kW) ofinstalled appliance input capacity, and not less than the sum of theareas of all vent connectors in the room.When using two permanent openings, one opening shall commencewithin 12 inches above the floor and the other within 12 inches belowthe ceiling, preferably on opposite walls. The openings shallcommunicate directly, or by way of ducts, with free outdoor air. Theminimum net free area of the openings shall be calculated inaccordance with the following: When air is taken directly from outside the building, each opening(minimum of two, as outlined above), 1 square inch for each 4,000Btu per hour (550 mm2/kW) of total boiler input is required. When air is taken from the outdoors through a vertical duct intothe mechanical room, 1 square inch per 4,000 Btu per hour (550mm2/kW) of total boiler input is required.When air is taken from the outdoors through a horizontal duct intothe mechanical room, 1 square inch per 2,000 Btu per hour (1,100mm2/kW) of total boiler input is required.United States Minimum Area of Ventilation Openings per Boiler (Sq. In)Under no circumstancesshall the boiler room ever beunder a negative pressure.Particular care should betaken when exhaust fans,compressors, air-handlingunits, or other equipmentmay rob air from the boiler.Note that this equipmentmight be in rooms otherthan the boiler room. Thisapplies to both sealedcombustion andatmospheric roomcombustion air applications.SONIC BoilerMODELAIR SOURCEINDOOR AIR SUPPLY OUTDOOR AIR SUPPLYSAMEFLOORDIFFFLOORSONEOPENINGTWO OPENINGSDIRECTVERTDUCTHORIZDUCTSC-1500 1500 3000 500 375 375 750SC-2000 2000 4000 667 500 500 1000SC-3000 3000 6000 1000 750 750 1500SC-4000 4000 8000 1334 1000 1000 2000