SERIES 8800 & 8900 INSTALLATION AND OPERATING INSTRUCTIONSPage 4COMBUSTION AIR & VENTILATIONWARNING: This boiler/water heater must besupplied with combustion air in accordance withSection 5.3, Air for Combustion & Ventilation, ofthe latest revision of the National Fuel GasCode, ANSI Z223.1/ NFPA 54 and all applicablelocal building codes. Canadian installationsmust comply with CAN/ CGA B149.1 or .2Installation Code for Gas Burning Appliancesand Equipment, or applicable provisions of thelocal building codes. Failure to provide adequatecombustion air for this boiler/water heater canresult in excessive levels of carbon monoxidewhich can result in severe personal injury ordeath!To operate properly and safely this boiler/water heaterrequires a continuous supply of air for combustion.NEVER store objects on or around the boiler/water heater!CAUTION: Combustion air contaminated withfluorocarbons or other halogenated compoundssuch as cleaning solvents and refrigerants willresult in the formation of acids in the combustionchamber. These acids will cause premature failureof the boiler/water heater voiding the warranty!CAUTION: If the boiler/water heater is operated whilethe building is under construction it MUST beprotected from wood, concrete, sheet rock and othertypes of dust. Failure to properly protect the unitfrom construction dust will damage the unit voidingthe warranty!All Air From Inside The BuildingIf the boiler/water heater is to be located in a confi nedspace minimum clearances listed in Table 1 or 1A mustbe maintained between the boiler/water heater and anycombustible construction. When installed in a confi nedspace, Figures 1, 2, 3, 4 and 5, two permanent openingscommunicating with an additional room(s) are required.The combined volume of these spaces must havesuffi cient volume to meet the criteria for an unconfi nedspace. The total air requirements of all gas utilizationequipment, fireplaces, wood stoves or any type ofexhaust fan must be considered when making thisdetermination. Each opening must have a minimum freearea of 1 in2/1000 Btu/hr, 2200 mm 2/kW based on thetotal input rating of ALL gas utilization equipment in theconfined area. Each opening must be no less than100 in2, 64,516 mm2 in size. The upper opening mustbe within 12 in, 305 mm of, but not less than 3 in,76 mm from, the top of the enclosure. The bottomopening must be within 12 in, 305 mm of, but not lessthan 3 in, 76 mm from, the bottom of the enclosure.All Air From Outside The BuildingWhen installed in a confined space two permanentopenings communicating directly with, or by ductsto, the outdoors or spaces that freely communicate withthe outdoors must be present. The upper opening mustbe within 12 in, 305 mm of, but not less than 3 in,76 mm from, the top of the enclosure. The bottomopening must be within 12 in, 305 mm of, but not lessthan 3 in, 76 mm from, the bottom of the enclosure.Where directly communicating with the outdoorsor communicating with the outdoors through verticalducts, each opening shall have a minimum free areaof 1 in 2 /4000 Btu/hr, 550 mm 2 /kW of the total inputrating of all of the equipment in the enclosure.