Installation Manual - Unical Lattner Condensing Hot Water Boilers

Instructions for the installer3.16 - COMBUSTION AIR AND VENTILATIONOPENINGSProvisions for combustion and ventiiation air must be madein accordance with section 5.3, Air for Combustion and Ventilation,of the National Flue Gas Code, ANSI Z223.1/NFPA 54,or Sections 7.2, 7.3 or 7.4 of CAN/CGA B149, installationCodes, or appiicabie provisions of the local building codes.CAUTIONBOILER DAMAGE AND OPERATIONALFAILURESDue to insufficient or improper openings for combustionairand/or ventiiation of the boiler room.Provisions for combustion air and ventiiation arealways required,regardiess whether the combustion air istaken fromthe outside (sealed combustion) or inside (roomair for combustion).Insufficient ventilation of the boiler room can leadto high airtemperatures. This can result in boiler damage.All Air from inside the Building (room air)The closet shall be provided with two permanent openingscommunicating directly with an additional room(s). The totalinput of all gas utilization equipment installed in the combinedspace shall be considered in making this determination.Each opening shall have a minimum free area of 1 squareinch per 1,000 Btu per hour of total input rating of all gasutilization equipment in the confined space, but no less than100 square inches. One opening shall commence within 12inches (305 mm) of the top, and one opening shall commencewithin 12 inches (305 mm) of the bottom of the enclosure.The minimum dimension of air openings shall be not lessthan 4 inches (101 .6 mm).- Make sure that intake and exhaust openingsare sufficiently sized and no reduction or closureof openings takes place.- When the problem is not resolved, do not operatethe boiler.- Please note these restrictions and its dangersto the operator of the boiler.WARNINGBOILER DAMAGE !Due to contaminated air.- Boiler must be clear and free from combustiblematerials, gasoline and other flammable vaporsand liquids, and corrosive liquids and vapors.Never use chiorine and hydrocarbon containingchemicals (such as spray chemicals, solution andcleaning agents, paints, giues etc) in the vicinityof the boiler.- Do not store and use these chemicals in theboiler room.- Avoid excessive dust formation and buildup.NOTICEWhen one expects contaminated combustion air(near swimmingpools, chemical cleaning operations andhair salons),sealed combustion operation is recommended.DANGERFire danger due to flammable materials or liquids.- Do not store flammable materials and liquids inthe immediate vicinity of the boiler.25