WarningsKeep the area around a boiler clear of combustible materials, gasoline, and otherflammable vapors and liquids.Ensure combustion air is not drawn from areas containing corrosive air such asswimming pools or spas, including air directly next to outdoor pools and spas.Ensure that a boiler is not exposed to water leaks from piping or components locatedoverhead, including condensation from uninsulated cold water lines overhead.Protect the gas ignition system components from water (dripping, spraying, rain, etc.)during appliance operation and when servicing (pump replacement, condensate trapservicing, control replacement, etc.).Ensure that combustible materials do not make contact with exposed water pipingand associated components (relief valves, circulators, etc.). Check local codes forrequired clearances and/or provide adequate insulation.3.2.1 Factors to consider for best installation conditionsInstall the boiler in areas where the combustion air source is not subject to chemical fouling oragricultural vapors. Exposure to corrosive chemical fumes such as chlorinated and/orfluorinated hydrocarbons can reduce the life of a boiler. See list of Known contaminants on page6. For this reason, do not use the indoor air venting option (using air surrounding the boiler) in alaundry room. Similarly, ensure any direct vent air source is not near a clothes dryer exhaustterminal. Avoid agricultural applications where the boiler and/or the intake air source areaffected by ammonia and/or dust.Avoid installing a boiler where water leakage will cause damage; for example, above carpeting.If unavoidable, install a suitable drain pan under the appliance.Other factors to consider:The minimum clearance requirements for combustible materials (see Table 4 ).For adequate servicing, we recommend a minimum 30" clearance at the front and 12" above theboiler. Check local codes for additional access and service clearance requirements.At a new construction site, or during renovations:Take action to protect the boiler from drywall dust or other construction relatedcontaminantsEnsure combustion air is drawn from a clean source (e.g., outdoors)Isolate the boiler from interior dust sources. Do not seal boiler case openings directly whenfiring - allow for air circulation and ventilation in the immediate area.16Section: Installation