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Ensure there is the proper amount of air to the burner. Flame lifting from the burner is caused by too much air to the burner. The burners must be inspected by a qualified service technician at least once a year. DO NOT STORE COMBUSTIBLE MATERIALS, GASOLINE, OR OTHER FLAMMABLE VAPORS, LIQUIDS IN THE AREA OF THE APPLIANCE. NONCOMPLIANCE MAY RESULT IN FIRE OR EXPLOSION. DO NOT OBSTRUCT THE FLOW OF COMBUSTION OR VENTILATION AIR TO THE APPLIANCE. CHEMICAL VAPOR CORROSION Boiler corrosion and component failure can be caused by airborne chemical vapors. Spray can propellants, cleaning solvents, refrigerants, calcium or sodium chloride (water softener salts), waxes, and process chemicals are typical compounds that are potentially corrosive. These materials are corrosive at very low concentration levels with little or no odor to reveal their presence. Products of this sort should not be stored near the boiler. Air which is brought in contact with the boiler should not contain any of these chemicals. The boiler should be provided with air from outdoors when installed in environments having corrosive atmospheres. CIRCULATION PUMP Refer to the pump manufacturer's schedule of maintenance for frequency and method of lubricating the pump and motor. Inspect the pump once a month for leaky mechanical seals and/or O-rings and loose or damaged components. Contact a qualified service agent to replace or repair parts as required. 8 FIGURE 3. POINT TO POINT WIRING DIAGRAM 9 NEW BOILER LIMITED WARRANTY A. O. Smith Corporation, the warrantor, extends the following LIMITED WARRANTY to the owner of this hydronic boiler: 1. If within TEN years after initial installation of the boiler, the heat exchanger shall prove upon examination by the warrantor to be defective in material or workmanship, the warrantor, at his option, will exchange or repair such part or portion. This term is reduced to FIVE years if this boiler is used for volume hot water supply purposes other than hydronic space heating. a. This warranty is extended to the owner for all other parts or portion during the FIRST year following initial installation of this boiler. b. The warranty on the repair or replacement of the part or portion will be limited to the unexpired term of the original warranty. 2. CONDITIONS AND EXCEPTIONS This warranty shall apply only when the boiler is installed in accordance with local plumbing and building codes, ordinances and regulations, the printed instructions provided with it and good industry practices. In addition, an appropriately sized safety relief valve certified to the ASME Boiler and Pressure Vessel Code must have been installed and fresh water used for filling and makeup purposes; a. This warranty shall apply only when the boiler is used: (1) at temperatures not exceeding the maximum setting of its operative and/or high limit control; (2) at water pressure not exceeding the working pressure shown on the boiler; (3) when filled with boiler water, free to circulate at a...

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