Bradford-White Corp ULTRA HIGH EFFICIENCY COMMERCIAL GAS WATER HEATER Chemical Vapor Corrosion

CHEMICAL VAPOR CORROSION

Corrosion of the flue ways and vent system will occur if air for combustion contains certain chemical vapors. Such corrosion may result in poor combustion and create a risk of asphyxiation, as well as reducing the life of the water heater. Spray can propellants, cleaning solvents, refrigerator and air conditioning refrigerants, swimming pool chemicals, calcium and sodium chloride, waxes and process chemicals are corrosive. Products of this sort should not be stored near the water heater or outside by the air intake (if applicable).

TYPICAL INSTALLATION ILLUSTRATION

CAUTION

If the building cold water supply has a back-flow preventer, check valve or water meter with check valve provisions for thermal expansion of water in the hot water system must be provided.

Figure 4. Typical Front Inlet Connection Figure 5. Typical Front Inlet Connect with Storage Heater

Figure 6. Typical Two Water Heater Connection

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