QuickDraw®

WATER WITH SINGLE-WALL / DOUBLE-WALL (con't)

ELECTRICAL

The heater is wired for 120 volts and must be electrically grounded in accordance with local codes, or in the absence of local codes, with the latest edition of the National Electrical Code ANSI/NFPA. When unit is installed in Canada, it must conform to the CSA C22.1, Canadian Electrical Code, Part 1 and/or local electrical codes.

1.Water must be pumped continuously through the boiler when it is being fired.

2.Do not energize water heater or pumps until tank is full of water. Serious damage may result.

3.All wiring must be in accordance with all local, state, or federal codes.

4.Provide proper overload protection for the system's circulating pumps.

NOTE: Use only copper wire of proper sizing for incoming service. Damage resulting from use of aluminum wiring will be excluded from coverage under the warranty of this unit.

RELIEF VALVE PIPING

The water heater is supplied with a pressure and temperature relief valve, sized in accordance with ASME requirements. Each relief valve should be piped to a

suitable floor drain. No reducing coupling or other restriction can be installed in the discharge line.

MAINTENANCE

1.A preventive maintenance program should be established to assure a long, trouble-free life for the water heater.

2.Scale will normally form in the tank during operation and will accumulate on the bottom of the tank. The scale is formed from the natural chemicals in the water that precipitate out during the heating cycles. Some water supplies contain more of these chemicals than others, and the scale buildup will occur

more rapidly. Other factors affecting the scale buildup are the amount of hot water used and the temperature of the water. The more hot water used, the more fresh water containing the scale- forming chemicals is brought into the tank. As the temperature of the water increases, the rate of scale deposited will be increased. The unit should be inspected and cleaned as required by local water conditions.

PV500-24 03-99

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Section 24