Water Piping System | Piping Installation |
Water temperature over 125°F (52°C) can cause severe burns
instantly resulting in severe injury or death.
Children, the elderly, and the physically or mentally disabled are at highest riskfor scald injury.
Feel water before bathing or showering.
Temperature limiting valves are available.
Read instruction manual for safe temperature setting.
Piping, fittings, and valves should be installed according to the installation drawing (Figure 9). If the indoor installation area is subject to freezing temperatures, the water piping must be properly insulated.
The water supply pressure should not exceed 80 psi. If this occurs, a pressure reducing valve with a bypass should be installed in the cold water inlet line. This should be placed on the supply to the entire house in order to maintain equal hot and cold water pressures.
IMPORTANT:
•Heat must not be applied to the water fittings on the heater as they may contain nonmetallic parts. If solder connections are used, solder the pipe to the adapter before attaching the adapter to the hot and cold water fittings.
•Always use a good grade of joint compound
and be certain that all fittings are tight. IMPORTANT: DO NOT over apply joint compound.
NOTE: To protect against untimely corrosion of hot and cold water fittings, it is strongly recommended that
1.Install the water piping and fittings as shown in Figure 9. Connect the cold water supply (3/4" NPT) to the fitting marked "Cold". Connect the hot water supply (3/4" NPT) to the fitting marked "Hot".
2.The installation of unions in both the hot and cold water supply lines are recommended for ease of removing the water heater for service or replacement.
3.Some local codes may require, and the manufacturer of this water heater recommends, installing a mixing valve or an
shown in Figure 9. These valves reduce the
4.Some local codes may require, and the manufacturer of this water heater recommends, installing a pressure reducing valve (PRV) in the cold water inlet line where it enters the residence as shown in Figure 9.
5.If installing the water heater in a closed water system, install an expansion tank in the cold water line as specified under "Closed System/Thermal Expansion."
6.Install a shut off valve in the cold water inlet line. It
should be located close to the water heater and be easily accessible. Know the location of this valve and how to shut off the water to the heater.
7.Install a discharge line from the temperature and pressure relief valve in the opening marked "T & P RELIEF VALVE". See Figure 10 and the "Temperature and Pressure Relief Valve" section.)
Heat Trap - The top of the heat trap must be higher than the storage tank of the water heater.
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Drain Air Gap
*If an adequate drain is not available for the condensate drain lines then a condensate pump should be used. DO NOT discharge the condensate drain lines into the metal drain pan.
FIGURE 9.
10
