and the physically or developmentally disabled. If anyone using hot water from this heater fits into one of these groups or if there is a local code or state law requiring a certain temperature water at the hot water tap, then you must take special precautions. In addition to using the lowest possible temperature setting that satisfies your hot water needs, a means such as a Mixing Valve should be used at the hot water taps used by these people or at the water heater (see Figure 3). Mixing valves are available at plumbing supply or hardware stores. Consult a Qualified Installer or Service Agency. Follow the mixing valve manufacturer’s instructions for installation of the valves. Before changing the factory setting on the thermostat, read the “Temperature Regulation” section in this manual.
FACTS TO CONSIDER ABOUT LOCATION
Carefully choose an indoor location for the new water heater, because the placement is a very important consideration for the safety of the occupants in the building and for the most economical use of the appliance. This water heater is not for use in manufactured (mobile) homes or outdoor installation.
Whether replacing an old water heater or putting the water heater in a new location, the following critical points must be observed:
1.Select a location indoors as close as practical to the vent terminal or location to which the water heater vent piping is going to be connected, and as centralized with the water piping system as possible.
2.A
3.Selected location must provide adequate clearances for servicing and proper operation of the water heater.
4.Avoid locations that could cause the water heater to freeze from outside air.
5.Selected location must provide access to a properly grounded electrical branch circuit. A dedicated circuit is preferred. Do not use a GFI outlet.
Important: Do not use an extension cord to connect the water heater to an electrical outlet.
Important: The electrical controls used inside the gas control of this water heater are polarity sensitive. Ensure the electrical supply is connected correctly in the receptacle box. Failure to connect correctly will prevent the unit from functioning properly.
Installation of the water heater must be accomplished in such a manner that if the tank or any connections should leak, the flow will not cause damage to the structure. For this reason, it is not advisable to install the water heater in an attic or upper floor. When such locations cannot be avoided, a suitable metal drain pan should be installed under the water heater. Drain pans are available at your local hardware store. Such a drain pan must have a clearance of at least 1.0 in. (2.5cm) greater than any point on the water heater’s outer jacket and must be piped to an adequate drain. The pan must not restrict combustion air flow. See Figure 1.
Water heater life depends upon water quality, water pressure and the environment in which the water heater is installed. Water heaters are sometimes installed in locations where leakage may result in property damage, even with the use of a drain pan piped to a drain. However, unanticipated damage can be reduced or prevented by a leak detector or water
•Sensors mounted in the drain pan that trigger an alarm or turn off the incoming water to the water heater when leakage is detected.
•Sensors mounted in the drain pan that turn off the water supply to the entire building when water is detected in the drain pan.
•Water supply
•Devices that will turn off the gas supply to a gas water heater while at the same time shutting off its water supply.
AVOIDAREAS WHERE FLAMMABLE LIQUIDS (VAPORS) ARE LIKELY TO BE PRESENT OR STORED (GARAGES, STORAGE AND UTILITY AREAS, ETC.): Flammable liquids (such as gasoline, solvents, propane (LP or butane, etc.) and other substances (such as adhesives, etc.)) emit flammable vapors which can be ignited by a gas water heater’s igniter or main burner. The resulting flashback and fire can cause death or serious burns to anyone in the area.
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