IMPORTANT: The water heater should be located in an area where leakage of the tank or connections will not result in damage to the area adjacent to the water heater or to lower floors of the structure. Due to the normal corrosive action of water, the tank will eventually leak after an extended period of time. Also any external plumbing leak, including those from improper installation, may cause early failure of the tank due to corrosion if not repaired. If the homeowner is uncomfortable with making the repair a qualified technician should be contacted. A suitable metal drain pan should be installed under the water heater as shown below, to help protect the property from damage which may occur from condensate formation or leaks in the piping connections
or tank. The pan must limit the water level to a maximum depth of
METAL
DRAIN
PAN
PIPED TO AN
ADEQUATE DRAIN
AT LEAST 2” GREATER THAN THE
DIAMETER OF THE WATER HEATER.
EXHAUST FAN |
REVERSE FLOW |
OF GASES |
FIGURE 1.
Clearances and Accessibility
NOTE: Minimum clearances from combustible materials are stated on the rating plate adjacent to the gas control valve/thermostat of the water heater.
The water heater is certified for installation on a combustible floor.
•IMPORTANT: If installing over carpeting, the carpeting must be protected by a metal or wood panel beneath the water heater. The protective panel must extend beyond the full width and depth of the water heater by at least three inches (76.2mm) in any direction; or if in an alcove or closet installation, the entire floor must be covered by the panel.
•Figure 2 may be used as a reference guide to locate the specific clearance locations. A minimum of 24 inch- es of front clearance should be provided for inspection and service.
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FRONT
24” MINIMUM SIDES
FOR SERVICE
TOP
VIEW
Water heater life depends upon water quality, water usage, water temperature 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
FIGURE 2.
State of California
NOTE: The water heater must be braced, anchored, or strapped to avoid moving during an earthquake. Contact local utilities for code requirements in your area, visit http:// www.dsa.dgs.ca.gov, or call
•Sensors mounted in the drain pan that trigger an alarm or turn off the incoming water to the water heater when water is detected.
•Sensors mounted in the drain pan that turn off the water supply to the entire home 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.
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