Installing the water heater.
This water heater must be installed in accordance with these instructions, local codes, utility company requirements, and/or in the absence of local codes, use the latest edition of the American National Standard/National Fuel Gas Code. A copy can be purchased from either the American Gas Association, 400 North Capitol Street Northwest, Washington, DC 20001 as ANSI standard Z223.1 or National Fire Protection Association, 1 Batterymarch Park, Quincy, MA 02269 as NFPA 54. In Canada, the latest edition of the CSA B149.1 Natural Gas and Propane Installation, and the Canadian Electrical Code, CSA C22.1 Part 1, in the absence of local codes.
WARNING: Combustible construction refers to adjacent walls and ceilings and should not be confused with combustible or flammable products and materials. Combustible and/or flammable products and materials should never be stored in the vicinity of this or any gas appliance.
Location
The water heater should not be located in an area where leakage of the heat exchanger or connections will result in damage to the area adjacent to it or to lower floors of the structure.
When such areas cannot be avoided it is recommended that a suitable catch pan, adequately drained, must be installed under the water heater.
The pan must not restrict combustion air flow.
A gas fired water heater or any other appliance should not be installed
in a space where liquids which give off flammable vapors are to be used or stored. Such liquids include gasoline, LP gas (butane or propane), paint or adhesives and their thinners, solvents or removers.
Because of natural air movement in a room or other enclosed space, flammable vapors can be carried some distance from where their liquids are being used or stored. The open flame of the water heater's main burner can ignite these vapors causing an explosion or fire which may result in severe burns, death or property damage.
The water heater must be located so it is
not subject to physical damage, for example, by moving vehicles, area flooding, etc.
If the water heater is installed in a garage, it should be installed so that the direct ignition system and main burner are no less than 18 inches above the garage floor.
Raising the gas fired water heater will reduce BUT NOT eliminate the possibility of lighting the vapor of any flammable liquids which may be improperly stored or accidentally spilled.
The water heater should be installed as close as practical to the vent termination to minimize vent length and the number of elbows required for venting.
The water heater should be installed with the proper venting materials and termination suitable for Category III venting.
Failure to install and properly venting the water heater to the outdoors as outlined in the Venting Section of this manual can result in unsafe operation.
Long hot water lines should be insulated to conserve water and energy.
The water heater and water lines should be protected from exposure to freezing temperatures.
Do not install the water heater in bathrooms, bedrooms, any occupied rooms normally kept closed, or in outdoor areas.
Do not install the water heater in small, poorly ventilated rooms, or in air tight rooms with
Do not install water heater where subject to vibrations.
Do not install the water heater in Recreational Vehicles, Mobile Homes, Boats and other Watercrafts.
Do not install the water heater near vents for heating or cooling. A minimum of 4 feet should be maintained.
Minimum clearance from combustible
construction is 1/2 | sides, 0 rear (with |
support bracket); 12 | from the bottom; |
12 
from the front of the water heater; and 12 
from the top (24 
from front and top is recommended for servicing purposes). If the clearances stated on the Instruction/Warning Label, located on the front panel of the heater differ, install the water heater according to the clearances stated on the label.
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