Installation Considerations
locating the water heater
CAUTION
Property Damage Hazard
•All water heaters eventually leak.
•Do not install without adequate drainage.
When installing the heater, consideration must be given to proper location. Location selected should be as close to the stack or chimney as practicable, with adequate air supply and as centralized with the piping system as possible.
Fire or Explosion Hazard
Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.
Avoid all ignition sources if you smell gas.
Do not expose water heater controls to excessive gas pressure.
Use only the gas shown on the water heater rating label.
Maintain required clearances to combustibles.
Keep ignition sources away from faucets after extended periods of
Read instruction manual before
installing, using or servicing
water heater.
THERE IS A RISK IN USING FUEL BURNING APPLIANCES SUCH AS GAS WATER HEATERS IN ROOMS, GARAGES OR OTHER AREAS WHERE GASOLINE, OTHER FLAMMABLE LIQUIDS OR ENGINE DRIVEN EQUIPMENT OR VEHICLES ARE STORED, OPERATED OR REPAIRED. FLAMMABLE VAPORS ARE HEAVY AND TRAVEL ALONG THE FLOOR AND MAY BE IGNITED BY THE HEATER’S IGNITER OR MAIN BURNER FLAMES CAUSING FIRE OR EXPLOSION. SOME LOCAL CODES PERMIT OPERATION OF GAS APPLIANCES IN SUCH AREAS IF THEY ARE INSTALLED 18” OR MORE ABOVE THE FLOOR. THIS MAY REDUCE THE RISK IF LOCATION IN SUCH AN AREA CANNOT BE AVOIDED.
DO NOT INSTALL THIS WATER HEATER DIRECTLY ON A CARPETED FLOOR. A FIRE HAZARD MAY RESULT. Instead the water heater must be placed on a metal or wood panel extending beyond the full width and depth by at least 3 inches in any direction. If the heater is installed in a carpeted alcove, the entire floor shall be covered by the panel. Also, see the DRAINING requirements in MAINTENANCE Section.
THE HEATER SHALL BE LOCATED OR PROTECTED SO IT IS NOT SUBJECT TO PHYSICAL DAMAGE BY A MOVING VEHICLE.
FLAMMABLEITEMS,PRESSURIZED CONTAINERSORANYOTHER POTENTIALFIREHAZARDOUSARTICLESMUSTNEVERBEPLACED ON OR ADJACENT TO THE HEATER. OPEN CONTAINERS OR FLAMMABLE MATERIAL SHOULD NOT BE STORED OR USED IN THE SAME ROOM WITH THE HEATER.
THE HEATER MUST NOT BE LOCATED IN AN AREA WHERE IT WILL BE SUBJECT TO FREEZING.
LOCATE IT NEAR A FLOOR DRAIN. THE HEATER SHOULD BE LOCATED IN AN AREA WHERE LEAKAGE FROM HEATER OR CONNECTIONS WILL NOT RESULT IN DAMAGE TO ADJACENT AREA OR TO LOWER FLOORS OF THE STRUCTURE.
WHEN SUCH LOCATIONS CANNOT BE AVOIDED, A SUITABLE DRAIN PAN SHOULD BE INSTALLED UNDER HEATER. Such pans should be fabricated with sides at least 2” deep, with length and width at least 2” greater than diameter of heater and must be piped to an adequate drain. Pan must not restrict combustion air flow.
clearances
This water heater is approved for installation on combustible flooring (with NSF leg kit #9003425205) in an alcove when minimum clearance from any combustion construction are followed as indicated in Figure 6 and Table 4.
Inallinstallationstheminimumcombustibleclearancesfromventpiping shall be 6” (152mm). Vent piping passing through a combustible wall or ceiling must be a continuous run (no joints) and retain 6” (152mm) clearance unless an approved reducing thimble is used.
A service clearance of 24” (610mm) should be maintained from serviceable parts, such as relief valves, flue baffles, thermostats, cleanout openings or drain valves.
The units are approved for installation with side, rear and ceiling clearances as indicated below:
TABLE 4.
MINIMUM CLEARANCES TO COMBUSTIBLES IN INCHES (mm) | ||||
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MODEL | “A” RIGHT SIDE | “B” LEFT SIDE | “C” BACK | “D” CEILING |
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N71 120NE | 2” 51 mm | 2” 51 mm | 2” 51 mm | 12” 305 mm |
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N81 154NE | 2” 51 mm | 2” 51 mm | 2” 51 mm | 12” 305 mm |
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N100 180NE | 2” 51 mm | 2” 51 mm | 2” 51 mm | 12” 305 mm |
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N100 199NE | 2” 51 mm | 2” 51 mm | 2” 51 mm | 12” 305 mm |
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N100 200NES/A | 2” 51 mm | 2” 51 mm | 2” 51 mm | 12” 305 mm |
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N100 250NE/A | 2” 51 mm | 2” 51 mm | 2” 51 mm | 12” 305 mm |
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N100 275NE/A | 2” 51 mm | 2” 51 mm | 2” 51 mm | 12” 305 mm |
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N85 310NE/A | 6” 152 mm | 6” 152 mm | 6” 152 mm | 12” 305 mm |
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N85 366NE/A | 6” 152 mm | 6” 152 mm | 6” 152 mm | 12” 305 mm |
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N85 390NE/A | 3” 76 mm | 3” 76 mm | 3” 76 mm | 12” 305 mm |
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TABLE 5.
MINIMUM CLEARANCES TO
MODEL | “A” RIGHT SIDE | “B” LEFT SIDE | “C” BACK | “D” CEILING |
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N71 120NE | 0” 0 mm | 0” 0 mm | 0” 0 mm | 12” 305 mm |
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N81 154NE | 0” 0 mm | 0” 0 mm | 0” 0 mm | 12” 305 mm |
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N100 180NE | 0” 0 mm | 0” 0 mm | 0” 0 mm | 12” 305 mm |
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N100 199NE | 0” 0 mm | 0” 0 mm | 0” 0 mm | 12” 305 mm |
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N100 200NES/A | 0” 0 mm | 0” 0 mm | 0” 0 mm | 12” 305 mm |
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N100 250NE/A | 0” 0 mm | 0” 0 mm | 0” 0 mm | 12” 305 mm |
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N100 275NE/A | 0” 0 mm | 0” 0 mm | 0” 0 mm | 12” 305 mm |
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N85 310NE/A | 3” 76 mm | 3” 76 mm | 3” 76 mm | 12” 305 mm |
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N85 366NE/A | 0” 0 mm | 0” 0 mm | 0” 0 mm | 12” 305 mm |
N85 390NE/A | 0” 0 mm | 0” 0 mm | 0” 0 mm | 12” 305 mm |
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