torque when attaching gas supply pipe to thermostat gas inlet. The thermostat inlet has a pad for use with a backup wrench.
Apply joint compounds (pipe dope) sparingly and only to the male threads of pipe joints. Do not apply compound to the first two threads. Use compounds resistant to the action of liquefied petroleum gases. Do not use teflon tape on thermostat fittings.
DISCONNECT THE APPLIANCE FROM THE GAS SUPPLY PIPING SYSTEM DURING ANY SUPPLY PRESSURE TESTING EXCEEDING 1/2 PSI (3.5 kPa). GAS SUPPLY LINE MUST BE CAPPED WHEN DISCONNECTED FROM THE HEATER. FOR TEST PRESSURES AT 1/2 PSI (3.5 kPa) OR LESS, THE APPLIANCE NEED NOT BE DISCONNECTED, BUT MUST BE ISOLATED FROM THE SUPPLY PRESSURE TEST BY CLOSING THE MAIN MANUAL GAS VALVE.
BEFORE PLACING THE HEATER IN OPERATION, CHECK FOR GAS LEAKAGE. USE SOAP AND WATER SOLUTION OR OTHER MATERIAL ACCEPTABLE FOR THIS PURPOSE. DO NOT USE MATCHES, CANDLES, FLAME OR OTHER SOURCES OF IGNITION TO LOCATE GAS LEAKS.
RELIEF VALVE
A NEW TEMPERATURE AND PRESSURE RELIEF VALVE COMPLYING WITH THE STANDARD FOR RELIEF VALVES AND AUTOMATIC GAS SHUT OFF DEVICES FOR HOT WATER SUPPLY SYSTEMS, ANSI Z21.22 (CURRENT EDITION) MUST BE INSTALLED IN THE HEATER IN THE MARKED OPENING PROVIDED (SEE FIGURE 1). THE VALVE MUST BE OF A SIZE (INPUT RATING) THAT WILL BE ADEQUATE FOR YOUR SIZE HEATER.
Check the metal tag on the relief valve and compare it to the heater’s rating plate. The pressure rating of the relief valve must not exceed the working pressure shown on the rating plate of the heater. In addition, the hourly BTU rated temperature steam discharge capacity of the relief valve shall not be less than the input rating of the heater. NO VALVE IS TO BE PLACED BETWEEN THE RELIEF VALVE AND TANK. DO NOT PLUG THE RELIEF VALVE.
The drain line connected to this valve must not contain a reducing coupling or other restriction and must terminate near a suitable drain to prevent water damage during valve operation. The discharge line shall be installed in a manner to allow complete drainage of both the valve and line. DO NOT THREAD, PLUG OR CAP THE END OF THE DRAIN LINE.
VENTING
WARNING
NEVER OPERATE THE HEATER UNLESS IT IS VENTED TO THE OUTDOORS AND HAS ADEQUATE AIR SUPPLY TO AVOID RISKS OF IMPROPER OPERATION, FIRE, EXPLOSION OR ASPHYXIATION.
DO NOT OBSTRUCT THE FLOW OF COMBUSTION AND VENTILATING AIR. ADEQUATE AIR FOR COMBUSTION AND VENTILATION MUST BE PROVIDED FOR SAFE OPERATION.
VENT PIPE TERMINATION
Before installing water heater determine placement of vent pipe termination.
MAKE CERTAIN TO OBSERVE VENT LOCATION LIMITATION, SEE FIG'S 4 & 5.
CAUTION
Use only the vent kit assembly supplied with this water heater or if needed one of the three listed optional flue extensions. See
Figure 10 for possible combinations. VENTING OR TERMINATION WITH ANY OTHER KIT NOT LISTED IS NOT RECOMMENDED AND COULD AFFECT THE SYSTEMS PERFORMANCE AND RESULT IN A SAFETY HAZARD.
WARNING
MINIMUM CLEARANCES BETWEEN THE WATER HEATER AND COMBUSTIBLE AND NONCOMBUSTIBLE CONSTRUCTION ARE: 0 INCHES FROM SIDES, 0 INCHES FROM BACK, 4 INCHES FROM FRONT OF JACKET TO CLOSET DOOR AND 3 INCHES FROM TOP OF JACKET TO COMBUSTIBLE AND NONCOMBUSTIBLE MATERIAL. MINIMUM VENT CLEARANCE: 0 INCHES. PROVIDE 24 INCHES FRONT CLEARANCE FOR SERVICING AND ADEQUATE CLEARANCE BETWEEN THE JACKET TOP & CEILING FOR SERVICING THE FLUE AREA. (SEE FIGURE 3).
FIGURE 3
COMBUSTION AIR AND VENTILATION
When determining the installation location for a direct vent water heater, snow accumulation and drifting should be considered in areas where applicable.
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