INSULATION BLANKETS
Insulation blankets available to the general public for external use on gas water heaters are not required for use on your water heater. The purpose of an insulation blanket is to reduce the standby heat loss encountered with storage tank water heaters. Your water heater meets or exceeds the current edition of ASHRAE/IES 90.1 standards with respect to insulation and standby loss requirement making an insulation blanket unnecessary.
WARNING
Should you choose to apply an insulation blanket to this heater, you should follow these instructions. Failure to follow these instructions can result in fire, asphyxiation , serious personal injury or death.
•Do not apply insulation to the top of the water heater, as this will interfere with safe operation.
•Do not cover the outer door, thermostat or temperature & pressure relief valve.
•Do not allow insulation to come within 2" (5cm) of the floor to prevent blockage of combustion air flow to the burner.
•Do not cover the instruction manual. Keep it on the side of the water heater or nearby for future reference.
•Do obtain new warning and instruction labels from the manufacturer for placement on the blanket directly over the existing labels.
•Do inspect the insulation blanket frequently to make certain it does not sag, thereby obstructing combustion air flow.
HIGH ALTITUDE INSTALLATIONS
Water heaters covered in this manual have been tested and approved for installation at elevations up to 7,700 feet (2,347
m)above sea level. For installation above 7,700 feet (2,347 m), the water heater’s Btu input should be reduced at the rate of 4 percent for each 1,000 feet (305 m) above sea level which requires replacement of the burner orifice in accordance with the National Fuel Gas Code ANSI Z223.1/ NFPA 54. Contact your local gas supplier for further information.
Failure to replace the standard orifice with the proper high altitude orifice when installed at elevations above 7,700 feet (2,347 m) could result in improper and inefficient operation of the water heater, producing carbon monoxide gas in excess of the safe limits. This could result in serious injury or death. Contact your local gas supplier for any specific changes that may be required in your area.
Upon completion of derating of the heater, adjustment to the gas pressure regulator may be required. See CHECKING THE
INPUT section in this manual for inlet and manifold pressure requirements.
Also due to the input rating reduction required at high altitudes, the output rating of the appliance is also reduced and should be compensated for in the sizing of the equipment for application.
CIRCULATING PUMP
A circulating pump is used when a system requires a circulating loop or there is a storage tank used in conjunction with the heater. Refer to the piping diagrams at rear of manual for electrical hookup information and install in accordance with the current edition of the National Electrical Code ANSI/NFPA No. 70. In Canada refer to Canadian Electrical Code CSA C22.1.
Only all bronze circulating pumps are used with commercial water heaters. Although circulators are oiled and operated by the manufacturer some circulators must be oiled again before operating. Please refer to manufacturer’s instructions.
INSTALLATION INSTRUCTIONS
REQUIRED ABILITY
INSTALL ATION OR SERVICE OF THIS WATER HEATER REQUIRES ABILITY EQUIVALENT TO THAT OF A LICENSED TR ADESMAN IN THE FIELD INVOLVED. PLUMBING, AIR SUPPLY, VENTING, ELECTRICAL AND GAS SUPPLY WORK ARE REQUIRED.
LOCATING THE HEATER
WARNING
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 PILOT OR MAIN BURNER FLAMES CAUSING FIRE OR EXPLOSION. SOME LOCAL CODES PERMIT OPERATION OF GAS APPLIANCES IF INSTALLED 18 INCHES (45.7 CM) 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 (7.6 CM) in any direction. If the heater is
4
