13
•
If the back draft cannot be corrected by the normal method or if
a suitable draft cannot be obtained, a blower type flue gas
exhauster must be employed to assure proper venting and
correct combustion.
HIGH TEMPERATURE LIMIT SWITCH
(Auto Reset Type Energy Cut Off)
TO RESET AUTOMATIC GAS SHUTOFF
This water heater is equipped with a automatic reset type high
limit (Energy Cutoff) sensor. The high limit switch interrupts the
pilot and main burner gas flow should the water temperature reach
205°F (96°C). The high limit will automatically reset when the water
temperature drops below 140°F (60°C).
WARNING
THE GAS VALVE MUST HAVE BEEN IN THE OFF POSITION FOR AT
LEAST 5 MINUTES. This waiting period is an important safety
step. Its purpose is to permit gas that may have accumulated in
the combustion chamber to clear. IF YOU DETECT GAS ODOR AT
THE END OF THIS PERIOD DO NOT PROCEED WITH LIGHTING.
RECOGNIZE THAT GAS ODOR, EVEN IF IT SEEMS WEAK, MAY
INDICATE PRESENCE OF ACCUMULATED GAS SOMEPLACE IN THE
AREA WITH RISK OF FIRE OR EXPLOSION. SEE THE FRONT PAGE
FOR STEPS TO BE TAKEN.
Before lighting the pilot and operating the heater, the following
conditions must exist:
•
Entire system filled with water.
•
Air purged from all lines and no leaks (gas and water).
•
All gas and water lines open.
SHOULD OVERHEATING OCCUR OR THE GAS SUPPLY FAIL TO
SHUT OFF, TURN OFF THE MANUAL GAS CONTROL VALVE TO THE
APPLIANCE.
SERVICE INFORMATION
The installer may be able to observe and correct certain problems
which may arise when the unit is put into operation. HOWEVER, it
is recommended that only qualified servicemen, using appropriate
test equipment, be allowed to service the heater.
FOR YOUR SAFETY AND SATISFACTORY OPERATION, IT IS
RECOMMENDED THAT THIS HEATER BE CHECKED ONCE A YEAR
BY A COMPETENT SERVICE PERSON.
USERS OF THIS APPLIANCE SHOULD BE AWARE THAT GAS
COMPONENTS WEAR OUT OVER A PERIOD OF TIME. THE GAS
CARRYING COMPONENTS OF THIS APPLIANCE SHOULD BE
INSPECTED FOR PROPER OPERATION PERIODICALLY BY A
QUALIFIED SERVICE TECHNICIAN.
PILOT AND MAIN BURNER
Check pilot and main burner (figure 8) every 12 months for proper
flame characteristics. This is done by removing door(s) on heater.
The main burner should provide complete combustion of gas;
ignite rapidly; give reasonably quiet operation; cause no excessive
flame lifting from the burner ports. Make sure that the flow of
combustion and ventilation air is not blocked.
PROPANE
NATURAL
FIGURE 8.
If proper flame characteristics are not evident, check for
accumulation of lint or other foreign material that restricts or blocks
the air openings in the heater or burner.
WARNING
SOOT BUILD-UP INDICATES A PROBLEM THAT REQUIRES
CORRECTION BEFORE FURTHER USE. CONSULT WITH A
QUALIFIED SERVICE TECHNICIAN.
Should the main burner or burner air openings require cleaning,
turn off the gas to the water heater. Follow "to turn off gas to
appliance" on pages 10 and 11 and allow the burner to cool.
Remove the burner and clean with a soft brush. Clean main burner
orifice with a suitable soft material. Follow lighting instructions on
pages 10 and 11 to put the water heater back in operation.
CHECK FOR GOOD FLOW OF COMBUSTION AND VENTILATING
AIR TO THE UNIT. MAINTAIN A CLEAR OPEN AREA AROUND THE
HEATER AT ALL TIMES. DO NOT STORE COMBUSTIBLES OR
FLAMMABLE LIQUIDS NEAR OR AROUND AN APPLIANCE.
CHECKING GAS INPUT
For appliance installation locations with elevation above 2000 ft.
(610m) refer to HIGH ALTITUDE INSTALLATIONS section of this
manual for input reduction procedure.
With this heater in operation, determine whether it is receiving the
full rated input of gas. This may be done by timing the gas meter
and measuring gas pressure with a gauge or manometer. When
the heater is operating at full capacity (full gas input) it should
consume approximately 1 cubic foot of gas in the time shown in
Table 3.
