15
MAINTENANCE
WARNING
DISCONNECT FROM ELECTRICAL SUPPLY BEFORE
SERVICING UNIT.
FOR YOUR SAFETY, WATER HEATER SERVICE SHOULD BE
PERFORMED ONLY BY A QUALIFIED SERVICE TECHNICIAN.
READ THE GENERAL SAFETY INFORMATION SECTION FIRST.
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.
MAIN BURNER -FIG. 1
Check main burner every 12 months for proper flame
characteristics. This is done by removing door(s) on heater, fig.
1. The main burner should provide complete combustion of gas;
ignite rapidly; give reasonably quiet operation; cause no excessive
flame lifting from burner ports. Make sure that the flow of
combustion and ventilation air is not blocked.
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. Also check AIR
REQUIREMENTS.
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 the blower switch to “OFF” position and allow the burner to
cool. Remove the burner and clean with a soft brush. Clean
main burner orifice with a suitable soft material.
HIGH TEMPERATURE LIMIT SWITCH
(Single-UseType Energy Cut Off)
The thermostat has a built-in limit switch which will actuate in
case of excessive water temperatures. The heater cannot be
relit until the ECO (labeled as single-use type) is replaced It is
important that a serviceman be called to determine the reason
for limit operation and thus avoid repeated thermostat
replacement. Lower the temperature adjustment dial setting on
new control.
VENTING SYSTEM (S)-FIG. 10
HAVE VENTING SYSTEM CHECKED EVERY SIX MONTHS
FOR OBSTRUCTIONS AND/OR DETERIORATION IN VENT
PIPING.
POWER VENTER MAINTENANCE
CAUTION
The air flow restrictor screen on the inlet side of the blower unit
should be checked periodically for any accumulation of dust and
lint. Any build up of dirt in the screen can result in insufficient
dilution air and excessive vent temperatures that could cause
heat damage to the PVC pipe.
The venter must be inspected four times a year. Points of
inspection are:
1. MOTOR - Motor must rotate freely.
2. WHEEL - Wheel must be clean of soot, ash, lint or any other
coating which inhibits either rotation or air flow. Remove all
foreign material from vent system before operating.
3. The pressure switch part inside the power venter must be open
and free from deposits of ssot, carbon, etc.
For safety and satisfactory operation it is recommended that the
heater be checked once a year by a competent service person.
T & P VALVE
At least once a year, the temperature and pressure relief valve
must be checked to ensure that it is in operating condition. Lift
the lever at the top of the valve several times until the valve seats
properly and operates freely.
DANGER
THE WATER PASSING OUT OF THE VALVE DURING THIS
CHECKING OPERATION MAY BE EXTREMELY HOT. AVOID
CONTACT AND DISCHARGE SAFELY TO PREVENT WATER
DAMAGE.
DRAINING (T)-FIG. 1
If the heater is to be shut off and exposed to freezing temperatures,
it must be drained. Water, if left in the tank and allowed to freeze,
will damage the heater.
•
Turn off the gas and cold water inlet valve to the heater.
•
Open a nearby hot water faucet and the heater drain valve.
•
BE CAREFUL TO GRASP THE DRAIN VALVE HANDLE SO
THAT THE HAND IS NOT EXPOSED TO HOT WATER. IF
DESIRED, A HOSE MAY BE CONNECTED TO THE DRAIN
VALVE TO CARRY THE WATER AWAY.
DANGER:
The water MAY BE HOT.
•
The drain valve must be left open during the shutdown period.
•
To restart heater, refer to the FILLING instructions under
OPERATION.
Periodically open the drain valve and allow the water to run until
it flows clean. This will help prevent sediment build-up in the
tank.
It is normal for lime and scale deposits to form within the tank.
Such deposits will not be removed by periodic draining. It is
necessary to chemically delime the affected parts in water areas
where such deposits are encountered. See page 2 for
recommended deliming information.
CONDENSATION
Water vapor can condense on the cooler surfaces of the tank
