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MAINTENANCE
Draining and Flushing
It is recommended that the user drain and fl ush the tank
every 6 months to remove sediment that may build up during
operation. The water heater should be drained if being shut
down and exposed to freezing temperatures. To drain the
tank, perform the following steps:
1.
Turn off the gas to the water heater at the manual gas
shut-off valve.
2.
Turn off the electrical supply to the water heater.
3.
Close the cold-water inlet valve.
4.
Open a nearby hot-water faucet.
5.
Connect a hose to the drain valve and terminate it to an
adequate drain.
Note: The drain hose should be rated for at least 93°C
(200°F). If the drain hose does not have this rating,
open the cold-water inlet valve and a nearby hot-water
faucet until the water is no longer hot.
6.
Open the water heater drain valve and allow all the
water to drain from the tank. Flush the tank with water as
needed to remove sediment.
7.
Close the drain valve, refill the tank, and restart the
heater as directed under "Water Heater Operation".
If the water heater is going to be shut down for an extended
period, the drain valve should be left open and the gas supply
turned off.
Important: Condensation may occur when refi lling the tank
and should not be confused with a tank leak.
Routine Preventative Maintenance
(Homeowner/User)
Important: If you lack the necessary skills required to properly
perform this visual inspection, you should not proceed, but
get help from a qualifi ed service technician.
At least annually, a visual inspection should be made of the
venting and air supply system, piping systems and main
burner. Check the water heater for the following:
•
Build up of soot and carbon on the main burner. Check
for a soft blue flame (see Figure 36).
•
Leaking or damaged water and gas piping.
•
Presence of flammable or corrosive materials in the
installation area.
•
Presence of combustible materials near the water heat-
er.
•
Verify proper operation after any service is performed on
this water heater.
Gas Control
There are no user serviceable parts in this control. The control
is supplied with tamper resistant screws. DO NOT attempt
to repair or adjust the control. If you experience problems,
discontinue use and replace the control immediately.
Continuing to use a damaged control could result in fi re and/or
explosion.
If you wish to verify that the water heater is operating
properly:
1.
Make sure there is power to the water heater.
2.
Make sure that the gas is turned on to the water heater.
3.
Initiate a call for heat by either drawing hot water from
a nearby faucet or raising the temperature setting (see
section "Temperature Regulation").
4.
If an error code appears proceed to the "Troubleshooting"
section.
Temperature and Pressure Relief Valve
Explosion Hazard
•
If the temperature and pressure relief valve
is dripping or leaking, contact a qualifi ed
service technician.
•
Do not plug valve.
•
Do not remove valve.
•
Failure to follow these instructions can
result in death or an explosion.
Manually operate the temperature and pressure relief valve pe-
riodically to make sure it is working properly (see Figure 37). To
prevent water damage, the valve must be properly connected to a
discharge line that terminates at an adequate drain. Standing clear
of the outlet (discharged water may be hot), slowly lift and release
the lever handle on the temperature and pressure relief valve to
allow the valve to operate freely and return to its closed position. If
the valve fails to completely reset and continues to release water,
immediately shut off the manual gas valve and the cold-water inlet
valve and call a qualifi ed service technician.
TEMPERATURE AND
PRESSURE RELIEF VALVE
DISCHARGE LINE TO DRAIN
Figure 37
– 27 –
WARNING
MANUAL RELIEF VALVE
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Troubleshooting
