John Wood Takagi - 110-310-510 - Manual (Page 27)

27
CAUTION
Only pipes within the water heater are pro-
tected by the freeze protection system. Any
water pipes (hot or cold) located outside the
unit will not be protected. Properly protect
and insulate these pipes from freezing.
Maintenance and service
WARNING
Turn off the electrical power supply and close
the manual gas shutoff valve WARNING
and the manual water control valve before
servicing.
Clean the cold-water inlet filter. (Refer to diagram on the
right.)
Be sure that all openings for combustion and ventilation
air are not blocked.
The venting system should be checked annually for any
leaks, corrosion, blockages or damage.
The burner should be checked annually for dust, lint,
grease or dirt.
Keep the area around the water heater clear. Remove
any combustible materials, gasoline or any flammable
vapors and liquids.
In accordance with all local codes and common safety
practices, water discharged from the pressure relief
valve can cause severe burns instantly from scalding.
DO NOT touch the pressure relief valve.
If the relief valve discharges periodically, it may be due
to thermal expansion in a closed water supply system.
Contact the water supplier or local plumbing inspector on
how to correct this situation.
Visual check of burner flames (see below) through the
burner window in the burner assembly located at the
middle of the water heater.
Blue fl ame
Satisfactory
The manufacturer recommends having the unit checked
once a year or as necessary by a licensed technician.
If repairs are needed, any repairs should be done by a
licensed technician.
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Unit Draining and Filter Cleaning
Drain Plug (Small)
Water Valve
Gas Valve
Drain Plug with
Filter (Large)
1. Close the manual gas shut off valve.
2. Turn off power to the unit and wait a couple of seconds.
Turn on again.
3. Wait 30 seconds, and then turn off power to the unit, yet
again.
4. Close the water shut off valve.
5. Open all hot water taps in the house. When the residual
water flow has ceased, close all hot water taps.
6. Have a bucket or pan to catch the water from the unit’s
drain plugs. Unscrew the two drain plugs (Large and
small) to drain all the water out of the unit.
7. Wait a few minutes to ensure all water has completely
drained from unit.
8. Clean the filter: Check the water filter located within the
cold inlet. With a tiny brush,
clean the water filter of any
debris which may have accu-
mulated and reinsert the filter
back into the cold water inlet.
9. Securely screw the drain
plugs back into place. Hand-
tighten only.
Unsatisfactory
Flame
blowing up
Unsatisfactory
Flame
blowing up
Unsatisfactory
Red or
Yellow fl ame
Unsatisfactory
Red or
Yellow fl ame