John Wood Superflue Power Vent (before FVIR technology) - Manual (Page 14)

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Service and maintenance of the heater should be performed
at regular intervals. The following is a service recommenda-
tion for the homeowner.
At all times
• Keep flammable liquids, such as gasoline, paint
thinners, and glue away from the vicinity of the heater.
• Keep area around heater clean.
• Ensure that there is nothing obstructing the flow of com-
bustion and ventilation air.
CAUTION:
UNPLUG THE WATER HEATER BEFORE PERFORM-
ING THE FOLLOWING MAINTENANCE. WHEN FIN-
ISHED, REINSERT THE PLUG INTO THE ELECTRI-
CAL SOCKET. THE WATER HEATER WILL START UP
AGAIN AUTOMATICALLY.
General Upkeep
Make it a habit to look around the heater, the vent piping, and
the hot and cold water pipes. Do not allow any material to be
piled up against the heater. Do not place any object on top of
the vent pipes.
Every 3 – 6 months or as necessary:
• Clean lint from blower, top of heater. (procedure below)
• Flush a pail of water from the heater drain valve. (proce-
dure below)
Once per year:
• Inspect the Vent System (procedure below)
• Check Burner flame for normal blue flame pattern (see sec-
tion II)
• Cleaning of Combustion Chamber (scaling). (procedure
below)
• Check T&P Valve Operation (procedure below)
If any deficiencies or abnormalities are encountered during
these inspections call a qualified service technician.
Blower Maintenance:
As described above, inspect the top of the heater and
around the ventilation openings of the blower motor for any
lint and dust that may have accumulated.
Depending on the location of the heater, significant quantities
of lint may accumulate. The lint may obstruct the free flow of
air to the motor, and cause the motor run hotter than normal.
To clean any dust and lint, proceed as follows:
1. Unplug the water heater.
2. Using a nylon bristled paint or tooth brush, brush away
any lint. Pick up the lint with a cloth.
Better results can be achieved by using the small brush on a
vacuum cleaner to remove all lint and dust which have accu-
mulated on top of the heater, the drafthood, the air intake
openings of the drafthood, and motor ventilation openings.
Do not insert any foreign object into the ventilation
openings of the motor.
Impeller/Fin Cleaning:
1. Remove drafthood from unit by loosening 3 screws to the
blower housing, and 2 screws to top of water heater. Set
aside.
2. Using a nylon bristled paint or tooth brush and vacuum
cleaner, brush the dust/dirt from each impeller blade
while holding the vacuum close enough to collect the dis-
placed dust/dirt.
3. Replace drafthood using the same 5 screws from step
#1.
DANGER
RISK OF SCALDING
Hot water will cause third degree burns
in 6 seconds at 140°F (60°C)
in 30 seconds at 130°F (54°C)
in 5 minutes at 120°F (49°C)
13. To reactivate the system, turn the power off by
unplugging the power cord. Turn the gas control
switch to “ON”. Then, restore power plugging in
the power cord. The flashing LED will go off, indi-
cating that the lock–out has been reset.
14. After completing the First Lighting and Check Out
Procedure, turn the temperature dial to desired
temperature setting. Instruct the homeowner in the
use and setting of the control.
15. If the LED is on continuously, this indicates an
unserviceable fault in the gas control and it cannot be
reset. The complete gas control must be replaced.
Temperature Regulation
The temperature dial is adjusted to its lowest tem-
perature position when shipped from factory.
The temperature of the water can be selected by set-
ting of the temperature dial on the front of the gas
control (see Figure 11). The large arrow
position on the thermostat is the preferred starting
point for setting the temperature control. Each division
on the thermostat dial representes a 5°F (3°C) water
temperature change. Energy conservation is a con-
sideration when selecting the water temperature set-
ting.
For most economical operation, select a water tempera-
ture that is adequate for your needs. There is a hot water
scald potential if the thermostat is set too high.
In households with children, disabled or the elderly,
select a lower temperature setting. Valves for reducing
point–of–use temperature by mixing hot and cold
water are available. Consult a licensed plumber or the
local plumbing authority.
Should overheating occur or the gas supply fail to shut
off, turn off the manual gas valve to the appliance.
To Turn Off Gas to the Appliance
1. Turn the temperature dial to the lowest setting.
2. Turn the gas control switch to “Off”
3. Turn the manual gas valve in the gas supply line to
the heater to “OFF”
4. If the blower is still running, wait until it stops.
5. Unplug the electrical cord.
VII) SERVICE AND MAINTENANCE
General
Flooding and Fire
Should the water heater be subjected to flooding, fire,
or any unusual condition, shut off manual gas valve at
the inlet and pull the plug from the electrical recepta-
cle. Do not put the heater into operation until it has
been thoroughly checked by a qualified technician.