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damage to the heat exchanger as a result of
freezing. In any areas subject to freezing
temperatures, Takagi strongly recommends
the use of its back flow prevention flue damper
(Part No. TK-TV03) to reduce the amount of
cold air entering through the exhaust venting
when the water heater is off.
If you will not be using your heater for a long
period of time or if the temperatures (including
the wind chill) will drop below 5 ºF (-15 ºC),
turn off your heater and drain the unit of water
(see ‘Unit Draining & Filter Cleaning’ section
above for draining instructions). This will keep
your unit from freezing and being damaged.
For indoor installation in areas where the
temperature will be well below freezing for
extended periods of time, use the included
“Extension cable” to relocate the internal
thermostat located on the fan motor to the
outdoors. This will sense the ambient air
temperature and turn on the internal heater
blocks on to prevent the heat exchanger
from freezing.
CAUTION:
Only the pipes within the water
heater are protected by the anti-freeze devices
on the T-KJR. Any hot or cold water pipes
located outside of the unit will not be protected.
Properly protect and insulate these pipes from
freezing.
CAUTION:
Label all wires prior to
disconnection when servicing controls. Wiring
error can cause improper and dangerous
operation. Verify proper operation after
servicing.
The FLASH T-KJR water heater requires an
electrical power supply from 120 VAC 60 Hz
circuit and be properly grounded.
A means for switching on/off the 120 VAC
power supply must be provided for service
reasons.
Wire the heater exactly as shown in the
wiring diagram.
A green screw is provided in the junction
box for grounding connection.
MAINTENANCE AND SERVICE
WARNING: Turn off the electrical power
supply and close the manual gas control
valve and the manual water control valve
before servicing.
Do this immediately after installation
.
1. Clean the cold-water inlet filter (figure
below).
2. Be sure that all openings for combustion
and ventilation air are not blocked.
3. Check that the exhaust vent pipe is not
blocked.
4. Check the gas pressure.
5. Keep the area around the water heater
clear. Remove any combustible materials,
gasoline or any flammable vapors and
liquids.
The unit should be checked once a year or as
necessary by a licensed technician. If repairs
are needed, any repairs should be done by a
licensed technician.
The following systems and parts should be
checked at least once a year:
1. Venting system
2. Burner
3. Manual operation of the pressure relief
valve to ensure correct operation.
4. Periodic cleaning of the water filter (figure
above).
5. Heat exchanger. Remove the thermistor
and check for a mineral coating. A mineral
coating on the thermistor requires flushing
the heat exchanger with a de-scaling
solution. Scale build up will void your
warranty and shorten the life of your water
heater.
Filter
OPEN
CLOSE
Summary of Contents for Flash Water Heater T-KJr
Page 24: ...24 Component Diagram Case Heat Exchanger Computer ...
Page 25: ...25 Gas Manifold Water Way ...
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