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(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 “thermostat
extension cable” to relocate the internal
thermostat located on the fan motor to the
outdoors. This will sense the ambient air
temperature and turn the internal heater blocks
on to help prevent the heat exchanger from
freezing.
The thermostat is attached to the motor fan.
The computer may need to be removed to gain
access to the thermostat. Remove the
thermostat from the fan and extend the cable
to locate the thermostat outdoors where it can
get a better ambient temperature reading.
CAUTION: Only the pipes within the water
heater are protected by the anti-freeze devices
on the T-K2. 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-K2 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
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