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3

Operation

General

The Flash Water Heater is an instantaneous,
tankless water heater designed to efficiently supply
domestic or commercial hot water. The principle
behind the Flash water heater is simple: Once a
hot water tap is opened, the Flash’s flow sensor
detects that hot water is needed, and automatically
commands the computer to electronically ignite the
burners, and heat water. During operation, the
computer monitors the water temperature and flow
rate, and controls the gas flow and fan speed to
maintain a constant output temperature. After the
burners are ignited the “fire on” lamp will be lit.

0.75 gallons per minute is required to turn the
burners on, but after the burners are ignited, the
flow rate can drop to 0.60 gallons per minute
without the burners turning off.
As long as water, gas and electricity are
connected, there will be an endless supply of hot
water. To turn on your water heater, just open a
tap. To turn the heater off, just close the tap.

Turning It On

To turn on the Flash water heater
1.  Open a hot water tap, or turn on water

demanding appliance.

2.  Unit will detect flow, burners will ignite, and

“Fire On” lamp will light up on computer board.

3. If necessary, mix in cold water to get a
comfortable temperature.

Turning It Off

To turn off the Flash water heater
1.  Close the hot water tap, or turn appliance off.
2.  Flow will diminish and unit will shut off.
3.  “Fire On” lamp will go out.

Temperature

The output temperature of the T-KJr. has been
factory set to maintain a maximum of 120

°

 F (50

°

C). This is electronically controlled by the
computer and can be adjusted with a TK-RE01
temperature controller. Further adjustment may be
made by mixing in cold water with the hot to obtain
the ideal water temperature.
The maximum possible flow rate out of the unit is
dependent on ground water temperature and the
temperature setting chosen.  Consult the flow
charts on the last page of this unit to determine the
possible outlet temperature and flow rate
combinations.

WARNING: 

Temperatures above 125º F (52º C)

can cause severe burns or death from scalding.
Children, the disabled and the elderly are at a high
risk of being injured. Feel the water temperature
before bathing or showering. Do not leave
children, disabled persons, or the elderly
unsupervised.

Lamp is lit

Lamp is lit
extinguished

Содержание T-KJr

Страница 1: ...rbon monoxide gas and flue gases which can cause serious injury or death Improper installation and or operation or installation by an unqualified person will void warranty WARNING If the information i...

Страница 2: ...onal Items 20 TK RE01 20 TK BK01 20 TK TV01 20 TK TV03 20 Parts Diagram 21 22 Parts Lists 23 Flow Chart 24 Specifications Natural Gas Input Min 19 500 Btu Max 140 000 Btu LPG Input Min 17 000 Btu Max...

Страница 3: ...Gas Company or the manufacturer WARNING Do not disconnect the electrical supply if the temperatures will be near freezing The Freeze Prevention Device will only work if the unit has proper electrical...

Страница 4: ...water demanding appliance 2 Unit will detect flow burners will ignite and Fire On lamp will light up on computer board 3 If necessary mix in cold water to get a comfortable temperature Turning It Off...

Страница 5: ...into the flue and cause the unit to freeze Do not install the water heater in an area with extremely cold weather This will void your warranty and Takagi Industrial Co USA Inc will not be responsible...

Страница 6: ...ccessories Check that all the parts listed below were included with the unit Electrical Connections The T KJr requires a 60 Hz 120 VAC electrical power supply and it should be properly grounded in acc...

Страница 7: ...6 Wiring Diagram...

Страница 8: ...ailer or distributor to get the correct unit for your gas type Always install a manual shutoff valve on the gas supply line in case of an emergency or if service or maintenance is necessary This appli...

Страница 9: ...ween the unit and the relief valve It is recommended that the Pressure only relief valve be installed 6 inches away from water flow to prolong the life of the Pressure relief valve The Pressure only R...

Страница 10: ...pen unroofed area and maintain the following minimum clearances from combustible and noncombustible materials Outdoor Clearances Bottom Piping side 6 Front Maintenance space Min 6 Back of heater 1 Non...

Страница 11: ...egory III vent pipe to the 4 round collar on the top of the unit WARNING Do not install the unit directly on a combustible surface such as wood floors etc Install with clearance in mind keeping at lea...

Страница 12: ...allation of water heaters in manufactured homes mobile homes and the latest edition of the National Fuel Gas Code ANSI Z221 3 NFPA 50 Locate the heater in an enclosure separating the unit from the int...

Страница 13: ...the unit counterclockwise to the OFF position 5 Wait five 5 minutes to clear out any gas If you then smell gas STOP Follow b in the Initiating the Appliance section above If you do not detect gas proc...

Страница 14: ...er for space heating at temperatures higher than required for other used a means such as a mixing valve shall be installed to temper the water for those uses in order to reduce scald hazard potential...

Страница 15: ...ater and heat exchange panel Warning Follow all local codes or in the absence of local codes follow the most recent edition of the National Standard Code ANSI Z21 10 3 Warning This illustration is for...

Страница 16: ...T KJr with Storage Tank The maximum flow rate through the T KJr is 5 8 GPM If it is necessary to achieve higher flow rates for longer periods of time then it can be installed in conjunction with a st...

Страница 17: ...16 This system will also need a pump of 1 12 hp or greater depending on the application situation...

Страница 18: ...ped with an ignition device that automatically lights the burner Do not try to light the burner by hand B BEFORE OPERATING smell all around the water heater area for evidence of leaking gas Be sure to...

Страница 19: ...ldren or the infirm without supervised DANGER Hot Water Heater temperature over 125 F can cause severe burns instantly or death from scalding Children disabled and elderly are at the highest risk of b...

Страница 20: ...supply line is sized properly and that the gas pressure is within the required range If the gas line is okay check the plumbing for mixing valves thermostatic valves scald protection single handled va...

Страница 21: ...lowing chart for the meaning of an error code TK RE01 Computer Board TK RE01 Check Point 03 Wrong Gas 70 Computer Board Blinking One Time 71 Solenoid Gas Valve 31 Output Thermistor Blinking Two Times...

Страница 22: ...F 104 F 106 F 108 F 109 F 111 F 113 F 115 F 117 F 122 F 131 F 140 F 158 F and 167 F See the trouble shooting section for information on possible error codes 3 TK TV03 Vent Damper The TK TV03 Vent Damp...

Страница 23: ...out a thimble Install vent terminator in accordance with manufacturer s installation instructions and any applicable local codes 4 TK TV03 Vent Cap The TK TV03 Vent Cap is for outdoor installation wit...

Страница 24: ...23 Case Burner Gas Manifold...

Страница 25: ...24 Water Way...

Страница 26: ...SCREW 124 FAN 125 PRESSURE SWITCH SENSING PLATE 126 SILICONE TUBE 127 EXHAUST PACKING 128 SCREW 129 OVERHEAT CUT OFF FUSE FIXING PLATE 130 OVERHEAT CUT OFF FUSE 131 OVERHEAT CUT OFF FUSE FIXING PLATE...

Страница 27: ...e vs Temperature T KJr Flow Rate vs each Ground Water Temperature 0 00 1 00 2 00 3 00 4 00 5 00 6 00 7 00 100 110 120 130 140 150 160 170 180 Hot Water Output Temperature Hot Water Output GPM 40 F 50...

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