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4

Flow

The flow rate through the T-KJr. is limited to a
maximum of 5.8 GPM.  The temperature setting,
along with the supply temperature of the water will
determine the flow rate the unit puts out.  Consult
the flow charts on the last page of this manual to
determine the possible outlet temperature and flow
rate combinations. Based on the United States
Department of Energy method of testing water
heater output, the T-KJr. is rated for 180 gallons
per hour, or 3.0 GPM, at a 77

°

 F rise above the

inlet temperature.  Refer to the following chart of
typical household flow rates to determine what the
T-KJr. can do in a household application.
Remember that for bathing, cold water will be
mixed for a comfortable temperature, increasing
the flow output rate.

Freeze Prevention

This unit comes equipped with heaters that
discourage the unit from freezing. For this freeze
prevention system to operate there has to be
electrical power to the unit.
The freeze prevention devices will not work if the
electrical power source is disconnected.
The unit has been rated for temperatures down to
5º F (-15º C) in a wind free environment. The wind
chill factor will cause the unit to freeze at
temperatures above 5º F (-15º C), even if the unit
is installed indoors.
For indoor installation in areas where the
temperature will be well below freezing for
extended periods of time,  use the included
“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 on the internal heater blocks
on to prevent the heat exchanger from freezing.
Install a TK-TV03 backflow prevention kit so that
cold air will not backflow 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 for any damage that occurs.

WARNING

: The pipe heaters are located on the

Flash Water Heater. Any hot or cold water pipes
located outside of the unit will not be protected.
Properly protect and insulate these pipes from
freezing.
If the heater will not be in use for a long period of
time or if the temperatures will drop below 5º F (-
15º C) with the wind chill factor, turn off heater and
drain the unit of water. This applies to indoor and
outdoor installations. This will keep the unit from
freezing and being damaged. Frozen heat
exchangers are not covered under warranty.

Follow these instructions carefully:
1.  Turn off the power supply to the Flash Water

Heater.

2.  Close manual gas control valve.
3.  Close manual water shut off valve.
4.  Open all hot water taps in the house.

(Bathroom, kitchen, laundry room, etc.). When
the water flow has ceased, close all hot water
taps.

5.  Have a bucket to catch the water from the

unit’s drain plugs. Remove the drain plugs to
drain the water out of the unit.

6.  Let drain for 5 minutes.
7.  Securely screw the drain plugs back into place.

Follow these steps when it is again safe to use the
water heater:

1.  Make sure all hot water taps are closed and

the drain plugs are securely attached.

2.  Purge the water line of debris.
3.  Open manual water control valve located on

the water supply line.

4.  Open all the hot water taps to verify water

flows to the taps. Close hot water taps.

5.  Open manual gas control valve located on the

gas supply line.

6.  Turn on the power supply to the Flash Water

Heater.

Household Flow Rates

Appliance / Use

Flow Rate

(GPM)

Lavatory Faucet

1.0

Bath Tub

4.0

Shower

2.0

Kitchen Sink

1.5

Dishwasher

1.5

Washing Machine

2.0

Taken from UPC 1997

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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