Takagi T-KJr Installation Manual And Owner's Manual
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Takagi T-KJr Installation Manual And Owner's Manual

Instantaneous water heater
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See also: Installation Instructions & Owner's Manual
Flash Water Heater
Model T-KJr.
Suitable for potable water heating and/or space heating
FEATURING
ENDLESS HOT WATER
ON DEMAND
COMPACT, SPACE SAVING
ENERGY CONSERVING
COMPUTER CONTROLS
COMPUTERIZED SAFETY
NO PILOT LIGHT
Takagi Industrial Co. USA Inc.
3-B Goodyear
Irvine, CA 92618
Toll Free (888) 882-5244
www.takagi-usa.com
T-KJr.
Installation Manual and Owner's Guide
Instantaneous Water Heater
FOR YOUR SAFETY
must be installed and serviced by a
professional service technician or licensed
plumber or gas fitter when installed in the
Commonwealth of Massachusetts and/or
any other State.
Operation creates carbon 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 in this
manual is not followed exactly, a fire or
explosion may result, causing property
damage, personal injury or death.
Do not store or use gasoline or other
flammable vapors or liquids in the
vicinity of this or any other appliance.
WHAT TO DO IF YOU SMELL GAS
Do not use any appliance.
Do not touch any electrical
switch
your building.
Immediately contact your gas
supplier from another location.
Follow
instructions.
If you cannot reach your gas
supplier,
department.
Installation
performed by a qualified installer,
service agency or the gas supplier.
- This product
Warning
do not use any phone in
;
the
gas
supplier's
call
the
and
service
must
fire
be

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Summary of Contents for Takagi T-KJr

  • Page 1 COMPUTER CONTROLS department. COMPUTERIZED SAFETY NO PILOT LIGHT Installation service must Takagi Industrial Co. USA Inc. performed by a qualified installer, 3-B Goodyear service agency or the gas supplier. Irvine, CA 92618 Toll Free (888) 882-5244 www.takagi-usa.com...

  • Page 2: Table Of Contents

    Flow Chart…………………………………… for high altitude adjustment instructions. Check the rating plate to insure this product matches your specifications. Takagi - USA is constantly improving our products; therefore specifications subject to change without prior notice.

  • Page 3: For Your Safety

    For Your Safety WARNING: Do not disconnect the electrical supply if the temperatures will be near freezing. The Freeze Prevention Device will only work if the PLEASE READ THIS MANUAL CAREFULLY unit has proper electrical power. The Freeze AND FOLLOW IT EXACTLY FOR YOUR Prevention Device is rated for temperatures down SAFETY.

  • Page 4: Operation

    3. “Fire On” lamp will go out. Lamp is lit extinguished 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 0.75 gallons per minute is required to turn the...

  • Page 5: Flow

    Flow your warranty and Takagi Industrial Co. USA Inc. will not be responsible for any damage that occurs. The flow rate through the T-KJr. is limited to a maximum of 5.8 GPM. The temperature setting, WARNING : The pipe heaters are located on the along with the supply temperature of the water will Flash Water Heater.

  • Page 6: Installation

    Copies of this Electrical Connections manual are available from TAKAGI-USA The T-KJr. requires a 60 Hz 120 VAC electrical General power supply, and it should be properly grounded in accordance with the most recent edition of the...

  • Page 7: Wiring Diagram

    Wiring Diagram...

  • Page 8: Gas Supply Plumbing

    WARNING: Gas Supply Piping Fire or explosion may result if the maximum supply pressures are exceeded. The manifold gas pressure should be at maximum 2.9” Check the rating plate to make sure that the unit WC for natural gas, and 3.3” WC for propane. was built for the type of gas available in the area.

  • Page 9: Water Plumbing

    Water Plumbing Pressure Relief Valve Follow local guidelines for the length of the An approved pressure relief valve must be plumbing line in order to ensure that there is installed in any installation with this unit. enough water pressure for all the fixtures on the pressure relief valve must be installed on the hot line.

  • Page 10: Wall Hanging Installation

    WARNING: Wall Hanging Installation Do not have the flue terminal pointing toward any opening into a building. Do not locate The TKJr is built for wall mount installations only. your heater in a pit or any location where gas and Use proper screws to secure the unit in place.

  • Page 11: Indoor Installation

    Combustible Air Supply death. For installation in altitudes above 4,500 feet, The T-KJr. must be installed in a location where contact the manufacturer for instructions only if the proper amount of combustible air will be you are experiencing difficulties with the unit.

  • Page 12: Manufactured Home (Mobile Home) Installation

    The unit can be vented either up and out the roof, or directly through a wall. If the unit will be vented through a wall, use Takagi USA Inc. optional part, This appliance does not have a pilot. It is...

  • Page 13: Initial Operation

    WARNING: IF YOU SMELL GAS: 7. Turn on the electrical power to the appliance. 8. Turn on any tap, and the T-KJr. will initiate itself. Do not use any appliance. 9. If the appliance will not operate, follow the Do not touch any electric switch; do not use instructions in the “Turning Off the Gas Supply...

  • Page 14: Space Heating Application

    Space Heating Application The FLASH T-KJr. can be used for space heating as well as potable heating of hot water applications. WARNING Toxic chemicals such as used for boiler treatments chemical, alcohol, glycerol and glycol group will not be introduced into the system when used for potable water and space heating.

  • Page 15: Dual Purpose Heating

    Dual-purpose hot water heating (Domestic and Heating): Diagrammatic Layout of Radiant Heating and Domestic Water Heater Priority Control Devices: It has a capability to make priority system that can be used as a flow sensor, Aquastat, or electronic controller to control radiant, Hydro or baseboard heating equipments.

  • Page 16: Applications

    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 storage tank. A pump will be necessary to keep the water hot.
  • Page 17 This system will also need a pump of 1/12 hp or greater, depending on the application situation.

  • Page 18: Before Operating

    FOR YOUR SAFETY READ BEFORE OPERATING WARNING: If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life. A. This water heater does not have a pilot. It is equipped with an ignition device that automatically lights the burner.

  • Page 19: Danger

    W A R N I N G The outlet hot water temperature of the T-KJr.. water heater is factory set at 120 F. WARNING: Use this heater at your own risk. The set outlet water temperature can cause severe burns instantly or death from scalds.

  • Page 20: Maintenance

    Water Isn’t Hot Enough supply, the manual gas control valve, and the manual water control valve before The T-KJr. can burn gas at a maximum input rate servicing. of 140,000 BTUH. This puts a limit on the possible output temperature and flow capabilities (See flow The unit should be checked once a year or as chart on the last page of this manual).

  • Page 21: Tk-Re01

    Flame Sensor, Hi-limit Blinking Three Times Main Gas Valve Proportional Gas Valve Abnormal Burning Blinking Four Times Pressure switch Blinking Five Times Remote Controller For technical support contact Takagi toll free at (888) 882-5244, or check our website at www.takagi-usa.com.

  • Page 22: Optional Items

    This is from the T-KJr. to be adjusted within the range of CSA approved part of the unit. This helps prevent 95 °F to 167 °F, and it also works as a diagnostic...

  • Page 23: Tk-Tv01

    2. TK-TV01 Vent Terminator 4. TK-TV03 Vent Cap This terminator can be used where a T-KJr. is The TK-TV03 Vent Cap is for outdoor installation going to be vented out through a wall. This is a with the T-KJr. water heater. The cap is installed CSA approved part of the unit.

  • Page 24: Parts Lists

    Case Manifold Burner...
  • Page 26 TRANSFORMER HI-LIMIT SWITCH PRESSURE SWITCH SCREW BURNER ASSEMBLY SCREW SCREW HEAT EXCHANGER ASSEMBLY SILICON CAP O-RING IGNITER CORD FREEZE PROTECTION HEATER FLAM E SENSOR CORD FREEZE PROTECTION HEATER PLATE CORD CLAMP WATER INLET MANIFOLD INLET DRAIN PLUG GASKET O-RING SCREW FILTER MANIFOLD SCREW FEEZE PROTECTION HEATER...
  • Page 27 Flow Rate vs. Temperature T-KJr Flow Rate vs. each Ground Water Temperature 7.00 6.00 5.00 4.00 3.00 2.00 1.00 0.00 Hot Water Output Temperature 40 F 50 F 60 F 70 F...

This manual is also suitable for:

Flash water heater t-kjr

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