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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Flash Water Heater™
Model T-KJr.
Suitable for potable water heating and space heating
FEATURING
•
ENDLESS HOT WATER
•
ON DEMAND
•
COMPACT, SPACE SAVING
•
ENERGY CONSERVING
•
COMPUTER CONTROLS
•
COMPUTERIZED SAFETY
•
NO PILOT LIGHT
T-KJr.
Installation Manual and Owner's Guide
Instantaneous Water Heater
This product must be installed and
serviced
licensed gas fitter, or a professional
service technician and/or in accordance
with all local code. Improper installation
and/or operation, or installation by an
unqualified person, will void the warranty.
Operation of this unit creates carbon
monoxide gas and flue gases which can
cause serious injury or death. In addition,
if the information in this manual is not
followed exactly, a fire or explosion may
result causing property damage, personal
injury or death.
Takagi Industrial Co. USA Inc.
Toll Free (888) 882-5244 USA
Toll Free (877) 877-4935 CANADA
WARNING
by
a
licensed
WARNING
5 Whatney
Irvine, CA 92618
www.Takagi.com
plumber,
a

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Summary of Contents for Takagi T-KJr

  • Page 1 Model T-KJr. injury or death. Suitable for potable water heating and space heating FEATURING Takagi Industrial Co. USA Inc. • ENDLESS HOT WATER • 5 Whatney ON DEMAND •...

  • Page 2: Table Of Contents

    Gas). For elevations above 6000ft or for Output temperature Chart …………..27 specific instructions on how to lower the manifold pressure, please call the Takagi office. Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

  • Page 3: Introduction

    Flash T-KJR Water for the installation, operation, and maintenance Heater. Installation and service must be of the Model T-KJR water heater. This unit performed by a qualified installer (for includes a fan enabling sidewall (power) example, a licensed plumber or gas fitter)
  • Page 4 6. WARNING: disconnect GENERAL electrical supply if the ambient temperature will drop below freezing. The Freeze The T-KJR. Water Heater is an instantaneous, Prevention Device only works if the unit tankless water heater designed to supply electrical power. Freeze endless hot water to your entire household...

  • Page 5: Installation

    B149.1 Natural gas and Propane Installation optional TK-TV09 direct vent conversion Code in Canada. kit and convert the T-KJR to a sealed combustion unit. The warranty will not Ensure that the unit is set for outdoor cover damage caused to the unit due to installation.

  • Page 6: Indoor Installation

    INDOOR INSTALLATION When combustion air is supplied from inside the building, an opening communicating with When installed indoors, the T-KJR water the rest of the dwelling should have a minimum heater shall be located in an area to maintain free area of one square inch per 1000 BTUH...

  • Page 7: Venting Instructions

    Mechanical fan or Make up air device. This is a Category III appliance and must be The T-KJR water heater is equipped with a vented accordingly. The vent system must be combustible air sensor that will shut off the unit sealed air tight.
  • Page 8 Vent Termination General rules for venting the T-KJR water A sidewall vent terminator must be used when heater are: the water heater is vented through a sidewall. Takagi recommends the use of its part No.TK- 1. Place the water heater as close as possible TV01 or the TK-TV05 with the TK-TV09 when to the vent terminator;...
  • Page 9 Direct vent and Direct vent Other than Direct Vent other than Direct Vent Clearance above grade, veranda, porch, 1 foot 1 foot 1 foot deck, or balcony. 4 feet from below or Clearance to window or door that may be 3 feet 1 foot side opening.

  • Page 10: Gas Supply/Gas Pipe Sizing

    Until testing of the main gas line supply pressure is completed, ensure the gas line to the T-KJR is disconnected to avoid any damage to FOR YOUR SAFETY, READ the water heater.

  • Page 11: Water Connection

    1. Turn off the power supply to the T-KJR to replace any damaged parts. Water Heater. 2. Close the manual gas shut off valve located on the gas supply line.
  • Page 12 The pressure relief valve must conform on the gas supply line. to ANSI Z21.22 or CAN 1-4.4 and installation 6. Turn on the power supply to the T-KJR must follow local code. Water Heater. The discharge capacity must be at least 140,000 BTU/hr.

  • Page 13: Electrical Connection

    CAUTION: When servicing or replacing parts towards the floor. within the T-KJR, label all wires prior to CAUTION: IF YOU SMELL GAS: disconnection to facilitate an easy and error free reconnection.

  • Page 14: Normal Operation

    Based on the United States Department of Energy method of testing water heater output, the T-KJR is rated for 179 gallons per hour (GPH), or 3.0 gallons per minute (GPM), when raising the water temperature by 77 F (for example from 43 F to 120 F).

  • Page 15: Temperature Setting

    (including wind chill) warranty. below 5ºF (-15ºC), this will void the warranty and Takagi will not be responsible for any...

  • Page 16: Maintenance And Service

    4. Check the gas pressure. on the T-KJR. Any hot or cold water pipes 5. Keep the area around the water heater located outside of the unit will not be protected. clear. Remove any combustible materials,...

  • Page 17: Error Codes

    Common Trouble Shooting First check the flow rate through the unit. If the The T-KJR can burn gas at a maximum input flow is less than .75 GPM, the unit will not rate of 140,000 BTUH. This puts a limit on the initiate.

  • Page 18: For Your Safety

    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 ARNING The outlet hot water temperature of the T-KJr. water heater is factory set at 122 F. WARNING: Use this heater at your own risk. The set outlet water temperature can cause severe burns instantly or death from scalds. Test the water before bathing or showering.

  • Page 20: Space Heating Applications

    Applications Space Heating Applications The T-KJR can be used for potable hot water heating applications as well as space heating applications. WARNING Toxic chemicals used in boiler treatments such as alcohol, glycerol and glycol group must not be introduced into the system when used for open loop potable water and space heating.
  • Page 21 State of Massachusetts. There are a wide variety of variations to the application of controls and equipment presented. Designers must add all necessary safety and auxiliary equipment to conform to code requirements and design practice. For more details, contact the Takagi Technical Department at (888) 882-5244.

  • Page 22: Recirculation

    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 with full pressure for longer periods of time, then it can be installed in conjunction with a storage tank. A pump will be necessary to keep the storage tank water hot. We suggest a high-head pump of 1/12 hp or greater depending on the system.

  • Page 23: Optional Items

    1. TK-RE02 Temperature Remote Controller TK-RE02 Temperature This terminator can be used Remote Controller where a T-KJR is going to be functions. It allows the output vented out through a wall. This temperature from the T-KJR to tested Takagi be adjusted within the range of component.

  • Page 24: Component Diagram

    Component Diagram Heat Exchanger Case Computer...
  • Page 25 Manifold Water...

  • Page 26: Parts List

    T-KJr. PARTS LIST 001 CASE ASSEMBLY 126 SILICONE TUBE 002 FRONT COVER 127 EXHAUST PACKING 003 SCREW (COATED) 128 SCREW 004 BRACKET 129 OVERHEAT CUT-OFF FUSE FIXING PLATE 005 BACK GUARD PANEL 130 OVERHEAT CUT-OFF FUSE 006 SCREW (COATED) 131 OVERHEAT CUT-OFF FUSE FIXING PLATE...

  • Page 27: Output Temperature Chart

    Water Output...

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Flash water heater t-kjr

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