Takagi T-K3-SP Installation Manual And Owner's Manual
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Takagi T-K3-SP Installation Manual And Owner's Manual

Instantaneous flash water heater
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T-K3-OS and T-K3-SP
Instantaneous Water Heater
Installation Manual and Owner's Guide
Flash Water Heater™
Model T-K3-OS
Suitable for potable water heating and space heating
FEATURING
• ENDLESS HOT WATER
• ON DEMAND USAGE
• COMPACT, SPACE SAVING
• ENERGY CONSERVATION
• COMPUTERIZED SAFETY
• NO PILOT LIGHT
Flash Water Heater™
Model T-K3-SP
TAKAGI Industrial Co. USA Inc.
5 Whatney
Irvine, CA 92618
Toll Free: (888) 882-5244 USA
Toll Free: (877) 877-4953 CANADA
- 1 -
WARNING
This
product
must
installed and serviced by a
licensed plumber, a licensed
gas fitter, or a professional
service technician. Improper
installation and/or operation,
or
installation
unqualified person, will void
the 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.
be
by
an

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Summary of Contents for Takagi T-K3-SP

  • Page 1 Suitable for potable water heating and space heating death. FEATURING TAKAGI Industrial Co. USA Inc. • ENDLESS HOT WATER 5 Whatney • ON DEMAND USAGE Irvine, CA 92618 • COMPACT, SPACE SAVING Toll Free: (888) 882-5244 USA •...

  • Page 2: Table Of Contents

    CONTENTS SPECIFICATION T-K3-OS and T-K3-SP SPECIFICATIONS……………………... Natural Gas Input Min: 11,000 Btu/h INTRODUCTION…………………….… (Operating Range) Max: 190,000 Btu/h SAFETY GUIDELINES…………….….. INSTALLATION……………………..…. LPG Input Min: 11,000 Btu/h General…………………………….… (Operating Range) Max: 190,000 Btu/h Accessories………………………….. Gas Connection ¾” NTP Outdoor Installation…………………. Water Connections ¾”...

  • Page 3: Introduction

    • Please read all installation instructions completely before installing this product. • If you have any problems or questions regarding this equipment, consult with Takagi or its local representative. • The T-K3-OS/SP Water Heater is an instantaneous, tankless water heater designed to efficiently supply endless hot water for your needs.

  • Page 4: Safety Guidelines

    SAFETY GUIDELINES • Installation and service must be performed by a qualified installer (for example, a licensed plumber or gas fitter), otherwise the warranty by Takagi will be void. • The installer (licensed professional) is responsible for the correct installation of your Flash T-K3-OS/SP Water Heater and for compliance with WARNING all national, state/provincial, and local codes.

  • Page 5: Installation

    Water heater may be damaged. • The water heater must be installed vertically. • If the T-K3-SP is installed in a beauty salon, some chemicals used in a CAUTION beauty salon may affect the flame sensor. Water heater may not work properly.

  • Page 6: General

    GENERAL 1. The manifold gas pressure is preset at the factory. It is computer controlled and should not need adjustment. 2. Maintain proper space for servicing. Install the unit so that it can be connected or removed easily. Refer to p. 7 and p. 9 for proper clearances. 3.

  • Page 7: Outdoor Installation

    The dipswitch setting, as shown to the right, is for the T-K3-SP ONLY. 4. The outdoor vent cap must be used when the T-K3-SP is installed outdoor. Takagi requires the use of its part No. TK-TV04. 5. When installed outdoors, the T-K3-OS/SP water heater shall be wall mounted only.
  • Page 8 Avoid locating the water heater exhaust opening near any air intake devices. These fans can pick up the exhaust flue products from the water heater and return them to the building. This can create a health hazard. Prohibited T-K3-SP - 8 -...

  • Page 9: Indoor Installation

    190 sq. in. area. Combustible Air Supplied by Mechanical fan or Make up air device The T-K3-SP water heater is equipped with a combustible air sensor that will shut off the unit when inadequate combustible air supply to unit is detected. •...

  • Page 10: Venting Instructions

    350ºF. For best results, a vent system should be as short and straight as possible. The T-K3-SP is a Category III appliance and must be vented accordingly with any 4” vent approved for use with Category III or Special BH type gas vent.
  • Page 11 • The sidewall vent terminator, TK-TV01, is recommended when the water heater is vented through a sidewall. General rules for venting the T-K3-SP water heater are: Place the water heater as close as possible to the vent terminator. The vent collar of the water heater must be fastened directly to an unobstructed vent pipe.
  • Page 12 • Install a condensation drain in the venting. • Follow the vent system to vent manufacturer’s instruction and local code. • Do not common vent or connect any vent from other appliances to the T-K3-SP vent. • Use 4” category III approved or Special BH, single or double wall stainless steel vent pipe.
  • Page 13 Canada U.S.A Direct vent and other than Direct Direct vent Other than Direct Vent 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 14: Gas Supply And Gas Pipe Sizing

    Contact your local distributor to get the correct unit for your gas type. Conversion done by anyone other than the manufacturer will void all warranty. Takagi is not liable for any property and/or personal damage resulting from unauthorized conversions.
  • Page 15 Size the gas pipe appropriately to supply the necessary volume of gas required for the T-K3-OS/SP (190,000 BTUH for both Natural Gas and Liquid Propane) using ANSI233.1/NAPA 54 in the USA or CAN/CSA B149.1 in Canada or local codes. Otherwise, flow capabilities and output temperatures will be limited. Install a manual gas shut-off valve between the T-K3-OS/SP and the gas supply line.

  • Page 16: Water Connections

    WATER CONNECTIONS FOR YOUR SAFETY, READ BEFORE OPERATING: Do not use this water heater if any part has been submersed under water. Immediately call a licensed professional to inspect the water heater and to replace any damaged parts. All pipes, pipe fittings, valves and other components, including soldering materials, must be suitable for potable water systems.

  • Page 17: Pressure Relief Valve

    PRESSURE RELIEF VALVE The FLASH T-K3-OS/SP has a high-temperature shut off switch built in as a standard safety feature (called a Hi-Limit switch) therefore a “pressure only” relief valve is required. This unit does not come with an approved pressure relief valve. An approved pressure relief valve must be installed on the hot water outlet.

  • Page 18: Electrical Connections

    ELECTRICAL CONNECTIONS WARNING: Follow the electrical code requirements of the local authority having jurisdiction. In the absence of such requirements, follow the latest edition of the National Electrical Code ANSI/NFPA 70 in the U.S. or the latest edition of CSA C22.1 Canadian Electrical Code, Part 1, in Canada.

  • Page 19: Initial Operation

    INITIAL OPERATION FOR YOUR SAFETY, READ BEFORE OPERATING: • Check the GAS and WATER CONNECTIONS for leaks before firing it for the first time. • Open the main gas supply valve to the unit using only your hand to avoid any spark. Never use tools.

  • Page 20: Normal Operation

    NORMAL OPERATION • Flow rate to activate the T-K3-OS/SP : 0.5 gallon per minute • Flow rate to keep the T-K3-OS/SP running : 0.4 gallon per minute 1. NORMAL OPERATION WITHOUT REMOTE CONTROLLER 1. Open a hot water tap. 2. Mix cold water with the hot to get 3.

  • Page 21: Flow

    • Do NOT install the water heater in an area where the water heater is subject to temperatures (including wind chill) below 5ºF (-15ºC), as this will void the warranty and Takagi will not be responsible for any damage to the heat exchanger as a result of freezing.

  • Page 22: Temperature Setting

    TEMPERATURE SETTINGS • There are 4 preset temperatures that you can select from by changing the dipswitch settings at the bottom left corner of the computer board. • The temperature has been preset at the factory to 122ºF (50ºC). • If you desire to change the set temperature with dipswitches, please refer to the following diagram.

  • Page 23: Maintenance And Service

    • Keep the area around the water heater clear. Remove any combustible materials, gasoline or any flammable vapors and liquids. TAKAGI recommends having the unit checked once a year or as necessary by a licensed technician. If repairs are needed, any repairs should be done by a licensed technician.

  • Page 24: Troubleshooting

    GENERAL TROUBLESHOOTING ~ TEMPERATURE and AMOUNT OF HOT WATER ~ PROBLEM POSSIBLE SOLUTIONS • The time it takes to deliver hot water from the T-K3- It takes long time to get hot water at the fixtures. OS/SP to your fixtures depends on the length of piping between the two.
  • Page 25 5 to 50 seconds in order to re-ignite quickly, as well as purge all the exhaust gas out of the flue. • Contact TAKAGI. Abnormal sounds come from the unit. - 25 -...
  • Page 26 TROUBLESHOOTING – ERROR CODES • All Takagi units are self diagnostic for safety and convenience when trouble shooting. • If there is a problem with the installation or the unit, it will display a numerical error code on the TK-RE02 (if installed). If the TK-RE02 is not installed, the red LED at the bottom- right corner of the computer board will be blinking to communicate the source of the problem instead.

  • Page 27: Wiring Diagram

    Electrical Rating: 120 VAC, 60 Hz Note: If any of the original wiring supplied with this appliance must be replaced, it must be replaced with appliance wiring material (180c) or its equivalent. Replacement wires are available through Takagi. - 27 -...

  • Page 28: For Your Safety Read 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 29 DANGER Vapors from flammable liquids will explode and catch fire causing death or severe burns. Do not use or store flammable products such as gasoline, solvents or adhesives in the same room or area near the water heater. Keep flammable products: Vapors: 1.

  • Page 30: Applications

    APPLICATIONS 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. • The FLASH T-K3-OS/SP can be used to supply potable water and space heating and shall not be connected to any heating system or component(s) previously used with non-potable water where any chemicals were added to the water heating appliances.
  • Page 31 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 - 31 -...

  • Page 32: Re-Circulation

    Recirculation (Aquastat-controlled pump) * Size the pump to provide at least 2 GPM through the system at 15 Ft of Head plus piping head losses. 2 GPM will allow the system to operate at its optimal performance. * If the application requires a higher re-circulating flow...

  • Page 33: Optional Items

    OPTIONAL ITEMS 1. TK-RE02 Temperature Remote Controller 2. TK-TV01 Vent Terminator (for T-K3-SP) The TK-RE02 Temperature Remote Controller has two This terminator can be used functions. allows where a T-K3-SP is going to output temperature from be vented out through a T-K3-OS/SP wall.
  • Page 34 COMPONENTS DIAGRAM Case assembly 0 0 4 0 0 1 7 0 2 0 0 2 0 0 4 0 5 2 0 0 1 0 5 2 7 0 2 0 0 2 0 5 4 7 0 6 0 5 3 7 0 7 0 0 5...

  • Page 35: Burner Assembly

    Burner assembly 1 0 9 1 5 1 1 0 2 1 0 1 1 1 7 1 1 4 1 1 5 1 0 6 1 0 7 7 1 6 1 0 4 1 1 2 1 5 1 1 5 3 1 1 6 7 0 4...

  • Page 36: Water Way Assembly

    Water way assembly 4 0 8 4 0 1 4 1 3 4 0 9 4 1 8 4 1 9 4 5 1 4 0 7 4 1 1 4 0 1 4 0 2 T - K 3 - O S 4 1 0 4 1 2 4 5 7...

  • Page 37: Parts List

    PARTS LIST Case assembly Case assembly Nylon clamp Coating screw washer M4×12 Front cover Air blockage plate Coating screw washer M4×10 Bracket Junction box Coating screw M4×10 Pan screw M4×10 Burner assembly Screw M4×10 Pan screw washer M4×10 Hex head screw washer M4×12 Pan screw M4×8 Screw M3×8...
  • Page 38 Out Put Temperature vs. GPM (Max. 7.0 GPM) with Various Ground Water Temperature Assuming Correct Gas pipe size 40 F 50 F 60 F 70 F Out put Hot Water Temperature 40 F 50 F 60 F 70 F - 38 -...
  • Page 39 Internet (www.takagi.com/warranty). General terms of limited warranty: The manufacturer, Takagi Industrial Co. USA, Inc. will honor our warranty to the original retailed buyer only, and it is not transferable. This warranty strictly covers failed mechanical and electrical parts due to...
  • Page 40 19H046 - 40 -...

This manual is also suitable for:

T-k3-os

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