Table of Contents
Advertisement
Quick Links
On-Demand Water Heater
Installation Manual and Owner's Guide
Gas Tankless Water Heater
Suitable for potable water heating and space-heating*
* Please refer to local codes for space-heating compliance.
FEATURING
• ENDLESS HOT WATER
• ON-DEMAND USAGE
• COMPACT, SPACE SAVING
• ENERGY CONSERVATION
• COMPUTERIZED SAFETY
• NO PILOT LIGHT
• EASY-LINK SYSTEM*
• COMMERCIAL GRADE COPPER*
*(T-D2-IN / 510 model only)
ANSI Z21. 10.3 and CSA 4.3
T-D2-IN / 510
model only
TM
Models
T-KJr2-IN / 110
T-K4-IN / 310
T-D2-IN / 510
If the information in these
instructions is not followed
exactly, a fire or explosion may
result causing property damage,
WARNING
personal injury or death.
- Do not store or use gasoline or other
flammable vapors and liquids in the vicinity
of this or any other appliance.
- WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electric switch, do not
use any phone in your building.
• Immediately call your gas supplier from
a neighbor's phone. Follow the gas
supplier's instructions.
• If you cannot reach your gas supplier, call
the fire department.
- Installation and service must be performed by
a qualified installer, service agency or the gas
supplier.
If you have any questions,
please call 1-888-479-8324
65Q012-6
REV. 06(04-15)
Advertisement
Table of Contents
Subscribe to Our Youtube Channel
Related Manuals for Takagi T-KJr2-IN / 110
Summary of Contents for Takagi T-KJr2-IN / 110
- Page 1 On-Demand Water Heater Installation Manual and Owner’s Guide ANSI Z21. 10.3 and CSA 4.3 Models T-D2-IN / 510 model only T-KJr2-IN / 110 T-K4-IN / 310 T-D2-IN / 510 If the information in these instructions is not followed exactly, a fire or explosion may result causing property damage, WARNING personal injury or death. - Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.
-
Page 2: Table Of Contents
Computer Board Assembly . . . . . . . . . . . . . . . . . . . . . . 38 General T-KJr2-IN / 110 & T-K4-IN / 310 Easy-Link Connection Procedures Water Way Assembly . -
Page 3: Specifications
SPECIFICATIONS Model T-KJr2-IN / 110 T-K4-IN / 310 T-D2-IN / 510 Natural Gas Input Min .: 19,500 BTU/h Min .: 11,000 BTU/h Min .: 11,000 BTU/h (Operating Range) Max .: 140,000 BTU/h Max .: 190,000 BTU/h Max .: 199,000 BTU/h Propane Input Min .: 19,500 BTU/h... -
Page 4: Introduction
. serious injury . • The T-KJr2-IN / 110, T-K4-IN / 310, & T-D2-IN / 510 WARNING models are to be installed indoors only (direct-vent convertible) . -
Page 5: Installation
. combustion is recommended too . • Do not store or use gasoline or other 9 . For the T-KJr2-IN / 110, T-K4-IN / 310, & T-D2-IN / 510 flammables, vapors, or liquids in the models: vicinity of this appliance . - Page 6 • The warranty will not cover damage • Installation and service must be caused by water quality. performed by a qualified installer (for • Only potable water can be used with example, a licensed plumber or gas this water heater . Do not introduce fitter), otherwise the warranty will be pool or spa water, or any chemically void.
-
Page 7: Clearances
WARNING FOR INSTALLATION Maintain all clearances around the water LOCATIONS heater . • Do not install the heater where water, debris or flammable vapors The diagram of clearance may get into the flue terminal . This may cause damage to the heater and void the warranty . - Page 8 1 . Temperature remote controller: TK-RE02 Please refer to the remote controller manual supplied with the remote . The temperature remote controller has two functions . It allows the output temperature from the water heater to be adjusted within the range of 37 .5 °C to 75 °C (99 °F to 167 °F)*, and it also works as a diagnostic tool that will give a concise error code whenever there is a problem with the unit .
- Page 9 6 . Wall thimble and Sidewall vent terminations They are used when venting out through the wall . These terminations are special stainless steel vents for gas appliances and are UL listed as Category II, III and IV . For different wall thicknesses, there are two ranges of lengths available .
-
Page 10: High-Altitude Installations
Set DIP switches shown in the table below depending on protective devices and they penetrate any the altitude . combustible or noncombustible construction, T-KJr2-IN / 110 & T-K4-IN / 310 Models be sure to follow all applicable national and CAUTION 0 to 2,000 ft... -
Page 11: Exhaust Venting
Exhaust venting Venting Illustrations This is a Category III appliance and must be vented For details of the optional items, refer to the Installation accordingly . The vent system must be sealed airtight . All manual for each Optional item . seams and joints without gaskets must be sealed with high heat resistant silicone sealant or UL listed aluminum Horizontal Installation Diagram:... - Page 12 Horizontal Installation Diagram (with direct-venting) Horizontal Installation Diagram with Direct-Vent Concentric Termination Wall Wall Vertical condensation drain** Sidewall vent terminations Backflow preventer* See the picture below for detailed connection instructions to the Direct-vent conversion kit . Direct-vent concentric Vertical Installation Diagram (with direct-venting) termination Roof flashing Rain cap...
-
Page 13: Vent Termination Clearances
Vent Termination Clearances Canada U .S .A Direct-vent and other Direct- Other than than Direct-vent vent Direct-vent A Clearance above grade, veranda, porch, deck, or balcony 1 foot 1 foot 1 foot 4 feet from below or B Clearance to window or door that may be opened 3 feet 1 foot side opening . - Page 14 For rooftop terminations Please follow all local and national codes in regards to proper termination clearances . In the absence of such codes, the following clearances can be used as guidelines . Local codes supersede these guidelines . CAUTION For sidewall terminations 6 1 0 m 6 1 0 m intake...
-
Page 15: Gas Supply And Gas Pipe Sizing
Gas supply and gas pipe sizing Measuring Inlet Gas Pressure 1 . Turn off all electric power to the water General heater if service is to be performed . • Check that the type of gas matches the 2 . Turn the manual gas valve located on rating plate first. -
Page 16: Pressure Relief Valve
. • The discharge capacity must be at least 140,000 BTU/h for the T-KJr2-IN / 110, 190,000 BTU/h for the T-K4-IN / 310, and 199,000 BTU/h for the T-D2-IN / 510 . • The pressure relief valve needs to be rated for a maximum of 150 psi . -
Page 17: Remote Controller Connections
• Minimum 20 gauge wire (No polarity) terminals on the computer board . (No polarity) • T-KJr2-IN / 110 & T-K4-IN / 310 models (TK-RE02) Maximum 45 m (150 ft .) long * Do NOT jump or short-circuit the wires, or the T-D2-IN / 510 model (TM-RE30) computer board will be damaged. -
Page 18: Pump Control Mode
Pump Control Mode • A communication cable (gray color) comes with each T-D2-IN / 510 model . (Available on the T-D2-IN / 510 model only) You can manifold from 2 to 4 units without the need for a The T-D2-IN / 510 water heaters can be used to control a Multi-Unit Controller . - Page 19 8 . Make sure the 7-Seg LED of all the units’ computer boards (C) Examples of incorrect settings and/or connections display the unit # . The numbering system automatically CASE 1: allocates the unit # to each water heater in the Easy-Link • Unless you change DIP switch No .
-
Page 20: Applications
APPLICATIONS CASE 3: • If you connect the “PARENT” connector of the “CHILD- Space-Heating Applications 1” unit to the “1” connector of the “CHILD-2” unit, the “CHILD-2” unit will operate as an individual unit, and will • In order to purge air in water pipes not be part of the Easy-Link System . -
Page 21: Recirculation
Recirculation • The recirculation pump is to be Air vent controlled by: • Dual-set aquastat (recommended w/timer) • “Pump Control Mode” (T-D2-IN / 510 Models only) . Refer to Unions pg . 18 . Pressure Hot water outlet to fixtures relief valve Ball valves • The recirculation pump is to... -
Page 22: Initial Operation
INITIAL OPERATION 1 . Once the above checks 2 . Fully open the manual FOR YOUR SAFETY, READ have been completed, water control valve or please clean filter of any valves on the water sup- BEFORE OPERATING debris . Refer to pg . 27 for ply lines . -
Page 23: Operating Safety
OPERATING 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 . Do not try to light the burner by hand . - Page 24 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 25: Normal Operation
.* with the hot to taps . correct temperature water . DIP switches (Right bank) DIP switches T-KJr2-IN / 110 & T-K4-IN / 310 Models Temperature Settings 50 °C 45 °C 55 °C 60 °C (122 °F) (113 °F) (131 °F) -
Page 26: Flow
Unit of Model Natural Gas Propane Measure L/hr T-KJr2-IN / • DO NOT adjust the left bank of DIP L/min 11 .4 11 .4 GPH (US) switches for the T-D2-IN / 510 model for GPM (US) temperature . L/hr • Turn off the power supply to the water T-K4-IN / L/min 15 .5... -
Page 27: Maintenance And Service
Maintenance and Service Unit Draining and Filter Cleaning Drain plug with Filter (Large) Turn off the electrical power supply and close the manual gas shutoff valve and the manual water control valve before servicing . WARNING Drain plug (Small) • Clean the cold-water inlet filter . (Refer to Unit draining Gas valve and filter cleaning section in this page .) Water valve... -
Page 28: Descaling The Unit
Descaling the Unit Hard water is a severe problem for the copper coils inside heat exchangers . Heat exchanger failure due to scale buildup from hard water conditions is NOT covered by warranty . It is highly suggested that a scale inhibitor be installed before the cold water inlet after this procedure is done . -
Page 29: Troubleshooting
TROUBLESHOOTING General PROBLEM SOLUTIONS It takes a long time to • The time it takes to deliver hot water from the water heater to your fixtures depends get hot water at the on the length of piping between the two . The longer the distance or the bigger the fixtures . - Page 30 PROBLEM SOLUTIONS Abnormal sounds from • Is the correct gas type of the water heater installed? tankless unit • Are the DIP switch settings for your altitude set correctly?(pg . 10) • Check the flame quality . • Is the intake or exhaust vent blocked? • Is the vent length and diameter correct?(pg .
-
Page 31: Error Codes
Example: If your water heater displays the “321” error code (which signifies an inlet thermistor failure) • T-KJr2-IN / 110 & T-K4-IN / 310 models: The red LED on the computer board will be blinking two times . • If the TK-RE02 is installed: “32” will display on the screen in its entirety . -
Page 32: Fault Analysis Of Error Codes
If the error code is displayed on the computer board of the water heater or remote controller, please check the following . After checking, consult with the manufacturer . T-KJr2-IN / 110 & T-K4-IN / 310 T-D2-IN / 510 Malfunction description... - Page 33 T-KJr2-IN / 110 & T-K4-IN / 310 T-D2-IN / 510 Malfunction description Diagnosis Red LED TK-RE02 TM-RE30 Two Times Output thermistor failure • Check for connection/breakage of wires and/or debris on thermistor (Part #407, Inlet thermistor failure 408, 411, 716) .
- Page 34 T-KJr2-IN / 110 & T-K4-IN / 310 T-D2-IN / 510 Malfunction description Diagnosis Red LED TK-RE02 TM-RE30 Five Times Imperfect combustion • Check the gas type of the water heater matches the gas supplied to it . • Inspect the environment around the water heater .
-
Page 35: Components Diagram
COMPONENTS DIAGRAM Case assembly T-K4-IN / 310 & T-D2-IN / 510 T-KJr2-IN / 110 Temperature remote controller T-D2-IN / 510 T-KJr2-IN / 110 & T-K4-IN / 310 TM-RE30 TK-RE02... -
Page 36: T-Kjr2-In / 110
Burner assembly T-KJr2-IN / 110 Burner assembly Fan motor section Manifold assembly T-KJr2-IN / 110 *Note: Fan motor section of this model does NOT have like T-K4-IN / 310 & T-D2-IN / 510. -
Page 37: T-K4-In / 310 & T-D2-In / 510
T-K4-IN / 310 & T-D2-IN / 510 Burner assembly 1 0 1 1 0 1 1 0 7 1 0 6 1 0 5 1 0 8 0 6 5 1 0 4 7 0 9 7 0 9 1 0 9 1 1 0 1 1 1 1 1 1... -
Page 38: Computer Board Assembly
Computer board assembly Computer board assembly T-KJr2-IN / 110 & T-K4-IN / 310 T-D2-IN / 510 1 0 3 7 1 0 7 0 1 7 0 1 7 0 7 7 1 7 7 0 8 7 1 8... -
Page 39: T-D2-In / 510
Water way assembly Water outlet section T-D2-IN / 510 4 6 3 4 5 6 4 5 3 4 1 3 4 6 0 4 0 9 4 5 2 4 5 0 4 1 4 4 1 2 0 6 3 4 5 4 4 5 5 4 0 8... -
Page 40: Parts List
Fan damper for T-KJr2-IN / 110 EK416 Bracket EKJ09 Fan damper for T-K4-IN / 310 & TU001 Back guard panel for T-KJr2-IN / 110 EX00M T-D2-IN / 510 Back guard panel for T-K4-IN / 310 EKK5H Pressure port for T-K4-IN / 310 & EKK2D &... - Page 41 Gas valve wire for T-KJr2-IN / 110 EKK3K & T-K4-IN / 310 Gas valve wire for T-D2-IN / 510 EKK10 Flame rod wire for T-KJr2-IN / 110 EK431 Flame rod wire for T-K4-IN / 310 EKK3L Flame rod wire for T-D2-IN / 510 EKK11 EH-IG wire for T-KJr2-IN / 110 &...
-
Page 42: Output Temperature Chart
OUTPUT TEMPERATURE CHART Chart is based on properly sized gas line T-KJr2-IN / 110 Model Output temperatue vs. GPM (Max. 6.6 GPM) with Various Inlet Water Temperature Set Temp. T-K4-IN / 310 Model Output temperatue vs. GPM (Max. 8.0 GPM) with Various Inlet Water Temperature... -
Page 43: Limited Warranty
(3) In all applications, the total of length of operation time must be less than 3,000 hours for the T-KJr2-IN / 110 and T-K4-IN / 310, and less than 9,000 hours for the T-D2-IN / 510 . (4) Includes dual-purpose applications (combination heating and domestic) . - Page 44 • Any product not installed in compliance with all applicable local & provincial codes, ordinances, and good trade practices . • Any product sold to or installed in areas outside of the fifty states (and the District of Columbia) of the United States of America and Canada . • Any product installed in applications that cause the water heater to activate more than 300 times per day . (This averages to an activation every 5 minutes in a 24-hour period .) • Any failures that are not due to defects in materials or workmanship (mechanical and/or electrical parts). • Damages due to improper installation: • Gas: incorrect gas pipe sizing, incorrect gas meter sizing, incorrect gas type, and/or gas pressures that fall outside the product’s specified range .
Need help?
Do you have a question about the T-KJr2-IN / 110 and is the answer not in the manual?
Questions and answers