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Takagi T-K3 Installation Manual And Owner's Manual

Other manuals for T-K3: Service Manual
Manual is about: Instantaneous Water Heater

Summary of T-K3

  • Page 1

    - 1 - t-k3 / t-k3-pro on-demand water heater installation manual and owner’s guide featuring • endless hot water • on demand usage • compact, space saving • energy conservation • computerized safety • no pilot light • easy link system warning this product must be installed and serviced by a licensed...

  • Page 2: Contents

    - 2 - contents *40 psi or above is recommended for maximum flow note *check the rating plate to ensure this product matches your specifications. *in accordance with ansi z21.10.3 and scaqmd rule 1146.2, co emission does not exceed 400 ppm for normal input specifications t-k3 and t-k3-pro natural gas...

  • Page 3: Introduction

    - 3 - introduction 1. A hot water tap is turned on. 2. Water enters the heater. 3. The water flow sensor detects the water flow. 4. The computer automatically ignites the burner. 5. Water circulates through the heat exchanger and then gets hot. 6. The computer will modulate the gas supply valve and ...

  • Page 4: Safety Guidelines

    - 4 - 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/t-k3-pr...

  • Page 5: Installation

    - 5 - installation all gas water heaters require careful and correct installation to ensure safe and efficient operation. This manual must be followed exactly. Read the “safety guidelines” section at the beginning of this manual. • the warranty will not cover damage caused by water quality. Water ha...

  • Page 6: General

    - 6 - 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, p.8 and p. 9 for proper clearances. 3. The electrical ...

  • Page 7

    - 7 - warning for installation locations do not install the heater where water, debris or flammable vapors may get into the flue terminal. This may cause damage to the heater and void the warranty. Do not have the vent terminal pointing toward any opening into a building. Do not locate your heater i...

  • Page 8: Outdoor Installation

    - 8 - the dark square is the direction the dipswitch should be set to. Keep the clearances. Outdoor installation 1. Follow all local codes, or in the absence of local codes, follow the most recent edition of the national fuel gas code: ansi z223.1/nfpa 54 in the usa or can/csa b149.1 natural gas, pr...

  • Page 9: Indoor Installation

    - 9 - keep the clearances. Indoor installation 1. Follow all local codes, or in the absence of local codes, follow the most recent edition of the national fuel gas code: ansi z223.1/nfpa 54 in the usa or can/csa b149.1 natural gas, propane installation code in canada. 2. When installed indoors, the ...

  • Page 10: Direct Intake Vent System

    - 10 - the dark square is the direction the dipswitch should be set to. Direct intake vent system this t-k3/t-k3-pro water heater may be converted to a direct vent (sealed combustion) appliance by installing an adapter (part no. Tk-tv10) which will bring all required combustible air from outside the...

  • Page 11: Venting Instructions

    - 11 - venting instructions warning: improper venting of this appliance can result in excessive levels of carbon monoxide which can result in severe personal injury or death. This water heater must be vented in accordance with the section “venting of equipment" of the latest edition of the natural f...

  • Page 12: Vent Termination

    - 12 - vent termination warning: improper installation can cause nausea or asphyxiation, severe injury or death from carbon monoxide and flue gases poisoning. Improper installation will void product warranty. • the vent terminator provides a means of installing vent pipe through the building wall an...

  • Page 13

    - 13 - horizontal installation diagram vertical installation diagram • regarding the clearance from the terminator to the air inlet or opening, refer to the next page. • install a condensation drain in the venting. • follow the vent system to vent manufacturer’s instruction and local code. • do not ...

  • Page 14: Vent Clearances

    - 14 - vent clearances canada u.S.A direct vent and other than direct vent direct vent other than direct vent a clearance above grade, veranda, porch, deck, or balcony. 1 foot 1 foot 1 foot b clearance to window or door that may be opened. 3 feet 1 foot 4 feet from below or side opening. 1 foot from...

  • Page 15: Additional Clearances

    - 15 - additional clearances 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. For sidewall terminations exhaust termination 1ft. 1ft. 2ft. ...

  • Page 16

    - 16 - for rooftop terminations a a 2ft. Exhaust termination air intake a a a air intake exhaust termination for multiple-unit rooftop terminations (whether for standard indoor or direct-vent installations) space all exhaust and intake terminations in accordance with local codes. An exhaust terminat...

  • Page 17

    - 17 - gas supply and gas pipe sizing 1. Turn off all electric power to the water heater if service is to be performed. 2. Turn the manual gas valve located on the outside of the unit clockwise 3 to the off position. Warning: conversion of this unit from natural gas to propane or vise versa cannot b...

  • Page 18: Natural Gas Supply Piping

    - 18 - size the gas pipe appropriately to supply the necessary volume of gas required for the t-k3/t-k3-pro (199,000 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 ...

  • Page 19: Water Connections

    - 19 - water connections 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. 1. All pipes, pipe fittings, valves and other components, including soldering materials, must be su...

  • Page 20: Pressure Relief Valve

    - 20 - pressure relief valve the flash t-k3/t-k3-pro 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. 1. This unit does not come with an approved pressure relief valve. 2. An approved pressur...

  • Page 21: Electrical Connections

    - 21 - 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 co...

  • Page 22

    - 22 - remote controller connection 1) disconnect power supply from the t-k3/t-k3-pro. 2) take off the t-k3/t-k3-pro’s front cover. 3) please find the remote control terminal using the picture below (located around the lower right-hand side of the computer board). 4) open the plastic cover of the tm...

  • Page 23: Easy Link System

    - 23 - easy link system the t-k3/t-k3-pro can be connected with other t-k3/t-k3-pro’s with communication cables to work as a multiple manifold system. • the easy link system can connect up to 4 units. • a communication cable (gray color) comes with each unit. You can manifold from 2 units to 4 units...

  • Page 24

    - 24 - the dark squares indicate the direction the dipswitches should be set to. Easy link connection procedures 1. Choose one of your units as the “ master ” unit. 2. “ the master ” locate the bank of dipswitches to the right of the 7-seg. Led on the computer board of the t- k3/t-k3-pro that you se...

  • Page 25

    - 25 - m a s t e r s l a v e o u t m s t off on d i r e o u t t m p 3 t m p 2 t m p 1 1 2 3 4 5 6 communication cable s l a v e i n connectors dipswitch m a s t e r s l a v e o u t m s t off on d i r e o u t t m p 3 t m p 2 t m p 1 1 2 3 4 5 6 s l a v e i n connectors dipswitch m a s t e r s l a v e...

  • Page 26: Pump Connection

    - 26 - • if the tm-re30 or the tm-re10 remote controller (optional) has to be connected to the “ master ” unit. If the tm-re30 or the tm-re10 is connected to a “ slave ” unit, it will only control that particular individual “ slave ” unit and will not control the easy link system as a whole. Pump co...

  • Page 27: Initial Operation

    - 27 - initial operation • 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. If the knob will not turn by hand, do not try to force it; call a qualified service tec...

  • Page 28: Normal Operation

    - 28 - (unit:°f) temperatures available under the high temperature mode normal operation • flow rate to activate the t-k3/t-k3-pro : 0.5 gallon per minute • flow rate to keep the t-k3/t-k3-pro running : 0.4 gallon per minute 1. Normal operation without remote controller 1. Open a hot water tap. 2. M...

  • Page 29: Flow

    - 29 - flow • the flow rate through the flash t-k3/t-k3-pro is limited to a maximum of 7.0 gpm. • the temperature setting, along with the supply temperature of the water will determine the flow rate output of the unit. • please refer to the temperature vs. Gallons per minute chart on p. 46 to determ...

  • Page 30: Temperature Settings

    - 30 - the dark squares indicate the direction the dipswitches should be set to. Temperature settings the dark squares indicate the direction the dipswitches should be set to. Temperature settings • there are 8 preset temperatures that you can select from by changing the dipswitch settings on the co...

  • Page 31: Maintenance And Service

    - 31 - drain plug with filter water valve drain plug gas valve maintenance and service warning: turn off the electrical power supply and close the manual gas control valve and the manual water control valve before servicing. • clean the cold-water inlet filter. (refer to diagram below) • be sure tha...

  • Page 32: General Troubleshooting

    - 32 - general troubleshooting ~ temperature and amount of hot water ~ problem possible solutions it takes long time to get hot water at the fixtures. • the time it takes to deliver hot water from the t- k3/t-k3-pro to your fixtures depends on the length of piping between the two. The longer the dis...

  • Page 33: ~ Water Heater ~

    - 33 - ~ water heater ~ problem possible solutions unit does not ignite when water goes through the unit. • is the flow rate over 0.5 gpm? (p. 28) • check for the filter on cold water inlet. (p. 31) • check for reverse connection and cross connection. • if you use the remote controller, is the power...

  • Page 34

    - 34 - 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 tm-re30 (if installed) or on the 7-seg led at the bottom left corner ...

  • Page 35: Wiring Diagram

    - 35 - wiring diagram a wiring diagram is located on the inside front panel of the appliance. 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 ...

  • Page 36: Operating Safety

    - 36 - 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 aut...

  • Page 37: Danger

    - 37 - 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: 1. Far away from heater. 2. In approved conta...

  • Page 38: Applications

    - 38 - 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 t-k3/t-k3-pro can be used to supply potable water and sp...

  • Page 39

    - 39 - dual-purpose hot water heating (domestic and space heating): priority control devices such as a flow switch, an aquastat or other electronic controller can be used to prioritize the domestic water system over the heating system. Warning: follow all local codes, or in the absence of local code...

  • Page 40: Optional Items

    - 40 - optional items 1. Tm-re30 temperature remote controller the tm-re30 temperature remote controller has two functions. It allows the output temperature from the t-k3/t-k3- pro to be adjusted within the range of 99 °f to 185 °f, and it also works as a diagnostic tool that will give a concise err...

  • Page 41: Components Diagram

    - 41 - components diagram case assembly computer board assembly 7 0 8 7 0 1 7 0 9 7 1 0 7 1 1 1 0 4 7 1 4 7 1 5 7 1 6 7 1 7 7 1 2 00 1 00 5 00 3 05 1 0 5 0 7 0 2 0 5 1 0 5 1 0 04 0 5 2 05 2 0 0 7 0 5 2 0 5 2 70 6 70 7 05 3 05 2 0 5 4 0 5 3 05 0 0 0 6 0 0 2 other than the front cover (no.7), all of t...

  • Page 42

    - 42 - burner assembly the t-k3 and the t-k3-pro share the same components. 4 0 1 1 0 7 1 1 2 7 1 6 1 0 1 1 1 4 1 1 7 1 1 5 1 0 6 1 5 1 1 5 1 1 1 6 1 1 0 1 5 1 1 5 1 1 2 4 1 1 9 1 1 8 1 5 0 1 5 6 1 1 1 1 0 4 1 5 7 7 0 5 1 5 3 7 0 3 1 2 1 1 5 0 1 5 0 7 1 8 7 0 9 1 5 0 1 5 0 1 0 3 1 5 2 1 2 0 1 2 3 1 ...

  • Page 43

    - 43 - water way assembly 4 0 9 4 5 1 4 0 3 4 5 2 4 5 9 4 1 3 4 1 2 4 5 4 4 5 8 4 0 1 4 1 1 4 1 5 4 1 0 4 0 2 4 5 7 4 5 2 4 0 4 0 5 2 4 1 8 4 1 7 4 1 6 4 5 3 4 1 2 4 5 4 4 5 8 4 0 5 4 5 6 4 0 8 4 5 0 4 0 6 4 5 0 0 5 2 4 1 9 4 5 5 4 5 6 4 1 4 4 5 8 4 5 4 4 6 0 4 0 7 4 5 6 t-k3-pro heat exchanger 4 2 ...

  • Page 44: Parts List

    - 44 - parts list item# part# description item# part# description 1 ekk1d case assembly 122 ekk1b igniter plate 2 ekk1j front cover for t-k3 123 em167 wire clamp 60 3 ekj62 air blockage plate 124 ekk2x burner gasket 4 ekj09 bracket 125 ekk2k manifold gasket b 5 ekj64 junction box 150 ew003 screw m4×...

  • Page 45

    - 45 - item# part# description item# part# description 418 ekk2p inlet heater 705 ekj59 freeze protection thermostat 419 ekk2e outlet drain plug 706 ekn37 fuse assembly 420 ek322 heat exchanger assembly for t-k3-pro 707 ekj66 junction box inner plate 450 ew009 screw m4×6 708 ekk1m computer board cov...

  • Page 46

    - 46 - out put temperature vs. Gpm (max.7.0 gpm) with various ground water temperature correct gas pipe size can be expect this chart 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 out put hot water temperature o u t p u t h o t w a ter g p m 40 f 50 f 60 f 70 f 40 f 6.5 5.9 5.4 5.0 4.7 4.3 4.1 3.8 3.6 3.4 3.3 3.0...

  • Page 47: Warranty

    - 47 - warranty takagi units must be installed by licensed professionals ; installation done by anyone other than licensed professionals will result in the nullification of the takagi warranty . To be protected by the warranty, the enclosed warranty card must be completed and returned within 45 days...

  • Page 48

    - 48 - 44r018-1 m-001-tk3-tk3pro-0