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  5. Installation Manual And Owner's Manual

Takagi T-D2-IN / 510 Installation Manual And Owner's Manual

Manual is about: On-Demand Water Heater

Summary of T-D2-IN / 510

  • Page 1

    65q012-6 rev. 06(04-15) gas tankless water heater tm suitable for potable water heating and space-heating* * please refer to local codes for space-heating compliance. Featuring • endlesshotwater • on-demandusage • compact,spacesaving • energyconservation • computerizedsafety • nopilotlight • easy-li...

  • Page 2: Table Of Contents

    2 installation manual specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 safety guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 safety definitions . . . . . . . . . . . . ....

  • Page 3

    3 specifications model t-kjr2-in / 110 t-k4-in / 310 t-d2-in / 510 natural gas input (operating range) min .: 19,500 btu/h max .: 140,000 btu/h min .: 11,000 btu/h max .: 190,000 btu/h min .: 11,000 btu/h max .: 199,000 btu/h propane input (operating range) min .: 19,500 btu/h max .: 140,000 btu/h m...

  • Page 4

    4 introduction • this manual provides information necessary for the installation, operation, and maintenance of the water heater . • the model description is listed on the rating plate which is attached to the side panel of the water heater . • please read all installation instructions completely be...

  • Page 5

    5 danger warning • water temperatures over 52 °c (125 °f) can cause severe burns instantly or death from scalding . The water temperature is set at 50 °c (122 °f) from the factory to minimize any scalding risk . Before bathing or showering always check the water temperature . • do not store or use g...

  • Page 6

    6 warning • installation and service must be performed by a qualified installer (for example, a licensed plumber or gas fitter), otherwise the warranty will be void. • the installer (licensed professional) is responsible for the correct installation of the water heater and for compliance with all na...

  • Page 7: Warning For Installation

    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 point- ing toward any opening into a build- ing . Do not locate your h...

  • Page 8

    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)*, a...

  • Page 9

    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 . (refe...

  • Page 10

    10 high-altitude installations check the elevation where your water heater is installed . Set dip switches shown in the table below depending on the altitude . T-kjr2-in / 110 & t-k4-in / 310 models altitude 0 to 2,000 ft (default) 2,001 to 4,000 ft 4,001 to 6,000 ft switch no . 3 off on off switch ...

  • Page 11

    11 exhaust venting this is a category iii appliance and must be vented accordingly . The vent system must be sealed airtight . All seams and joints without gaskets must be sealed with high heat resistant silicone sealant or ul listed aluminum adhesive tape having a minimum temperature rating of 177 ...

  • Page 12

    12 horizontal installation diagram (with direct-venting) wall sidewall vent terminations backflow preventer* vertical condensation drain** see the picture below for detailed connection instructions to the direct-vent conversion kit . Vertical installation diagram (with direct-venting) fire stop hang...

  • Page 13

    13 vent termination 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...

  • Page 14

    14 caution 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 inside corner exhaust terminations 610 mm (2 ft .)...

  • Page 15

    15 gas supply and gas pipe sizing general warning • check that the type of gas matches the rating plate first. • ensure that any and all gas regulators used are operating properly and providing gas pressures within the specified range shown below. Excess gas inlet pressure may cause serious accident...

  • Page 16

    16 2 . In addition, a manual shutoff valve is also recommended on the hot water outlet of the unit . If the water heater is installed within, or subjected to, a closed loop water system, a thermal expansion tank must be installed on the return side . We recommend isolation valve sets with hose bibs ...

  • Page 17

    17 remote controller connections to connect the remote controller to the water heater: 1 . Disconnect power supply from the water heater . 2 . Take off the water heater’s front cover . 3 . Wires used for the remote controller connection must be: • minimum 20 gauge wire (no polarity) • t-kjr2-in / 11...

  • Page 18

    18 pump control mode (available on the t-d2-in / 510 model only) the t-d2-in / 510 water heaters can be used to control a recirculation pump . Proper pump control helps to preserve the life of the system and saves energy as well . The water heater pump control port is a “normally-open dry contact”, ...

  • Page 19

    19 8 . Make sure the 7-seg led of all the units’ computer boards display the unit # . The numbering system automatically allocates the unit # to each water heater in the easy-link system, in accordance with the table below . Parent unit unit #: 1 child units unit #: 2, 3 or 4 (a) t-d2-in / 510 compu...

  • Page 20

    20 case 3: • if you connect the “parent” connector of the “child- 1” unit to the “1” connector of the “child-2” unit, the “child-2” unit will operate as an individual unit, and will not be part of the easy-link system . Communication cable connectors right bank of dipswitches off on 1 2 3 4 5 6 pare...

  • Page 21

    21 recirculation dual-purpose hot water heating with t-d2-in / 510 model only (domestic and space heating): diagramatic layout of radiant heating and domestic water heater . The recirculation pump is to provide no less than 7 .5 l/min (2 gpm (us)) and no more than 15 l/min (4 gpm (us)) through each ...

  • Page 22: For Your Safety, Read

    22 initial operation for your safety, read before operating • check the gas and water connections for leaks before firing unit 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 t...

  • Page 23: Operating Instructions

    23 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 auto...

  • Page 24: Danger

    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: 1 . Far away from heater 2 . In approved contai...

  • Page 25

    25 normal operation general note: • flow rate to activate the water heater: 1 .9 l/min (0 .5 gallons (us) per minute) . • flow rate to keep the water heater running: 1 .5 l/min (0 .4 gallons (us) per minute) . 1 . Open a hot water tap .* 2 . Mix cold water with the hot to get the correct temperature...

  • Page 26

    26 warning • do not adjust the left bank of dip switches for the t-d2-in / 510 model for temperature . • turn off the power supply to the water heater before changing the dip switch settings . • only change the switches with the dark squares . The dark squares indicate which direction the dip switch...

  • Page 27

    27 maintenance and service warning turn off the electrical power supply and close the manual gas shutoff valve and the manual water control valve before servicing . • clean the cold-water inlet filter . (refer to unit draining and filter cleaning section in this page .) • be sure that all openings f...

  • Page 28

    28 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 pro...

  • Page 29

    29 troubleshooting general problem solutions tempera ture and amount of hot w ater it takes a long time to get hot water at the fixtures . • the time it takes to deliver hot water from the water heater to your fixtures depends on the length of piping between the two . The longer the distance or the ...

  • Page 30

    30 problem solutions w ater hea ter abnormal sounds from tankless unit • is the correct gas type of the water heater installed? • 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 diamet...

  • Page 31

    31 error codes • the water heaters have built in self-diagnostics for safety and convenience when troubleshooting . • if there is a problem with the installation or the unit, the t-d2-in /510 model will display a numerical error code on the 7-seg led on the computer board, and the t-kjr2-in / 110 & ...

  • Page 32

    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 diagnosis red led tk-re02...

  • Page 33

    33 t-kjr2-in / 110 & t-k4-in / 310 t-d2-in / 510 malfunction description diagnosis red led tk-re02 tm-re30 two times 31 32 311 321 output thermistor failure • check for connection/breakage of wires and/or debris on thermistor (part #407, 408, 411, 716) . • check the resistance . Inlet thermistor fai...

  • Page 34

    34 t-kjr2-in / 110 & t-k4-in / 310 t-d2-in / 510 malfunction description diagnosis red led tk-re02 tm-re30 five times 99 991 imperfect combustion • check the gas type of the water heater matches the gas supplied to it . • inspect the environment around the water heater . Determine how long the unit ...

  • Page 35

    35 components diagram case assembly t-kjr2-in / 110 temperature remote controller t-kjr2-in / 110 & t-k4-in / 310 tk-re02 t-k4-in / 310 & t-d2-in / 510 t-d2-in / 510 tm-re30 002 050 702 052 007 052 052 001 004 051 720 704 721 052 003 052 004 001 052 003 002 050 702 052 007 052 051 720 704 721 722 72...

  • Page 36

    36 burner assembly t-kjr2-in / 110 burner assembly manifold assembly fan motor section t-kjr2-in / 110 *note: fan motor section of this model does not have 116 or 117 like t-k4-in / 310 & t-d2-in / 510. 101 709 111 065 108 712 107 110 106 109 706 053 121 053 703 053 704 705 053 105 104 401 059 052 1...

  • Page 37

    37 t-k4-in / 310 & t-d2-in / 510 1 1 6 1 1 7 0 5 3 1 0 3 0 5 4 1 1 5 0 57 0 58 7 13 1 06 10 7 1 0 8 1 0 9 1 1 0 0 6 5 7 1 2 1 2 1 70 3 0 5 3 7 0 6 70 4 70 5 1 20 0 5 3 7 1 1 0 53 7 1 4 0 6 2 0 5 5 1 21 70 3 0 5 3 70 4 70 5 4 0 1 1 0 4 1 0 5 0 5 2 05 3 1 1 2 11 3 11 4 7 08 0 6 7 06 6 0 55 0 6 2 0 5 3...

  • Page 38

    38 computer board assembly t-kjr2-in / 110 & t-k4-in / 310 70 1 7 07 7 09 7 14 7 1 0 7 0 8 10 3 4 02 4 0 2 4 07 4 08 71 9 water way assembly t-kjr2-in / 110 46 3 41 3 453 4 14 412 063 451 b c 401 414 452 450 computer board assembly t-d2-in / 510 7 07 7 10 7 08 7 15 1 03 7 17 7 18 70 1 7 09 7 19 7 1 ...

  • Page 39

    39 water way assembly t-d2-in / 510 403 462 458 460 456 45 4 411 459 463 413 452 450 453 451 414 b c 401 414 412 063 bypass section water outlet section 456 460 409 455 410 454 408 06 4 c water inlet section 402 461 458 052 415 064 4 60 4 56 4 0 4 406 4 05 4 54 4 07 4 57 b.

  • Page 40

    40 parts list item # description part # 1 case assembly for t-kjr2-in / 110 ek415 case assembly for t-k4-in / 310 & t-d2-in / 510 ek402 2 front cover for t-kjr2-in / 110 ek419 front cover for t-k4-in / 310 ek403 front cover for t-d2-in / 510 ek434 3 air blockage plate for t-kjr2-in / 110, t-k4-in / ...

  • Page 41

    41 item # description part # 459 fastener "4-11" for t-d2-in / 510 ekh30 460 fastener "14-22" ekk24 461 fastener “16a” em192 462 fastener “16-25a” for t-d2-in / 510 ekk39 463 silicon ring ekn50 701 computer board for t-kjr2-in / 110 ek420 computer board for t-k4-in / 310 ek414 computer board for t-d...

  • Page 42

    42 output temperature chart chart is based on properly sized gas line t-kjr2-in / 110 model t-k4-in / 310 model output hot w ater gpm incoming temp. Output temperatue vs. Gpm (max. 8.0 gpm) with various inlet water temperature set temp t-d2-in / 510 model *when the set temperature is 55 °c (131 °f) ...

  • Page 43

    43 limited warranty 1 . The manufacturer warrants this product against defects in materials or workmanship as described in this document if installed within the united states or canada . The manufacturer or its authorized service representative will, at its sole discretion, repair or replace any fai...

  • Page 44

    If you have any questions, please call 1-888-479-8324 65q012-6 • anyproductnotinstalledincompliancewithallapplicablelocal&provincialcodes,ordinances,and good trade practices . • anyproductsoldtoorinstalledinareasoutsideofthefiftystates(andthedistrictofcolumbia)of the united states of america and can...