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  5. Installation Manual And Owner's Manual

Takagi T-H3M-DV Installation Manual And Owner's Manual

Manual is about: On-demand

Summary of T-H3M-DV

  • Page 1

    Gas tankless water heater tm suitable for potable water heating and space-heating please refer to local codes for space-heating compliance. If you have any questions, please call or write to: 500 tennessee waltz parkway ashland city, tn 37015 toll free: 1-877-737-2840 warning - do not store or use g...

  • Page 2: Contents

    2 page installation manual contents contents installation manual specifications 4 introduction 5 safety guidelines 6 installation 7 general 7 included accessories 9 clearances 9 venting instructions 10 gas supply and gas pipe sizing 20 water connections 22 condensate drain 23 electrical connections ...

  • Page 3: Installation Manual

    3 page installation manual installation manual congratulations congratulations and thank you for choosing our tankless water heater before use, we recommend that you read through this safety manual carefully please refer to the back of the manual for details about the warranty keep this manual for f...

  • Page 4: Specifications

    4 page installation manual specifications specifications *40 psi (027 mpa) or above is recommended for maximum flow ** the manifold pressure is the factory setting and shouldnotneedadjustment note: • check the rating plate to ensure this product matches your specifications • in accordance with ansi ...

  • Page 5: Introduction

    5 page introduction installation manual 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 insta...

  • Page 6: Safety Guidelines

    6 page safety guidelines safety definition indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury danger warning indicates an imminently hazardous situation which, if not avoided, could result in death or serious injury caution indicates an imminent...

  • Page 7: Installation

    7 page installation manual installation general 1. Follow all local codes, or in the absence of local codes, follow the most recent edition of the national fuel gas code: ansi z2231/nfpa 54 in the usa or can/csa b1491 natural gas, propane installation code in canada 2. All gas water heaters require ...

  • Page 8

    8 page installation installation manual • installationandservicemustbeperformedbyaqualifiedinstaller(forexample,a licensedplumberorgasfitter),otherwisethewarrantywillbevoid. • the installer (licensed professional)is responsible for the correct installation of thewaterheaterandforcompliancewithallnat...

  • Page 9

    9 page installation installation manual included accessories check that these items below are included with the water heater installationmanual andowner’sguide temperatureremotecontrollerkit* outdoormodelonly birdscreen indoormodelonly qty: 1 qty: 2 qty: 1 *for more information on optional items, pl...

  • Page 10: -General-

    10 page installation installation manual venting instructions for the 140 indoor (t-h3m-dv) model -general- • improper venting of this appliance can result in excessive levels of carbon monoxide which can result in severe personal injury or death • improper installation can cause nausea or asphyxiat...

  • Page 11

    11 page installation installation manual -exhaust vent (abs, pvc, cpvc, or polypropylene vent)- the indoor model can be vented with abs, pvc, cpvc, or polypropylene (temperature rated up to at least 149 °f) vent material certified to ulc s636 standards is recommended in the usa in canada, plastic ve...

  • Page 12

    12 page installation installation manual -dipswitch settings for vent length- ventlength two-pipeandsinglepipe 5to50ft. (default) no 6 : on no 7 : off 51to100ft. No 6 : off no 7 : off off on 1 2 3 4 5 6 7 8 9 10 off on 1 2 3 4 5 6 7 8 9 10 ventlength two-pipe 5to20ft. (default) no 6 : on no 7 : off ...

  • Page 13

    13 page installation installation manual -intake and exhaust venting illustrations- typicalinstallationsusing abs,pvc,cpvc,orpolypropylenevent 2inchventinstallation for details of the optional items, refer to the installation manual for each optional item singlepipewithroom-airintake termination han...

  • Page 14

    14 page installation installation manual 3inchventinstallation 1. Connecta3"elbowdirectlyonthe intake vent collar of the water heater 2. Connecta3"coupling directly on the exhaust vent collar of the water heater make sure the couplings engage the o-rings installed in the intake and exhaust vent coll...

  • Page 15

    15 page installation installation manual two-pipe,direct-vent singlepipewithroom-airintake terminations wall hanger hanger roof roof flashing fire stop termination wall hanger roof flashing fire stop roof refertopages17and19forclearanceinformation examplesofinstallationof3inch&4inchvent.

  • Page 16

    16 page installation installation manual ventconnectionsfortwo-pipe 4" stainless steel vent straight pipe exhaust vent collar (female) intake vent collar (female) 4" stainless steel vent straight pipe exhaust vent collar (female) 4" stainless steel vent straight pipe intake vent collar (female) 4"el...

  • Page 17

    17 page installation installation manual -vent termination clearances- canada usa 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...

  • Page 18

    18 page installation installation manual for multiple sidewall exhaust terminations, an exhaust termination must be at least 1 ft (305mm) away from another exhaust termination an exhaust termination must also be at least 2 ft (610 mm) away from an inside corner (if the adjacent wall is less than 2 f...

  • Page 19: Forrooftopterminations>

    19 page installation installation manual forrooftopterminations> exhaust and/or direct-vent sidewall terminations should be at least 2 ft (610 mm) away from an opposite surface/ wall do not place the termination directly in front of an opening into a building intake air exhaust gas 3 ft (914 mm) min...

  • Page 20: -General-

    20 page installation installation manual gas supply and gas pipe sizing -general- • the minimum and maximum inlet gas pressures are: • inlet gas pressures that fall outside the range of values listed above may adversely affect the performance of the water heater these pressures are measured when the...

  • Page 21: -Natural Gas Supply Piping-

    21 page installation installation manual -natural gas supply piping- maximum delivery capacity of cubic feet of gas per hour of ips pipe carrying natural gas with 060 specific gravity based on pressure drop of 05" wc basedonenergycontentof1,000btu/cubicft.:thewaterheaterrequires120cubicft./hrforthe1...

  • Page 22

    22 page installation installation manual -measuring inlet gas pressure- the water heater cannot perform properly without sufficient inlet gas pressure below are instructions on how to check the inlet gas pressure thisisonlytobedonebyalicensedprofessional water connections all pipes, pipe fittings, v...

  • Page 23

    23 page installation installation manual follow all code requirements of the local authority on condensate neutralizers and whether or not they are required for the installation condensate drain port -pressure relief valve- the water heater has a high-temperature shutoff switch built in as a standar...

  • Page 24

    24 page installation installation manual warning dischargecondensate(acidicwater)inaccordancewithalllocalcodes andcommonsafetypractices. Condensate drain port 1/2" condensate drain tube adequate space drain 1/2" fpt x 3/8" mpt (included with neutralizer accessory) neutralizer cartridge (included wit...

  • Page 25

    25 page installation installation manual 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 us or the latest edition of csa c221 canadian electrical code...

  • Page 26: -Installation-

    26 page installation installation manual fig.B back plate 3-1/4 inches attach the screws cut out the partition with pliers main body fig.A main body twist press and twist flat head screwdriver against the cutout only the outdoor model comes with the temperature remote controller, which is an optiona...

  • Page 27

    27 page installation installation manual remote controller terminals fig.C-1 two fork terminals remote controller cable inlet for the remote controller cable cut out fig.C-2 3. Tightenthetwo"forkterminals" beneath the two "remotecontrollerterminal" screws, which are not polarity-sensitive, on the ba...

  • Page 28

    28 page installation installation manual high-altitude installations check the elevation where your water heater is installed set dipswitches shown in the tables below depending on the altitude note:the dark squares indicate the direction the dipswitches should be set to only adjust the necessary sw...

  • Page 29: Applications

    29 page installation installation manual • inordertopurgeairinwaterpipeswithinaclosed-loopsystem,anairvent and air separator should be installed in the system. Required circulation flowratesarelabelednexttoeachapplicationdiagram.Theseflowrate requirementsmustbefollowed • toxic chemicals used in boil...

  • Page 30

    30 page • 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 • follow all local codes, or in the absence of local codes, follow the most recent edition of the national standard code, a...

  • Page 31: Initial Operation

    31 page ifyousmellgas: • do not try to start the water heater • do not touch any electric switches; 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 departm...

  • Page 32: Optional Items

    32 page optional items # model 140 indoor (t-h3m-dv) 140 outdoor (t-h3m-os) 1 temperature remote controller ✓ included with the water heater 2 4-inch backflow preventer and f-f adaptor ✓ 3 pipe cover ✓ ✓ 4 neutralizer kit ✓ ✓ 5 4-inch exhaust sidewall vent terminator (hood) and 4-inch wall thimble ✓...

  • Page 33

    33 page used when terminating direct-vent (sealed combustion) systems, with indoor models that require a 3 in (76 mm) intake and a 3 in (76 mm) exhaust this concentric termination provides the convenience of only having to make one penetration through a sidewall instead of two separate penetrations ...

  • Page 34: Owner'S Guide

    34 page owner's guide congratulations congratulations and thank you for choosing our tankless water heater before use, we recommend that you read through this safety manual carefully please refer to the back of the manual for details about the warranty keep this manual for future reference if you lo...

  • Page 35: Operating Safety

    35 page warning: if you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life operating safety foryoursafetyreadbeforeoperating a this water heater does not have a pilot it is equipped with an ignition device that automatica...

  • Page 36: Danger

    36 page danger vaporsfromflammableliquidswillexplodeandcatchfirecausingdeathorsevereburns. Do not use or store flammable products such as gasoline, solvents or adhesives in the same room or area near the water heater warning the outlet hot water temperature of the water heater is factory set at 120 ...

  • Page 37: Normal Operation

    37 page display of the controller theillustrationbelowshowsanexampleofthedisplayofthecontrollers.Theexactdisplaymaydifferfromexamples. Temperature above 125 °f (52 °c) can cause severe burns or death from scalding children, disabled and the elderly are at high risk of being injured caution • flow ra...

  • Page 38

    38 page operation screenonthecontroller 1. Turn on the 120 vac power supply to the water heater 2. Press the "on/off" button on the controller in order to turn the controller on 3. When on, the stand by led is lit 4. It shows the set temperature on its display as shown in the picture on the right (e...

  • Page 39

    39 page operation screenonthecontroller 1. I nlet water temperature will be displayed on the controller by pressing the "info"button 2. Outlet water temperature will be displayed on the controller by pressing the "info"button 3. Water flow rate, in gpm, will be displayed on the controller by pressin...

  • Page 40

    40 page flow • this water heater comes equipped with heating blocks to protect it against damage associated with freezing • for this freeze protection system to operate, there has to be electrical power to the water heater damage to the heat exchanger caused by freezing temperatures due to power los...

  • Page 41

    41 page maintenance and service • clean the cold-water inlet filter (refer to the unit draining and filter cleaning section on this page) • be sure that all openings for combustion and ventilation air are not blocked • the venting system should be checked annually for any leaks, corrosion, blockages...

  • Page 42

    42 page 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 pr...

  • Page 43: Troubleshooting

    43 page troubleshooting general problem solutions tempera ture and amount of ho t 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 th...

  • Page 44

    44 page problem solutions w ater he ater unit does not ignite when water goes through the unit • is the power on the water heater? • is the gas on? • is the flow rate over 05 gpm (19 l/min)? (p 37) • is the filter on cold water inlet clean? (p 41) • check for reverse connection and cross connection ...

  • Page 45

    45 page error code green led errorcodeindicatoronthetemperature controllerattachedtoasurfaceofthe140 indoor(t-h3m-dv)modelandtheremote controller9008172005(tm-re40). Error codes -general- • the water heater has self-diagnostics for safety and convenience when troubleshooting • if there is a problem ...

  • Page 46

    46 page remote green led malfunction description diagnosis 031 one time incorrect dipswitch setting • check the dipswitch settings on the pcb (part #701) 101 five times warning for the “991” error code • check if the gas type of the water heater matches the gas supplied to it • check if there is any...

  • Page 47

    47 page remote green led malfunction description diagnosis 391 two times air-fuel ratio rod failure • check for connection/breakage of wires (part #708) and/or soot on the afr rod (part #108) 510 six times abnormal main gas solenoid valve • check for connection/breakage of wires (part #707) and/or b...

  • Page 48: Caseassembly

    48 page caseassembly temperature remotecontroller indoor model outdoor model 702 704 052 052 052 006 704 005 052 004 004 001 007 003 050 002 001 714 002 temperaturecontroller indoormodel components diagram components diagram owner's guide 723 722 721 056 721 724.

  • Page 49: Computerboardassembly

    49 page computerboardassembly surgeboxassembly 709 710 103 708 402 707 701 711 716 402 407 408 060 713 706 for indoor model for outdoor model 701 710 703 120 053 705 712 712 components diagram owner's guide.

  • Page 50: Burnerassembly

    50 page burnerassembly 101 401 116 053 117 103 105 064 054 104 115 053 053 106 107 108 708 110 061 109 111 709 112 053 114 113 707 102 053 120 709 150 057 055 062 053 711 117 055 119 151 118 051 manifold assembly burner assembly components diagram owner's guide.

  • Page 51: Waterwayassembly

    51 page waterwayassembly c d d c 461 452 412 153 152 417 466 064 411 058 413 450 053 415 403 052 467 463 063 455 458 462 413 451 451 413 451 414 414 451 052 409 457 460 453 408 059 454 410 416 455 458 402 459 457 404 406 456 405 052 453 407 059 416 053 417 a b a b 401 154 e e 467 463 063 455 458 455...

  • Page 52: Parts List

    52 page parts list item# description part# 140model t-h3mmodel 001 case assembly for indoor model case assembly for outdoor model n/a n/a ek450 ek451 002 front cover for indoor front cover for outdoor n/a n/a ek452 ek453 003 004 005 006 007 intake air port assembly bracket junction box power supply ...

  • Page 53

    53 page item# description part# 140model t-h3mmodel 150 151 152 153 154 o-ring p18 nbr (black) o-ring p20 nbr (black) silicon ring for outdoor model exhaust port for outdoor model silicon ring 319143-350 319143-057 319143-370 319143-121 319143-065 ezp18 ek042 ek442 ex13j ekn50 401 heat exchanger ass...

  • Page 54: Output Temperature Chart

    54 page item# description part# 140model t-h3mmodel 701 computer board 320273-369 ek480 702 703 704 rubber grommet surge box 120 vac wire for indoor model 120 vac wire for outdoor model 319143-426 320273-128 319143-427 319143-546 ex148 ek280 ek146 ek143 705 706 707 120 vac power on-off switch remote...

  • Page 55: Limited Warranty

    55 page limited warranty applicationtype heatexchanger parts labor (1) single family domestic hot water 15 (2)(3) 5 1 commercial or multi-family domestic hot water 10 (2)(3) heating 10 (3)(4) [unit: year] 1 the manufacturer warrants this product against defects in materials or workmanship as describ...

  • Page 56

    88a161 • freezedamagethatoccurswithouttakingproperpreventivemeasuresasdescribedintheinstallation manual • condensatedamageduetoimproperlyinstalledorlackofacondensatetrap(drain). • anyproductnotinstalledincompliancewithallapplicablelocal&provincialcodes,ordinances,and good trade practices • anyproduc...