Takagi T-H3J-DV Installation Manual And Owner's Manual
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Takagi T-H3J-DV Installation Manual And Owner's Manual

On-demand water heater
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See also: Service Handbook , Installation Instructions & Owner's Manual
On-Demand Water Heater
Installation Manual and Owner's Guide
T-H3-DV model /
540H only
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 AND
MULTI-UNIT SYSTEM
T-H3-DV model / 540H only
ANSI Z21.10.3 and CSA 4.3
WARNING
- Do not store or use gasoline or other
- WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electric switch, do not
• Immediately call your gas supplier from
TM
• If you cannot reach your gas supplier, call
- Installation and service must be performed
Models
T-H3J-DV / 240H
T-H3S-DV / 340H
T-H3-DV / 540H
If the information in these
instructions is not followed
exactly, a fire or explosion may
result causing property damage,
personal injury or death.
flammable vapors and liquids in the vicinity
of this or any other appliance.
use any phone in your building.
a neighbor's phone. Follow the gas
supplier's instructions.
the fire department.
by a qualified installer, service agency or the
gas supplier.
If you have any questions, please
call 1-888-479-8324

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Summary of Contents for Takagi T-H3J-DV

  • Page 1 On-Demand Water Heater Installation Manual and Owner’s Guide ANSI Z21.10.3 and CSA 4.3 Models T-H3J-DV / 240H T-H3S-DV / 340H T-H3-DV / 540H T-H3-DV model / 540H only If the information in these instructions is not followed exactly, a fire or explosion may...

  • Page 2: Table Of Contents

    Contents CONTENTS Installation Manual 　SPECIFICATIONS .......................... 4 　INTRODUCTION .......................... 5 　SAFETY GUIDELINES ........................6 　INSTALLATION ..........................7 　　General.............................7 　　Clearances..........................9 　　Included Accessories.......................9 　　Optional Items........................9 　　Warning for Installations......................11 　　High-altitude Installations......................12 　　Venting Instructions.......................13 　　Gas supply and gas pipe sizing....................20 　　Water Connections........................22 　　Condensate drain........................23 　　Electrical Connections......................25 　　Easy-link System........................26 　　Multi-unit System........................30...

  • Page 3: Installation Manual

    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 future reference. If you lose the manual, contact the manufacturer or your local distributor. When you call, please tell us the model number and the serial number of your unit written on the rating plate of the water heater.

  • Page 4: Specifications

    Installation Manual Specifications SPECIFICATIONS Model T-H3J-DV / 240H T-H3S-DV / 340H T-H3-DV / 540H Natural Gas Input Min.: 15,000 Min.: 15,000 Min.: 15,000 BTU/h (Operating Range) Max.: 160,000 Max.: 180,000 Max.: 199,000 Propane Input Min.: 13,000 Min.: 13,000 Min.: 13,000 BTU/h (Operating Range) Max.: 160,000...

  • Page 5: Introduction

    • These high-efficiency models have a built-in secondary heat exchanger that absorbs latent heat from the exhaust gas. • The T-H3J-DV / 240H, T-H3S-DV / 340H and T-H3-DV / 540H models are only to be installed indoors. • The principle behind tankless water heaters is simple:...

  • Page 6: Safety Guidelines

    Installation Manual Safety Guidelines SAFETY GUIDELINES SAFETY DEFINITION Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. DANGER Indicates an imminently hazardous situation which, if not avoided, could result in death or serious injury. WARNING Indicates an imminently hazardous situation which, if not avoided, could result in minor or moderate injury. CAUTION GENERAL 1. Follow all local codes, or in the absence of local codes, follow the most recent edition of CSA B149.1 Natural Gas, Propane Installation Code. 2. Properly ground the unit in accordance with all local codes or in the absence of local codes, with CSA standard C22.1 Canada Electrical Code Part 1. 3. Carefully plan where you intend to install the water heater. Please ensure: • Your water heater will have enough combustible air and proper ventilation. • Locate your heater where water leakage will not damage surrounding areas. (please refer to p. 8.) 4.

  • Page 7: Installation

    9. T-H3J-DV / 240H, T-H3S-DV / 340H, and T-H3-DV / 540H models are to be installed indoors only. These units are equipped with a thermistor and hi-limit switch for the exhaust gas, detecting excess temperatures within the flue and enabling the unit to safely stop operations if needed. These components are always monitoring exhaust gas conditions in order to prevent heat damage to PVC, CPVC or Polypropylene (Plastic) venting if PVC, CPVC or Polypropylene is used.
  • Page 8 Installation Manual Installation • Installation and service must be performed by a qualified installer (for example, a licensed plumber or gas fitter), otherwise the warranty will be void. WARNING • The installer (licensed professional) is responsible for the correct installation of the water heater and for compliance with all national, state/provincial, and local codes.

  • Page 9: Clearances

    CLEARANCES Maintain all clearances around Back Side the water heater. Front Side Bottom Model Bottom Front Back Sides T-H3J-DV / 240H 305 mm 305 mm 102 mm* 13 mm 51 mm T-H3S-DV / 340H (12 in.) (12 in.) (4 in.) (0.5 in.) (2 in.) T-H3-DV / 540H *610 mm (24 inches) recommended for maintenance.
  • Page 10 Installation Manual Installation 1. Temperature remote controller: 2. Backflow Preventer: TK-BF01 TM-RE40 The temperature remote controller has two The backflow preventer prevents the backflow functions. It allows the output temperature from of air through the exhaust vent. This helps the water heater to be adjusted within the range prevent harmful exhaust gases from entering of 38 °C to 85 °C, and it also works as a diagnostic the home, as well as helping to prevent the tool that will give a concise error code whenever unit from freezing in areas where cold air can...

  • Page 11: Warning For Installations

    Installation Manual Installation WARNING FOR INSTALLATIONS FOR YOUR SAFETY, READ BEFORE INSTALLATION: Do not install the heater where water, debris or Do not have the vent terminal pointing toward flammable vapors may get into the flue terminal. any opening into a building. Do not locate your This may cause damage to the heater and void the heater in a pit or location where gas and water warranty.

  • Page 12: High-Altitude Installations

    No. 4 : OFF No. 4 : OFF No. 4 : ON No. 4 : ON No. 4 : ON NOTE: The dark squares indicate the direction the DIPswitches should be set to. T-H3J-DV / 240H and T-H3S-DV / 340H T-H3-DV / 540H Computer board Computer board Lower bank of DIPswitches Bank of DIPswitches DO NOT adjust any DIPswitches on the upper bank for the T-H3-DV / 540H.

  • Page 13: Venting Instructions

    CAUTION applicable national and local codes. T-H3J-DV / 240H, T-H3S-DV / 340H, and T-H3-DV / 540H models must be vented in accordance with the section “Venting of Equipment" of the latest edition of CSA B149.1 Natural Gas and Propane Installation Code, as well as applicable local building codes. The use of venting materials approved for Category III/IV appliances is recommended whenever possible. However, these models may also be vented with plastic pipe materials such as PVC, CPVC, and Polypropylene. For details, please refer to the Exhaust Vent (Plastic vent) section from p. 14. Vent...
  • Page 14 Installation Manual Installation -DIPswitch settings for Vent length- Set DIPswitches shown in the table below depending on the vent length. 76 mm (3") venting T-H3J-DV / 240H T-H3-DV / 540H Vent length T-H3S-DV / 340H (Upper bank of DIPswitches) ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 1.5 to 6.1 m...
  • Page 15 Installation Manual Installation • The maximum length of exhaust vent piping must not exceed 21.3 m (70 ft.) for 76 mm (3”) venting, which depends on the elevation where the water heater is installed. 30.5 m (100 ft.) for 102 mm (4”) venting (deducting 1.5 m (5 ft.) for each elbow used in the venting system). Do not use more than 5 elbows. See the table below. • When the horizontal vent run exceeds 1.5 m (5 ft.), support the vent run at 0.9 m (3 ft.) intervals with overhead hangers. Diameter Max. No. of Elbows Max. Vertical and Horizontal (Total) Vent Length 76 mm (3 in.) 21.3 m (70 ft.) 102 mm (4 in.)
  • Page 16 • These models are a Category IV appliance and must be vented accordingly with any 4” vent approved for use with Category III/IV or Special BH type gas vent. • The manufacturer recommends the “T-Vent” line manufactured by TAKAGI. (Refer to Takagi’s “T-Vent” brochure for details.) However, the following are also UL listed manufacturers: ProTech Systems Inc. (FasNSeal), Flex-L Inc., Z-Flex Inc. (Z-Vent III), Metal-Fab Inc., and Heat-Fab Inc. (Saf-T Vent).
  • Page 17 Installation Manual Installation Diameter Max. No. of Elbows Max. Vertical and Horizontal (Total) Vent Length 102 mm (4 in.) 30.5 m (100 ft.) *For each elbow added, deduct 1.5 m (5 ft.) from max. vent length. No. of Elbows Max. Vertical or Horizontal Vent Length 30.5 m (100 ft.) 29.0 m (95 ft.) 27.4 m (90 ft.) 22.9 m (75 ft.)

  • Page 18: Vent Termination Clearances

    Installation Manual Installation -Vent termination clearances- INSIDE CORNER DETAIL Vent terminal Air supply inlet Area where is not permitted Gas meter / regulator Canada U.S.A Direct vent and other Direct Other than than Direct Vent vent Direct Vent Clearance above grade, veranda, porch, deck, or 1 foot 1 foot 1 foot balcony...
  • Page 19 Installation Manual Installation -For sidewall terminations- For multiple sidewall exhaust terminations (e.g. multi-unit 610 mm systems), an exhaust termination must be at least 305mm 305 mm (2 ft.) (1 ft.) (1 ft.) away from another exhaust termination. An exhaust termination must also be at least 610 mm (2 ft.) away from an inside corner. (if the adjacent wall is less than 610 305 mm mm (2 ft.) of length, the minimum required distance away (1 ft.) from the inside corner will be equal to the length of that adjacent wall.) Exhaust Inside termination corner For multiple-unit, direct-vent sidewall terminations that 610 mm combine the intake and exhaust into a single penetration, (2 ft.)

  • Page 20: Gas Supply And Gas Pipe Sizing

    Installation Manual Installation GAS SUPPLY AND GAS PIPE SIZING -General- • 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 accidents.
  • Page 21 Maximum delivery Capacity of Cubic Feet of Gas per Hour of IPS Pipe carrying Natural Gas with 0.60 Specific Gravity Based on Pressure Drop of 0.5" W.C. Based on Energy Content of 1,000 BTU/Cubic ft.: The water heater requires 160 Cubic ft./hr for the T-H3J-DV / 240H, 180 Cubic ft./hr for the T-H3S-DV / 340H, and 199 Cubic ft./hr for the T-H3-DV / 540H. Unit: Cubic Feet per Hour...

  • Page 22: Water Connections

    Installation Manual Installation -Measuring inlet gas pressure- 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 to the off position. The water heater cannot perform properly without sufficient inlet gas pressure. Below are instructions on how to check the inlet gas pressure. THIS IS ONLY TO BE DONE BY A LICENSED PROFESSIONAL. 1. Shut off the manual gas valve on the gas supply line. 2. Remove the screw for the pressure port located on the gas inlet of the water heater shown in the diagram on the right. 3. Connect the manometer to the pressure port. 4.

  • Page 23: Pressure Relief Valve

    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. • The pressure relief valve must conform to CAN 1-4.4 and installation must follow local codes. • The discharge capacity must be at least 160,000 BTU/h for the T-H3J-DV / 240H, 180,000 BTU/h for the T-H3S -DV / 340H, and 199,000 BTU/h for the T-H3-DV / 540H. • The pressure relief valve needs to be rated for a maximum of 1 MPa (150 psi). • The discharge piping for the pressure relief valve must be directed so that the hot water cannot splash on anyone or on nearby equipment.
  • Page 24 Installation Manual Installation -Condensate Drain Connections- Discharge condensate (acidic water) in accordance with all local codes and common safety practices. WARNING The water heater is a high efficiency condensing water heater that produces condensate (acidic water). The acidic condensate generated in the secondary heat exchanger can be neutralized by the Neutralizer accessory. Case A: If a neutralizer is not required 1. Connect a 1/2” FPT X 3/8” (or 1/2”) HB Adaptor to the condensate drain port at the bottom of the water heater.

  • Page 25: Electrical Connections

    Installation Manual Installation • The condensate drain is at atmospheric pressure (non-pressurized) and therefore must be allowed to drain freely with gravity only. Please ensure that there are no blockages along the condensate drain tube. All portions of the WARNING condensate drain (neutralizer and drain tube) must be at a lower elevation than the water heater to prevent condensate water from building up inside the heat exchanger.

  • Page 26: Easy-Link System

    Installation Manual Installation EASY-LINK SYSTEM (Available on the T-H3-DV / 540H Indoor only) -General- The T-H3-DV / 540H water heaters can be connected with allowable heaters (see the table below) with communication cables to work as a multiple-unit manifold system. • The Easy-Link system allows up to 4 units to manifold together. • A communication cable (gray color) comes with each T-H3-DV / 540H model. You can manifold from 2 to 4 units without the need for a multi-unit controller. A 4-unit system has full automatic modulation between 13,000 BTU/h (Propane) or 15,000 BTU/h (Natural gas) to 796,000 BTU/h. Easy-Link connection with allowable heaters T-H2-DV / 520H T-H3-DV / 540H Gas In Hot Out Cold In • The Easy-Link system is limited up to 4 units.
  • Page 27 Installation Manual Installation 2. Select one unit to be the “PARENT” unit. 3. “PARENT” unit : Locate the two banks of DIPswitches at the bottom left of the computer board of the unit that you select to be the “PARENT” unit. Change DIPswitch No. 1 on the lower bank of DIPswitches to the ON position. See the computer board diagram below. Do not change any DIPswitches on any of the “CHILD” units. 4. Between the “PARENT” and the “CHILD-1” units : Connect the “PARENT” connector of the “PARENT” unit to the “1” connector of the “CHILD-1” unit. 5. Between the “CHILD-1”...
  • Page 28 Installation Manual Installation Either a temperature controller or a remote controller is required for the Easy- NOTICE Link system for ease of usage and maintenance. (C) Examples of incorrect settings and /or connections CASE 1: Wrong DIPswitch setting on the "PARENT" unit • Unless you change DIPswitch No. 1 PARENT unit CHILD-1 unit...
  • Page 29 Installati on Manual Installati on CASE 3: Wrong connections between the "CHILD-1" unit and the "CHILD-2" unit • 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. PARENT unit CHILD-1 unit CHILD-2 unit...

  • Page 30: Multi-Unit System

    Installation Manual Installation MULTI-UNIT SYSTEM Multiple T-H3-DV / 540H units can be combined for a multi-unit system, along with the multi-unit controller (TM-MC02). The multi-unit controller can control 2 to 20 units. For a 20 unit system, the computer can modulate between the usages of 13,000 BTU/h (Propane) or 15,000 BTU/h (Natural gas) to 4.0 Million BTU/h. TM-MC02 T-H3-DV / 540H Hot Out Cold IN An individual cut-off switch is recommended for each unit in a multi-unit system for the purpose of maintenance. Multi-unit system connection diagram Multi-unit controller with the remote controller wiring: Remote controller Unit 1 Unit 2 Unit 3 TM-MC02...

  • Page 31: Applications

    Installation Manual Installation APPLICATIONS -Space-Heating Applications- • In order to purge air in water pipes within a closed-loop system, an air vent and air separator should be installed in the system. Required circulation flow rates are labeled next to each application diagram. These flow rate WARNING requirements must be followed.

  • Page 32: Initial Operation

    Installation Manual Installation 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 to force it; call a qualified service technician.

  • Page 33: Owner's Guide

    Owner's Guide 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 lose the manual, contact the manufacturer or your local distributor. When you call, please tell us the model number and the serial number of your unit written on the rating plate of the water heater.

  • Page 34: Operating Safety

    Owner's Guide 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. B. BEFORE OPERATING smell all around the water heater area for evidence of leaking gas. Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor. WHAT TO DO IF YOU SMELL GAS. • Do not try to light any appliance.
  • Page 35 Owner's Guide Operating Safety 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. Far away from heater 1.

  • Page 36: Normal Operation

    Owner's Guide Normal Operation NORMAL OPERATION TEMPERATURE CONTROLLER and REMOTE CONTROLLER The illustration below shows an example of the controllers. The exact display may differ from examples. Temperature controller Remote controller Display for Temperature "INFO" Button When the STAND BY LED is ON, the hot water temperature will be Each time the button is pressed, displayed. the operation mode is selected in the sequence of the following. Inlet water Outlet water Water temperature temperature flow IN USE LED (Green)

  • Page 37: Temperature Settings

    "HOT" and "INFO" buttons for at least 3 seconds. It shows the 63 °C on its display. The display will be blinking for 10 seconds and set. TEMPERATURE TABLE OF CONTROLLER a) For T-H3J-DV / 240H and T-H3S-DV / 340H °C °F 100 105 110 115 120* 125 130 135 140 b) For T-H3-DV / 540H °C...

  • Page 38: Additional Features

    Owner's Guide Normal Operation ADDITIONAL FEATURES -Information mode- You can get some information about the water heater condition by pressing the "INFO" button. For more information follow the procedures below: Screen on the controller Operation Temperature controller Remote controller Inlet water temperature First of all, inlet water temperature will be displayed on the controller by pressing the "INFO" button. (EX.: 16 °C) Outlet water temperature Outlet water temperature will be displayed on the controller by pressing the "INFO"...

  • Page 39: Temperature Settings On The Pcb (Without Remote Controller)

    There are 2 preset temperatures (49 °C (120 °F) and 60 °C (140 °F)) that you can select from by changing the DIPswitch settings on the computer board without the remote controller. See the table below. When the remote controller is in normal operation, the set temperature of the remote controller is given priority over the set temperature of the DIPswitch settings. • The temperature has been preset at the factory to 49 °C (120 °F). T-H3J-DV / 240H and T-H3S-DV /340H Computer board 49 °C (120 °F) 60 °C (140 °F) DEFAULT...

  • Page 40: Flow

    • The freeze protection system will activate when the surrounding and/or outside temperatures drop below 2.5 °C (36.5 °F). • For the T-H3J-DV / 240H , T-H3S-DV / 340H and T-H3-DV / 540H models: • In any areas subject to freezing temperatures, the manufacturer highly recommends an indoor installation with an indoor model. In such an installation, freezing issues can only occur if cold...

  • Page 41: Maintenance And Service

    Owner's Guide Normal Operation MAINTENANCE AND SERVICE Turn off the electrical power supply and close the manual gas shutoff valve and the manual water control valve before servicing. WARNING • Clean the cold-water inlet filter. (Refer to diagram below.) • 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 or damage. • The burner should be checked annually for dust, lint, grease or dirt. • Keep the area around the water heater clear. Remove any combustible materials, gasoline or any flammable vapors and liquids.

  • Page 42: Troubleshooting

    Owner's Guide Troubleshooting TROUBLESHOOTING GENERAL PROBLEM SOLUTIONS It takes long time to • The time it takes to deliver hot water from the water heater to your get hot water at the fixtures depends on the length of piping between the two. The longer the fixtures. distance or the bigger the pipes, the longer it will take to get hot water. • If you would like to receive hot water to your fixtures quicker, you may want to consider a hot water recirculation system. (p. 31) The water is not hot • Compare the flow and temperature. See the charts on p. 54. enough. • Check cross plumbing between cold water lines and hot water lines. • Is the gas supply valve fully open? (p. 32) • Is the gas line sized properly? (p. 21) • Is the gas supply pressure sufficient? (p. 22)
  • Page 43 Owner's Guide Troubleshooti ng PROBLEM SOLUTIONS Unit does not ignite • Is the flow rate over 1.9 L/min (0.5 GPM)? (p. 36) when water goes • Check for the filter on cold water inlet. (p. 41) through the unit. • Check for reverse connection and cross connection. • If you use the remote controller and/or temperature controller, is the power button turned on? • Check if the inlet temperature is too high. The fan motor is • This is normal.

  • Page 44: Error Codes

    • If there is a problem with the installation or the unit, the error code will be displayed on the temperature controller and remote controller. • Consult with the table on the following pages for the description of each error code. Error code indicator on T-H3J-DV / 240H and T-H3-DV / 540H the temperature controller T-H3S-DV / 340H...
  • Page 45 708, 709, 710, 712), burn marks on the computer board (Part #701), and/or soot on the flame rod (Part #108). • Check if there is leaking from heat exchanger. (Part #401) Two Times Outlet thermistor failure (T-H3J-DV / 240H and T-H3S-DV / 340H only) Heat exchanger thermistor failure (T-H3-DV / 540H • Check for connection/breakage of wires and/or only) debris on thermistor. (Part #407, 408, 411, 715)
  • Page 46 Owner's Guide Troubleshooting Green Malfunction Remote Diagnosis description Two Times Air-fuel ratio rod • Check for connection/breakage of wires (Part #709) failure and/or soot on the AFR rod. (Part #108) Two Times Flow sensor failure • Check for connection/breakage of wires and/or debris on the flow sensor impeller. (Part #402) (Easy-Link System only) Six Times Abnormal main gas • Check for connection/breakage of wires (Part #708) solenoid valve and/or burn marks on the computer board (Part #701).

  • Page 47: Components Diagram

    Owner's Guide Components Diagram COMPONENTS DIAGRAM Case assembly Temperature Temperature controller remote controller Page...
  • Page 48 Owner's Guide Components Diagram Computer board assembly T-H3J-DV / 240H and T-H3S-DV / 340H T-H3-DV / 540H 707 722 Surge box assembly Page...
  • Page 49 Owner's Guide Components Diagram Burner assembly Burner assembly 109 111 Manifold Assembly T-H3-DV / 540H Page...
  • Page 50 Owner's Guide Components Diagram Water Way assembly T-H3-DV / 540H T-H3J-DV / 240H and T-H3S-DV /340H Bypass section (T-H3-DV / 540H) Water outlet section Water inlet section Page...

  • Page 51: Parts List

    Owner's Guide Parts List PARTS LIST Item # Description Part # Case assembly for Indoor models EK159 Front cover for T-H3J-DV / 240H and T-H3S-DV / 340H EK187 for T-H3-DV / 540H EK158 Intake air port assembly EK170 Bracket EK162...
  • Page 52 Gas inlet ring EX00D Igniter plate EK194 Surge box plate EK163 O-ring P18 NBR (Black) EZP18 O-ring P20 NBR (Black) EK042 Heat exchanger assembly for T-H3J-DV / 240H and T-H3S-DV / 340H EK252 Heat exchanger assembly for T-H3-DV / 540H EK250 Flow adjustment valve / Flow sensor EK129 Bypass valve for T-H3-DV / 540H EKD58 Water inlet EKK1U...
  • Page 53 Part # Fastener “16-25A” EKK39 Fastener “6-15” EX12K Flat heater EK217 Drain tube EK218 Cold pipe for T-H3J-DV / 240H and T-H3S-DV / 340H EK219 for T-H3-DV / 540H EK220 Stainless heat exchanger out pipe EK222 Header connection EK226 Drain port EK228...

  • Page 54: Output Temperature Chart

    Output Temperature Chart OUTPUT TEMPERATURE CHART Chart is based on properly sized gas line T-H3J-DV / 240H Output Temperature vs. GPM (Max. 6.6 GPM) with Various Inlet Water Temperature T-H3S-DV / 340H Output Temperature vs. GPM (Max. 8.0 GPM) with Various Inlet Water Temperature T-H3-DV / 540H Output Temperature vs.

  • Page 55: Limited Warranty

    Aquastat Control Multi-Family Domestic Hot Pump Control w/ Standard Water Recirculation Timer Only No Pump Control (24 hr.) Heating All Types Warranty for models: T-H3J-DV / 240H and T-H3S-DV / 340H [Unit: Year] Application Parts Labor No Recirculation On-Demand Recirculation Single Family Aquastat Control Domestic Hot Pump Control w/ Standard...
  • Page 56 Owner's Guide Warranty     (3) Limited Labor Coverage • The manufacturer will provide for reasonable labor charges associated with warranty repairs or replacements within one (1) year from the date of purchase. The manufacturer will only pay directly to the service provider. • Warranty service must be performed by an authorized Service Representative. A list of authorized Service Representatives is available upon request. • All warranty claims and warranty service must be authorized and approved by the manufacturer.     (4) Includes dual-purpose applications (combination heating and domestic). 3. Repair, Replacement or Refund: The manufacturer or its authorized Service Representative will, at its sole discretion, repair or replace any failed or defective mechanical or electrical parts, or components thereof, or, if the manufacturer or its authorized Service Representative cannot replace said parts, and repair is not commercially practicable, the manufacturer or its authorized Service Representative will refund the purchase price. The manufacturer or its authorized Service Representative may, at its sole discretion, use new, refurbished or reconditioned parts. 4. Limitation on Duration of Implied Warranties: ANY IMPLIED WARRANTIES ARISING UNDER STATE LAW, INCLUDING THE IMPLIED WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE AND MERCHANTABILITY, SHALL IN NO EVENT EXTEND PAST THE EXPIRATION OF ANY WARRANTY PERIOD HEREUNDER.
  • Page 57 NOTES Page...
  • Page 58 NOTES Page...
  • Page 59 NOTES Page...
  • Page 60 If you have any questions, please call 1-888-479-8324 Page...

This manual is also suitable for:

T-h3-dvT-h3s-dvT-h3j-dv/240hT-h3s-dv/340hT-h3-dv/540h

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