Takagi 200 Series Installation Manual And Owner's Manual

Takagi 200 Series Installation Manual And Owner's Manual

On-demand water heater

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On-Demand Water Heater
Installation Manual and Owner's Guide
ANSI Z21.10.3 ・ CSA 4.3
Gas Tankless Water Heater
Suitable for combination 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
• Complies with SCAQMD Rule
1146.2 for NOx emissions require-
ment of 14 ng/J or 20 ppm
• FIELD GAS CONVERTIBLE
• EASY-LINK SYSTEM AND MULTI-
UNIT SYSTEM
(510U only)
Keep this manual near the water heater for future reference whenever maintenance, adjustment, or
service is required.
510U only
Models
110U Indoor
310U Indoor
510U Indoor
Series 200
WARNING
- 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
TM
• Do not try to light any appliance.
• Do not touch any electric switch, do not
• Immediately call your gas supplier from
• If you cannot reach your gas supplier, call
- Installation and service must be performed
by a qualified installer, service agency or the
gas supplier.
110U Outdoor
310U Outdoor
510U Outdoor
If the information in these
instructions is not followed
exactly, a fire or explosion may
result causing property damage,
personal injury or death.
use any phone in your building.
a neighbor's phone. Follow the gas
supplier's instructions.
the fire department.
If you have any questions, please
call or write to:
500 Tennessee Waltz Parkway
Ashland City, TN 37015
Toll Free: 1-877-737-2840

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Summary of Contents for Takagi 200 Series

  • Page 1 On-Demand Water Heater Installation Manual and Owner’s Guide 510U only ANSI Z21.10.3 ・ CSA 4.3 Models 110U Outdoor • 110U Indoor • 310U Outdoor • 310U Indoor • 510U Outdoor • 510U Indoor • Series 200 If the information in these instructions is not followed exactly, a fire or explosion may result causing property damage,...
  • Page 2: Table Of Contents

    Contents CONTENTS Owner's Guide Installation Manual OPERATING SAFETY ........39 SPECIFICATIONS ..........4 INTRODUCTION ..........5 NORMAL OPERATION ........41 SAFETY GUIDELINES........6 BUILT-IN CONTROLLER SAFETY DEFINITION ........6 AND REMOTE CONTROLLER ....41 GENERAL ............6 GENERAL ............41 INSTALLATION ..........7 TEMPERATURE SETTINGS ......42 GENERAL ............7 TEMPERATURE SETTINGS ON THE PCB ..44 CLEARANCES ..........9 FLOW ............
  • 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 installation manual carefully. Keep this manual for future reference. If you need an additional manual, contact the manufacturer or your local distributor.
  • Page 4: Specifications

    Installation Manual Specifications SPECIFICATIONS 110U 110U 310U 310U 510U 510U Model Indoor Outdoor Indoor Outdoor Indoor Outdoor Natural Gas Input Min.: 15,000 Min.: 15,000 Min.: 15,000 BTU/h (Operating Range) Max.: 140,000 Max.: 190,000 Max.: 199,000 Gas Connection 3/4" NPT Water Connections 3/4"...
  • Page 5: Introduction

    Installation Manual Introduction 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 (Indoor models) or the front cover (Outdoor models) of the water heater. •...
  • 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 seri- ous injury.
  • Page 7: Installation

    Installation Manual Installation INSTALLATION GENERAL 1. Follow all local codes, or in the absence of local codes, follow the current edition of the National Fuel Gas Code: ANSI Z223.1/NFPA 54 in the USA or B149.1 Natural Gas and Propane Installation Code in Canada.
  • 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. • The installer (licensed professional) is responsible for the correct installation of WARNING the water heater and for compliance with all national, state / provincial, and local codes.
  • Page 9: Clearances

    Installation Manual Installation CLEARANCES Back Side Maintain all clearances around the water heater. Failure to do so could create a fire Front Side hazard, potentially leading to death, serious WARNING injury, and/or property damage. Bottom Model Bottom Front Back Sides 110U Indoor* 12 in.
  • Page 10 Installation Manual Installation 1. 4” Backflow preventer and Female-female adaptor It prevents the backflow of air through the exhaust vent. This helps prevent harmful exhaust gases from entering the home, as well as helping to prevent the unit from freezing in areas where cold air can be blown or drawn into the exhaust system.
  • 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 water heater in a pit or location where gas and warranty.
  • Page 12: High-Altitude Installations

    Installation Manual Installation HIGH-ALTITUDE INSTALLATIONS Check the elevation where your water heater is installed. Set your DIP switches according to altitude as shown below. • Adjust the appropriate DIP switches according to model and elevation as shown below. DO NOT adjust the other DIP switches. • Turn off the power supply to the water heater before changing the DIP switch settings.
  • Page 13: Venting Instructions

    Installation Manual Installation VENTING INSTRUCTIONS For indoor models -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 asphyxiation, severe injury or death from carbon monoxide and flue gases poisoning.
  • Page 14 • A condensate collector is required for horizontal and/or vertical vent runs exceeding 5 ft of equivalent length (not including sidewall terminatons). • A backflow preventor should be installed in the exhaust when the heater is installed in climates subject to freezing temperatures. General rules for vent terminations: •...
  • Page 15: Combustion Air Supply

    -Combustion Air Supply- • This gas water heater requires an adequate source of clean air for combustion and ventilation. Without sufficient air, your water heater may not operate properly and may emit excessive and abnormal amounts of carbon monoxide WARNING which may result in carbon monoxide poisoning or death.
  • Page 16 Calculate the air volume of the room Air requirements depend on the size of the room. Room Volume (ft ) = Floor Area (ft ) X Ceiling Height (ft) If there are large objects in the room (e.g., refrigerator, furnace, car), subtract their volume from the vol- ume of the room to get a better estimate of the air available.
  • Page 17 Calculate minimum size of vent openings and ducts The vent cross-sectional area needed to provide the free area depends on the covering on the vent openings. Typical vents use louvers or grilles to protect the opening. The louver or grill itself blocks some of the free area, so the open- ing may need to be larger to meet the minimum free area requirements.
  • Page 18 Combustion Air Supply Options Gable vent to outdoors Install above insulation 12” maximum Outlet air to Confined attic 1 in Space 4,000 btu/h Two permanent Openings Confined Alternate 1 in Space Inlet air from Air Inlet the crawl space 4,000 btu/h 12” maximum 1 in Open foundation vent 4,000 btu/h...
  • Page 19: Vent Length And No. Of Elbows

    Installation Manual Installation -Vent length and No. of Elbows- 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 350 °F (177 °C).
  • Page 20: Dip Switch Settings For Vent Length

    -DIP Switch Settings for Vent Length- • 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 asphyxiation, severe injury or death from carbon monoxide and flue gases poisoning. Improper WARNING installation will void product warranty.
  • Page 21 Installation Manual Installation Two-Pipe, Direct-Vent Installation Examples DIP switch settings for direct vent installation 110U Indoor 510U Indoor Vent length 310U Indoor (Upper bank of DIP switches) No. 3 : O N No. 6 : O N ON 1 2 3 4 5 6 7 8 ON 1 2 3 4 5 6 7 8 9 10 0 to 20 ft No.
  • Page 22 Installation Manual Installation Horizontal Installation with the 100187154 vent kit For the Direct vent kit of 100187154, set the following DIP switch settings. 110U Indoor 510U Indoor Vent length 310U Indoor (Upper bank of DIP switches) No. 6 : O N No.
  • Page 23: Clearances For Sidewall Terminations

    Installation Manual Installation -Clearances for sidewall terminations- Improper installation can result in carbon monoxide poisoning or death. Follow all local and national codes in regards to proper termination clearances. In the absence of such codes, the clearances below must be met. Local codes supersede these clearances. WARNING Failure to observe this warning may result in severe personal injury or death.
  • Page 24: Clearances For Rooftop Terminations

    Installation Manual Installation -Clearances for rooftop terminations- Improper installation can result in carbon monoxide poisoning or death. Follow all local and national codes in regards to proper termination clearances. In the absence of such codes, the clearances below must be met. Local codes supersede these clearances. WARNING Failure to observe this warning may result in severe personal injury or death.
  • Page 25: Vent Termination Clearances

    Installation Manual Installation -Vent termination clearances- Inside corner = Vent terminal detail = Air supply inlet = Area where the terminal is not permitted Fixed Operable Fixed closed closed Operable Regulator/Gas meter vent outlet Canada Installations US Installations Direct vent and other than Direct Other than direct vent...
  • Page 26: Gas Supply And Gas Pipe Sizing

    Installation Manual Installation GAS SUPPLY AND GAS PIPE SIZING -General- • Do not use this water heater with any gas other than the one listed on the rating plate unless the water heater has been properly converted. • Ensure that any and all gas regulators used are operating properly and providing gas pressures within the specified range shown below.
  • Page 27: Natural Gas Supply Piping

    Installation Manual Installation -Natural Gas Supply Piping- Maximum delivery Capacity in Cubic Feet of Gas per Hour (based on IPS Pipe carrying Natural Gas with 0.60 Specific Gravity with a Pressure Drop of 0.5" W.C.). Based on Energy Content of 1,000 BTU/Cubic ft: The water heater requires 140 Cubic ft/hr for the 110U, 190 Cubic ft /hr for 310U, and 199 Cubic ft/hr for the 510U model.
  • Page 28: Water Connections

    Installation Manual Installation WATER CONNECTIONS Do not use this appliance if any part has been under water. Immediately contact a qualified installer or service agency to replace a flooded water heater. Do not attempt to repair the unit! It must be replaced! WARNING Do not reverse the hot outlet and cold inlet connections to the water heater.
  • Page 29: Electrical Connections

    Installation Manual Installation ELECTRICAL CONNECTIONS • Ensure that circuit power is turned OFF before you complete the following steps. • Follow the electrical code requirements of the local authority having jurisdiction. In the absence of such requirements, follow the current edition of the National Electrical Code ANSI/NFPA 70 in the U.S.
  • Page 30: Temperature Remote Controller

    Installation Manual Installation TEMPERATURE REMOTE CONTROLLER -Included accessories-Outdoor models only The remote control is an optional accessory that can be installed in a hall, closet, etc., to allow for • temperature adjustment without having to go to the heater. When installed, the remote will take priority over the built-in controller of indoor models. •...
  • Page 31 Installation Manual Installation 4. Tighten the two "Fork terminals" beneath the two "Remote controller terminal" screws on the back of the main body. (Fig. D-1) 5. Cut out the inlet for the remote controller cable Fig. D-1 from the bottom of the main body. (Fig. D-2) 6.
  • Page 32: Easy-Link System

    510 model 510U model (AT-D2U-IN/OS)* Cold In 510U model (AT-D3U-IN/OS)* 200 series • *If the 510U (AT-D2U-IN/OS) models and the 510U (AT-D3U-IN/OS) models are incorporated in an Easy-Link Sytem with the other models in the table above, NOTICE change DIP switch No. 6 on the lower bank of all the 510U (AT-D2U-IN/OS) and 510U (AT-D3U-IN/OS) computer boards to the “ON”...
  • Page 33 Installation Manual Installation 6. Between the “CHILD-1” and the “CHILD-2” units: Connect the “2” connector of the “CHILD-1” unit to the “1” connector of the “CHILD-2” unit. 7. Between the “CHILD-2” and the “CHILD-3” units: Connect the “2” connector of the “CHILD-2” unit to the “1” connector of the “CHILD-3” unit. 8.
  • Page 34: Multi-Unit System

    Installation Manual Installation MULTI-UNIT SYSTEM Multiple 510U models can be combined for a Multi-Unit System, along with the multi-unit controller (Part 100112691 (TM-MC02)). Each multi-unit controller can control from 2 to 20 units for commercial or residential applications. For a 20-unit system, the computer can modulate from 15,000 BTU/h to 3.98 million BTU/h.
  • Page 35: Applications

    Applications APPLICATIONS SPACE-HEATING APPLICATIONS • This water heater is suitable for combination water (potable) heating and space heating and not suitable for space heating applications only. • 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.
  • Page 36: Dual-Purpose Hot Water Heating

    Installation Manual Installation DUAL-PURPOSE HOT WATER HEATING (Domestic and Space Heating): Diagrammatic layout of radiant heating and domestic water heater. All water piping should be insulated in accordance with 780 CMR 3" intake and 4" vent (Massachusetts energy code) (Discharge must comply with local and Cold water supply state codes.) Cannot...
  • Page 37: Initial Operation

    Installation Manual Initial operation INITIAL OPERATION FOR YOUR SAFETY, READ BEFORE OPERATING • Check the GAS and WATER CONNECTIONS for leaks before firing the 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.
  • Page 38: 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 owner's guide carefully. Keep this manual for future reference. If you need an additional manual, contact the manufacturer or your local distributor.
  • Page 39: 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 appliance does not have a pilot. It is equipped with an ignition device which automatically lights the burner. Do not try to light the burner by hand. B. BEFORE OPERATING smell all around the appliance area for 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 40 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. Do not install water heater where flammable products will be stored or used unless the main burner is at least 18” above the floor. This will reduce, but not eliminate the risk of vapors being ignited by the main burner. Flammable Vapors FLAMMABLES Read and follow water heater warnings and instructions. If the owner’s manual is missing, contact the retailer or manufacturer. Keep flammable products: Vapors: 1. Far away from heater.
  • Page 41: Normal Operation

    Owner's Guide Normal Operation NORMAL OPERATION BUILT-IN CONTROLLER AND REMOTE CONTROLLER The illustration below shows an example of the controllers. The exact display may differ from examples. Built-in 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.
  • Page 42: Temperature Settings

    Owner's Guide Normal Operation TEMPERATURE SETTINGS -Set temperature- Screen on the controller Operation Built-in controller Remote controller Turn on the 120 VAC power supply to the unit (the water heater or the multi-unit controller). Press the "ON/OFF" button on the controller in order to turn the controller on.
  • Page 43 Owner's Guide Normal Operation -Additional features- Information mode You can get some information about the water heater's condition by pressing the "INFO" button. For more information, follow the procedures below: Screen on the controller INFO Operation Button Built-in controller Remote controller Inlet water temperature will be displayed on 1st.
  • Page 44: Temperature Settings On The Pcb

    Owner's Guide Normal Operation TEMPERATURE SETTINGS ON THE PCB WITHOUT CONTROLLER • Adjust the appropriate DIP switches according to model and temperature as shown below. DO NOT adjust the other DIP switches. • Turn off the power supply to the water heater before changing the DIP switch settings.
  • Page 45: Freeze Protection System

    Owner's Guide Normal Operation FREEZE PROTECTION SYSTEM • This unit comes equipped with heating blocks to protect it from damage associated with freezing. • For this freeze protection system to operate, there has to be electrical power to the unit. Damage to the heat exchanger caused by freezing temperatures due to power loss is not covered under the warranty.
  • Page 46: Measuring Inlet Gas Pressure

    Owner's Guide Normal Operation -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 to the OFF position. 3.
  • Page 47: Troubleshooting

    Owner's Guide 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 get hot water at the fixtures depends on the length of piping between the two. The longer fixtures.
  • Page 48 Owner's Guide Troubleshooting PROBLEM SOLUTIONS Unit does not ignite • Is the flow rate over 0.5 GPM (1.9 L/min)? (p. 41) when water goes • Check the filter on the cold water inlet. (p. 46) through the unit. • Check for reverse connection and cross connection. •...
  • Page 49: Error Codes

    Owner's Guide Troubleshooting ERROR CODES -General- • The units have self-diagnostic functions for safety and convenience when troubleshooting. • If there is a problem with the installation or the unit, the error code will be displayed on the built-in controller or remote controller. •...
  • Page 50 -For the 510U model in an Easy-Link System- Error codes will be displayed differently with units installed within an Easy-Link System, not only to show what the error code is, but to also indicate which unit within the system has the error code. Below is a sample of how the error code of "321"...
  • Page 51 Owner's Guide Troubleshooting -Fault Analysis of Error Codes- If the error code is displayed on the computer board of the water heater or the controller, please check the following. After checking, consult with the manufacturer. Green Malfunction Remote Diagnosis description One Flash Incorrect DIP switch •...
  • Page 52 Owner's Guide Troubleshooting Green Malfunction Remote Diagnosis description Six Flashes Abnormal main gas • Check for connection/breakage of wires (Part #708) and/ solenoid valve or burn marks on the computer board (Part #701). Six Flashes Abnormal gas • Check for connection/breakage of wires (Part #714) and/ solenoid valve or burn marks on the computer board (Part #701).
  • Page 53: Components Diagram

    Owner's Guide Components Diagram COMPONENTS DIAGRAM Case assembly Built-in temperature controller Page...
  • Page 54 Owner's Guide Components Diagram Computer board assembly 110U and 310U 510U Surge box assembly Page...
  • Page 55 Owner's Guide Components Diagram Burner assembly Burner assembly Manifold assembly 510U Exhaust section (Outdoor model) LP Conversion Kit Page...
  • Page 56 Owner's Guide Components Diagram Water Way assembly To Water inlet section Bypass section 510U To Water outlet section 110U 310U 459 454 To Water inlet section 510U To Water outlet section 510U Water outlet section Water inlet section Page...
  • Page 57: Parts List

    Owner's Guide Parts List PARTS LIST Part # AT-KJr3U-IN/OS, Item # Description 110U, 310U and AT-K5U-IN/OS and 510U models AT-D3U-IN/OS Case assembly for Indoor models EK596 for Outdoor models EK597 Front cover for Indoor models EK598 for Outdoor models EK599 Bracket EK455 Intake air port assembly...
  • Page 58 Owner's Guide Parts List Part # AT-KJr3U-IN/OS, Item # Description 110U, 310U and AT-K5U-IN/OS and 510U models AT-D3U-IN/OS Burner gasket 100224105 EK567 Burner holder gasket 100224106 EK568 Surge box plate 100074360 EK436 PCB fixing plate EK603 Thermostat 100074369 EKJ59 LP Conversion kit 100270585 EK604 Manifold gasket...
  • Page 59 Owner's Guide Parts List Part # AT-KJr3U-IN/OS, Item # Description 110U, 310U and AT-K5U-IN/OS and 510U models AT-D3U-IN/OS Computer board for 110U model 100270582 EK611 for 310U model 100270583 EK612 for 510U model 100270584 EK613 Remote fixing plate for 510U 100074644 EK152 Surge box...
  • Page 60: Output Temperature Chart

    Owner's Guide Output Temperature Chart OUTPUT TEMPERATURE CHART Chart is based on properly sized gas line 110U Output Temperature vs. GPM (Max. 6.6 GPM) with Various Inlet Water Temperature Set Temp. (°F) 310U Output Temperature vs. GPM (Max. 8.0 GPM) with Various Inlet Water Temperature Set Temp.

This manual is also suitable for:

110u310u510uGt15-110u-o

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