On-Demand Water Heater Installation Manual and Owner’s Guide ANSI Z21.10.3 • CSA 4.3 Model • 140 Indoor • 140 Outdoor If the information in these instructions is not followed exactly, a fire or explosion may result causing property damage, WARNING personal injury or death. - 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 • Do not try to light any appliance.
Installation Manual Contents CONTENTS Owner's Guide Installation Manual SPECIFICATIONS..............................................4 INTRODUCTION...........................................5 SAFETY GUIDELINES.....................................6 SAFETY DEFINITION.....................................6 GENERAL.......................................................6 INSTALLATION.................................................7 GENERAL.......................................................7 CLEARANCES....
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. When you call, please tell us the product name and the serial number of your unit written on the rating plate of the water heater.
Installation Manual Specifications SPECIFICATIONS Model 140 Indoor 140 Outdoor Natural Gas Input (Operating Range) BTU/h Min.: 15,000 Max.: 120,000 Propane Input (Operating Range) BTU/h Min.: 15,000 Max.: 120,000 Gas Connection 1/2" NPT Water Connection 3/4" NPT Natural gas Inlet Pressure Propane Inlet Pressure psi (MPa) inch W.C. (kPa) inch W.C. (kPa) Weight lbs. (kg) Water Pressure* 15 - 150 (0.1 - 1.0) Min. 4.0 (1.0) Max. 10.5 (2.6) Min. 8.0 (2.0) Max. 14.0 (3.5) 50 (22.
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/front panel of the water heater. • Please read all installation instructions completely before installing this product. • If you have any problems or questions regarding this equipment, consult the manufacturer or its local representative.
Installation Manual Safety Guidelines SAFETY GUIDELINES SAFETY DEFINITION DANGER WARNING CAUTION NOTICE Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. Indicates an imminently hazardous situation which, if not avoided, could result in death or serious injury. Indicates an imminently hazardous situation which, if not avoided, could result in minor or moderate injury. Indicates information considered important but not hazard related.
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, Propane Installation Code in Canada. 2. 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. 3. The manifold gas pressure is preset at the factory.
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 the water heater and for compliance with all national, state/provincial, and local codes. WARNING • The manufacturer does not recommend installing the water heater in a pit or location where gas and water can accumulate.
Installation Manual Installation CLEARANCES Top Maintain all clearances around the water heater. Failure to do so could create a fire hazard, potentially leading to death, serious WARNING injury, and/or property damage. Back Side Side Front Bottom Model Top Bottom Front Back Sides 140 Indoor 12 in. (305 mm) 12 in. (305 mm) 4 in.* (102 mm) 1 in. (25 mm) 3 in. (76 mm) 140 Outdoor 36 in. (914 mm) 12 in. (305 mm) 24 in. (610 mm) 1 in. (25 mm) 3 in.
Installation Manual Installation 1. Temperature remote controller: 100209924 (TM-RE42)-Standard model The temperature remote controllers have three functions. It allows the output temperature from the water heater to be adjusted. It also works as a diagnostic tool and provides a concise error code whenever there is a problem with the unit. See the Troubleshooting Section (pp.53 to 56) for information on possible error codes. 2.
Installation Manual Installation WARNING FOR INSTALLATIONS FOR YOUR SAFETY, READ BEFORE INSTALLATION: 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 in a pit or location where gas and water can accumulate.
Installation Manual Installation HIGH-ALTITUDE INSTALLATIONS • 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. Failure to observe these warnings could lead to carbon monoxide poisoning or death. • WARNING • Check the elevation where your water heater is installed. Set DIP switches shown in the table below depending on the altitude.
Installation Manual Installation VENTING INSTRUCTIONS Indoor 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 asphyxiation, severe injury or death from carbon monoxide and flue gases poisoning. Improper installation will void WARNING product warranty. • When installing the vent system, all applicable national and local codes must be followed.
Installation Manual Installation -Combustion air supplyThis 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 which may result in WARNING carbon monoxide poisoning or death. • The guidelines in this section apply to installations within the United States. All U.S. installations must conform to the National Fuel Gas Code, ANSI Z223.
Installation Manual Installation Your water heater’s BTU/h rating is on the rating plate. The BTU/h ratings should be on the other appliances’ rating plates. If you have trouble determining the BTU/h ratings, contact the manufacturer or have a qualified person determine the ventilation requirements. NOTICE: If you are replacing your old water heater with one that has a higher BTU/h rating, the amount of ventilation required may be greater.
Installation Manual Installation Determine type of ventilation There are several types of ventilation that can be used. The various options are listed below. See also the illustrations on the next page. 1. 2. 3. 4. 5. Direct to outdoors Vertical ducts Horizontal ducts Single opening (not recommended; must be at least 100 in2 (6.5 cm2) . Not appropriate for confined spaces smaller than 50 ft3 (1.42 m3) per 1,000 BTU/h or when getting air from another room.
Installation Manual Installation Combustion air supply options Gable vent to outdoors Install above insulation 12” (305 mm) maximum Outlet air to attic 1 in2 (6.5 cm2) per 4,000 btu/h Confined Space Two permanent Openings Alternate Air Inlet 1 in2 (6.5 cm2) per 4,000 btu/h Inlet air from the crawl space 1 in2 (6.
Installation Manual Installation -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 venting must be certified to ULC S636 standards.
Installation Manual Installation -DIP switch settings for vent length- Typical installations using PVC, CPVC, ABS, or polypropylene vent • • WARNING • Adjust the appropriate DIP switches according to vent size and vent length 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. Failure to observe these warnings could lead to carbon monoxide poisoning or death.
Installation Manual Installation • • WARNING • Adjust the appropriate DIP switches according to vent size and vent length 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. Failure to observe these warnings could lead to carbon monoxide poisoning or death. 3 inch vent installation Vent length Vent length Direct vent ON 1 2 3 4 5 6 7 8 9 10 5 to 20 ft (1.5 to 6.
Installation Manual Installation Vertical installation Direct vent Single vent with room-air intake Roof Roof Roof flashing Roof flashing Fire stop Fire stop 3 inch vent installation 3" straight pipe 3" coupling (included) Vent connections for direct vent 3" straight pipe 3" coupling (included) Exhaust vent collar (Female) Intake vent collar (Female) 1. Connect 3" couplings directly on the exhaust and intake vent collar of the water heater.
Installation Manual Installation CENTROTHERM PP VENTING (Polypropylene) WARNING! Do not mix parts or fittings of different material types, and do not mix pipe, fittings, or joining methods from different manufacturers. Combustion exhaust can contain carbon monoxide and must be properly vented outside. Breathing abnormal amounts of carbon monoxide can result in serious injury or death.
Installation Manual Installation -DIP switch settings for vent length- Typical installations using stainless steel vents • Adjust the appropriate DIP switches according to size and vent length 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. WARNING • Failure to observe these warnings could lead to carbon monoxide poisoning or death.
Installation Manual Installation • See pp. 25 to 27 regarding clearances from the exhaust terminal to the air inlet or opening. • Follow all vent system manufacturer’s instructions and all local codes. • Use 4" (102 mm) Category III/IV approved or Special BH, single or double wall stainless steel vent pipe. WARNING • Do not mix parts or fittings of different material types, and do not mix pipe, fittings, or joining methods from different manufacturers.
Installation Manual Installation -Vent termination clearancesInside corner detail V = Vent terminal X = Air supply inlet G = Area where the terminal is not permitted V D H A V L E V B B C Fixed closed Operable V F V B Operable Fixed closed V B X V B V M I J A X V K Regulator/Gas meter vent outlet B Canada Installations1 US Installations2 Direct vent and other than Direct vent Other than direct vent direct vent A Clearance above grade, veranda, porch, deck, or balcony 1 ft (30 cm)
Installation Manual Installation -Clearances for sidewall terminationsImproper 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 can be used as guidelines. Local codes supersede these WARNING guidelines. Exhaust Termination 2 ft (610 mm) min. 1 ft (305 mm) min. 1 ft (305 mm) min.
Installation Manual Installation -Clearances for rooftop terminationsFollow 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. Canadian requirements differ from the guidelines in this section. In Canada, follow the requirements of B149.
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. • 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 WARNING cause serious accidents. • Conversion of this unit from natural gas to propane or vice versa will void all warranty.
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 120 Cubic ft/hr for the 140 model. The following tables are from NFPA 54. Unit: Cubic feet per hour Length Pipe Size 20' 30' 40' 50' 60' 70' 80' 90' 100' 125' 150' 200' Diameter (3 10' .0 m) (6.1 m) (9.1 m) (12.
Installation Manual Installation WATER CONNECTIONS WARNING NOTICE 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! Do not reverse the hot outlet and cold inlet connections to the water heater. This will prevent the water heater from activating properly.
Installation Manual Installation CONDENSATE DRAIN • The water heater does not include a built-in condensate neutralizer cartridge for reducing the pH level of condensate water. If local codes dictate that condensate must be neutralized prior to drainage, a condensate neutralizer must be installed. An accessory Neutralizer assembly (100112159/TH-NT01) is sold separately. (Refer to p. 10.
Installation Manual Installation Installation without neutralizer 3/8" MPT x 3/8" (or 1/2") HB* 1/2" Condensate drain tube** Installation with neutralizer 1/2" Condensate drain tube** Overflow bypass** (1/2" Condensate drain tube) 3/8" MPT x 3/8" (or 1/2") HB* 1/2" Condensate drain tube** 1/2" MPT x 3/8" FPT (Included with Neutralizer accessory) Neutralizer cartridge (Included with Neutralizer accessory) 1/2" FPT x 1/2" HB (Included with Neutralizer accessory) 1/2" Condensate drain tube** 2" (50 mm) M
Installation Manual Installation ELECTRICAL CONNECTIONS • • WARNING • • 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. or the current edition of CSA C22.1 Canadian Electrical Code Part 1 in Canada.
Installation Manual Installation -Installation• This remote controller is NOT waterproof. • The water heater can only have one remote controller. • Do not install in high temperature environments, high humidity conditions outdoors, in direct sunlight, or within the reach of children. WARNING • Make sure the remote controller does not come into contact with water or oil. • Failure to observe these warnings could result in personal injury or electrical shock.
Installation Manual Installation 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. Required circulation flow rates are labeled next to each application diagram. These flow rate WARNING requirements must be followed.
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 (Massachusetts energy code) Atmospheric vacuum breaker Thermostatic mixing valve Heating Coil (used with air-handler) Check valves 50’-0” maximum distance from water heater to fan coil.
Installation Manual Initialial operation 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. Forced repair may result in a fire or explosion due to gas leaks.
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. When you call, please tell us the product name and the serial number of your unit written on the rating plate of the water heater.
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.
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. Flammable Vapors FLAMMABLES 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.
Owner's Guide Normal Operation NORMAL OPERATION BUILT-IN AND REMOTE CONTOROLLER The illustration below shows an example of the display of the controllers. The exact display may differ from examples. "INFO" Button Display for Temperature Each time the button is pressed, the operation mode is selected in the following sequence. Inlet water temperature Outlet water temperature When the STAND BY LED is ON, the hot water set temperature will be displayed.
Owner's Guide Normal Operation TEMPERATURE SETTINGS -Using controllerOperation Screen on the controller 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. (EX.: 120 °F) (EX.: 120 °F) Press the "HOT" button or the "COLD" button to set the temperature setting of the unit.
Owner's Guide Normal Operation ADDTIONAL 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: INFO BUTTON Operation 1st. press Inlet water temperature will be displayed on the controller by pressing the "INFO" button. Inlet water temperature (EX.: 60 °F) 2nd. press Outlet water temperature will be displayed on the controller by pressing the "INFO" button.
Owner's Guide Normal Operation FLOW Household Flow Rates • The flow rate through the water heater is limited to Flow rate Appliance/Use a maximum of 7.0 GPM (26.5 L/min). GPM (US) L/min • The temperature setting, along with the supply Lavatory Faucet 1.0 3.8 temperature of the water, will determine the flow Bath Tub 4.0 – 10.0 15.2 - 37.8 rate output of the water heater. Shower 2.0 7.5 • Please refer to the temperature vs. gallons per Kitchen Sink 1.5 5.6 minute charts on p.
Owner's Guide Normal Operation The manufacturer recommends having the water heater checked once a year or as necessary by a licensed technician. If repairs are needed, any repairs should be done by a licensed technician. Flame blowing up Blue flame Satisfactory Red or Yellow flame Unsatisfactory Unsatisfactory -Measuring inlet gas pressure1. Turn off all electric power to the water heater if service is to be performed. 2.
Owner's Guide Troubleshooting TROUBLESHOOTING PROBLEM SOLUTIONS TEMPERATURE and AMOUNT OF HOT WATER It takes a long time to • get hot water at the fixtures. • The water is not hot • Compare the flow and temperature. See the charts on p. 56. enough. • Check cross plumbing between the cold water lines and hot water lines. • Is the gas supply valve open fully? (p. 37) • Is the gas line sized properly? (p. 28) • Is the gas supply pressure sufficient? (pp.
BUILT-IN/REMOTE CONTROLLER WATER HEATER Owner's Guide Troubleshooting PROBLEM SOLUTIONS The fan motor is still spinning after operation has stopped. Unit sounds abnormal while in operation Controller does not display anything when the power button is turned on. • This is normal. After operation has stopped, the fan motor keeps running from 15 to 70 seconds in order to re-ignite quickly, as well as purge all the exhaust gas out of the flue. • Contact the manufacturer at 1-877-737-2840.
Owner's Guide Troubleshooting -Fault Analysis of Error Codes- If the error code is displayed on the computer board of the water heater or remote controller and/or temperature controller, please check the following. After checking, consult with the manufacturer. Remote 031 101 111* 121* 311* 321* 341* Green LED Malfunction description Diagnosis One Time Incorrect DIP switch • Check the DIP switch settings on the PCB (Part #701).
Owner's Guide Troubleshooting Remote Green LED 391* Two Times 510 Six Times 551 Six Times 611* Four Times 701* 711* One Time One Time 721* Six Times 741 N/A 751 N/A 941 Five Times 991 Five Times Malfunction description Diagnosis Air-fuel ratio rod • Check for connection/breakage of wires (Part #708) failure and/or soot on the AFR rod (Part #108). Abnormal main gas • Check for connection/breakage of wires (Part #707) solenoid valve and/or burn marks on the computer board (Part #701).
Owner's Guide Components Diagram COMPONENTS DIAGRAM Case assembly Indoor model 003 Outdoor model 052 052 007 004 004 052 001 714 001 704 006 702 704 005 052 050 002 002 Built-in controller Temperature remote controller Indoor model 722 721 723 724 721 056 50 Page
Owner's Guide Components Diagram Computer board assembly 701 709 707 710 103 711 716 708 402 408 for Indoor model for Outdoor model 713 706 407 060 Surge box assembly 120 053 712 710 703 705 701 712 51 Page 402
Owner's Guide Components Diagram Burner assembly Burner assembly 101 104 115 053 053 108 107 401 106 116 708 053 110 061 109 111 709 112 117 053 103 Manifold 102 assembly 114 105 064 113 053 707 054 150 119 120 709 151 057 055 062 053 055 117 051 711 52 118 Page
Owner's Guide Components Diagram Water Way assembly Outdoor Model Indoor Model 417 455 467 412 063 154 452 063 417 463 455 063 458 463 152 455 B 418 467 455 E 455 458 467 455 A 458 455 A 053 463 455 467 063 458 153 463 B 419 465 466 064 715 464 413 450 053 for Indoor model A 053 451 413 401 B 411 058 E 451 C 414 460 462 468 052 461 D 451 408 059 403 052 53 Page 402 459 D 457 456 406 404 405 416 409 415 414 453 457 C 451 413 458 455 454 4
Owner's Guide Parts List PARTS LIST Item # 001 002 003 004 005 006 007 050 051 052 053 054 055 056 057 058 059 060 061 062 063 064 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 Part # Description Case assembly for Indoor model Case assembly for Outdoor model Front cover for Indoor Front cover for Outdoor Intake air port assembly Bracket Junction box Power supply cord assembly Back guard panel Truss screw M4×12 (W/Washer) SUS410 Truss screw M4×10 (W/Washer) SUS410 Truss s
Owner's Guide Parts List Item # Part # Description 140 model T-H3M model 150 151 152 153 154 401 O-ring P18 NBR (Black) O-ring P20 NBR (Black) Silicon ring for Outdoor model Exhaust port for Outdoor model Silicon ring Primary heat exchanger assembly for 140 Indoor and Outdoor 100074533 100074242 100074553 100074306 100074250 100076510 EZP18 EK042 EK442 EX13J EKN50 EK467 402 403 404 405 406 407 408 409 410 411 Flow adjustment valve / Flow sensor Condensate drain port Water inlet Inlet drain plug In
Owner's Guide Parts List Item # Part # Description 140 model T-H3M model 701 Computer board 100076330 EK480 702 703 704 707 708 709 710 Rubber grommet Surge box 120 VAC wire for Indoor model 120 VAC wire for Outdoor model 120 VAC Power ON-OFF switch Remote controller wire for Indoor model Remote controller wire for Outdoor model Gas valve wire Flame rod wire Igniter assembly Freeze protection thermostat N/A 100076100 100074601 100074697 100074326 100076337 100074634 100076340 100076341 100076342
