On-Demand Water Heater Installation Manual and Owner’s Guide For supplying potable hot water R D R ANSI Z21.10.3・CSA 4.3 Models 910/910 ASME Gas Tankless Water HeaterTM Suitable for combination potable water heating and space-heating Please refer to local codes for space-heating compliance.
Contents CONTENTS Installation Manual SPECIFICATION Owner's Guide OPERATING SAFETY...............................................................34 NORMAL OPERATION............................................................36 GENERAL.............................................................................36 WITH REMOTE CONTROLLER............................................36 Set temperature................................................................37 Temperature tables of controller...........
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 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. • 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 Introduction Combustion sections Right combustion section Left combustion section The 910 has two combustion sections. The combustion section that turns on first is the primary section. The secondary section will activate when the flow rate through the primary section meets the flow listed in the table below. Set temperature °F (°C ) Flow rate at which the secondary section activates GPM (L/min) 100-120 (38-49) 125,130 (52,54) 140 (60) 145,150 (63,65.5) 155-185 (68-85) 3.2 (12) 2.
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 and 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 • The 910 model weighs 102 lbs. (46.3 kg). Ensure that any and all support structures (whether it is installed on a wall, on a support stand, etc.) have enough strength to support and hold the water heater. • When handling the 910, do not place your hands inside the flue collar. Injury may result. WARNING • Installation and service must be performed by a qualified installer (for example, a licensed plumber or gas fitter). Otherwise, the warranty will be void.
Installation Manual Installation CLEARANCES WARNING Maintain all clearances around the water heater. Failure to do so could create a fire hazard, potentially leading to death, serious injury, and/or property damage. Installation Top Bottom Front Back Sides Indoor installation 12 in. (305 mm) 12 in. (305 mm) 4 in.** (102 mm) 1.0 in. (25 mm) 3 in. (76 mm) Outdoor installation 36 in. (914 mm) 12 in. (305 mm) 24 in. (610 mm) 1.0 in. (25 mm) 3 in.
Installation Manual Installation 1. Temperature remote controller 100112155 (TM-RE30) 2. Multi-unit controller 100112691(TM-MC02) The multi-unit controller can control a maximum of 10 water heaters, from 15,000 BTU to 3,800,000 BTU. It also works as a diagnostic tool that will give an error code whenever there is a problem with the water heater system. Each multi-unit controller comes with a remote controller.
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 water heater in a pit or location where gas and water can accumulate.
Installation Manual Installation OUTDOOR INSTALLATION 1. Follow all local codes, or in the absence of local codes, follow the current edition of the National 2. 3. 4. 5. Fuel Gas Code: ANSI Z223.1/NFPA 54 in the USA or B149.1 Natural Gas, Propane Installation Code in Canada. Install outdoors only in areas with mild, temperate climates. Change the DIP switch for outdoor installation. Locate the lower banks of DIP switches on the right of the 7-Seg. LED on the center computer board.
Installation Manual Installation INDOOR INSTALLATION 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. Do not change the DIP switch settings for indoor installations. The DIP switch settings were already set at the factory. Make sure the No. 5 ("DIRE") and No. 6 ("OUT") DIP switches are in the OFF position.
Installation Manual Installation Combustible air supplied by mechanical fan or make up air device The water heater is equipped with a combustible air sensor that will shut off the unit when inadequate combustible air supply to unit is detected. • If a mechanical fan or make up air device is used to supply air to the water heater or utility room, the installer should make sure it does not create drafts which could cause nuisance shutdowns.
Installation Manual Installation VENTING INSTRUCTIONS For indoor installations -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 product WARNING warranty. • When installing the vent system, all applicable national and local codes must be followed.
Installation Manual Installation downward and for vertical runs, installing a condensate drain is recommended. Please refer to pp. 17 and 18 for the diagrams. • 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: • Avoid locating the water heater vent termination near any air intake devices. These fans can pick up the exhaust flue products from the water heater and return them to the building.
Installation Manual Installation -Vent length and No. of Elbows- This is a Category III appliance and must be vented accordingly. The vent system must be sealed airtight. All seams and joints without gaskets must be sealed with high heat resistant silicone sealant or UL listed aluminum adhesive tape having a minimum temperature rating of 350 °F (177 °C). For best results, a vent system should be as short and straight as possible.
Installation Manual Installation Direct vent installations Horizontal Installation Vertical Installation Roof Wall Hanger Rain cap Roof flashing Sidewall vent termination Vertical condensation drain** Fire stop Back flow preventer* Hanger Vertical condensation drain** *Backflow preventer (Recommended for freezing weather conditions: 36 °F (2 °C) and below). **Vertical condensation drain must be installed in accordance with local codes.
Installation Manual Installation -Clearances for rooftop 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 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.
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 B Operable Fixed closed V B V X V B V M I J A X V K Regulator/Gas meter vent outlet B Canada Installations1 Direct vent and other than direct vent US Installations2 Direct Other than vent directdvent A Clearance above grade, veranda, porch, deck, or balcony 1 ft (30 c
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 cause serious accidents. WARNING • 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 380 Cubic ft/hr. The following tables are from NFPA 54. Unit: Cubic feet per hour Pipe Size Diameter: 10' (3.0) in. 1/2" 172 3/4" 360 1" 1 1/4" 1 1/2" 2" 20' (6.
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! Failure to follow these instructions could lead to WARNING property damage, personal injury, or loss of life. NOTICE Do not reverse the hot outlet and cold inlet connections to the water heater.
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. or the current edition of CSA C22.
Installation Manual Installation EXTERNAL FAN MOTOR CONNECTION This water heater can be connected to a external fan motor so that it can activate when the water heater requires more combustion air. Refer to the following diagram and the instructions of the fan motor manufacturer. Disconnect the power supply from the water heater. Center computer board These components are NOT included with the 910 model and are external to the unit. They must be purchased seperately.
Installation Manual Installation B) Storage Tank Circulation Control: DIP SW No. 5 ON The 910 will heat the water 5.4 °F (3 °C) higher than its set temperature unless it is set at 185°F (85°C). This is to ensure a higher rate of recovery for storage tank applications. The circulation pump (from storage tank to 910) will always remain running. C) Energy Conserving Recirculation: DIP SW No. 4 and No. 5 ON This pump control mode is similar to the Recirculation Control mode.
Installation Manual Installation EASY-LINK SYSTEM The water heater can be connected with other heaters of the same model with communication cables to work as a multiple manifold system. • The Easy-Link System can connect up to 4 units. • A communication cable (gray color) comes with each unit. The cables use 18 gage wire and can be up to 250 ft (76.2 m) long all together. You can manifold from 2 units to 4 units without a multi-unit controller.
Installation Manual Installation • To change the DIP switch settings for an Easy-Link System, locate the lower bank of DIP switches at the bottom, left of the center computer board. • DO NOT adjust any other DIP switches . • Turn off the power supply to the water heater before changing the DIP switch WARNING settings. • Failure to observe this warning could result in carbon monoxide poisoning or death.
Installation Manual Installation MULTI-UNIT SYSTEM Multiple 910 models can be combined for a Multi-Unit System, along with the multi-unit controller 100112691(TM-MC02). Each multi-unit controller can control from 2 to 10 units for commercial or residential applications. For a 10-unit system, the computer can modulate from 15,000 BTU/h to 3.8 million BTU/h. An individual cut-off switch is recommended for each unit in a Multi-Unit System for the purpose of maintenance.
Installation Manual 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. Required circulation flow rates are labeled next to each application diagram. These flow rate requirements must be WARNING followed.
Installation Manual Applications DUAL-PURPOSE HOT WATER HEATING (Domestic and Space Heating): Diagrammatic layout of radiant heating and domestic water heater. Tempered water to plumbing fixtures.
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. 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 GENERAL Temperatures 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. WARNING °F °C Time to produce serious burn 120 49 more than 5 min. 125 52 130 54 135 57 1½ to 2 min. about 30 sec. about 10 sec. 140 60 145 63 less than less than 5 sec. 3 sec. 150 66 155 68 about 1½ sec. about 1 sec. • Flow rate to activate the water heater: 0.
Owner's Guide Normal Operation -Set temperature1. Turn on the 120 VAC power supply to the unit. 2. Press the "ON/OFF" button on the controller in order to turn the controller on. When ON, the STAND BY LED is lit. The set temperature of the output water appears on its display. 3. Press the "HOT" button or the "COLD" button to set the temperature setting of the unit. L/ M To increase the temperature from 120 °F (50 °C) to 140 °F (60 °C): Press the "HOT" button to set 120 °F (50 °C).
Owner's Guide Normal Operation You can get some information about the water heater condition by pressing the "INFO" button. The following information will be displayed seqentially by pressing the "INFO" button.
Owner's Guide Normal Operation FLOW • The flow rate through the water heater is limited to Household Flow Rates a maximum of 14.5 GPM (54.9 L/min). Flow rate • The temperature setting, along with the supply Appliance/Use GPM (US) L/min temperature of the water, will determine the flow Lavatory Faucet 1.0 3.8 rate output of the unit. Bath Tub • Please refer to the temperature vs. gallons per 4.0 – 10.0 15.2 - 37.8 minute charts on p. 52 to determine the likely flow Shower 2.0 7.
Owner's Guide Normal Operation Flame lifting above the burner Blue flame Satisfactory Unsatisfactory Red or Yellow flame Unsatisfactory The manufacturer recommends having the unit checked once a year or as necessary by a licensed technician. If repairs are needed, any repairs should be done by a licensed technician. -Measuring inlet gas pressure- 1. Turn off all electric power to the water heater if service is to be performed. 2.
Owner's Guide Troubleshooting TROUBLESHOOTING GENERAL TEMPERATURE and AMOUNT OF HOT WATER 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. the distance or the bigger the pipes, the longer it will take to get hot water.
Owner's Guide Troubleshooting PROBLEM EASY-LINK SYSTEM REMOTE CONTROLLER WATER HEATER Unit does not ignite when water goes through the unit. SOLUTIONS • • • • • • • The fan motor is • still spinning after operation has stopped. Unit sounds abnormal • while in operation Remote controller does • not display anything • when the power button is turned on. • Is the flow rate over 0.5 GPM (1.9 L/min)? (p. 36) Check the filter on the cold water inlet. (p.
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 7-Seg LED on the center computer board and remote controller (if it is installed.) • Consult the table on the following pages for the description of each error code.
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. Error Malfunction code description 031 Incorrect DIP Diagnosis • Check the DIP switches settings on the PCB (Part #701). switch setting 101 Warning for the • Check the gas type of the water heater matches the gas supplied to it.
Owner's Guide Troubleshooting Error code 611* 631 651* 661* 681 701* 721* 741 761 991* Malfunction description Diagnosis Fan motor fault • Check for connection/breakage of wires, dust buildup in the fan motor (Part #416) and/or burn marks on the computer board (Part #701). • Check for frozen/corrosion of connectors. Abnormal external • Check whether the pump connected to center computer board works pump properly.
Owner's Guide Components Diagram COMPONENTS DIAGRAM 3 Case assembly 4 12 3 1 3 2 4 2 10 4 3 11 5 718 3 6 13 Computer board assembly 8 9 4 7 3 The 910/910 ASME models share the same components.
Owner's Guide Components Diagram Burner assembly The 910/910 ASME models share the same components.
Owner's Guide Components Diagram Combustion and Exhaust assembly Other than Part# 444, Part# 445, Part# 446 and Part# 447, the 910/910 ASME models share the same components.
Owner's Guide Components Diagram Water Way assembly 910 model 411 418 411 419 426 411 427 419 420 428 419 411 422 426 421 418 419 411 411 411 425 411 419 427 419 419 407 427 423 424 411 427 406 406 422 430 407 419 425 439 440 411 419 411 910 ASME model 429 425 421 419 442 411 443 426 419 434 411 418 435 411 419 420 411 441 430 436 427 411 437 407 406 411 431 419 407 406 113 438 419 411 425 419 433 3 449 422 419 419 432 420 421 419 427
Owner's Guide Parts List PARTS LIST Other than the heat exchanger assembly (No. 444), supply pipe (No. 445), O-ring P18 FKM (No. 446), connection pipe (No. 447), left cold pipe (No. 448), left hot pipe (No. 449), right hot pipe (No. 450) and right cold pipe (No. 451), all of the T-M50 ASME / 910 ASME’s components are the same as the T-M50 / 910.
Owner's Guide Parts List Item # 401 402 403 404 405 406 407 408 409 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 701 702 703 704 705 706 707 708 709 710 Description 910 models 100074452 100074334 100074280 100074272 100074281 100074282 100076303 100074408 100074273 100076308 100074246 100074413 100074227 100074528 100074228 100074251 100074271 100074262 100076308 100074277 100074435 10007
Owner's Guide Parts List Item # 711 712 713 714 715 716 717 718 719 720 721 722 723 Description Parts # 910 models 100074431 100074418 100074419 100074428 100074233 100074425 100074426 100074312 100074527 100074411 100074515 100074468 100074399 Multi communication wire Left communication wire Right communication wire Remote controller terminal Wire cramp Left PCB fixing plate Right PCB fixing plate Transformer Truss screw M4X12 Evatite Ground fault circuit interrupter Flat head screw M3X12 Surge box Sur
