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A.O. Smith ATI-540H-N Technical Documents

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1. Lower bank of DiPswitches Lower bank of E DiPswitche DiPswitches 9SvTETT SHEET ne Communication cable A MS Wrong Connections Connecting two PARENT connectors together from two separate units may damage the computer board The communication cable has a female end and a male end so it s impossible to have a PARENT to PARENT connection with the WARNING communication cable Do not splice or modify connectors CASE 4 Remote controller connected to incorrect unit Either a temperature controller or a remote controller has to be connected to the PARENT unit If the remote controller is connected to a CHILD unit it will only control that particular individual CHILD unit and will not control the Easy Link System as a whole The temperature controller of the CHILD unit will not control the unit on the system PARENT unit CHILD 1 unit Connectors Connectors ed G G Remote controller 1N3uvd D Lower bank of gt 4 Lower bank of DIPswitches DIPswitches Communication cable ANS 277 MULTI UNIT SYSTEM Installation Manual Multiple 540 T H3 models can be combined for a Multi Unit System along with the multi unit controller Part 9008300005 TM MC02 The multi unit controller can control fr
2. 064 462 lt y Q 467 y oA 462 z 4 _540 T H3 459 model E B as 415 P 401 411 451 P C 9 HB E um 9 A Ca i n RE gt D 618 A R 3 414 414 450 451 D 466 wy Qv 414 240 T H3J and 466 340 T H3S models 009 052 455 uU A SU SIN Ae B 052 n 458 6 is 62 APT DS P N A 0 B W Ory S 6248 a 9 Bypass section lt 540 T H3 model Water outlet section Water inlet section 58 Page PARTS LIST 001 002 003 004 005 006 007 008 009 050 051 052 053 054 055 056 057 058 059 060 061 062 063 064 065 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 Description Case assembly for Indoor models for Outdoor models Front cover for 240 and 340 Indoor T H3J DV and T H3S DV for 240 and 340 Outdoor T H3J OS and T H3S OS for 540 Indoor T H3 DV for 540 Outdoor T H3 OS Intake air port assembly Bracket Junction box Power supply cord assembly Back guard panel Chamber fixing plate Condensate drain port Screw M4x12 W Washer Screw M4x10 W Washer Screw M4x10 Coated Screw M4x10 Hex head screw M4x12 W Washer Hex head screw M4x8 Pan screw M4x20 Tap tight screw M4x12 FEZN Screw M3x6 Screw M4x6 Screw M4x12 Screw M3x6 Pan screw M4x8 Wire clamp 60 Screw M4x10 Screw M3x6 SUS3 Burner assembly Manifold with gas valve assembly LP Manifold with gas valve assembly NA Fan motor for Indoor models Fan m
3. Error code e Green LED on the computer board The green LED on the computer board will be blinking two times Easy Link System For the 540 T H3 model only 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 same error code is displayed in an Easy Link System Example If Unit 2 has the 321 error code inlet thermistor failure e Indicator on the temperature controller Parent unit or Remote controller E T gt 321 and 2 will intermittently flash on nw HL o the display And it shows that Unit 2 has Error code the error Unit 2 321 will intermittently flash on the display And the green LED on the computer board will be blinking two times just like in the single unit example Unit 1 PARENT Unit 3 and 4 These units will not display anything as the error code does not pertain to them E Owner s Guide Alochhnn esto 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 a Malfunction Remote Diagnosis description 101 111 121 311 321 331 341 One e Five Times Incorrect DIPswitch setting
4. e Condensate cannot be effectively neutralized if the neutralizer elements inside the Neutralizer accessory have been completely consumed If this happens condensate will remain acidic and can possibly cause damage to items such as pipes concrete etc if drained improperly The Neutralizer cartridge is designed to last for 3 years before replacement However the actual life of the neutralizer may vary depending on the application and usage Please ensure that the cartridge is properly replaced before the neutralizer elements have been completely consumed All preventative measures and safety practices must be adhered to when draining condensate The manufacturer will not be responsible for any damage caused by condensate Adrain pan or other means of protection against water damage is required to be installed under the water heater in case of leaks ELECTRICAL CONNECTIONS Follow the electrical code requirements of the local authority having jurisdiction In the absence of such requirements follow the latest edition of the National Electrical Code ANSI NFPA 70 in the U S or the latest edition of CSA C22 1 WARNING Canadian Electrical Code Part 1 in Canada When servicing or replacing parts within the water heater label all wires prior to disconnection to facilitate an easy and error free reconnection Wiring errors can CAUTION ase improper and dangerous operation Verify proper operation after servicing All Indoor models
5. outlet inlet Pressure relief valve Installation Manual Pressure relief valve The water heater has a high temperature shutoff switch built in as a standard safety feature called a 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 ANSI Z21 22 or CAN 1 4 4 and installation must follow local codes The discharge capacity must be at least 160 000 BTU h for the 240 T H3J model 180 000 BTU h for the 340 T H3S model and 199 000 BTU h for the 540 T H3 model The pressure relief valve needs to be rated for a maximum of 150 psi 1 MPa The discharge piping for the pressure relief valve must be directed so that the hot water cannot splash on anyone or on nearby equipment Attach the discharge tube to the pressure relief valve and run the end of the tube to within 6 in 152 mm from the floor This discharge tube must allow free and complete drainage without any restrictions If the pressure relief valve installed on the water heater discharges periodically this may be due to a defective thermal expansion tank or defective pressure relief valve The pressure relief valve must be manually operated periodically to check for correct operation No valve must be placed between the relief valve and the water heater CONDENSATE DRAIN T
6. e 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 air enters through the venting into the heat exchanger whether by negative pressures within the installation location or by strong outside winds e The manufacturer also highly recommends the use of a backflow preventer sold separately to minimize the amount of cold air entering through the exhaust venting when the water heater is off It is the installer s responsibility to be aware of freezing issues and take all preventative measures The manufacturer will not be responsible for any damage to the heat exchanger as a result of freezing If you will not be using your heater for a long period of time 1 Completely drain the water out of the unit Refer to p 49 2 Disconnect power to your heater This will keep your unit from freezing and being damaged Only pipes within the water heater are protected by the freeze protection system Any water pipes hot or cold located outside the unit will not be protected CAUTION Properly protect and insulate these pipes from freezing Owner s Guide 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 e Clean the cold water inlet filter Refer to the Unit Draining and Filter Cleaning Secti
7. Remote controller c pas o U i i U a 5 E EASY LINK SYSTEM 540 T H3 model only PROBLEM Unit does not ignite when water goes through the unit 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 An ERROR code is displayed How are the unit numbers assigned _ Owner s Guide Troubleshooting SOLUTIONS e sthe flow rate over 0 5 GPM 1 9 L min p 44 e Check for the filter on cold water inlet p 49 Check for reverse connection and cross connection f you use the remote controller and or temperature controller is the power button turned on e Check if the inlet temperature is too high e 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 e Contact the manufacturer at 1 877 737 2840 Make sure the unit is supplied with power e Make sure the connection to the unit is correct p 32 NOTICE When the unit has not operated for five minutes or more the display of the controllers turns off to conserve energy When the remote controller turned ON STAND BY LED is lit Temperature controller STAND BY WARNING Tercer stove 125 52 0 an WANG hacen on CN Although the controlle
8. Secondary heat exchanger 2 LLL ELLE EL EL LLL LEER Primary Thermistor pc 2 heat exchanger T Burners Bypass valve DL Water control valve G5 p Gas valves pe cx Computer board 5 gt Fan motor Flow sensor Thermistor ba Z p a sj Eus U H rain por eo p Thermistor Gas Hot water outlet Cold water inlet This diagram illustrates tankless water heater design concepts only and does not accurately represent the water heater s physical description A hot water tap is turned on Water enters the heater The water flow sensor detects the water flow The computer initiates the fan motor and sends a signal to the igniter to create an ignition spark The gas ignites and flames appear within the burner chamber Water circulates through the heat exchanger and then gets hot Using thermistors to measure temperatures throughout the water heater the computer modulates the gas and water valves to ensure proper output water temperature When the tap is turned off the unit shuts down Installation Manual SAFETY GUIDELINES SAFETY DEFINITION Indicates an imminently hazardous situation which if not avoided will result in death or serious injury DANGER Indicates an imminent
9. Warning for the 991 error code Three Times Ignition failure Three Times Loss of flame Two Times Two Times Two Times Two Times Outlet thermistor failure 240 T H3J 340 T H3S models only Heat exchanger thermistor failure 540 T H3 model only Inlet thermistor failure Outlet thermistor failure 540 T H3 model only Exhaust thermistor failure Indoor models only Check the DIPswitch settings on the PCB Part 701 Check the gas type of the water heater Check if there is any blockage in the intake air and or exhaust If the water heater is installed as a direct vent system check whether there is enough distance between the intake air terminal and the exhaust terminal Check the altitude elevation of area of where the water heater is installed Check if there is grease and or dirt in the burner Part 101 and the fan motor Part 103 especially if the water heater has been installed in a contaminated area Check if the Hi limit switch Part 412 is properly functioning Check for connection breakage of wires Part 413 708 709 710 712 burn marks on the computer board Part 701 and or soot on the flame rod Part 108 Check if there is a buzzing spark ignition sound coming from the burner Part 101 when water heater prepares for combustion Listen for the double clunk sound coming from gas valve assembly Part 102 when water heater goes into combustion Check if th
10. 0 GPM with Various Inlet Water Temperature Incoming Temp F 540 T H3 model Output Temperature vs GPM Max 10 0 GPM with Various Inlet Water Temperature Output Hot Water GPM 0 0 Set Temp F Incoming Temp F When the set temperature is 130 F 55 C or higher maximum flow rate is limited to 8 0 GPM Owner s Guide LIMITED WARRANTY 1 The manufacturer warrants this product against defects in materials or workmanship as described in this 5 Warranty for all models document if installed within the United States or Canada 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 Unit Year Application Type Heat Exchanger Parts Labor Single Family Domestic Hot Water 150 Commercial or Multi Family Domestic Hot Water 1002 5 1 Heating 10 3 4 1 Limited Labor Coverage The manufacturer will provide for reasonable labor charges associated with warranty r
11. 16 8 m 25 ft 7 6 m 10 ft 3 0 m 85 ft 25 9 m 4 50 ft 15 2 m 20 ft 6 1 m N A 80 ft 24 4 m 5 45 ft 13 7 m N A N A 75 ft 22 9 m Excludes vent terminators termination elbows or rain caps For details on the vent connection refer to p 16 and p 17 15 Page Installation Manual Two pipe direct vent illustrations Typical installations using PVC ABS or polypropylene vent Horizontal Installation Vertical Installation Wall ge ii Fire stop Connect between exhaust vent collar and piping See the instructions below For details of the optional items refer to the Installation manual for each optional item How to install intake and exhaust venting two pipe direct vent with the indoor models 3 vent connection 1 Connect 3 couplings directly on the exhaust and intake vent collar a salah pine pipe lt 3 straight pipe of the water heater 2 Connect 3 straight pipes to the couplings 3 Uns J 3 coupling Exhaust vent collar Intake vent collar Female Female 1 0 From 3 to 4 vent connection s 1 Connect 3 x4 increasers 4 straight pipe 4 straight pipe directly on the exhaust and intake vent collar of the water heater a LJ 2 Connect 4 straight pipes to E Ke the increasers 3 x4 increaser e 3 x4 increaser G Exhaust vent collar Intake vent collar Female Female Installati
12. 4 Close the water shutoff valve 5 Open all hot water taps in the house When the residual water flow has ceased close all hot water taps 6 Have a bucket or pan to catch the water from the unit s drain plugs Unscrew the two drain plugs large and small to drain all the water out of the unit 7 Wait a few minutes to ensure all water has completely drained from the unit 8 Clean the filter Check the water filter located within Drain plug Water valve the cold inlet With a tiny brush clean the water Small filter of any debris which may have accumulated and reinsert the filter back into the cold water inlet 9 Securely screw the drain plugs back into place Hand tighten only _ Owner s Guide Troubleshooting TROUBLESHOOTING It takes long time to get hot water at the fixtures The water is not hot enough The hot water is not available when a fixture is opened The hot water turns cold and stays cold TEMPERATURE and AMOUNT OF HOT WATER Fluctuation in hot water temperature The water is too hot GENERAL NX PROBLEM SOLUTIONS The time it takes to deliver hot water from the water heater to your fixtures depends on the length of piping between the two The longer the distance or 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 38 Compare
13. codes must be followed If you install thimbles fire stops or other protective devices and they penetrate any combustible or noncombustible construction be sure to follow all CAUTION applicable national and local codes The Indoor models must be vented in accordance with the section Venting of Equipment of the latest edition of the National Fuel Gas Code ANSI Z223 1 NFPA 54 in the United States and or Section 7 of the CAN CSA B149 1 Natural Gas and Propane Installation Code in Canada as well as applicable local building codes The use of venting materials approved for Category III IV appliances is recommended whenever possible However the Indoor models may also be vented with plastic pipe materials such as ABS PVC CPVC or polypropylene For details please refer to the Exhaust Vent ABS PVC CPVC or Polypropylene Vent Section on p 15 Vent installations in Canada which utilize plastic vent systems must use venting that complies with ULC S636 General rules for venting water heaters are Place the water heater as close as possible to the vent termination The vent collar of the water heater must be fastened directly to an unobstructed vent pipe Do not weld the vent pipe to the water heater s vent collar Do not cut the vent collar of the unit The vent must be easily removable from the top of the water heater for normal service and inspection of the unit The water heater vent must not be connected to any other gas
14. come with a power plug instead of a junction box The following procedure is for outdoor models only 1 The water heater must be electrically grounded Do not attach the ground wire to either the gas or the water piping 2 The water heater requires 120 VAC 60 Hz electrical power supply that is properly grounded A proper disconnect i e on off switch power plug etc controlling the main power to the water heater must be provided for service reasons Must comply with local codes e Connect the power supply to the water heater exactly as shown in the wiring diagram 3 A green screw is provided in the junction box to ground the connection 4 Can be hardwired or wired to a plug in 5 The use of a surge protector is recommended in order to protect the unit from power surges Indoor models Outdoor models Connect Green screw Power supply 120VAC 60Hz as Ground Bottom view of water heater View of electrical connections of water heater Installation Manual Installation TEMPERATURE REMOTE CONTROLLER Outdoor models only Check that these items below are included with the remote controller Temperature remote controller Screws Manual Remote controller cable INSTALLATION PE e This remote controller is NOT waterproof Do not install in high temperature environments steamy conditions such as a bathroom outdoors in direct sunlight or within the reach of children CAUTION Make
15. deck or balcony A 1 foot 1 foot 1 foot 4 feet from below or B Clearance to window or door that may be opened 3 feet 1foot side opening 1 foot from above opening C Clearance to permanently closed window e Vertical clearance to ventilated soffit located above D the vent terminator within a horizontal distance 7 5 of 2 feet 61cm from the center line of the terminator E Clearance to unventilated soffit x i d F Clearance to outside corner Y d x G Clearance to inside corner z x Clearance to each side of center line extended A H 3 feet above meter regulator assembly Clearance to service regulator vent outlet 3 feet Clearance to non mechanical air supply inlet to 4 feet from below or J building or the combustion air inlet to any other 3 feet 1foot side opening 1 foot application from above opening K Clearance to mechanical air supply inlet 6 feet 3 feet 3 feet L Clearance above paved sidewalk or paved driveway 7 feet 7 feet located on public property M Clearance under veranda porch deck or balcony 1 foot wi wi For clearances not specified in ANSI 2223 1 NFPA 54 or CAN CSA B149 1 please use clearances in accordance with local installation codes and the requirements of the gas supplier 22 Page Installation Manual For sidewall terminations Please 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 CAUTION guideli
16. 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 The manufacturer does not recommend installing the water heater in a pit or location where gas and water can accumulate Do not have the vent terminal pointing toward any operating window door or opening into a building Do not install next to any source of airborne debris such as a clothes dryer that can cause debris to be trapped inside the combustion chamber unless the system is direct vented The manufacturer does not recommend installing the water heater in an attic due to safety issues If you install the water heater in an attic Make sure the unit will have enough combustion air and proper ventilation Keep the area around the water heater clean When dust collects on the flame sensor the water heater will shut down on an error code Place the unit for easy access for service and maintenance Adrain pan or other means of protection against water damage is required to be installed under the water heater in case of leaks The warranty will not cover damage caused by water quality e Only potable water or potable water glycol mixtures can be used with this water heater Do not introduce pool or spa water or any chemically treated water into the water heater e Water hard
17. intake and exhaust 1 ft 305 mm 0 5 ft keep the termination mih 159 mm min clearances shown in the diagrams on the right A lt Case 2 gt Exhaust Exhaust m di N of g AT Intake 0 5 ft 159 mm min 1 ft 305 mm min Installation Manual Exhaust and or direct vent sidewall terminations should be at least 2 ft 610 mm away from an opposite surface wall Do not place the termination directly in front of an opening into a building Exhaust nt 610mm termination min For rooftop terminations Please 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 CAUTION guidelines Local codes supersede these guidelines 2 ft 610 mm min 3 ft 914 mm min Intake air Intake air Exhaust gas 1ft 305 mm min 1 ft 305 mm min 1ft 1ft 305 mm min 305 mm min i4 wen 1ft 8 305 mm min Exhaust terminations must be at least 1 ft 305 mm away from any obstructions Installation Manual 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 CAUTION inlet pressu
18. into the product e Introduction of pool water spa water or any chemically treated water into the product e Introduction of hard water measuring more than 7 grains per gallon 120 ppm for single family domestic applications or more than 4 grains per gallon 70 ppm for all other types of applications into the product e Introduction of untreated or poorly treated well water into the product e Introduction of water with pH levels less than 6 5 and greater than 8 5 into the product 68A161 2
19. risk Before bathing or showering always WARNING check the water temperature Do not store or use gasoline or other flammables vapors or liquids in the vicinity of this appliance e Do not reverse the water and or gas connections as this will damage the gas valves and can cause severe injury or death Follow the diagram on p 27 when installing your water heater Do not use this appliance if any part has been in contact with or been immersed in water Immediately call a licensed plumber a licensed gas fitter or a professional service technician to inspect and or service the unit if necessary Do not disconnect the electrical supply if the ambient temperature will drop below freezing The Freeze Protection System only works if the unit has electrical power The warranty will not be covered if the heat exchanger is damaged due to freezing Refer to the section on the Freeze Protection System on p 48 for more information Installation Manual INSTALLATION 10 GENERAL Follow all local codes or in the absence of local codes follow the most recent edition of the National Fuel Gas Code ANSI Z223 1 NFPA 54 in the USA or CAN CSA B149 1 Natural Gas Propane Installation Code in Canada 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 The manifold gas pressure is preset at the factory It is
20. the flow and temperature See the charts on p 62 Check cross plumbing between cold water lines and hot water lines Is the gas supply valve fully open p 40 Is the gas line sized properly p 26 Is the gas supply pressure sufficient p 27 Is the set temperature set too low p 44 and 45 Is the set temperature set too high p 44 and 45 Make sure the unit has 120 VAC 60 Hz power supply If you are using the remote controller and or temperature controller is the power button turned on Is the gas supply valve fully open p 40 Is the water supply valve fully open p 40 Is the filter on cold water inlet clean p 49 Is the hot water fixture sufficiently open to draw at least 0 5 GPM 1 9 L min through the water heater p 44 Is the unit frozen p 48 Is there enough gas in the tank cylinder For Propane models Is the flow rate enough to keep the water heater running p 44 If there is a recirculation system installed does the recirculation line have enough check valves p 38 Is the gas supply valve fully open p 40 Is the filter on cold water inlet clean p 49 Are the fixtures clean of debris and obstructions Check if the flow rate is too low p 44 Is the filter on cold water inlet clean p 49 Is the gas line sized properly p 26 Is the supply gas pressure sufficient p 27 Check for cross connection between cold water lines and hot water lines M WATER HEATER
21. 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 e Be sure to check for the presence of leaking gas toward the bottom of the unit because some gases are heavier than air and may settle towards the floor e Check the GAS PRESSURE Refer to p 27 Do not try to light the burner manually It is equipped with an electronic ignition device which automatically lights the burner Check for PROPER VENTING and COMBUSTIBLE AIR to the water heater e Purge the GAS and WATER LINES to remove any air pockets e Do not use this water heater if any part has been submersed under water Immediately call a qualified service technician to inspect the water heater and to replace any damaged parts IF YOU SMELL GAS Do nottry to start the water heater Do not touch any electric switches do not use any phone in your building mmediately call your gas supplier from a neighbor s phone Follow the gas WARNING supplier s instructions f you cannot reach your gas supplier call the fire department 1 Once the above checks have been completed please clean filter of any debris Refer to p 49 for instructions Fully open the manual water control valve on the water supply line Open a hot water tap to verify that water is flowing to that tap Then close the hot water
22. the water heater gt 1 2 3 4 gi M Disconnect power supply from the water heater Take off the water heater s front cover Locate the remote controller terminals See the diagrams below Take off the back plate from the remote controller and then attach the two fork terminals to connector base on the backside of the remote controller with two screws Make sure the terminals are firmly fixed Pull the remote s wires through the hole at the bottom of the water heater s casing Properly attach the remote s wires to the remote controller terminal on the computer board No polarity Do NOT jump or short circuit the wires or computer will be damaged Replace Front Cover securely Wires used for the remote controller connection must be e Minimum 20 gauge wire No polarity e Maximum 400 ft 122 m long 240 T H3J and 340 T H3S models 9008172005 Connect other end to these terminals TM RE40 9008172005 TM RE40 Connect other end to these terminals Installation Manual EASY LINK SYSTEM Available on the 540 T H3 model only General The 540 T H3 model water heaters can be connected with allowable heaters see the table below with communication cables to work as a multiple unit manifold system e The Easy Link System allows up to 4 units to manifold together e A communication cable gray color comes with each 540 T H3 model You can manifold from 2 to 4 units without th
23. water tap the correct temperature water P lt PAR X y IA GAD l NOTICE Flow rate to activate the water heater 0 5 gallon per minute at the default set temperature 1 9 L min Flow rate to keep the water heater running 0 4 gallon per minute 1 5 L min The controllers have an energy saving mode Five minutes after the water heater stops operating the backlight of the controllers turns off The backlight of the controllers will turn back on once the water heater begins firing again Owner s Guide Normal Operation TEMPERATURE SETTINGS Set EE Screen on Screen on the controller controller Operation 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 3 When ON the STAND BY LED is lit 4 It shows the set temperature on its display as shown in 5 the picture on the right EX 120 F Press the HOT button or the COLD button to set the temperature setting of the unit Increasing temperature from 120 F 50 C to 125 F 52 C 1 The water heater must be in Stand By to increase the temperature 2 Press the HOT button to set 120 F 50 C 3 Press and hold the INFO button and the HOT button for at least 3 seconds The remote will emit a beep and change to 125 F 52 C 4 Press the HOT button to set up to 140 F 60 C Increasing tem
24. 00 PPM for normal input The manufacturer reserves the right to discontinue or change at any time specifications or designs without notice and without incurring obligation 89 0 0 74 4 2 0 04 1757 15 Installation Manual INTRODUCTION Lo QJ A This manual provides information necessary for the installation operation and maintenance of the water heater The model description is listed on the rating plate which is attached to the side panel of the water heater Please read all installation instructions completely before installing this product If you have any problems or questions regarding this equipment consult the manufacturer or its local representative This equipment is an on demand tankless water heater designed to efficiently supply endless hot water for your needs These high efficiency models have a built in secondary heat exchanger that absorbs latent heat from the exhaust gas The 240 Indoor T H3J DV 340 Indoor T H3S DV and 540 Indoor T H3 DV models are only to be installed indoors The 240 Outdoor T H3J OS 340 Outdoor T H3S OS and 540 Outdoor T H3 OS models are only to be installed outdoors The principle behind tankless water heaters is simple Intake port 4 Exhaust Exhaust thermistor gt xf lt
25. 015 eee Toll Free 1 877 737 2840 Emissions e EASY LINK SYSTEM AND MULTI UNIT SYSTEM 540 T H3 model only CONTENTS Installation Manual SPECIFICATION me X 4 INTRODUCTION EM 5 SAFETY GUIDELINES T P 6 SESETN Uzoq ior ITE 7 General eremi UM 7 Clearancesuc sos III MI III 9 Includedaccessorles eee o neue eee eee ina aine vecta ue ve ie aaa 9 Optional MEMS sies Ae e ec 9 Warning Torinstallatio nS mesage sear ERI A N o E R 11 High altitude installations ineen aA 12 Venting INSTRUCTIONS e 13 Gas supply BING Bas Pipe SIZING auiren ene i eieh EEA E EEA EER 25 Water COnnGcCcLlOFls uci cinere so ene be sea e TEE naa a aeia a a eiaa dla aeiia Eaei 27 Condetnisate draln ci EDI BERI a IRI ENIM DN SIND cet oboj 28 Electrical connections ss oerte eet trece orco p EV eas term E ef ua vse Sas ah e VER 30 Temperature remote CON OER uasa scia pan nare ES eH ea pep DERE a kk paR SERM o MS pa bekende Ebr DEK E nsky 31 Ea sy Link SV e Li MUNERE E eeen 33 Multi Unit Syste Lose ER uo td CSI toI Ga kolona E OLEI Sa EMI DA HEISE okol a MM MID MD DM xMM ME dI MU ed 37 PUP PIG cg enc PC kuan k 38 NITE OPERATION EHE 40 Owner s Guide OPERATING SAFETY e 42 NORMAL OPERATION dca sad teeters ke ia at epi un ru cep dnt Albo Ix ulate Su Ru es did Duda Du npe 44 Temperature control
26. 1 7 2 090 1 430 1 150 985 873 zie 728 677 635 600 532 482 412 2 4 020 2 760 2 220 1 900 1 680 1 520 1 400 1 300 1 220 1 160 1 020 928 794 Propane LP Supply Piping Maximum Capacity of Propane LP Based on 11 W C supply pressure at a 0 5 W C pressure drop Unit kBTU per hour Length fi a EE GE Ee OC EC OE ee ee 1009 azs 1508 2001 3 4 567 393 Sb 267 237 217 196 185 173 162 146 132 112 1 OVA p wap 590 504 448 409 378 346 922 307 275 252 213 11 2205 1 496 1 212 1 039 913 834 ZTL 724 677 630 567 511 440 117220 2078 22999 258 105599 97070 172759 MINS AN E086 150238 ES 866 787 675 25 6 221 4 331 3 465 2 992 2 646 2 394 2 205 2 047 1 921 1 811 1 606 1 496 1 260 Gas sizing example Natural Gas Water heater 199 000 BTU h Dryer 35 000 BTU h 10 Length 5 Length 3 4 Pipe size 15 Length 10 Length 1 1 4 Pipe size A B 1 Pipe size 1 2 Pipe size 10 Length 5 Length 1 Pipe size 10 Length 15 Length 1 1 4 Pipe size 3 4 Pipe size c 1 2 Pipe size Range 65 000 BTU h Take into account the distance the appliance is from the gas meter look in the above gas chart to properly size the line Gas meter Furnace 120 000 BTU h Based on Energy Content of 1 000 BTU Cubic ft Divide each appliance s BTU requirement by 1 000 BTU h to get the appliances Cubic Ft requirement For sections of the gas line supplying gas to more than one appliance Ex Point A to Point B add up the cubic
27. 319143 198 319143 214 319143 465 319143 529 319143 190 319143 530 319143 199 319143 096 319143 228 319143 095 319143 149 319143 531 319143 532 319143 533 319143 534 319143 468 319143 549 319143 550 319143 088 319143 125 319143 066 319143 146 319143 082 319143 080 319143 100 319143 091 319143 083 319143 097 319143 105 319143 226 EKK2D EX019 EK117 EXOOD EK163 EZP18 EK042 EK157 EK177 EK252 EK250 EK129 EKD58 EKK1U EKK2B EKK2C EKK4J EK137 EK207 EKK1A EK208 EKK2E EKK2T EM212 EKN34 EK333 EK209 EK210 EK211 EK231 EK105 EK251 EK256 EKK27 EK031 EKK26 EKO29 EZMO4 EZMO6 EZM14 EZM15 EZM16 EKH30 EKK24 EM192 462 463 464 465 466 467 468 469 470 471 472 473 701 702 703 704 706 707 708 709 711 713 714 7 48 716 Hig 718 719 721 722 723 724 Description Fastener 16 25A Fastener 6 15 Flat heater Drain tube Cold pipe for 240 T H3J and 340 T H3S models for 540 T H3 model Stainless heat exchanger out pipe Header connection Drain port Thermistor fixing plate Exhaust thermistor gasket Hi limit switch for exhaust Gasket Computer board for 240 T H3J model for 340 T H3S model for 540 T H3 model Rubber grommet Surge box 120 VAC wire for Indoor models for Outdoor models 120 VAC Power ON OFF switch Remote controller wire for 240 T H3J and 340 T H3S models for 540 T H3 model Gas valve wire Flame rod wire Igniter assembly
28. On Demand Water Heater Installation Manual and Owner s Guide l ANSI Z21 10 3 and CSA 4 3 Boggy ENERGY STAR Models LOW LEAD u e 240 Indoor T H3J DV 240 Outdoor T H3J OS KGS TE e 340 Indoor T H3S DV 340 Outdoor T H3S OS e 540 Indoor T H3 DV 540 Outdoor T H3 OS TM 540 T H3 model only If the information in these instructions is not followed exactly a fire or explosion may result causing property damage personal injury or death 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 Do not try to light any appliance Do not touch any electric switch do not use any phone in your building Immediately call your gas supplier from a neighbor s phone Follow the gas supplier s instructions If you cannot reach your gas supplier call the fire department Installation and service must be performed by a qualified installer service agency or the gas supplier Gas Tankless Water Heater Suitable for potable water heating and space heating Please refer to local codes for space heating compliance FEATURING e ENDLESS HOT WATER e ON DEMAND USAGE e COMPACT SPACE SAVING e ENERGY CONSERVATION If you have any questions please e COMPUTERIZED SAFETY call or write to e NO PILOT LIGHT 500 Tennessee Waltz Parkway e Satisfies the 2012 SCAOMD Rule Ashland City TN 37
29. RANTY AND IN NO EVENT WHETHER AS A RESULT OF BREACH OF CONTRACT BREACH OF WARRANTY TORT LIABILITY INCLUDING NEGLIGENCE STRICT LIABILITY INDEMNITY OR OTHERWISE WILL BE LIABLE FOR ANY SPECIAL INCIDENTAL OR INDIRECT CONSEQUENTIAL DAMAGES INCLUDING PROPERTY DAMAGE PERSONAL DAMAGES LOSS OF USE OR INCONVENIENCE SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES SO THE ABOVE LIMITATION MAY NOT APPLY TO YOU 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 SOME STATES DO NO ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS SO THE ABOVE LIMITATION MAY NOT APPLY TO YOU THIS WARRANTY WILL NOT COVER THE FOLLOWING e Any product that is not installed by a licensed plumber gas installer or contractor e Damages due to accidents abuse misuse improper installation misapplication or incorrect sizing e Damages due to fires flooding freezing electrical surges or any Acts of God Damages due to unauthorized alterations attachments and or repairs e Damages due to a lack of maintenance e g water filter water treatment system vent blockage etc e Any product installed in an improper environment e g corrosive dusty chemically contaminated excessive lint etc Ow
30. Switch wire with thermostat for Indoor models for Outdoor models Proportional gas valve wire 24V cables for 540 T H3 model Computer board cover Cable clamp for Indoor models Exhaust thermistor for Indoor models Remote fixing plate for 540 T H3 model Exhaust Hi limit switch wire Temperature controller for Indoor models Fixing plate Temperature remote controller 6 1 Page 319143 205 319143 112 319143 535 319143 536 319143 537 319143 538 319143 539 319143 540 319143 541 319143 106 319143 111 319143 104 319143 542 319143 543 319143 544 319143 545 320273 511 320273 128 319143 427 319143 546 319143 141 319143 490 319143 491 319143 492 319143 493 319143 479 319143 496 319143 497 319143 498 319143 499 319143 191 319143 500 319143 131 319143 484 319143 501 319143 502 319143 503 9008172005 Owner s Guide Parts List 240 340 and T H3J T H3S and 540 models T H3 models EKK39 EX12K EK217 EK218 EK219 EK220 EK222 EK226 EK228 EK13H EK13L EKH6G EK229 EK186 EK175 EK176 EXOOB EK280 EK146 EK143 EKK4V EK189 EK165 EK168 EK166 EK153 EK184 EK185 EM167 EK179 EKK1M EX13C EKH6E EK152 EK180 EK173 EK178 TM RE40 Owner s Guide OUTPUT TEMPERATURE CHART Chart is based on properly sized gas line 240 T H3J model Output Temperature vs GPM Max 6 6 GPM with Various Inlet Water Temperature Incoming Temp F 340 T H3S model Output Temperature vs GPM Max 8
31. System only due to scale buildup and or water leakage 661 Four Times Bypass valve fault Inspect the bypass valve Part 403 for connection 540 T H3 breakage of wires locked motor drive due to scale model only buildup and or water leakage 701 One Time Computer board fault e Check for connection breakage of wires Part 714 711 One Time Gas solenoid valve Refer to the 111 and 121 error codes drive circuit failure 721 Six Times False flame e For indoor models check if condensate drain is detection installed on the vent collar of the water heater e Check if there is leaking from heat exchanger Part 401 741 N A Miscommunication Check the model type of the remote controller between water Inspect the connections between the water heater heater and remote and remote controller controller e Check the power supply of the water heater 751 N A Miscommunication e Inspect the connections between the water heater between water heater and temperature controller and temperature e Check the power supply of the water heater controller Indoor models only 761 N A Miscommunication Check if the connections between the parent unit in Easy Link System and the child units are correct Refer to p 33 to 36 941 Five Times Abnormal exhaust e Check if the set temperature is higher than 140 F temperature 60 C and the system is Recirculation Indoor models only 991 Five Times Imperfect e Check the gas type of the w
32. TH CVPVC33 Used when terminating direct vent sealed combustion di systems with Indoor models that require a 3 in 76 mm intake a and a 3 in 76 mm exhaust This concentric termination provides the convenience of only having to make one penetration through a sidewall instead of two separate penetrations for the intake and exhaust piping The termination includes a bird screen restricting small animals pests and foreign objects from entering into the vent system 6 Non return valve 9008847005 It is a must have item for common venting system It prevents the escape of combustion gas through non operating appliances Refer to p 20 and 21 10 Page Installation Manual 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 can accumulate warranty Prohibited Prohibited Do not install this water heater under an Do not install the water heater vent terminator overhang less than 3 ft 914 mm from its top within 1 ft 305 mm in the USA of any air intake or eaves The area under an overhang must be or building opening and within 3 ft 914 mm open to three sides Outdoor models only in Canada of any
33. ad from 5 0 to 10 5 W C 1 24 to 2 61 kPa for Natural gas from 8 0 to 14 0 W C 1 99 to 3 48 kPa for Propane Pressure port WATER CONNECTIONS Do not use this water heater if any part has been submersed under water Immediately call a licensed professional to inspect the water heater to replace any damaged parts Do not reverse the hot outlet and cold inlet connections to the water heater AUTION ead This will not properly activate the water heater All pipes pipe fittings valves and other components including soldering materials must be suitable for potable water systems Before installing the water heater flush There is a wire mesh filter within A manual shutoff valve must be installed on the cold water inlet to the water heater between the main water supply line and the water heater In addition a manual shutoff valve is also recommended on the hot water outlet of the unit If the water heater is installed within or subjected to a closed loop water system a thermal expansion tank or code approved device to handle thermal expansion must be installed the water line to remove all debris and after installation is complete purge the air from the line Failure to do so may cause damage to the heater As Close as ai the cold inlet to trap debris from Possible entering your heater This will need to be cleaned periodically to maintain optimum flow Refer to p 49 Gas inlet Hot
34. air intake or building opening Outdoor models only refer to p 22 1ft 305 mm USA 3ft 914 mm Canada 1 ft 305 mm USA 3 ft 914 mm Canada Do not install next to a dryer or any source of airborne debris that can be trapped inside the combustion chamber unless the system is direct vented Installation Manual Installation HIGH ALTITUDE INSTALLATIONS Check the elevation where your water heater is installed Set DIPswitches shown in the table below depending on the altitude Indoor models Oto 2 000 ft 2 000 to 3 000 to 5 000 to DEFAULT 3 000 ft 5 000 ft 7 500 ft 10 100 ft 28830 DAD Legess 7309 L259 5078 2 12 AAA 820 225085 VD jm i Hg E no monn TT o OR HH B HEHE Ed EEE JHE ORR 240 T H3J and 340 T H3S models No 3 OFF No 3 OFF No 3 OFF No 3 OFF No 3 ON No 4 OFF No 4 ON No 4 OFF No 4 ON No 4 ON No 5 OFF No 5 OFF No 5 ON No 5 ON No 5 ON on 123456 on 223456 on 223456 ON t SNO TT na 234 6 540 T H3 model or daa CMM Dese Hi BH orr L Lower bank of DIPswitches No 2 OFF No 2 OFF No 2 OFF No 2 OFF No 2 ON NoRS OLE No 3 ON No 3 OFF No 3 ON No 3 ON No 4 OFF No 4 OFF No 4 ON No 4 ON No 4 ON Outdoor models E MN 0 to 2 000 ft 2 000 to 4 000 to LOSS DEFAULT 4 000 ft 6 000 f
35. appliance or vent stack except an approved common venting system Refer to p 20 and 21 e Avoid using an oversized vent pipe or using extremely long runs of the pipe unless it is part of an approved common vent system For rooftop venting a rain cap or other form of termination that prevents rain water from entering into the water heater must be installed e Do not terminate vent into a chimney If the vent must go through the chimney the vent must run all the way through the chimney with approved vent pipe General rules for vent terminations e 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 This can create a health hazard Locate the vent termination so that it cannot be blocked by any debris at any time Most codes require that the termination be at least 12 in 305 mm above grade but the installer may determine if it should be higher depending on the job site condition and applicable codes A proper sidewall termination is recommended when the water heater is vented through a sidewall Regarding the clearances from the exhaust termination to the air inlet or opening refer to p 22 to 24 Installation Manual Installation DIPswitch settings for Vent length Two pipe direct vent installation Refer to p 16 for details Set DIPswitches shown in the tables below depending on
36. ar of the Indoor models Intake vent collar Female Female Installation Manual Common venting system The Indoor models can be vented together using the same exhaust and intake venting e Up to 8 water heaters can be common vented together e A non return valve Part No 9008847005 must be used for each water heater that is part of the system The water heaters must all be direct vented e For common venting pieces and components the manufacturer recommends Centrotherm s vent line Allowable models for common venting 240 Indoor T H3J DV 340 Indoor T H3S DV 540 Indoor T H3 DV AN Only the models listed in the table above can be common vented together Different models cannot be common vented CAUTION Typical common vent installation examples Roof 7 nr m c d Condensate drain port Exhaust A an 4 Z9 med co f i M je E H TE 4 d Da De Intake ween er Non Return Valve wall Roof ve m Exhaust E pe m hr m cu a ho Con
37. asy Link Connection Procedures 1 Verify the set temperatures of all units within the system Every single water heater must be set to the same set temperature Installation Manual Select one unit to be the PARENT unit 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 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 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 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 Make sure the remote controller and or temperature controller display the unit The numbering system automatically allocates the unit to each water heater in the Easy Link System in accordance with the table below Unit of easy link Parent 1 Child 2 3 0r4 A 540 T H3 model computer board Easy Link Multi Unit connectors are next to To change the DIPswitch settings for the Easy Link System locate the bank of DIPswitches at the bottom left of the computer
38. ater heater combustion nspect the environment around the water heater Determine how long the unit has been installed e Check the altitude elevation of the area of where the water heater is installed e Check if there is any blockage in the intake air and or exhaust e Ifthe water heater is installed as a direct vent system check whether there is enough distance between the intake air terminal and the exhaust terminal e Check if there is grease and or dirt in the burner Part 101 and the fan motor Part 103 especially if the water heater has been installed in a contaminated area Owner s Guide Components Diagram COMPONENTS DIAGRAM Indoor models Outdoor models Temperature controller Indoor models 55 Page Owner s Guide Components Diagram Computer board assembly 240 T H3J and 340 T H3S models 540 T H3 model KE 56 Page Owner s Guide Components Diagram Burner assembly EA S yin K SY I gt a s E GE U TD EN i PEERI NSS v RM s x D P VERN ED T EN E TE VL s f o E y 3 E NIN c EJ P N ZON i N O 3 fa i RO B NY o NP SL 5 57 Page Owner s Guide Components Diagram Water Way assembly 418 412 058
39. board Do not adjust the upper bank of DiPswitches Upper bank of DIPswitches li B Basic diagram of connections between the Easy Link System units Temperature controller or PARENT unit Remote controller CHILD 1 unit CHILD 2 unit CHILD 3 unit Connectors T Connectors Connectors Connectors 3 Ik E 9999 q Z LA 5 LP NO la s L kJ fa 440 NO lt 9SvttctIl Lower bank of DIPswitches Lower bank of DIPswitches Lower bank of DiPswitches Lower bank of DIPswitches 95 tv EU osvecr 9SvtEcCI Communication cable NOTE The dark squares indicate the direction the DIPswitches should be set to Installation Manual Installation pe NOTICE Eithera temperature controller or a remote controller is required for the Easy Link System for ease of usage and maintenance ud O C Examples of incorrect settings and or connections CASE 1 Wrong DIPswitch setting on the PARENT unit e Unless you change DIPswitch No 1 of the PARENT unit to the ON PARENT unit CHILD 1 un
40. computer controlled and should not need adjustment Maintain proper space for servicing Install the unit so that it can be connected or removed easily Refer to the Clearances Section on p 9 for proper clearances The water heater must be installed in a location where the proper amount of combustible air will be available to it at all times without obstructions The electrical connection requires a means of disconnection to terminate power to the water heater for servicing and safety purposes Do not install the unit where the exhaust vent is pointing into any opening in a building or where the noise may disturb your neighbors Make sure the vent termination meets the required distance by local code from any doorway or opening to prevent exhaust from entering a building Refer to p 22 Particles from flour aerosols and other contaminants may clog the air vent build up and reduce the functions of the rotating fan cause improper burning of the gas or cause damage to the water heater Regularly ensure that the area around the unit is dust or debris free Regular maintenance is recommended for these types of environment The 240 Indoor T H3J DV 340 Indoor T H3S DV and 540 Indoor T H3 DV 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 T
41. densate drain port Z e OE o A mr 85 i Eve Cre Intake a are Non Return Valve wall For details on the installation of a common vent system please refer to the vent manufacturer s instructions Installation Manual Installation To determine the dimension of a common venting system Determine the vent diameter D and the total vent length based on the number of water heaters installed The total vent length L consists of the horizontal width W and the vertical height H See the table below E Elbow terminal pur dala Intake Total vent length L H W k Exhaust Vent diameter D Non Return Valve A Non Return Valve must be installed for each water heater This prevents lt NOTICE Regarding the clearances between the exhaust termination and the intake termination refer to p 22 to 24 Insert bird screen in elbow terminals the escape of combustion ga
42. e 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 Due to the difference in the connector type for the Easy Link System between the 710 520 model T H2 DV T H2 OS T M32 and 540 T H3 cut out 540 model T H3 DV T H3 OS the connectors for the Easy Link System and then splice the wires directly together when connecting the 710 T M32 and 540 T H3 in the Easy Link System Easy Link connection with allowable heaters 710 model T M32 T M32 ASME Wire cutters Easy Link connectors Y T din U e The Easy Link System is limited up to 4 units If you connect more than 4 units only the first 4 units will work as a part of the Easy Link System The other additional units will not work e Only listed models on the table above can be combined together as an Easy CAUTION Link System with the 540 T H3 model The 540 T H3 model cannot be combined together with other models not listed on the table above e When the 540 T H3 model is connected to other models listed above as part of an Easy Link System contact the manufacturer e When the 710 T M32 and 540 T H3 are connected together in an Easy Link WARNIN System change DIPswitch No 6 on the lower bank of DIPswitches on the 540 G T H3 model computer board to the ON position E
43. epairs 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 2 Includes recirculation and storage tank applications with proper circulation pump control e g aquastat and or timer Lack of a proper pump control will reduce the heat exchanger and parts warranty to 3 years 3 In all applications the total of length of operation time must be less than 3 000 hours for the 240 T H3J and 340 T H3S models and less than 9 000 hours for the 540 T H3 model 4 Includes dual purpose applications combination heating and domestic General terms of limited warranty This limited warranty gives you specific legal rights and you may also have other rights which vary from State to State The manufacturer will honor the warranty to the original retail buyer at the original location only within the United States or Canada and it is not transferable THIS WARRANTY COVERS ONLY FAILED MECHANICAL AND ELECTRICAL PARTS DUE TO FACTORY DEFECTS UNDER NORMAL USAGE FOR THE PRODUCT S INTENDED PURPOSES AND WITHIN THE APPLICABLE PERIOD SPECIFIED IN THE TABLE ABOVE ONLY DIRECT DAMAGES SHALL BE RECOVERABLE BY A CLAIMANT UNDER THIS LIMITED WAR
44. ere is leaking from heat exchanger Part 8401 Check if the Hi limit switch Part 4412 is properly functioning Check for connection breakage of wires Part 413 708 709 710 712 burn marks on the computer board Part 701 and or soot on the flame rod Part 4108 Check if there is leaking from heat exchanger Part 401 Check for connection breakage of wires and or debris on thermistor Part 407 408 411 715 Owner s Guide n Malfunction Remote Diagnosis description Two rem Air fuel ratio rod e Check for connection breakage of wires Part 709 failure and or soot on the AFR rod Part 108 441 Two Times Flow sensor failure e Check for connection breakage of wires and or Easy Link System only debris on the flow sensor impeller Part 402 510 Six Times Abnormal main gas Check for connection breakage of wires Part 708 solenoid valve and or burn marks on the computer board Part 701 551 Six Times Abnormal gas e Check for connection breakage of wires Part 708 solenoid valve and or burn marks on the computer board Part 701 611 Four Times Fan motor fault e Check for connection breakage of wires dust buildup in the fan motor Part 103 and or burn marks on the computer board Part 701 e Check for frozen corrosion of connectors Part 103 651 Four Times Flow adjustment Inspect the flow adjustment valve Part 402 for valve fault Easy connection breakage of wires locked motor drive Link
45. ft requirements of the appliances that are being supplied by that section and size to the farthest appliance For Example The section from A to B supplies gas to the furnace range and dryer Adding up the BTU requirements and dividing by 1 000 yields a cubic ft requirement of 220 cubic ft of gas The farthest appliance is the range which is 50 ft away from the meter Looking at the above chart and under the column of 50 ft Section A to B needs to be 1 in order to supply 220 cubic ft 26 Page Installation Manual Measuring inlet gas pressure 2 Turn the manual gas valve located on the outside of the unit clockwise to the o 1 Turn off all electric power to the water heater if service is to be performed 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 2 Connect the manometer to the pressure port Re open the manual gas valve Check to see that there Check the inlet gas pressure When the water heater Shut off the manual gas valve on the gas supply line Remove the screw for the pressure port located on the N gas inlet of the water heater shown in the diagram on the right are no gas leaks Open some of the fixtures that use the highest flow rate to turn on the water heater zy ces is on maximum and minimum burn the manometer should re
46. he 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 is sold separately In the absence of applicable local codes and regulations the manufacturer recommends that condensate be disposed of into a standard drain Connect a drain tube from the condensate drain port shown below located on the bottom of the water heater to a standard drain Follow all code requirements of the local authority on condensate neutralizers and whether or not they are required for the installation Condensate drain port Installation Manual 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 Connect a condensate drain tube to the 1 2 FPT X 3 8 or 1 2 HB Adaptor The manufacturer recommends the material of the condensate tube be either EPDM or PVC Lea
47. heating system or component s previously used with non potable water where any chemicals were added to the water heating appliances When the system requires water for space heating at temperatures higher than required for other uses a means such as a mixing valve shall be installed to temper the water for those other uses in order to reduce scald hazard potential e Water temperature over 125 F 52 C can cause severe burns instantly or death from scalding Chemicals such as diluted Glycol can be used for radiant floor Hydro fan coil air or Baseboard heating only The diluted solution of glycol must contain between 25 and 55 96 of Glycol Be aware that in closed loop glycol systems low pressure in the heat exchanger can cause low temperature boiling resulting in excessive noise and damage to the water heater Consult with the glycol maker for specifications prior to use Recirculation The recirculation pump is to be controlled by Dual set aquastat recommended w timer The recirculation pump is to provide no less than 2 GPM 7 5 L min and no more than 4 GPM 15 L min through each activated unit in the system A Air vent rh LON 9 g 5 o Ui c E os 9 x Hot water outlet to fixtures Pressure Unions relief valve E 8 Ball valves A rh Gas supply l Check valve Kun S Recirculation uu pump Air separator Expansion
48. hese components are always monitoring exhaust gas conditions in order to prevent heat damage to ABS PVC CPVC or polypropylene Plastic venting if ABS PVC CPVC or polypropylene is used If the exhaust gas temperature exceeds 140 F these components will enable the unit to safely stop operations These components are not installed on the outdoor models since the exhaust vent is built in The Indoor model requires a 3 in or 4 in make up intake air supply pipe The intake pipe must be sealed airtight Air supply pipe can be made of ABS PVC CPVC polypropylene corrugated stainless steel or Category Ill IV stainless steel Regarding exhaust pipe refer to p 13 and 15 e Sidewall venting is recommended for the Indoor model Vertical venting roof termination is acceptable The manufacturer recommends running the exhaust vent and the intake pipe as parallel as possible The 240 Outdoor T H3J OS 340 Outdoor T H3S OS and 540 Outdoor T H3 OS models only to be installed outdoors and only in the area with mild temperate climates The Outdoor model shall be wall mounted or mounted on a stand Locate the Outdoor model in an open unroofed area and maintain the following minimum clearances There is a 2 in clearance from the left and right sides of the unit to combustible and non combustible surfaces Installation Manual e Installation and service must be performed by a qualified installer for example a licensed plumber or
49. hut off fan Suggested but not required by Electronically controlled An approved temperature and pressure 248 CMR pump timer Activates relief valve Tie to location approved by every 6 hours for 60 local codes and must meet BTU rating of 50 0 maximum distance from seconds Wire to water heater model used water heater to fan coil product approved pump Developed length Not including coil in heating unit The recirculation pump is to provide no less than 2 GPM 7 5 L min and no more than 4 GPM 15 L min through each activated unit in the system NOTICE Priority Control Devices such as a flow switch an Aquastat or other electronic controller can be used to prioritize the domestic water system over the heating system e Follow all local codes or in the absence of local codes follow the most recent edition of the National Standard Code ANSI Z21 10 3 e This illustration is a concept design only The reference to the 1 8th hole in check is only for the State of Massachusetts There are a wide variety of variations to the application of controls and equipment presented Designers must add all necessary safety and auxiliary equipment to conform to code requirements and design practice For more details contact the manufacturer Installation Manual INITIAL OPERATION FOR YOUR SAFETY READ BEFORE OPERATING e Check the GAS and WATER CONNECTIONS for leaks before firing unit for the first time Open the main gas supply valve to
50. it Connectors Connectors position the system will not work as an Easy Link System The units will operate as individual units Wrong Setting Lower bank of DIPswitches AN jj Communication cable AS ZY CASE 2 Wrong connections between the PARENT unit and the CHILD 1 unit e f you connect the 1 or 2 connector of the PARENT unit to the PARENT or 1 connector of the CHILD 1 unit the system will not work as an Easy Link System The units will operate as individual units PARENT unit CHILD 1 unit Connectors Connectors PARENT unit CHILD 1 unit Connectors Connectors No 440 B 9SvVEZT o F a gt Lower bank of DIPswitches Lower bank of DliPswitches Communication cable Connections Wrong Connections Installation Manual CASE 3 Wrong connections between the CHILD 1 unit and the CHILD 2 unit f 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 Connectors Connectors Connectors
51. l Gas Input Operating Range Propane Input Operating Range Gas Connection Water Connections Water Pressure Natural gas Inlet Pressure Propane Inlet Pressure Natural Manifold Gas Pressure Propane Weight Dimensions Ignition Supply Operation Standby Freeze Protection Electric Consumption BTU h BTU h psi MPa WC kPa W C kPa W C Pa C Pa 240 540 Outdoor Outdoor T H3J DV T H3J OS T H3S DV T H3S OS T H3 DV T H3 OS Min 15 000 Min 15 000 Min 15 000 Max 160 000 Max 180 000 Max 199 000 Min 13 000 Min 13 000 Min 13 000 Max 160 000 Max 180 000 Max 199 000 3 4 NPT 3 4 NPT 15 150 0 1 1 Min 5 0 1 24 Max 10 5 2 61 Min 8 0 1 99 Max 14 0 3 48 1 50 1 70 2 45 21 2 95 2 70 373 423 610 523 734 672 2 10 1 90 DN 2155 SH 3 15 523 473 672 635 821 784 Ibs kg 58 26 3 58 26 2 58 26 3 58 26 2 59 26 8 59 26 9 inch mm VAC Hz W A W A W A 725 0001 3 1 0 03 174 1 5 40 psi or above is recommended for maximum flow The Manifold Pressure is the factory setting and generally should not need adjustment NOTE H 22 4 x W 17 7 x D 10 7 H 570 x W 450 x D 272 Electric Ignition 120 60 78 2 0 65 SPI 174 1 5 Check the rating plate to ensure this product matches your specifications e n accordance with ANSI Z21 10 3 CO emission does not exceed 4
52. ler and Remote controller cesses enne 44 GAMBA PSO E O O I EEE i Ea oa esi 44 TemperatureSettlBiBS eese ree en n iai Ea aaa aiioa 45 Temperature tabl amp eof controleren ienie eb 45 fata s iilel 1 1 7100 O O eoaid iiinn dea angenan 46 Temperature settings on the PCB Without remote controller aaneen eenn 47 ls V O O O dend eta ebde O O 48 Freeze protectioltsystem seio tea e ERR Eee ver SU ta denn eae Ead eie eue ei need aver a vu Eze ua 48 Maintenance AMG SP VID o eet omucssaotiisaeebiame pes exa a mesenccade aae dass loda deste seen EEEE EERE seas pis 49 Unit draining and filter CSP uu ou re nennen teen 49 TROVPLESFOOT i CM Nc 50 ET A ss elas REN RR TTL O 50 Error GOS RN TET ERO 52 COMPONENTS DIAGRAM ienie isen eenen onbe ERE 55 PARTS WISI NRI Ecce roo PL 59 OUTPUT TEMPERATURE CHART neten n ud dra RON pa AEE RUE D ad kat d Mane M 62 LIMITED WARRANTY EP 63 Installation Manual Installation Manual CONGRATULATIONS Congratulations and thank you for choosing our tankless Before use we recommend that you read through this s carefully Please refer to the back of the manual for details warranty Keep this manual for future reference If you lose the manual contact the manufacturer or distributor When you call please tell us the model nu serial number of your unit written on the rating plate of heater 3 Page Installation Manual Cnorifirnhnn Specifications SPECIFICATIONS Natura
53. ly 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 the National Fuel Gas Code ANSI Z223 1 NFPA 54 in the USA or CAN CSA B149 1 Natural Gas Propane Installation Code in Canada 2 Properly ground the unit in accordance with all local codes or in the absence of local codes with the National Electrical Codes ANSI NFPA 70 in the USA or CSA standard C22 1 Canadian Electrical Code Part 1 in Canada 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 Check the rating plate for the correct GAS TYPE GAS PRESSURE WATER PRESSURE and ELECTRIC RATING f this unit does not match your requirements do not install and consult with the manufacturer 5 If any problem should occur turn off all hot water taps and turn off the gas Then call a trained technician or the Gas Company or the manufacturer e Water temperatures over 125 F 52 C can cause severe burns instantly or death from scalding The water temperature is set at 120 F 50 C from the factory to minimize any scalding
54. m unexpected adjustments F 150 F 155 F 160 F 165 F 175 F and 185 F This pipe cover is fixed to the bottom of the water See the Troubleshooting Section for information on heater which hides the plumbing and improves possible error codes the visual aspects of the whole installation for the water heater 2 Pipe cover 9008331005 TH PC03 I I 1 I 1 3 Neutralizer kit 9007607005 TH NTO1 The neutralizer assembly neutralizes the condensate acidic water that forms in the secondary heat exchanger of the water heater It connects to the condensate drain port of the water heater by using connectors included with the neutralizer kit Refer to p 29 4 Sidewall vent terminator Hood and Wall thimble a Covering wall thicknesses Parti ie Terminator Hood 9007999005 Y e Wall Thimble 4 7 in 9008345005 i Wall Thimble 5 10 in 9008346005 Termination Thimble 4 7 in 9008004005 Termination Thimble 5 10 in 9008005005 Terminator Hood Wall Thimble They are used when venting out through the wall These terminations are special stainless steel vents for gas appliances and are UL listed as Category II III and IV For different wall thicknesses there are two ranges of lengths available Refer to the NovaVent brochure for details Install these vent terminations in accordance with their installation instructions and any applicable local codes 5 3 PVC concentric termination 9007611005
55. ner s Guide Freeze damage that occurs without taking proper preventive measures as described in the installation manual Condensate damage due to improperly installed or lack of a condensate trap drain Any product not installed in compliance with all applicable local amp provincial codes ordinances and good trade practices Any product sold to or installed in areas outside of the fifty states and the District of Columbia of the United States of America and Canada Any product installed in applications that cause the water heater to activate more than 300 times per day This averages to an activation every 5 minutes in a 24 hour period Any failures that are not due to defects in materials or workmanship mechanical and or electrical parts Damages due to improper installation e Gas incorrect gas pipe sizing incorrect gas meter sizing incorrect gas type and or gas pressures that fall outside the product s specified range e Water incorrect water pipe sizing water pressures that fall outside the product s specified range recirculation flow rates that fall outside the product s specified range air removal and or lack of proper methods of air removal in a closed loop circulation system See installation manual for details e Electric supply power voltages that fall outside the product s specified range Damages due to water quality e Introduction of liquids other than potable water or potable water glycol mixtures
56. nes Local codes supersede these guidelines e 2f For multiple sidewall exhaust terminations e g Multi 4 ft 305 mm 610 mm min Unit Systems an exhaust termination must be at least 1 min _ ft 305mm away from another exhaust termination An exhaust termination must also be at least 2 ft 610 mm 1ft away from an inside corner If the adjacent wall is less than 305 mm min 2 ft 610 mm of length the minimum required distance away from the inside corner will be equal to the length of Exhaust inside that adjacent wall termination 7 corner For multiple unit direct vent sidewall terminations that combine the intake and exhaust into a single penetration space each direct vent termination at least 1 ft 305 mm away from each other no matter the orientation A direct vent termination must also be at least 2 ft 610 mm away from an inside corner If the adjacent wall is less than 2 ft 610 mm of length the minimum required distance away Combined 9 from the inside corner will be equal to the length of that intake and id Zz exhaust Inside adjacent wall termination corner Case 1 gt Exhaust Exhaust uem Intake Intake P 7 ft 305 mm 610 mm min Oz For direct vent sidewall 0 5 ft terminations that use two Tm Wes mnm separate penetrations for L Ts lt gt p the
57. ness levels must not exceed 7 grains per gallon 120 ppm for single family domestic applications or more than 4 grains per gallon 70 ppm for all other types of applications Water hardness leads to scale formation and may affect damage the water heater Hard water scaling must be avoided or controlled by proper water treatment e Water pH levels must be between 6 5 and 8 5 Well water must be treated Do not install the unit where water debris or flammable vapors may get into the flue terminal Although the water heater is designed to operate with minimal sound the manufacturer does not recommend installing the unit on a wall adjacent to a bedroom or a room that is intended for quiet study or meditation etc Locate your heater close to a drain where water leakage will not do damage to surrounding areas As with any water heating appliance the potential for leakage at some time in the life of the product does exist The manufacturer will not be responsible for any water damage that may occur If you install a drain pan under the unit ensure that it will not restrict the combustion air flow CAUTION Installation Manual Installation CLEARANCES Jop Maintain all clearances around Side d Back the water heater gt Side Bottom Model Top Bottom Front Back Sides 240 Indoor T H3J DV 12 in 12 in AL lim 0 5 in 2 in sh Oele WEESP 305 mm 305 mm 102mm 13mm 51mm 540 Ind
58. nt This is the connection diagram between 540 T H3 and multi unit controller for 2 to 20 water heaters Above is a sample for 3 water heaters heater that is part of the Multi Unit System The multi unit controller automatically allocates the unit 1 20 to each water In a Multi Unit System connect the 1 connector and the 2 connector with the communication cable refer to p 33 and 34 or 18 gauge wire cables The total cable length can be up to 250 ft 76 2 m long 6 e For detailed instructions on the multi unit controller refer to the instructions that are packaged with the multi unit controller e When the 710 T M32 and 540 T H3 are connected together to the multi unit controller as a Multi Unit System refer to the installation manual of the multi unit controller for more details Installation Manual APPLICATIONS Space Heating Applications n 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 Toxic chemicals used in boiler treatments such as alcohol glycerol and glycol groups must not be introduced into the system if the system incorporates an open loop potable water system The water heater can be used to supply potable water and space heating and shall not be connected to any
59. ockwise to the OFF position Owner s Guide DANGER uu S Flammable Vapors Vapors from flammable liguids 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 Cannot be seen 2 In approved containers 2 Vapors are heavier than air 3 Tightly closed 3 Go a long way on the floor 4 Out of children s reach 4 Can be carried from other rooms to the main burner by air currents WARNING Do not install water heater where flammable products will be stored Read and follow water heater warnings and instructions If owner s manual is missing contact the manufacturer WARNING The outlet hot water temperature of the water heater is factory set at 120 F 50 C Use this heater at your own risk The set outlet water temperature can cause severe burns instantly or death from scalding Test the water before bathing or showering Do not leave children or an infirm person in the bath unsupervised DANGER Hot Water Heater temperature over 125 F 52 C can cause severe burns instantly or death from scalding Children disabled and the elderly are at the highest risk of being scalded Feel water temperature before bathing or showering Temperature limiting valves are available Ask a professional WARNING California Propositi
60. om 2 units to 20 units for commercial or residential applications 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 9008300005 TM MC02 mm U U 540 T H3 Hot Out 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 WARNING teree Remote controller cable Terminals for water heaters Communication cable 9008300005 TM MCO2 Unit 1 Connectors Connectors Connectors J C IN3UVd D Remote controller terminals Baele Lower bank of DiPswitches M X Inzuvd D Lower bank of DiPswitches a LN3YVd D No 7 Lower bank of DiPswitches 9SvVETT fu ff f A The dark squares should not need adjustme
61. on 65 lists chemical substances known to the state to cause cancer birth defects death serious illness or other reproductive harm This product may contain such substances be their origin from fuel combustion gas oil or components of the product itself Owner s Guide 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 When the STAND BY LED is ON the hot water temperature will be displayed INFO Button Each time the button is pressed the operation mode is selected EM Pata in the sequence of the following now lt 1 _ Inlet water Outlet water Water temperature temperature flow IN USE LED Green The indicator lights during combustion STAND BY LED Orange The indicator is ON to show that MADE IN JAPAN power is ON ON OFF Button Press this button to HOT Button start or stop operation COLD Button Press the HOT button or the COLD button to set the hot water temperature above ove 125 F 52 C can rom scalding Children GENERAL Temperature above 125 F 52 C can cause severe burns or death from scalding Children disabled and the elderly are at high risk of being injured CAUTION 1 Open a hot water tap 2 Mix cold water with the hot to get 3 Close the hot
62. on Manual Single pipe with room air intake illustrations Typical installations using PVC ABS or polypropylene vent Horizontal Installation Hanger Connect between exhaust vent collar and piping See the instructions below Wal Vertical Installation Roof flashing Fire stop For details of the optional items refer to the Installation manual for each Optional item How to install single vent with the indoor models 3 vent connection 1 Connect a 3 elbow directly on the intake vent collar of the water heater 2 Connect a 3 coupling directly on the exhaust vent collar of the water heater 3 Connect a 3 straight pipe to the coupling From 3 to 4 vent connection 1 Connect a 3 elbow directly on the intake vent collar of the water heater 2 Connect a 3 x4 increaser directly on the exhaust vent collar of the water heater 3 Connect a 4 straight pipe to the increaser IL 3 straight pipe 3 elbow with geo 3 coupling bird screen Exhaust vent collar Intake vent collar Female Female 4 straight pipe 3 elbow with AS ie 3 x4 increaser bird screen Exhaust vent collar Intake vent collar Female Female Installation Manual Installation Exhaust vent Stainless steel vent This is a Category IV appliance and must be vented accordingly The vent system must be sealed airtight All seams and joints without ga
63. on in this page e Be sure that all openings for combustion and ventilation air are not blocked e 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 n accordance with all local codes and common safety practices water discharged from the pressure relief valve can cause severe burns instantly from scalding DO NOT touch the pressure relief valve e fthe relief valve discharges periodically it may be due to thermal expansion in a closed water supply system Contact the water supplier or local plumbing inspector on how to correct this situation e Visual check of burner flames see below through the burner window in the burner assembly located at the middle of the water heater Flame blowing up Red or Yellow Blue flame flame Satisfactory Unsatisfactory 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 UNIT DRAINING and FILTER CLEANING Drain plug 1 Close the manual gas shutoff valve with Filter Large 2 Turn off power to the unit and wait a couple of seconds Turn on again 3 Wait 30 seconds and then turn off power to the unit yet again
64. oor T H3 DV 240 Outd T H3J OS 340 dal up 36 in 4122 iif 24 in 0 5 in 2 in 914 mm 305mm 610mm 13mm 51mm 540 Outdoor T H3 OS 24 inches recommended for maintenance INCLUDED ACCESSORIES Check that these items below are included with the water heater Installation manual Temperature remote controller kit Bird screen Communication cable and owner s guide Outdoor modelsfonly Indoor modelstonlyif 540 T H3 model only Oty 1 Refer to p 31 OPTIONAL ITEMS 240 240 340 340 540 540 Model Indoor Outdoor Indoor Outdoor Indoor Outdoor T H3J DV T H3J OS T H3S DV T H3S OS T H3 DV T H3 OS Temperature remote controller 3 Pipe cover v V 3 Neutralizer kit vt vd Sidewall vent 4 terminator Hood and Wall thimble 3 PVC concentric 5 termination EM O BO ES ios IZ ES IE S 6 Non return valve 9 Page Installation Manual Installation 1 Temperature remote controller 9008172005 TM RE40 The temperature remote controller has two functions It allows the output temperature from the water heater to be adjusted within the range of 100 F to 185 F and it also works as a diagnostic tool that will give a concise error code whenever there is a problem with the unit The temperature options are 100 F 105 F 110 The pipe cover protects the plumbing pipes to F 115 F 120 F 125 F 130 F 135 F 140 F 145 the water heater fro
65. 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 120 F 50 C 240 T H3J and 340 T H3S models Computer board 120 F 50 C E D fg DEFAULT 140 F 60 C No 9 OFF No 9 ON Bank p DIPswitches 540 T H3 model Lower bank of DIPswitches Computer board 120 F 50 C E i DEFAULT 140 F 60 C Upper bank of DIPswitches on 123456 m 1 OFF L1 Hil No 5 OFF Lower bank of Z i DIPswitches ir NOTE Only change the switches with dark squares The dark squares indicate the direction the DIPswitches should be set to e DO NOT adjust the upper bank of DIPswitches for the 540 T H3 model e Turn off the power supply to the water heater before changing the DIPswitch WARNING settings 47 Page Owner s Guide Oner UIC UI FLOW The flow rate through the water heater is limited Household Flow Rates to a maximum of 6 6 GPM 25 L min for the 240 Flow rate T H3J model 8 0 GPM 30 L min for the 340 Mede ENT T H3S model and 10 0 GPM 38 L min for the 540 T H3 model Lavatory Faucet 1 0 3 8 The temperature setting along with the supply Bath Tub 40 100 152 378 temperature of the water will determine the flow Shower 2 9 toe rate output of the unit Kitchen Sink 1L5 5 6 Please refer to the temperatu
66. otor for Outdoor models Burner gasket Fan damper for Indoor models Burner window Rod holder gasket Flame rod Igniter rod Rod holder Rod cap Burner damper LP Burner damper NA Manifold gasket A Manifold gasket B Burner holder gasket N A N A 319143 505 319143 506 319143 507 319143 508 319143 509 N A 319143 510 319143 511 319143 512 319143 513 319143 018 319143 025 319143 325 319143 026 319143 060 319143 326 319143 063 N A 319143 201 319143 087 319143 328 320273 306 N A 319143 059 319143 048 N A 319143 330 319143 514 319143 515 319143 516 319143 443 319143 043 319143 031 319143 282 319143 033 319143 034 319143 517 319143 037 319143 036 319143 038 319143 518 319143 519 319143 044 319143 045 319143 032 Owner s Guide Parts List 240 340 and _ T H3J T H3S and 540 models T H3 models EK159 EK164 EK187 EK188 EK158 EK174 EK170 EK162 EK190 EK171 EK161 EK160 EKH23 EW000 EW001 EW002 EWO003 EW004 EW005 EW018 EKK31 EWOOA EW009 EKK37 EK191 EWOOD EM167 EK230 EWOOB EK192 EK181 EK182 EK109 EKK25 EKK2X EM381 EKK2V EKK2W EK193 EKKOF EKK32 EKN61 EK183 EK169 EKK2Y EKK2K EKKOG 116 117 118 119 12A 150 151 152 153 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 450 451 452 453 454 455 456 457 458 459 460 461 Description Pressure port Combustion chamber tube Gas inlet Gas inlet ring Surge bo
67. perature above 140 F 60 C 540 T H3 model only 1 The water heater must be in Stand By to increase the temperature 2 Press the HOT button to set 140 F 60 C 3 Press and hold the INFO button and the HOT button for at least 3 seconds The remote will emit a beep and change to 145 F 63 C 4 Press the HOT button to set up to 185 F 85 C TEMPERATURE TABLE OF CONTROLLER a For 240 T H3J and 340 T H3S models ES LOON OSA KOA RNS 120 258 BISON ISSN B40 EJ 40 43 45 BN 52 550 E57 EG b For 540 T H3 model Ls 100 105 110 115 120 125 130 135 140 145 150 155 160 165 175 185 ES 3 40 43 45 BN 52 SOM E57 OOM OSM OS MOS EOM MSN SOM RSS Factory setting Default 120 F DO NOT set to 185 F 85 C if you use your water heater in a recirculation system This will cause damage to the heater and void the warranty WARNING This temperature setting is available for the 540 T H3 model only 45 Page 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 Screen on the controller controller Operation Inlet water temperature First of all inlet water temperature will be displayed 1 on the controller by pressing the INFO button EX 60 F 2 Outlet water temperature will be dis
68. phone Follow the gas supplier s instructions f you cannot reach your gas supplier call the fire department Use only your hand to turn the gas valve knob Never use tools If the knob will not turn by hand don t try to repair it Call a qualified service technician Forced or attempted repair may result in a fire or explosion Do not use this water heater if any part has been under water Immediately call a qualified service technician to inspect the water heater and to replace any damaged parts OPERATING INSTRUCTIONS STOP Read the safety information above or in the Owner s Manual Turn off all electric power to the water heater Do not attempt to light the burner by hand Turn the manual gas valve located on the outside of the unit clockwise to the OFF position Wait five 5 minutes to clear out any gas If you then smell gas STOP Follow B in the safety information above on this label If you don t smell gas go to next step Turn the manual gas valve located on the outside of the unit counterclockwise to the ON position Turn on all electrical power to the water heater If the water heater will not operate follow the instructions to Turn Off Gas to water heater and call your service technician or gas supplier TO TURN OFF GAS TO APPLIANCE Turn off all electric power to the water heater if service is to be performed Turn the manual gas valve located on the outside of the unit cl
69. played on the Outlet water temperature controller by pressing the INFO button EX 120 F 3 And then water flow will be displayed on the Water flow controller by pressing the INFO button Row lom EX 3 5 GPM 4 Press the INFO button to finish information mode Unit conversion mode The remote controller has a function that can change units of temperature and flow rate from F to C and from gallon per minute to liter per minute and vice versa M nm ANE follow the procedures below Screen on Screen on the controller controller Operation 2 When ON the orange LED is lit The previous set temperature will be displayed on the screen Press the ON OFF button on the controller in 73 order to turn the controller on 1 4 Press the INFO buttons for at least 3 seconds The set temperature should now be displayed in the alternate unit of measurement When the water heater is connected with the remote controller the temperature controller will not operate temperature settings as only work for the information mode Indoor models only 46 Page Owner s Guide Normal Operation TEMPERATURE SETTINGS ON THE PCB WITHOUT REMOTE CONTROLLER There are 2 preset temperatures 120 F 50 C and 140 F 60 C 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
70. r of the parent unit will display the set temperature at the Easy Link System the controller of the child unit will not display the set temperature e Please see p 52 to 54 e Foran Easy Link System the Parent unit is always labeled 1 and all other subsequent Child units are numbered randomly e To check which numbers are assigned to which Child units push the button on the computer board of any Child unit as shown below The unit number will be displayed on the temperature controller of the Child unit and or the remote controller of the Child unit if installed Refer to p 33 to 36 Owner s Guide ERROR CODES General Theunits are self diagnostic for safety and convenience when troubleshooting e f 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 240 T H3J and 340 T H3S models 540 T H3 model the temperature controller Wi Green LED Green LED Error code indicator on the remote controller 9008172005 TM RE40 Error code on the computer board Single unit Installations Example If your unit has the 321 error code which signifies an inlet thermistor failure ndicator on the temperature controller or Remote controller 321 will be displayed on the screen in its entirety EM ERE l
71. re may cause serious accidents Conversion of this unit from natural gas to propane or vice versa will void all warranty Contact your local distributor to get the correct unit for your gas type The manufacturer is not liable for any property and or personal damage resulting from gas conversions The minimum and maximum inlet gas pressures are Gas type Inlet gas pressure Natural Gas Min 5 0 W C 1 24 kPa Max 10 5 W C 2 61 kPa Propane Min 8 0 W C 1 99 kPa Max 14 0 W C 3 48 kPa Inlet gas pressures that fall outside the range of values listed above may adversely affect the performance of the water heater These pressures are measured when the water heater is in full operation Inlet gas pressure must not exceed the above maximum values gas pressure above the specified range will cause dangerous operating conditions and damage to the unit Until testing of the main gas line supply pressure is completed ensure the gas line to the water heater is disconnected to avoid any damage to the water heater Gas connections Install a manual gas shutoff valve between the water heater and the gas supply line When the gas connections are completed it is necessary to perform a gas leak test either by applying soapy water to all gas fittings and observing for bubbles or by using a gas leak detection device The water heater and its individual shutoff valve must be disconnected from the gas supply piping system d
72. re vs gallons per EU 1 5 56 minute charts on p 62 to determine the likely flow ES ee 40 152 rates based on your local ground water temperature and your desired outlet water temperature Based on the United States Department of Energy method of testing water heater output the water Taken from UPC 2006 Unit GPM L min heater is rated for gallons per minute GPM liters per minute L min for Natural Gas and Propane Model O when raising the water temperature by 77 F Indoor 43 C from 58 F to 135 F 14 C to 57 C 240 TH3 G door 9 9 1 See the chart on the right Indoor Refer to the table to the top right for typical 340 T H3S 4 4 16 7 household plumbing fixture flow rates to determine Outdoor i Indoor what the water heater can do in a household 540 T H3 4 9 18 5 application Outdoor FREEZE PROTECTION SYSTEM This unit comes equipped with heating blocks to protect it against damages 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 In cases where power losses can occur consider the use of a backup power supply The freeze protection system will activate when the surrounding and or outside temperatures drop below 36 5 F 2 5 C For the 240 Indoor T H3J DV 340 Indoor T H3S DV and 540 Indoor T H3 DV models
73. s is recommended in the USA In Canada plastic venting must be certified to ULC S636 standards Item ENEN United States Schedule 40 PVC ANSI ASTM D1785 i PVC DWV ANSI ASTM D2665 us s sme c eee cn ete ANSI ASTM F441 E Schedule 40 ABS DWV ANSI ASTM D2661 ULC S636 Certified Polypropylene UL 1738 Materials Only PVC ANSI ASTM D2564 Pipe Cement Primer CPVC ANSI ASTM F493 ABS ANSI ASTM D2235 NOTE Do NOT Use Cellular Foam Core Pipe e The maximum length of exhaust vent piping must not exceed 70 ft 21 3 m for 3 venting which depends on the elevation where the water heater is installed and 100 ft 30 5 m for 4 venting deducting 5 ft 1 5 m 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 5 ft 1 5 m support the vent run at 3 ft 0 9 m intervals with overhead hangers Diameter Max No of Elbows Max Vertical and Horizontal Total Vent Length 3 in 76 mm 5 70 ft 21 3 m 4 in 102 mm 5 100 ft 30 5 m For each elbow added deduct 5 ft 1 5 m from max vent length Max Vertical or Horizontal Total Vent Length No of Elbows venting venting Up to 3 000 ft Up to 6 000 ft Up to 10 100 ft Up to 10 100 ft 0 70ft 21 3 m 40 ft 12 2 m 25 ft 7 6m 100 ft 30 5 m 1 65 ft 19 8 m 35 ft 10 7 m 20 ft 6 1 m 95 ft 29 0 m 2 60 ft 18 3 m 30 ft 9 1 m 15 ft 4 6 m 90 ft 27 4 m B 55 ft
74. s through non operating appliances e For detailed instructions on the common venting system refer to the WARNING instructions that are packaged with the vent parts or web site Common venting system Vent Max Vertical and DIPswitch settings Diameter Horizontal 240 Indoor T H3J DV 540 Indoor T H3 DV D h Total Vent Length L 340 Indoor T H3S DV Upper bank of DIPswitches 4 in PN 2 25 ft 7 6 m S M 2 50 ft 15 2 m 125 mm 3 20 ft 6 1 m 2 100 ft 30 5 m 3 75 ft 22 9 m a 4 50 ft 15 2 m 160 mm 5 25 ft 7 6 m 12345678910 on 22345678 6 20 ft 6 1 m OFF Ore 2 100 ft 305m No 6 ON No 7 OFF No 3 ON No 4 OFF 4 100 ft 30 5 m 8 in 5 85 ft 25 9 m 200 mm 6 65 ft 19 8 m 7 50 ft 15 2 m 8 41 ft 12 5 m 5 100 ft 30 5 m 10 in 6 100 ft 30 5 m 250 mm 7 100 ft 30 5 m 8 100 ft 30 5 m Diameters of pipes are in accordance with Centrotherm s specifications One elbow is equivalent to 5 ft 1 5 m linear length and the maximum number of elbows is 5 2 1 Page Installation Manual Installation Vent termination clearances INSIDE CORNER DETAIL Vent terminal Air supply inlet M G Area where is not permitted b zyz I LLL Se Z SSS SCA d VU 7 p Gas meter regulator Direct vent and other Other than than Direct vent vent Direct vent Clearance above grade veranda porch
75. skets must be sealed with high heat resistant silicone sealant or UL listed aluminum adhesive tape having a minimum temperature rating of 160 F For best results a vent system should be as short and straight as possible The Indoor 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 NovaVent line However the following are also UL listed manufacturers ProTech Systems Inc FasNSeal Metal Fab Inc and Heat Fab Inc Saf T Vent Follow the vent pipe manufacturer s instructions when installing the vent pipe The maximum length of exhaust vent piping must not exceed 100 ft 30 5 m deducting 5 ft 1 5 m for each elbow used in the venting system Do not use more than 5 elbows When the horizontal vent run exceeds 5 ft 1 5 m support the vent run at 3 ft 0 9 m intervals with overhead hangers Diameter Max No of Elbows Max Vertical and Horizontal Total Vent Length 4 in 102 mm 5 100 ft 30 5 m For each elbow added deduct 5 ft 1 5 m from max vent length No of Elbows Max Vertical or Horizontal Vent Length 0 100 ft 30 5 m 95 ft 29 0 m 2 90 ft 27 4 m 3 85 ft 25 9 m 4 80 ft 24 4 m 5 75 ft 22 9 m Excludes vent terminators termination elbows or rain caps 18 Page Installation Manual Direct vent and single vent Illustrations Typical in
76. stallations using stainless steel vents Horizontal Installation Vertical Installation Hanger Fire stop Sidewall vent termination The diagram above shows direct vent installations For single vent installation connect a 4 elbow directly on the intake vent collar instead of a straight pipe See the instructions below for the detail For details of the optional items refer to the Installation manual for each Optional item Regarding the clearances from the exhaust terminal to the air inlet or opening refer to p 22 to 24 Follow all vent system manufacturer s instructions and all local codes Use 4 Category III IV approved or Special BH single or double wall stainless steel vent pipe How to install stainless steel vent with the indoor models 4 vent connection for direct vent installation A 1 Connect 4 stainless steel vent TT 4 stainless stainless stee straight pipes directly on the est lt vent straight pipe exhaust intake vent collar of the water heater straight pipe Exhaust vent collar of the Indoor models Female Female 4 vent connection for single vent installation 1 Connect a 4 stainless steel vent straight pipes directly on the exhaust vent collar of the water heater 2 Connect a 4 elbow directly on the intake vent collar of the water heater W 4 stainless steel n H gt M vent straight pipe Exhaust vent coll
77. sure the remote controller does not come into contact with water or oil Do not place the remote control wiring close to other wires from other products e Do not extend the remote control wiring more than 400 ft 122 m Mounting and Wiring the Remote Controller 1 Take off the Back plate from the remote controller with a flat head screwdriver Fig A and B 2 Attach the Back plate on the wall with the two provided screws Fig B Fig A Press and twist flat head screwdriver against the cutout Fig B Back plate Attach the screws 3 1 4 inches Main body Cut out the partition with pliers Installation Manual Tighten the two Fork terminals beneath the two Remote controller terminal screws on the back of the main body Fig C 1 Cut out the inlet for the remote controller cable from the bottom of the main body Fig C 2 Place the Main body back on the Back plate with the Remote controller cable running out of the bottom inlet Fig C 1 Remote controller terminals Fig C 2 e Inlet for the remote N Two fork terminals controller cable E d p Cut out S X Remote controller cable lt How to connect the remote controller to
78. t Over 6 000 ft DRR EMBEE ORR 240 T H3J and 340 T H3S models No 3 OFF No 3 OFF No 3 ON Consult our No 4 OFF No 4 OFF No 4 OFF i No 5 OFF No 5 ON No 5 ON Technical Services on 2123456 o 123456 on 223456 TT TTE Og at 1 877 sous model CWO OMAS GARE OFF OFF 737 2840 Lower bank of DIPswitches No 2 OFF No 2 OFF No 2 ON No 3 OFF No 3 OFF No 3 OFF No 4 OFF No 4 ON No 4 ON NOTE The dark squares indicate the direction the DIPswitches should be set to 240 T H3J and 340 T H3S models 540 T H3 model Computer board Computer board Jj na nj EN A N Lt L k of DIPswitch Bank of DIPswitches SWE Dane 2 DO NOT adjust any DIPswitches on the upper bank for the 540 T H3 model WARNING 12 Page Installation Manual VENTING INSTRUCTIONS For the 240 Indoor T H3J DV 340 Indoor T H3S DV and 540 Indoor T H3 DV models General mproper venting of this appliance can result in excessive levels of carbon monoxide which can result in severe personal injury or death mproper installation can cause nausea or asphyxiation severe injury or death DANGER from carbon monoxide and flue gases poisoning Improper installation will void product warranty When installing the vent system all applicable national and local
79. tank Check valve L Cold water inlet This is a concept drawing only a Y Strainer Installation Manual Dual purpose hot water heating Domestic and Space Heating Diagrammatic layout of radiant heating and domestic water heater per Mass code All water piping should be insulated in accordance with 780 CMR Massachusetts energy code 3 inch gas exhaust vent Discharge must Cold wat a a comply with local and Automatic tempering device must be installed below state codes Cannot the top of the water heater Check valve will have be common vented as per manufacturer s 1 8 inch hole drilling with other appliances recommendations Apply correct thermal in clapper optional expansion tank size Shutoff per application valve T Tempered water to E 2 Piping loop plumbing fixtures Must o between water meet temperature Leow o g heater and fan requirements of 248 CMR Atmospheric t 3 coil shall be in vacuum 3 co compliance with breaker 9 8 248 CMR Thermostatic mixing valve Drain Water Hot water Aplus ilter Unions FT V supply and T A return to Ball p 120 VAC A heating coil Valve switch or i i lt t Check valves Isolation Heating Coil ra TA outlet used with air handler Le Shutoff valves b gt 4p gt N Shutoff valves F Check valve System installed with reverse jenem Thandie gas shutan valve acting aquastat to s
80. tap 4 Fully open the manual gas control valve installed Turn on the 120 VAC 60 Hz power supply to the water heater 6 Now you are ready to enjoy hours of endless hot water Owner s Guide Operating Safety O O o O Owner s Guide CONGRATULATIONS Congratulations and thank you for choosing our tankless wat Before use we recommend that you read through this sa carefully Please refer to the back of the manual for details ab warranty Keep this manual for future reference If you lose the manual contact the manufacturer or distributor When you call please tell us the model num serial number of your unit written on the rating plate of the heater 4 1 Page Owner s Guide 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 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 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 e Do not try to light any appliance e Do not touch any electric switch do not use any phone in your building Immediately call your gas supplier from a neighbor s
81. the vent length Vent length 240 Indoor T H3J DV 540 Indoor T H3 DV 340 Indoor T H3S DV Upper bank of DIPswitches ON DEFAULT No 6 ON No 3 ON No 7 OFF No 4 OFF on 12345678910 21 to 40 ft OFFL No 6 OFF No 3 OFF No 7 OFF No 4 OFF ON 41 to 70 ft GFE Vent length 240 Indoor T H3J DV 540 Indoor T H3 DV i 340 Indoor T H3S DV Upper bank of DIPswitches on 22345678910 on 22345678 5 to 50 ft a or ol DEFAULT No 6 ON No 3 ON No 7 OFF No 4 OFF ON 1 234 5 6 7 8 910 on 22345678 51 to 100 ft o ue n No 6 OFF No 3 OFF No 7 OFF No 4 OFF Single pipe with room air intake installation Refer to p 17 for details Set DIPswitches shown in the table below depending on the vent length 240 Indoor T H3J DV 540 Indoor T H3 DV Vent length 340 Indoor T H3S DV Upper bank of DIPswitches 68718 a 5 to 45 ft Bini DEFAULT No 6 ON No 7 OFF ON GEES 46 to 70 ft ot n No 6 OFF No 3 OFF No 7 OFF No 4 OFF 14 Page Installation Manual Installation Exhaust vent ABS PVC CPVC or polypropylene vent The Indoor models can be vented with ABS PVC CPVC or polypropylene temperature rated up to 149 F Vent material certified to ULC S636 standard
82. uring any pressure testing of that system at test pressures in excess of 1 2 psi 3 5 kPa The water heater must be isolated from the gas supply piping system by closing its individual manual shutoff valve during any pressure testing of the gas supply piping system at test pressures equal to or less than 1 2 psi 3 5 kPa Always purge the gas line of any debris and or water before connecting to the gas inlet NOTICE Size the gas pipe appropriately to supply the necessary volume of gas required for the water heater using ANSI Z223 1 NFPA 54 in the USA or CAN CSA B149 1 in Canada or local codes Otherwise flow capabilities and output temperatures will be limited Installation Manual Installation Natural Gas Supply Piping 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 240 T H3J model 180 Cubic ft hr for the 340 T H3S model and 199 Cubic ft hr for the 540 T H3 model Unit Cubic feet per hour Length a eee Diameter 10 20 30 401 sor co 70 so 90 100 125 1508 200 81 72 65 60 56 52 50 44 40 34 1 2 172 118 95 3 4 360 247 199 170 A5 137 126 117 110 104 E 83 z l T8 678 466 374 320 284 257 237 220 207 195 173 157 134 11 4 1 390 957 768 657 583 528 486 452 424 400 355 322 275 1
83. ve an adequate amount of space between the end of the drain tube and the actual drain to facilitate proper drainage Case B If a neutralizer is required installing the Neutralizer assembly 1 Connect the 1 2 FPT X 3 8 MPT Adaptor to the condensate drain port at the bottom of the water heater Connect the Neutralizer to the 3 8 MPT connection of the adaptors There is a flow direction indicator on the neutralizer Please orient the neutralizer in the proper direction Connect a 1 2 drain tube to the other end of neutralizer Leave an adequate amount of space between the end of the drain tube and the actual drain to facilitate proper drainage Condensate Condensate drain port Tes drain port 1 2 FPT x 3 8 MPT i 1 2 FPT x 3 8 Included with or 1 2 HB Neutralizer accessory I Neutralizer cartridge n M Included with bal x Neutralizer accessory ondensate gt l I Included with Neutralizer a vm Brain T drain tube Adequate space Le space Installation Manual 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
84. x plate O ring P18 NBR Black O ring P20 NBR Black Silicon ring for Outdoor models Exhaust port for Outdoor models Primary heat exchanger assembly for 240 T H3J and 340 T H3S models Primary heat exchanger assembly for 540 T H3 model Flow adjustment valve Flow sensor Bypass valve for 540 T H3 model Water inlet Inlet drain plug Inlet water filter Inlet thermistor for 240 T H3J and 340 T H3S models Inlet thermistor for 540 T H3 model Outlet thermistor for 240 T H3J and 340 T H3S models Outlet thermistor for 540 T H3 model Water outlet Outlet drain plug Heat exchanger thermistor for 540 T H3 model Hi Limit switch for 240 T H3J and 340 T H3S models Hi Limit switch for 540 T H3 model Overheat cut off fuse Pipe heater Inlet heater for Indoor models Inlet heater for Outdoor models Drain tube Inlet heater Secondary heat exchanger for Indoor models Secondary heat exchanger for Outdoor models Pipe heater fixing plate Heater fixing plate 16 Fuse fixing plate 18 Fuse fixing plate 14 O ring P4 FKM O ring P6 FKM O ring P14 FKM O ring P15 FKM O ring P16 FKM Fastener 4 11 Fastener 14 22 Fastener 16A Owner s Guide Parts List 240 340 and T H3J T H3S and 540 models T H3 models 319143 042 319143 344 319143 455 319143 342 319143 522 319143 350 319143 057 319143 523 319143 524 319143 547 319143 548 319143 463 319143 464 319143 193 319143 197

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