Takagi TM-RE10 Temperature Remote Controller - T
Contents
1. 11 12 e Electrical Connection 12 e Initial operation 13 Normal operation 13 e Fow 13 e Temperature setting 14 e Wiring diagram nn 15 e Freeze Protection Device 16 e Maintenance and Service 16 17 e Error codes 17 For your Safety 18 Danger 19 Application 20 e Space Heating 20 e Dual purpose heating 21 e Storage Tank 22 e He Circulation 22 Optional Items 23 Manifold Multi system 24 26 Component Diagram 27 30 Parts list 31 32 Output temperature Chart 33 Natural Gas Input Manifold Pressure SPECIFICATIONS Min 25 000 Btu Max 235 000 Btu LPG Input Min 25 000 Btu Max 225 000 Btu Gas Connection 34 NPT Water Connection 34 NPT Water Pressure Min 15 psi Max 150 psi Natural Gas Pressure Inlet Min 5 WC Max 10 5 WC LP Gas Pressure Inlet Min 11 WC Max 14 WC Natural 2 2 WC Propane 2 7 WC Weight 70 lbs Dimensions 23 6 x18 5 x8 9 Ignition Electronic Ignition Electrical Supply AC 120 V Check the rating plate to ensure this product matches your specifications This appliance is certified for use at altitudes from Oft to 4500ft2. test Q Sp Le Oop Q O Q A O GR TTE S a_a W TWO way valve AE trans former ll R R G G sr PRESSURE SWITCH out thermistor Wiring Diagram A wiring diagram is located on the inside front panel of the appliance Electrical Rating 120 VAC 60 Hz 0 8 A Note If any of the original wiring supplied with this appliance must be replaced it must be replaced with appliance wiring material 180c or its equivalent Wires are available through the manufacturer 15 FREEZE PROTECTION DEVICES This unit comes equipped with heating blocks to prevent freezing which can damage the heat exchanger For this freeze prevention 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 The unit has been rated for temperatures down to 5 F 15 C in a wind free environment If you install the water heater in an area that is subject to temperatures including wind chill below 5 F 15 C this will void the warranty and Takagi will not be responsible for any damage to the heat exchanger as a result of freezing In any areas subject to freezing temperatures Takagi strongly recommends the use of its back flow prevention flue damper Part No TK TVO3 to reduce the amount of cold air
3. 1 M b instantaneous Water Heater TAKAGI Installation Manual and Owner s Guide Mobius Water Heater Model T M1 Suitable for potable water heating and space heating FEATURING ENDLESS HOT WATER ON DEMAND COMPACT SPACE SAVING ENERGY CONSERVING COMPUTER CONTROLS COMPUTERIZED SAFETY NO PILOT LIGHT WARNING This product must be installed and serviced by a licensed plumber a licensed gas fitter or a professional service technician and or in accordance with all local code Improper installation and or operation or installation by an unqualified person will void the warranty WARNING Operation of this unit creates carbon monoxide gas and flue gases which can cause serious injury or death In addition if the information in this manual is not followed exactly a fire or explosion may result causing property damage personal injury or death Takagi Industrial Co USA Inc 5 Whatney Irvine CA 92618 Toll Free 888 882 5244 USA Toll Free 877 877 4953 CANADA www Takagi com CONTENTS Specification 2 Introduction 3 For your Safety 3 4 Installation 5 e General J 5 e Accessories 5 e Outdoor Installation 5 6 e Indoor Installation 6 7 e Venting Instructions 1 9 e Gas Supply Gas Pipe sizing 10 11 e Water Connection
4. 23 Heat Exchanger Fixing Plate Fon 57 Heater Freng Pate 59 CHE MC TwoWay Valve Cover 62 O ring JASO 1019 _SiionOsingM26 63 ScrewM4x14 coated MO CHE 6 EC Inlet Thermistor 231 44 5 6 47 48 49 0 51 53 54 5 6 7 59 61 62 63 64 65 67 es eme el We 7 20 Thermo couple Fixing Piate 110 iiet Fring Piate as Pressure Switch n6 Wrerode ee mama H9 Surge Absorber B eo Seew wwsxio 120 goremmmu e se Gas coupi i Fuse covor e e 404 409 C 40S Hit Y 0y 0 9JnjeJeduua 1938 M JOH NdjNO ze ge ov ev 8v gs 68 vo oz ze S8 96 ee ge ve 9 ev 8v va 99 69 v9 OL LL ve ze ce ge ge ev Sv er ve gs 6s vo ge ve ve ze se ge Ov ev Sv 9v VS ss ost s4 oz S9L 09 osk Ovi ser OEL SEL ozt sit OU oz 4 Ov 09 08 vol ozi peuinsse aq UBD azie adig sec 199 105 soJnjeJoduuo 1928 M punoJs snoueA UHM INdS 9 6 XeiN Wd9 SA 8nje1eduiea jndjno INd9 19IeM JOH 1n dino 126 MM1097
5. tankless water heater designed to supply endless hot water to your entire household and or commercial facility utilizing total efficiency The principle behind the T M1 Water Heater is simple Once you open a hot water tap water flows through the T M1 Water heater Once a minimum of 0 75 GPM is achieved the flow sensor automatically commands the computer to turn on the fan activate the electronic igniter and open the gas valves The computer monitors water temperature water flow rate and gas flow to ensure that you get the right amount of hot water at the correct hot water temperature After the burners are ignited the fire on lamp is lit The computer will modulate the gas supply valve and water flow 0 75 gallons per minute is required to turn the burners on after the burners are ignited the flow rate can be lowered to 0 6 gallons per minute to maintain the heater on It is advisable to open further the cold tap rather than decreasing the hot tap to adjust the water temperature As long as you have water gas and electricity you will get an endless flow of hot water Open a hot water tap to turn on your water heater Close the tap to turn off your water heater void i PLEASE READ THIS MANUAL CAREFULLY AND FOLLOW ALL DIRECTIONS 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 the CAN CSA B149 1 Natural Gas an
6. be connected or removed easily 3 The electrical connection requires a means for switching off the power supply 4 f you will be installing the unit in a contaminated area with a high level of dust sand flour aerosols or other contaminants they can become airborne and enter and buildup within the fan and burner causing damage to the unit The warranty will not cover damage caused to the unit due to installation in a contaminated environment that has not be converted 5 Particles from these objects may clog the air vent or reduce the functions of the rotating fan and cause improper burning of the gas Regular maintenance is recommended for these types of environment 6 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 is 4 feet from a doorway or opening to prevent exhaust from entering 7 Some chemicals used in a beauty salon may affect the flame sensor Water heater may not work properly Please consult with Takagi when the water heater is installed in a beauty salon 8 Water hardness may affect the water heater Water heater may be damaged The warranty will not cover damage caused by water quality Accessories Check that the installation manual the extension cable and the warranty card were included with the unit PARTS NAME SHAPE MANUAL COMUNICATION G CABLE OUTDOOR INSTAL
7. design only The reference to the 1 8 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 Takagi Technical Department at 888 882 5244 21 T M1 with Storage Tank Hot Out Pressure Relief Temperature Gauge Pump Option Pump Connect Timer or Aquastat Hot Water Recirculation This illustration is a concept design only The maximum flow rate through the T M1 is 9 6 GPM If it is necessary to achieve higher flow rates with full pressure for longer periods of time then it can be installed in conjunction with a storage tank A pump will be necessary to keep the storage tank water hot We suggest a high head pump of 1 12 hp or greater depending on the system Recirculation Pressure Relief Temperature Gauge Hot Water to House Cold In Hot Water Return E 5 epa Pump valve Connect Timer or Aquastat Expansion Tank This illustration is a concept design only This system will also need a high head pump of 1 12 hp or greater depending on the application situation en Optional Items 1 TM RE10 Temperature Rem
8. glycol group must not be introduced into the system when used for open loop potable water and space heating e The MOBIUS T M1 can be used to supply potable water and space heating and shall not be connected to any heating system or component s previously used with non potable water where any chemicals were added to the water heating appliances e 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 can cause severe burns instantly or death from scalds e Chemicals such as diluted Glycol can be used for radiant floor Hydro fan coil air or Baseboard heating only Basic System Drawings and Schematics Pressure Relief Heating application only Air Separator a Pu Temperature Ronn et Timer j Gau or Aquastat dd i A Expansion Tank YAA Radiant Hydro or Baseboard Make up Water Warning This illustration is for concept only There are a wide variety of variations to the application of controls and equipment presented applications Designers must add all necessary safety and auxiliary equipment to conform to code requirements and design practice For more details contact Technical Department at 888 882 5244 20 Dual purpose hot water heating Domestic and Space Heating Diagram
9. 1 370m in accordance to the latest CAN CGA 2 17 High Altitude Installation procedures at normal manifold pressure 2 2 W C Natural Gas Do not alter the orifice jets or gas supply pressure At altitudes of 4500ft to 5 000ft 1524m lower the manifold pressure to 2 0 W C Natural Gas At 5000ft to 6000ft 1 829m lower the manifold pressure to 1 9 W C Natural Gas For elevations above 6000ft or for specific instructions on how to lower the manifold pressure please call the Takagi office INTRODUCTION FOR YOUR SAFETY The installer is responsible for the correct installation of your Mobius T M1 Water Heater Installation and service must be performed by a qualified installer for This manual provides information necessary for the installation operation and maintenance of the Model T M1 water heater This unit includes a fan enabling sidewall power venting and an advanced electronic ignition system example a licensed plumber or gas fitter otherwise the warranty by Takagi will be The model description is listed on the rating plate which is attached to the front cover 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 with Takagi or its local representative Experiences have shown that most operating problems are caused by improper installation The T M1 Water Heater is an instantaneous
10. Capacity of Propane LP Gas Based on 11 WC supply pressure at a 1 0 WC pressure drop kBTU of Propane Length 10 20 30 40 50 60 70 80 90 100 125 150 200 1921 1260 WATER CONNECTIONS FOR YOUR SAFETY READ BEFORE OPERATING 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 All pipes pipe fittings valves and other components including soldering materials must be suitable for potable water systems A manual shut off valve must be installed on the cold water inlet to the water heater between the main water supply line and the T M1 In addition a manual shut off valve is also recommended on the hot water outlet of the unit If the T M1 is installed within or subjected to a closed loop water system such as one having an anti backflow device in the cold water supply line a thermal expansion tank must be installed Contact the water supplier or local plumbing inspector on how to control this situation After installation of the water heater is complete purge the water line to remove all the debris and air from the line Failure to do so may cause damage to the heater There is a wire mesh filter within the cold inlet to trap debris from entering your heater This will need to be cleaned periodically to maintain optimum flow Unit Draini
11. LATION 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 NFPZ 54 in the USA or the CAN CSA B149 1 Natural gas and Propane installation Code in Canada The outdoor vent cap must be used when unit is installed outdoor Takagi recommends the use of its part No TK TVO6 When installed outdoors the T M1 water heater shall be wall mounted only Locate the water heater in an open unroofed area and maintain the following minimum clearances Outdoor Installation Service Clearances Piping side Bottom Front Maintenance space Back of heater Top of heater Side of heater WARNING Do not install this water heater under an overhang less than 3 feet from its top or eaves The area under an overhang must be open to three sides WARNING Do not have the vent terminal pointing toward any opening into a building Do not locate your heater in a pit or location where gas and water can accumulate WARNING Do not install the heater where water debris or flammable vapors may get into the flue terminal This may cause damage to the heater and void the warranty WARNING Do not install the water heater vent terminator within 4 feet in the USA of any air intake or building opening and with in 3 feet in Canada of any air intake or building opening Refer to Page 9 INDOOR INSTALLATION When installed indoors the T M1 water heater shall be locate
12. a qualified service technician Force or attempted repair may result in a fire or explosion due to gas leaks Be sure to check next to the bottom of the unit because some gases are heavier than air and may settle towards the floor CAUTION IF YOU SMELL GAS 1 Do not try to start the water heater 2 Do not touch any electric switch do not use any phone in your building 3 Immediately call your gas supplier from a neighbors phone Follow the gas supplier s instructions 4 f you cannot reach your gas supplier call the fire department This water heater does not have a pilot light It is equipped with an electronic ignition device which automatically lights the burner Do not try to light the burner manually Check for proper venting and combustible air to the heater Purge the gas and water lines to remove any air pocket 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 parts that have been under water Once the above checks have been completed follow these steps to turn on your unit 1 Close the manual gas control valve located on the gas line 2 Fully open the manual water control valve on the water supply line 3 Open a hot water tap to verify that water is flowing to that tap Then close the hot water tap 4 Fully open the manual gas control valve installed 5 Turn on the 120 volt 60 Hz powe
13. at 3 ft intervals with overhead hangers e Slope the vent run downwards toward the vent terminator at a rate of 4 per foot Vent Termination A sidewall vent terminator must be used when the water heater is vented through a sidewall Takagi recommends the use of its part No TK TV01 The vent terminator provides a means of installing vent pipe through the building wall and must be located in accordance with ANSI Z223 1 NFPA 54 or in Canada with CAN CSA B149 1 and local applicable codes Locate the vent terminator so that it cannot be blocked by snow Most codes require that the terminator be at least 12 inches above grade but the installer may determine if it should be higher depending on the job site condition and applicable codes WARNING Improper installation can cause nausea or asphyxiation severe injury or death from carbon monoxide and flue gases poisoning Improper installation will void product warranty For high altitude installation above 4 500 feet contact Takagi on how to handle this situation Rain cap Condensation drain C b Install according to The exhaust goes to the roof local code C TK TVO3 Back flow Loy DP ODE prevention General rules for venting the T M1 water heater are 1 Place the water heater as clos
14. atic Layout of Radiant Heating and Domestic Water Heater Cold Inlet l Check Valve Will S e i Apply Correct Thermal Expansion Shut Off Valve Have 1 8 Hole in orig sisi Only age orreet TY al Expansi n u Valve Tie to Location approved by Tank Size Per Application x Pressure y ap cid Local Codes and Must Meet BTU y Ga une Ba p EE Rating of Takagi Model Used Greed Water IN L o _ Atmospheric nn bg X C 7 Vacuum Breaker 4 Gas Direct Vent Discharge Must EDT v 7 2 Comply with Local and State Codes E hermometer AA Ft Can Not Be Common Vented with Thermostatic Io Z REC ADNISRCES Z Mixing Valve D m 64 E E Check Valves Takagi Water Filter Rad ant Hot Water Outlet Shut Off Valves 7 Drain Plug P ane K Cold Water Inlet E Check Valve Pump Must Be Sized Properly With Each Application Fump Shall Run 60 Seconds Gas Inlet on Dons Fd SN 120 VAC Switch or Outlet Maximum allowable T Handle Gas Shut Off Valve ji distance of 60 Ft from water je heater and heating panel i 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 Warning 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 Warning This illustration is a concept
15. ation Household Flow Rates penance use nt 1 0 Taken from UPC 1997 WARNING Hot Water Heater temperatures over 125 F can cause severe burns instantly or death from scalding The outlet hot water temperature of the MOBIUS T M1 water heater is factory set at 122 F Feel the water temperature before bathing or showering Do not leave children the disabled or the elderly unattended as they are at the highest risk of being scalded Temperature limiting valves are available ask professional person Temperature Setting DEFAULT Only change black switches Do not adjust any another switches _14 TEMPERATURE SETTINGS There are 4 preset temperatures that you can select from by adjusting the dipswitch settings on the computer board The temperature has been preset at the factory to122 F 50 C The computer will electronically control this temperature At a fixture mix cold water with hot to get the water temperature you desire If you desire a hot water temperature other than the 4 preset settings please purchase the optional temperature remote controller part No TM RE10 With this optional TM RE10 you can set the temperature from 99 F to 182 F Please carefully read the instructions prior to installing the TM RE10 as failure to do so could damage the temperature controller and or the water heater which will void the warranty Hot Water Output Te
16. awing make up air from inside the from outside building from other the building rooms within Max 235 000 15 7 Sq IN 235 Sq IN BTU Top of heater Side of heater Combustible Air Supplied by Mechanical fan or Make up air device The T M1 water heater is equipped with a combustible air sensor that will shut off the unit when inadequate combustible air supply to unit is detected If a mechanical fan or make up air device is used to supply air to the water heater or utility room the installer should make sure it does not create drafts which could cause nuisance shutdowns If a blower is necessary to provide adequate combustion air to the water heater a switch or equivalent device must be wired interlocked with the water heater control circuit or other proper devices to prevent the water heater from firing unless the blower is operating VENTING INSTRUCTIONS General WARNING Improper venting of this appliance can result in excessive levels of carbon monoxide which can result in severe personal injury or death This water heater must be vented in accordance with the section Venting of Equipment of the latest edition of the Natural Fuel Gas Code ANSI Z223 1 and all applicable local building codes In Canada follow section 7 of the CAN CSA B149 1 Natural Gas and Propane Installation Code Exhaust Vent This is a Category lll appliance and must be vented accordingly The vent system must be sealed air tig
17. d 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 Canada Electrical Code Part 1 in Canada 3 Carefully plan where you intend to install your T M1 Water Heater Ensure that your heater will have enough combustible air and proper ventilation and locate your heater where water leakage will not do damage to surrounding areas If there is a possibility of water damage install a suitable drain pan under the unit which will not restrict combustible airflow 4 Check the rating plate for the correct gas type gas pressure water pressure and electrical rating If this unit does not match your requirements do not install Rating plate 5 If any problem should occur turn off all hot water taps and turn off the gas Then calla trained technician or the Gas Company or the manufacturer 6 10 WARNING Do not disconnect the electrical supply if the ambient temperature will drop below freezing The Freeze Prevention Device only works if the unit has electrical power The Freeze Prevention Device is rated for temperatures down to 5 F 15 C in a wind free environment Refer to the section on Winterizing and the Freeze Prevention Device for more information The Warranty will not be covered if the heat exchanger is damaged due to freezing WARNING Wate
18. d flow capabilities If the water doesnt seem hot enough compare the flow and temperature that is being attained to the T M1 flow vs temperature chart See flow chart on the last page of this manual If the unit is not performing according to the chart first check that the gas supply pipe is sized properly and that the gas pressure is within the required range If the gas line is sized properly check the plumbing for mixing valves thermostatic valves anti scald devices single handled faucets with built in temperature or pressure compensators valves and hot and cold crossed connections lf the unit is performing in accordance with the flow chart it may be undersized for the application If the unit is performing according to the chart the output temperature can be adjusted using the TM HE10 or the dipswitches on the unit It Takes Too Long to Get Hot Water The T M1 takes three seconds to ignite and three more seconds to heat the incoming ground water up to the set temperature The time it takes to deliver hot water from the T M1 to your fixtures depends on the length of piping between the two The longer the distance the more time it will take If you would like to receive hot water to your fixtures quicker you may want to consider a hot water recirculation system Wrong Gas Type Mixing Thermistor Fail E Insufficient Gas en m Abnormal Gas Solenoid Supply Thermocouple Valve Ignition failed CNE Flow Sensor Abnorma
19. d in an area to maintain the following minimum clearances around the unit Indoor Installation Service Clearances The diagram below details the required clearances around the unit Pd D Za Ra d g m NM pe Dr Combustion Air Supply The water heater location must provide enough air for proper combustion and ventilation of the surrounding area See the latest edition of ANSI Standard Z223 1 or any applicable local codes In general these requirements specify that if the unit is installed in a confined space there must be a permanent air supply opening Air Supply from Outside Building When combustion air is supplied from outside the building an opening communicating directly with the outside should have a minimum free area of one square inch per 15 000 BTUH input of the total input rating of water heater in the enclosed area Air Supply from Inside Building When combustion air is supplied from inside the building an opening communicating with the rest of the dwelling should have a minimum free area of one square inch per 1000 BTUH input of the total input rating of water heater in the enclosed area These openings should never be less than 100 sq in Minimum recommended air supply opening size for water heater Piping side Bottom Front Maintenance space Back of heater Water heater When drawing make up air When dr
20. diagram e A green screw is provided in the junction box for grounding connection MAINTENANCE AND SERVICE WARNING Turn off the electrical power supply and close the manual gas control valve and the manual water control valve before servicing Do this immediately after installation 1 Clean the cold water inlet filter figure below CU 2 Be sure that all openings for combustion and ventilation air are not blocked Check that the exhaust vent pipe is not blocked Check the gas pressure Keep the area around the water heater clear Remove any combustible materials gasoline or any flammable vapors and liquids press 09 The unit should be checked once a year or as necessary by a licensed technician If repairs are needed any repairs should be done by a licensed technician The following systems and parts should be checked at least once a year 1 Venting system 2 Burner 3 Manual operation of the pressure relief valve to ensure correct operation 4 Periodic cleaning of the water filter figure above 5 Heat exchanger Remove the thermistor and check for a mineral coating A mineral coating on the thermistor requires flushing the heat exchanger with a de scaling solution Scale build up will void your warranty and shorten the life of your water heater Common Trouble Shooting The T M1 can burn gas at a maximum input rate of 235 000 BTUH This puts a limit on the possible output temperature an
21. e as possible to the vent terminator 2 The vent collar of the water heater must be fastened directly to an unobstructed vent pipe 3 Do not weld the vent pipe to the water heater collar 4 The weight of the vent stack must not rest on the water heater o he vent must be easily removable from the top of the water heater for normal service and inspection of the unit 6 The water heater vent must not be connected to any other gas appliance or vent stack 7 Avoid locating the water heater vent terminator near any air intake devices or air conditioning units 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 8 Avoid using an oversized vent pipe or using extremely long runs of the pipe Regarding the clearance from the terminator to the air inlet or opening refer to the next page Install a condensation drain in the venting Follow the vent system to vent manufacture s instruction and local code Do not common vent or connect any vent of appliance to the vent Use the 4 category lll Vent pipe approved single wall stainless steel vent pipe vent termina GO Air supply inlet N Area where is not permitted L IS PIPA Do IATA L TEE EL DILL TE ES a e LUD ANS J gt 72 Gas meter regulator w vZ N C 4 3 4 gt Uo C Q Canadas ea vent and other than Direct Vent c p
22. ee than Direct Vent Clearance above grade veranda porch 4 feet from below or m to window or door that may be 3 feet at side opening 1 foot PENES from above em above opening _ Clearance to permanently closed window Vertical clearance to ventilated soffit located above the vent terminator within a horizontal distance of 2 feet 61cm from the center line of the terminator E Clearance to unventilated soffit o Geerance to de comer E EE EL G Clearance to inside corner D AN extended above meter regulator assembly _ Clearance to service regulator vent outlet 3feet i Clearance to non mechanical air supply inlet EE 4 feet from below or J to building or the combustion air inlet to any 3 feet 1 foot side opening 1 foot other application from above opening K Clearance to mechanical air supply inlet 6feet Sfeet 3feet Clearance above paved sidewalk or paved L driveway located on public property MEA Cee M Clearance under veranda porch deck or balcony For clearances not specified in ANSI Z223 1 NFPA 54 or CAN CSA B149 1 please use clearances in accordance with local installation codes and the requirement of the gas supplier GAS SUPPLY AND GAS PIPE SIZING 1 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 clockwise to the off pos
23. entering through the exhaust venting when the water heater is off If you will not be using your heater for a long period of time or if the temperatures including the wind chill will drop below 5 F 15 C turn off your heater and drain the unit of water see Unit Draining amp Filter Cleaning section above for draining instructions This will keep your unit from freezing and being damaged For indoor installation in areas where the temperature will be well below freezing for extended periods of time use the extension cable which is AWG18 to relocate the internal thermostat located on the fan motor to the outdoors This will sense the ambient air temperature and turn on the internal heater blocks on to prevent the heat exchanger from freezing CAUTION Only the pipes within the water heater are protected by the anti freeze devices on the T M1 Any hot or cold water pipes located outside of the unit will not be protected Properly protect and insulate these pipes from freezing CAUTION Label all wires prior to disconnection when servicing controls Wiring error can cause improper and dangerous operation Verify proper operation after servicing The MOBIUS T M1 water heater requires an electrical power supply from 120 VAC 60 Hz circuit and be properly grounded 16 e A means for switching on off the 120 VAC power supply must be provided for service reasons e Wire the heater exactly as shown in the wiring
24. et and cold inlet connections to the T M1 Water Heater This will not activate the water heater Pressure Relief Valve The MOBIUS T M1 has a high temperature shut off 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 code The discharge capacity must be at least 235 000 BTU hr and rated for 150 psi The discharge piping for the pressure relief valve must be directed so that the hot water cannot splash on anyone or on nearby equipment Attach the discharge tube to the pressure relief valve and run the end of the tube to within 6 from the floor This discharge tube must allow free and complete drainage without any restrictions If the pressure relief valve installed on the T M1 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 Fressure Cold inlet Relief Valve 12 ELECTRICAL CONNECTIONS WARNING Folow the electrical code requirements of the local authority having jurisdiction In the absence of such requirements follow the latest edition
25. fter the burners are ignited the fire on lamp is lit The computer will modulate the gas supply valve and water flow 0 75 gallons per minute is required to turn the burners on after the burners are ignited the flow rate can be lowered to 0 6 gallons per minute to maintain the heater on It is advisable to increase the cold tap rather than decreasing the hot tap to adjust the water temperature As long as you have water gas and electricity you will get an endless flow of hot water Open a hot water tap to turn on your water heater Close the tap to turn off your water heater FLAME DETECTOR HI LIMIT SWITCH Vigne WIRE THERMO COUPLE V LONER BURNER HIGHER BURNER IGNITER x mom ne nn m VALVE BY PASS VALVE Y FLOW SENSOR POWER FAN ADJUST vate NN THERMISTER FREEZE NN ik 1 SOLENOID GAS VALVE PROPORTIONAL VALVE MAIN GAS VALVE DRAIN PLUG ic GFI GAS IN WATER OUT IN WATER FILTER HIGH TEMP CUT OFF 2 SOLENOID GAS VALVE if SOLENOID GAS VALVE INSTALLATION GENERAL All gas water heaters require careful and correct installation to ensure safe and efficient operation This manual must be followed exactly Read the For Your Safety section at the beginning of this manual 1 The gas regulator is preset at the factory it is computer controlled and should not need adjustment 2 Maintain proper space for servicing Install the unit so that it can
26. ht All seams and joints must be sealed with high heat resistant silicone sealant or UL listed aluminum adhesive tape having a minimum temperature rating of 350 F For best results a vent system should be as short and straight as possible This unit requires 4 Category lll approved single wall stainless steel vent pipe or any other Category lll approved non combustible corrosion resistant material The following are UL listed manufacturers ProTech Systems Inc FasNSeal Flex L Inc Z Flex Inc Z Vent III and Heat Fab Inc Saf T Vent Follow the vent pipe manufacturer s instructions when installing the vent pipe Do not common vent this appliance with any other vented appliance The maximum length of exhaust vent piping must not exceed 35 ft deducting 5 ft for each elbow used in the venting system Do not use more than 3 elbows Max Vertical or Horizontal run in Elbow Length 3 Ea For each elbow added deduct 5 ft from max Vent length Max Vertical or Horizontal Length Max No of Diam eter No of Elbows When installing the vent system all applicable national and local 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 applicable national and local codes When the horizontal vent run exceeds 5 ft the following criteria must be observed e Support the vent run
27. ildren 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 retailer or manufacturer WARNING The outlet hot water temperature of the T M1 water heater is factory set at 122 F WARNING Use this heater at your own risk The set outlet water temperature can cause severe burns instantly or death from scalds Test the water before bathing or showering Do not leave children or the infirm without supervised DANGER Hot Water Heater temperature over 125 F can cause severe burns instantly or death from scalding Children disabled and elderly are at the highest risk of being scalded Feel water temperature before bathing or showering Temperature limiting valves are available ask professional person WARNING California Proposition 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 19 Applications Space Heating Applications The T M1 can be used for potable hot water heating applications as well as space heating applications BEEN WARNING IS e Toxic chemicals used in boiler treatments such as alcohol glycerol and
28. ill be ON also w 25 Pump Connection A Not remove Store and Re cir jumper Normal pump re circulation control If operation switch of RE20 is ON Pump control port is always turned on The water in piping is circulated and temperature is kept constant B Remove Re cir jumper Instant re circulation control If the operation switch of RE20 is ON when it is not necessary to burn the units Pump control port will be turned OFF the time with water temperature near setting temperature in the pipe of heat exchanger and Only when required Pump control port turns ON and a circulation pump is made to operate A circulation pump is turned on for about 1 minute every 30 minutes and it judges whether working is required According to open air temperature or construction conditions even if 30 minutes do not pass Pump control port may turn on C Remove Store jumper Storage tank re circulation control If the operation switch of RE20 is turned on the time with water temperature near setting temperature in a pipe and when it is not necessary to burn units slight flow adjustment valve will be closed compulsorily and circulation flow rate will be reduced A circulation pump is always ON D Remove Store and Re cir jumper Save energy re circulation Although it is the same as that of Instant re circulation control returned water temperature in the pipe is set to 122 F It is effecti
29. ition FOR YOUR SAFETY READ BEFORE OPERATING A This water heater does not have a pilot It is equipped with an electronic ignition device that automatically lights the burner Do not try to light the burner manually BEFORE OPERATING check all around the water heater area for gas leaks Be sure to check next to the floor as some gases are heavier than air and will settle on the floor Use only your hand to turn the gas valve knob Never use tools If the knob will not turn by hand do not attempt to repair it Call a qualified service technician Force or attempted repair may result in a fire or explosion WARNING Conversion of this unit from natural gas to propane or propane to natural gas cannot be done in the field Contact your local distributor to get the correct unit for your gas type Conversion done by anyone other than the manufacturer will void all warranty 10 Check that the type of gas matches the rating plate located on the cover of your water heater The minimum and maximum inlet gas pressures are Natural Gas Min 5 WC Max 10 5 WC Min 11 WC Max 14 WC Gas pressure below this specified range for the T M1 and or insufficient gas volume will adversely affect performance 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
30. l Main Gas Valve The T M1 Will Not Initiate First check the flow rate through the unit If the flow is less than 75 GPM the unit will not initiate Check the filter for any debris or damage If you have installed a combination system a T M1 doing both domestic hot water and space heating completely isolate the heating system temporarily to ensure flow is not backfeeding through your heating system gt ir ad the domestic water by passing the M1 If neither of those remedies start the unit press the lower green button marked test off on the GFCI inside the unit If the red light above it does not come on there is a problem with the electrical supply to the unit If that red light does come on hit the reset on button and open a hot water faucet to re try the unit If the problem persists contact Takagi for instructions ERROR CODES All Takagi units are self diagnostic for safety and convenience when trouble shooting If there is a problem with the installation or the unit it will display a numerical error code on the TM RE10 if installed or at the bottom left corner of the computer board to communicate the source of the problem Consult the following chart for the cause of an error code The T M1 consists of five major control operations Temperature control Gas control Water control Burner Control and Main computer control Abnormal Computer Board mT Problem Trouble 141 Hi Limi
31. l load recommended for multi system for the purpose of maintenance Multi System Main Multi System Controller TM RE20 and Temperature Remote Controller TM RE10 wiring Detail Wiring T MI Comunications cables are inside Box for TM RE20 TM RE10 Cable can be use above 18 gage wire and up to 250 ft Wire No 201 Male Adapter and No 202 Female Adapter 24 For TM RE10 Port Use 18 Gage Wire No Polarity n m m AB AA A DA 22 It has four Ports Each port can connect up to five T M1 No Polarity This connects 201 connecter in the first T M1 LP or Natural Gas Please don t change these switch Factory already set it correctly When unit is firing this RED LED will be ON L U SERRA aAA For Single or Multi mode JUMP cable For Multi mode permanently pull out To switch to Multi mode this jump cable has to be removed from the T M1 computer board permanently but please keep this jump connector safety stored for future maintenance this jumper is located behind the do not remove label E L A 68 1 Ms SE 20 LTR A Ne p a a wc Error signal LED this LED shows for unit error also it will show on RE 10 and RE20 Error codes are Error Code section in this Installation Manual il NU o na Standby Light with Green LED ON light mean Unit is ready to fire When Unit is ON upper RED LED w
32. mperature Setting With the MOBIUS T M1 Water Heater the output hot water temperature can be adjusted either manually from the main computer board s dipswitches or with the optional remote controller Part TM RE10 from 99 F to 182 F The dipswitches can set four hot water output temperatures 113 F 122 F 140 F and 182 F the factory set temperature is 122 F could damage the temperature controller and or the water heater which will void the warranty be 7 is a n ke R Tr s gt fuse Wiring Diagram transformer SA LA C Be A HOE AC120V o oo IN GOHZ c c Sal ee E Neutra cu ae 2 90 E fuse Gu ue be E f lame Fo ground oe e lle defector ue X x ground Junction box V C E N zr _ O JE BL q BK E E P oc E IO 3 8 C W W o a D R RED e ot G st gt O e L So Pg P PURPLE i wo z S O ORANGE W BK SI D D G GREEN E lt BR BROWN W BK Im BL BLUE C E A Y YELLOW GO OO L ESI LP E 2 E ji N C N 5C 1 e L3 ground E Bk gt BK W C UU 0000 lt 0 O Da a oO N ps UJ A burning LED over heat cut off fuse BL proportional i R en O Bc cl SV3 O O V mode display operating LED
33. ng amp Filter Cleaning Procedures To drain your unit please follow these instructions carefully 1 Turn off the power supply to the T M1 Water Heater 2 Close the manual gas shut off valve located on the gas supply line 3 Close the manual water shut off valve located on the water supply line 4 Open all hot water taps in the house Bathroom kitchen laundry room etc When the residual water flow has ceased close all hot water taps 5 Have a bucket or pan to catch the water from the units drain plugs Remove the drain plugs to drain all the water out of the unit 6 Wait a few minutes to ensure all water has drained from unit 7 At this time please check the water filter located within the cold inlet With a tiny brush clean the water filter of any debris which may have accumulated and reinsert the filter back into the cold water inlet 8 Securely screw the drain plugs back into place Hand tighten only Allee To re start your heater follow these steps 1 Make sure all hot water taps are closed and the drain plugs are securely attached 2 Purge the water line of debris 3 Open the manual water shut off valve located on the water supply line 4 Open all the hot water taps to verify water flows to the taps Then close the hot water taps 5 Open the manual gas shut off valve located on the gas supply line 6 Turn on the power supply to the T M1 Water Heater Note Do not reverse the hot outl
34. of the National Electrical Code ANSI NFPA 70 in the U S or the latest edition of CSA C22 1 Canadian Electrical Code Part 1 in Canada The heater must be electrically grounded Do not attach the ground wire to either the gas or the water piping Plastic pipe or dielectric unions may isolate the water heater electrically CAUTION When servicing or replacing parts within the T M1 label all wires prior to disconnection to facilitate an easy and error free reconnection Wiring errors can cause improper and dangerous operation Verify proper operation after servicing The MOBIUS T M1 water heater requires AC 120V 60 Hz electrical power supply that is properly grounded e An on off switch controlling the main power to the T M1 must be provided for service reasons e Connect the power supply to the T M1 exactly as shown in the wiring diagram A green screw is provided in the junction box to ground the connection Junction Box eT N Green Screw oe i Wiring diagrams are also located on the inside panel of the appliance INITIAL OPERATION For your safety please read before operating the unit for the first time Once you have properly installed the unit and before firing it for the first time check the gas and water connections for leaks Open the main gas supply valve to the unit using only your hand to avoid any spark Never use tools If the knob will not turn by hand do not try to force it call
35. ote Controller The Temperature Controller has two functions It allows the output temperature from the T M1 to be adjusted within the range of 99 F to 182 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 99 F 100 F 102 104 F 106 108 F 109 111 F 113 115 117 122 131 F 140 F 158 F and 167 F or 182 F See the trouble shooting section for information on possible error codes TM RE10 Remote 3 TK TV03 Vent Damper The TK TVO3 Vent Damper prevents the backflow of air through the exhaust vent This is a CSA tested Takagi component This helps prevent harmful exhaust gases from entering the home as well as helping to prevent the unit from freezing in areas where cold air can be blown or drawn into the exhaust system Install this vent damper in accordance with Takagi s installation instructions and any applicable codes 5 TM RE20 Multi system controller pigi Qs The TM RE20 is for multi system controller of T M1 This can control maximum 20 T M1 which mean is from 25 000 BTU to 4 700 000 BTU And it also works as a diagnostic tool that will give a concise error code whenever there is a problem with the unit When TM RE2O is used it needs TM RE10 2 TK TVO1 Vent Terminator This terminator can be used where a T M1 is going to be vented out through a wall This is a CSA tes
36. r supply to the MOBIUS T M1 water heater 6 Now you are ready to enjoy hours of endless hot water EL Normal Operation To Turn on Your MOBIUS T M1 water heater 1 Open a hot water tap 2 Burners ignite Fire On lamp is lit on A el EA LA I ge a zT Lame is lit 3 Mix cold water with the hot to get the correct temperature water Nc gt se EN E I To Turn off your Mobius water heater le Close the hot water tap f E CEA X X NIS J ng yes Aog doe Le Tes Ord Fire On lamp extinguishes FLOW The flow rate through the MOBIUS T M1 is limited to a maximum of 9 6 GPM The temperature setting along with the supply temperature of the water will determine the flow rate output of the unit Please refer to the temperature gallons per minute chart at the back of this manual to determine the likely flow rates based on your local ground water temperature and your desired outlet water temperature combination Based on the United States Department of Energy method of testing water heater output the T M1 is rated for 300 gallons per hour GPH or 5 0 gallons per minute GPM when raising the water temperature by 77 F for example from 43 F to 120 F Refer to the following chart of typical household plumbing fixture flow rates to determine what the MOBIUS T M1 can do in a household applic
37. r temperatures over 125 F can cause severe burns instantly or death from scalding The water temperature is set at 122 F 50 C from the factory to minimize any scalding risk Before bathing or showering always check the water temperature WARNING Do not use this appliance if any part has been in contact with or been immersed water Immediately call a trained technician to inspect and or service the unit if necessary WARNING Do not store or use gasoline or other flammables vapors or liquids in the vicinity of this appliance WARNING Do not reverse the water and or gas connections as this will damage the gas valves and can cause severe injury or death Following the diagram below when installing your water heater T x nn ar Pressure Cold inlet Relief Valve GENERAL The T M1 Water Heater is an instantaneous tankless water heater designed to supply endless hot water to your entire household and or commercial facility utilizing total efficiency The principle behind the T M1 Water Heater is simple Once you open a hot water tap water flows through the T M1 Water heater Once a minimum of 0 75 GPM is achieved the flow sensor automatically commands the computer to turn on the fan activate the electronic igniter and open the gas valves The computer monitors water temperature water flow rate and gas flow to insure that you get the right amount of hot water at the correct hot water temperature A
38. t Switch Trip Abnormal Two Way Temperature Remote Valve control Trouble Vent Pipe E Abnormal Fan Motor Li Multi system Controller 311 Output Thermistor Abnormal Output Adjust Abnormal Burning Fail Valve EN ui m Abnormal Bypass Valve 17 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 e mmediately call your gas supplier from a neighbor s phone Follow the gas supplier s instructions e 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 Force or attempted repair may result in a fire of 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
39. ted Takagi component Connect the Category Ill stainless steel vent pipe from the top of the unit to the backside of this terminator to exhaust flue gases through the wall without a thimble Install this vent terminator in accordance with Takagi s installation instructions and any applicable codes 4 TK TV06 Vent Cap The TK TVO6 Vent Cap is for outdoor installation with the T M1 water heater The cap is installed on the top of the unit instead of connecting an exhaust vent pipe The cap will prevent any debris that might be in the environment from entering the unit and causing damage or a fire hazard as well as preventing rain or other weather from entering the unit 23 Manifold Multi System Application for Large Volume MOBIUS Water Heater has full capability of manifolding multi systems with Multi System Computer Control Part TM RE20 and Part TM RE10 This Multi System Computer Controller you can manifold from 2 units to 20 units for commercial and residential application with each computer controller One computer Part TM RE20 system can make from 25 000 BTU to 4 7 Million BTU system with fully automatic modulation for large applications MOBIUS Water Heater Model T M1 Cold In 1 e Electric Wiring MOBIUS Water Heater Model T M1 Electrical Load Maximum 0 8 A 120V per Unit Individual cut off switch even though units have very low electrica
40. the main gas line supply pressure is completed ensure the gas line to the T M1 is disconnected to avoid any damage to the water heater Size the gas pipe appropriately to supply the necessary volume of gas required for the T M1 235 000 BTUH using ANSI233 1 NAPA 54 in the USA or CAN CSA B149 1 in Canada or local codes Install a manual gas shut off valve between the T M1 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 Always purge the gas line of any debris before connecting to the heater gas inlet Pipe Sizing Example This table below is for Natural gas piping supply straight to the water heater without any tabs to other gas appliances Recommend Gas pipe size for T M1 Water Heater Example for NG Distance from Gas Meter Pipe Size inches U 11 20 70 0 200 1 1 4 Natural Gas Supply Piping Maximum Capacity of Natural Gas Based on a 0 60 specific gravity at a 0 5 WC pressure drop kB TU of Natural Gas Length 10 20 30 40 50 60 70 80 90 100 125 150 200 372 255 205 175 156 142 130 121 114 107 95 86 74 1 1441 990 795 680 603 546 503 468 439 415 367 332 285 1576 1450 960 822 Propane LP Gas Supply Piping Maximum
41. to replace any damaged parts OPERATING INSTRUCTIONS STOP Read the safety information above or in the Owners Manual Turn off all electric power to the water heater Do not attempt to light the burner by hand Turn the gas manual gas valve located on the outside of the unit clockwise O 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 counter clockwise U 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 EN TO TURN OFF GAS TO APPLIANCE 1 Turn off all electric power to the water heater if service is to be performed 2 Turn the manual gas valve located on the outside of the unit clockwise O to the off position 18 DANGER FLAMMABLES Vapors from flammable liquids will explode and catch fire causing death or severe burns Do not use or store flammable products such as gasoline solvents or adhesives in the same room or area near the water heater Keep flammable products Vapors 1 Far away from heater 1 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 ch
42. ve only when the set temperature of TM RE10 is more than 122 F Pump control U Port pr j Power MRE i HOL IM RE20 A supply I I gt AC120V ACZZ0V GUC AC120V RELAY m Electoromasinetic swi tch ERMAL AY E Store and Re cir jumper Pump Firing System Power on TM RE20 TM RE10 will show Number 0000 for 20 to 25 second and then power on the each T M1 Next the RE 10 will show a default temperature setting of 108F this can be changed with HOT and COLD button located on the TM RE10 If you press the ON OFF button this time RE10 shows current TIME that can be changed refer to the instructions provided with the TM RE10 After setting of the TIME press the ON OFF button RE 10 will show current Temperature setting 26 Component Diagram Os gt s Glee NA E me Ac et E L Parts List a Seow W M4xt0 97 FowAdustment Vave 4 Back uardPand 38 omge 5 Transtommer 39 Bypass unction oe Transtormer 4 samo 8 dunetionBoxCover 42 Water Outlet Connection 9 SewMix8 e SoewMaxia Sound insulation 44 Ming Thermistor Weather Protection Panel Drain Plug panga 4 Mixing Connection aspe 4 DanPugBand Heat Exchanger Assembly 49 WaerOuet Screw W Max 12 En 53 u 54 5 ej C1 Bypass Flow Adjustment Valve
Download Pdf Manuals
Related Search