Takagi T-M50, Installation Manual And Owner'S Manual

Page 1: ...roduct must be installed and serviced by a licensed plumber a licensed gas fitter or a professional service technician Improper installation and or operation or installation by an unqualified person will void the warranty WARNING 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 W...

Page 2: ...tric Consumption Freeze Protection 271 W 2 26A SPECIFICATIONS INTRODUCTION SAFETY GUIDELINES INSTALLATION General Included Accessories Outdoor Installation Indoor Installation Direct Intake Vent System Venting Instructions Gas Supply Gas Pipe Sizing Water Connections Pressure Relief Valve Electrical Connections Remote Controller Connection Pump Connection Easy Link System Multi Unit System Initial...

Page 3: ...ription This manual provides information necessary for the installation operation and maintenance of the Mobius T M50 water heater 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 ...

Page 4: ...et temperature F 3 2 100 120 2 9 125 130 2 6 140 2 4 145 150 2 1 155 185 Example If the set temperature is 120ºF The section s in operation is indicated by the black square s Right combustion section The primary and secondary section will reverse roles every 100 firing cycles or every 12 hours of unit operation Left combustion section or T M50 T M50 T M50 T M50 Depending on which side is the prima...

Page 5: ...PRESSURE and ELECTRIC RATING If this unit does not match your requirements do not install and consult with Takagi 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 WARNING Water temperatures over 125ºF can cause severe burns instantly or death from scalding The water temperature is set at 120ºF 49ºC ...

Page 6: ...kage 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 Takagi 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 The T M50 weighs 112 lbs Ensure that any and all support structures whether ...

Page 7: ...0 to a sealed combustion unit Direct venting allows the T M50 to draw fresh intake air from the outside The warranty will not cover damage caused to the unit due to installation in a contaminated environment that has not been converted using the TM DV50 5 Particles from flour aerosols and other contaminants may clog the air vent or reduce the functions of the rotating fan and cause improper burnin...

Page 8: ...hes 4 The outdoor vent cap must be used when unit is installed outdoor Takagi requires the use of its part No TM VC50 5 When installed outdoors the T M50 water heater shall be wall mounted or mounted on a stand Locate the water heater in an open unroofed area and maintain the following minimum clearances Make sure power to the unit is turned OFF before changing the dipswitch settings TMP1 TMP2 TMP...

Page 9: ... 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 Do not install the water heater vent terminator within 1 ft in the USA of any air intake or building opening and with in 3 ft in Canada of any air intake or building opening Refer to p 15 Do not install next to a dryer or any source of airborne debris that can be trapp...

Page 10: ...g 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 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 1 000 BTUH input of the total input rating of water heater in the enc...

Page 11: ...s If used as a direct vent appliance the T M50 requires a 5 combustible air supply pipe The intake pipe must be sealed airtight Air supply pipe can be made of ABS PVC galvanized steel corrugated aluminum corrugated stainless steel or Category III stainless steel Change the dipswitch settings to the direct vent system See diagram below Sidewall venting is recommended for the direct vent system Taka...

Page 12: ...when installing the vent pipe 4 Do not common vent this appliance with any other vented appliance 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 Category III approved or Special BH vent pipe 5 The maximum length of exhaust vent piping must not exceed 50 ft deducting 5 ft for each elbow used in the venting system D...

Page 13: ...an unobstructed vent pipe 3 Do not weld the vent pipe to the water heater collar 4 Do not cut the vent collar of the unit 5 The weight of the vent stack must not rest on the water heater 6 The vent must be easily removable from the top of the water heater for normal service and inspection of the unit 7 The water heater vent must not be connected to any other gas appliance or vent stack 8 Avoid loc...

Page 14: ... vent or connect any vent from other appliances to the T M50 vent Use 5 category III approved or Special BH single or double wall stainless steel vent pipe Wall Roof Rain Cap Roof Flashing Sidewall Vent Terminator Vertical Condensation Drain Install according to local codes TK BF50 Vent Damper Recommended for freezing weather conditions 36 F and below TK BF50 Vent Damper Recommended for freezing w...

Page 15: ... outside corner G Clearance to inside corner H Clearance to each side of center line extended above meter regulator assembly 3 feet I Clearance to service regulator vent outlet 3 feet J Clearance to non mechanical air supply inlet to building or the combustion air inlet to any other application 3 feet 1 foot 4 feet from below or side opening 1 foot from above opening K Clearance to mechanical air ...

Page 16: ...to the unit Ensure that any and all gas regulators used are operating properly and are providing gas pressures within the specified range shown above 4 Until testing of the main gas line supply pressure is completed ensure the gas line to the T M50 is disconnected to avoid any damage to the water heater MEASURING INLET GAS PRESSURE The T M50 cannot perform properly without sufficient inlet gas pre...

Page 17: ...upply Piping Maximum Capacity of Propane LP Gas Based on 11 WC supply pressure at a 1 0 WC pressure drop Unit kBTU per Hour Pipe Size Length in Feet inches 10 20 30 40 50 60 70 80 90 100 125 150 200 567 393 315 267 237 217 196 185 173 162 146 132 112 1 1071 732 590 504 448 409 378 346 322 307 275 252 213 1 2205 1496 1212 1039 913 834 771 724 677 630 567 511 440 1 3307 2299 1858 1559 1417 1275 1181...

Page 18: ... on the hot water outlet of the unit If the T M50 is installed within or subjected to a closed loop water system a thermal expansion tank must be installed 4 Before installing the water heater flush 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 5 There is a wire mesh filter within the cold inlet to...

Page 19: ...ted so that the hot water cannot splash on anyone or on nearby equipment 7 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 8 If the pressure relief valve installed on the T M50 discharges periodically this may be due to a defective thermal expansion tank ...

Page 20: ...oper operation after servicing 1 The heater must be electrically grounded Do not attach the ground wire to either the gas or the water piping 2 The Mobius T M50 water heater requires AC 120V 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 T M50 must be provided for service reasons Must comply with local ...

Page 21: ...are firmly fixed 5 Put the remote wires through the hole on the bottom of the unit casing 6 Connect the remote wires to the remote controller terminal properly No polarity Do NOT jump or short circuit wires Computer will be damaged 7 Replace Front Cover securely 8 Wires used for the remote controller connection must be Minimum 18AWG wire No polarity Maximum 400 feet long Remote controller terminal...

Page 22: ...essentially only a dry contact An external power supply and relays are required to operate the pump Please make sure the relays are properly rated for the recirculation pump Using the T M50 s internal thermistors as a temperature control the recirculation pump will only turn on when recirculation is needed CAUTION In a multi unit system the pump must be connected to the pump terminal in the MASTER...

Page 23: ...rol The T M50 will heat the water 5 4 F higher than its set temperature unless the T M50 is already set at its maximum temperature of 185 F This is to ensure a higher rate of recovery for storage tank applications The circulation pump from storage tank to T M50 will always remain on C No 4 and No 5 ON Energy Conserving Recirculation This pump control mode is similar to the Recirculation Control mo...

Page 24: ...Link system is limited to 4 units If you connect more than 4 units the first 4 units will work as part of the Easy Link system but the other additional units will only work as individual units The T M50 cannot be linked with other different Takagi models in the Easy Link system and Multi Unit system CAUTION Easy Link Multi System connectors are on each unit s computer board To change the dipswitch...

Page 25: ... Connect the SLAVE OUT connector of the SLAVE 2 unit to the SLAVE IN connector of the SLAVE 3 unit 6 The numbering system of the T M50 automatically allocates the unit to each water heater that is part of the Easy Link system CAUTION Unless you change dipswitch No 8 of the MASTER unit to ON the system will not work as an Easy Link system The units will work as individual units Master unit Unit 1 S...

Page 26: ...SLAVE 1 unit to the SLAVE IN connector of the SLAVE 2 unit the SLAVE 2 unit will work as an individual unit and will not be part of the Easy Link system WARNING Connecting two MASTER 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 MASTER to MASTER connection with the communication cable D...

Page 27: ...r residential applications For a 10 unit system the computer can modulate between the usage of 15 000 BTU h to 3 8 Million BTU h The TM RE30 optional remote controller is not required for the Easy Link system If running the Easy Link system without the TM RE30 please make sure the dipswitch settings for the temperature outdoor and direct vent settings on ALL the units are set to the same settings ...

Page 28: ...i unit system The dark squares indicate the direction the dipswitches should be set to Please refer to the TM MC01 manual for further instructions of the Multi Unit system Communication cable Connectors Dipswitch MASTER SLAVE IN S LAV E OUT Connectors Dipswitch M A S T E R SLAVE IN S LAV E OUT Connectors Dipswitch M A S T E R SLAVE IN S LAV E OUT Connectors Dipswitch M A S T E R SLAVE IN SLA VE OU...

Page 29: ...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 CAUTION IF YOU SMELL GAS Do not try to start the water heater 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 i...

Page 30: ...r temperatures over 125 F can cause severe burns instantly or death from scalding The outlet hot water temperature of the Mobius T M50 water heater is factory set at 120 F Feel the water temperature before bathing or showering 100 105 110 115 120 125 130 135 140 145 150 155 160 165 170 175 110 115 120 125 130 135 140 145 150 155 160 165 170 175 180 185 The temperature and the time will be displaye...

Page 31: ...nds And then make sure 1 or 0 is displayed on remote controller 1 is displayed for single units 0 is displayed for Easy Link Multi Systems 3 Press the TIME button Make sure OFF and F1 are displayed on remote controller 4 Press the INFO button After make sure OFF blinks 5 Press the HOT button or the COLD button to set display to on 6 Simultaneously press both the BUZZER button and the INFO button t...

Page 32: ...ower supply The freeze protection system will activate when the surrounding and or outside temperatures drop below 36 5 F 2 5 C In any areas subject to freezing temperatures Takagi highly recommends installing the unit indoors 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 l...

Page 33: ...changing the dipswitch settings Only change the switches with the dark squares The dark squares indicate which direction the dipswitch should be set to DO NOT set to 185 ºF if you use your T M50 in a recirculation system This will cause damage to the heater and void the warranty To change dipswitch settings for temperatures locate the lower bank of dipswitches to the right of 7 Seg LED DO NOT adju...

Page 34: ...e by a licensed technician UNIT DRAINING and FILTER CLEANING 1 Close the manual gas shut off valve 2 Turn off power to the unit and then turn on again 3 Wait 30 seconds and then turn off power to the unit yet again 4 Close the water shut off 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 t...

Page 35: ... too high p 30 33 The hot water is not available when a fixture is opened Make sure the unit gets 120V 60Hz power supply If you are using the remote controller is the power button turned on p 30 Is the gas supply valve fully open p 29 Is the water supply valve fully open p 29 Is the filter on cold water inlet clean p 34 Is the hot water fixture sufficiently open to draw at least 0 5 GPM through th...

Page 36: ...LE SOLUTIONS Remote controller does not display anything when the power button is turned on Press the ON OFF button If the lamp lights up This is normal When the unit has not operated for five minutes or more the display turns off to converse energy If the lamp does not light Make sure the unit gets power supply Make sure the connection to the unit is correct p 21 An ERROR code is displayed Please...

Page 37: ... it were only a Single Unit When the right and or left combustion section has an error code the red lamp next to the 7 Seg LED on the central computer board will flash to indicate which combustion section has the error code Refer to the above picture Example If Unit 2 has the 321 error code inlet thermistor The 7 Seg LED on the Master unit will display 3 2 1 0 2 displaying only one digit at a time...

Page 38: ...check unit number Priority SW Alarm contact Draft switch 7 7 8 8 R Y G W BK BR R O Y G W BK BL R Y G W BK BR R O Y G W BK BL Water Control valve Water Control valve BK BK BK BK B K B K B K B K Y G O O G Y BK BK W W BL BK BK R R BL BL G G R BL Y O W P P P P P P P P Porpor tional Valve G WR BK W R WR BK R W BL LB G O R W BK Y W BK W BK BL LB G O R B K W BK W W BK B K W W W W W W W Porpor tional Valv...

Page 39: ...ce technician Forced or attempted repair may result in a fire of explosion D 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 1 STOP Read the safety information above or in the Owners Manual 2 Turn off all electric power to the water heater 3 Do not attem...

Page 40: ...NING The outlet hot water temperature of the T M50 water heater is factory set at 120 ºF 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 an infirm person in the bath unsupervised DANGER Hot Water Heater temperature over 125 ºF can cause severe burns instantly ...

Page 41: ...ure over 125 F can cause severe burns instantly or death from scalds 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 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 damag...

Page 42: ...Dual purpose hot water heating Domestic and Space Heating 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 concep...

Page 43: ...o matter the orientation 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 away from each other no matter the orientation A direct vent termination must also be at least 2 ft away from an inside corner if the adjacent wall is less than 2 ft of length the minimum required distance away A...

Page 44: ...rmful 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 4 TM VC50 Vent Cap The TM VC50 Vent Cap is for outdoor installation with the T M50 water heater The cap is installed on the top of...

Page 45: ...he same as the T M50 The T M50 and the T M50 ASME share the same components 3 7 6 13 3 11 4 10 1 12 3 3 3 4 2 4 2 3 5 9 8 4 718 ASME 14 T M50 ASME 709 416 705 707 706 708 704 418 703 715 701 719 113 708 702 710 712 713 711 714 113 711 113 113 716 416 705 707 706 708 704 418 703 709 715 701 719 113 720 721 714 113 113 717 722 723 ...

Page 46: ... 118 707 707 109 112 106 111 105 113 113 104 103 108 107 113 110 101 114 115 116 113 113 117 707 707 102 121 119 118 707 707 109 112 106 111 105 113 113 104 103 108 107 113 110 101 123 124 126 125 3 123 122 120 705 The T M50 and the T M50 ASME share the same components ...

Page 47: ...nd the T M50 ASME share the same components 3 132 133 136 135 137 402 401 403 404 406 407 408 409 410 411 113 412 413 414 415 113 416 405 402 401 403 404 406 407 408 409 410 411 113 412 413 414 415 113 416 405 417 133 134 131 128 130 127 129 137 113 417 138 139 139 138 T M50 ASME 444 445 446 446 447 ...

Page 48: ... 434 3 433 425 438 437 436 435 113 411 420 419 427 426 418 420 428 421 419 419 426 427 411 411 411 419 431 411 418 430 419 420 419 411 424 406 407 419 411 425 427 448 407 406 425 427 411 419 411 419 411 439 440 441 442 443 429 425 421 419 411 406 407 424 429 425 451 407 406 430 434 420 411 418 411 449 421 419 411 450 418 430 3 433 425 438 437 436 435 113 419 411 419 422 422 411 419 427 426 411 427...

Page 49: ...EKK0E Flame rod 134 EM299 Duct 104 EKK0F Igniter rod 135 EM294 Duct cover 105 EKK1P Damper 136 EM268 Duct gasket 106 EKN61 Rod cap 137 EW003 Screw M4X10 107 EKK2V Burner window 138 EK270 Fan damper 108 EKK2W Rod holder gasket 139 EW00B Screw M3X8 109 EKK32 Rod holder 140 EM286 Freeze protection thermostat 110 EKK0G Burner holder gasket 401 EM308 Heat exchanger assembly for T M50 111 EKK2M High vol...

Page 50: ... Inlet thermistor 709 EKH43 TM50 PCB cover 425 EX001 Heater 502 710 EM329 MC50 PCB cover 426 EX002 Heater 101 711 EM279 Multi communication wire 427 EK031 Heater fixing plate 16 712 EM261 Left communication wire 428 EM328 Left hot pipe for T M50 713 EM262 Right communication wire 429 EKH38 Heater fixing plate 20 714 EM273 Remote controller terminal 430 EKK1A Mixing thermistor 715 EM167 Wire Cramp ...

Page 51: ... IS FOR PRODUCT REGISTRATION FAILURE TO COMPLETE AND RETURN THE CARD OR FORM DOES NOT DIMINISH YOUR WARRANTY RIGHTS 2 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 Takagi Industrial Co USA Inc will honor the warranty to the original retail buyer at the original location only...

Page 52: ... LIMITATION MAY NOT APPLY TO YOU 6 THIS WARRANTY WILL NOT COVER THE FOLLOWING Any Takagi product that is not installed by a licensed plumber gas installer or contractor Damages due to accidents abuse misuse improper installation misapplication or incorrect sizing Damages due to fires flooding freezing electrical surges or any Acts of God Damages due to unauthorized alterations attachments and or r...