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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 concept design only.  The reference to the 1/8

th

 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

 

 

* Size the pump to provide at about 2 GPM through the system at 15 Ft of Head plus applications 
and piping head losses. 2 GPM will allow the system to operate at its optimal performance.
* If the application requires a higher re-circulating flow rate, make sure that the re-circulating flow 
rate is no greater than  4

 

GPM.  If the flow rate is too high, the system could be damaged by 

erosion. 

Takagi

P

T

An approved Pressure Only

Relief Valve, Tie to Location
approved by Local Codes and
Must Meet BTU Rating of Takagi
Model Used

Unions

4" Gas Exhaust Vent (Discharge

Must Comply with Local and
State Codes).  Can Not Be
Common Vented with Other

Appliances

   Atmospheric
Vacuum Breaker

Pump (Must Be Sized Properly

With Each Application).  Pump
Shall Run 60 Seconds Every 6

Hours

Pressure

 Gauge

Apply Correct
Thermal

Expansion

Tank-Size Per
Application

Tempered
Water To

House

Cold Inlet

Shut-Off
Valve

Check Valve Will
Have 1/8" Hole in
Check, As Per
Mass. Code

Thermometer

Thermostatic Mixing Valve

Shut-Off
Valves

Check Valve

Hot

Water
Outlet

Cold
Water
Inlet

T-Handle Gas
Shut-Off Valve

**Maximum allowable distance of
50-Ft. from water heater and
heating panel

Heating Coil

(used with air-handler)

Diagramatic Layout of Radiant Heating and

 Domestic Water Heater Per Mass. Code

Thermometer

Check

Valves

Gas
Inlet

Drain
Plug

Water

Filter

120 VAC Switch or Outlet

Содержание Mobius Water Heater T-M32

Страница 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...

Страница 2: ...tandby 8 9 W 0 07 A Electric Consumption Freeze Protection 187 W 1 56 A 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 ...

Страница 3: ...n concepts only and is not accurate to the T M32 s physical description This manual provides information necessary for the installation operation and maintenance of the Mobius T M32 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 ...

Страница 4: ...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 ...

Страница 5: ...jacent 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 Takagi will not be responsible for any water damage that may occur If you install a drain pan under the unit e...

Страница 6: ...2 to a sealed combustion unit Direct venting allows the T M32 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 DV32 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...

Страница 7: ...t position Do not adjust the right bank of dipswitches 4 The outdoor vent cap must be used when unit is installed outdoor Takagi requires the use of its part No TM VC32 5 When installed outdoors the T M32 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 b...

Страница 8: ...ater can accumulate 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 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 14 Do not install next to a dryer or any source of...

Страница 9: ...ding 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 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 ratin...

Страница 10: ... appliance the T M32 requires a 4 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 Takagi recommends running the ...

Страница 11: ...s Inc FasNSeal Flex L Inc Z Flex Inc Z Vent III Metal Fab Inc and Heat Fab Inc Saf T Vent 3 Follow the vent pipe manufacturer s instructions 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 Spec...

Страница 12: ...t 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 locating the water heater vent terminator near any air intake devices These fans can pick up the exhaust flue products from the gas appl...

Страница 13: ...r connect any vent from other appliances to the T M32 vent Use 4 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 BF01 Backflow preventor Recommended for freezing weather conditions 36 F and below TK BF01 Backflow preventor Recommended for fre...

Страница 14: ... 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 ...

Страница 15: ...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 M32 is disconnected to avoid any damage to the water heater MEASURING INLET GAS PRESSURE The T M32 cannot perform properly without sufficient inlet gas pre...

Страница 16: ... Supply 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 11...

Страница 17: ...ve is also recommended on the hot water outlet of the unit If the T M32 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 wi...

Страница 18: ...he discharge piping for the pressure relief valve must be directed 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 M32 discharges peri...

Страница 19: ...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 M32 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 M32 must be provided for service reasons Must comply with local ...

Страница 20: ...re 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 Back of remote Front of rem...

Страница 21: ...using suitable relays shown in the diagram below Please make sure the relays are properly rated for the recirculation pump Using the T M32 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 connector in the MASTER unit only If the pump is connected to any of the ...

Страница 22: ...il the water in the loop reach the set temperature Note The recirculation pump needs to be connected to the pump terminal of the T M32 B Storage Tank Circulation Control No 7 ON Feature This is to ensure a higher rate of recovery for storage tank applications Function The T M32 makes Water heaters heat the water 5 4 F higher than its set temperature The circulation pump from storage tank to Water ...

Страница 23: ... 6 and No 7 are OFF the pump will be made to run all the time as long as there is a power supply to the T M32 The pump will stop when the TM RE30 remote is turned off Water in the loop will be maintained at set temperature Dipswitch settings for the Pump control mode A Recirculation Control Right bank of dipswitches B Storage Tank Circulation Control C Energy Conserving Recirculation D Normal Cont...

Страница 24: ...nd 960 000 BTU h The T M32 Easy 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 M32 cannot be linked with other different Takagi models in the Easy Link system Cold Hot Gas Do not touch the Multi System connectors To change the dipswitch settings fo...

Страница 25: ...connector of the SLAVE 2 unit to the 1 connector of the SLAVE 3 unit 6 Make sure the 7 seg LED of all the units computer boards display the unit The numbering system of the T M32 automatically allocates the unit to each water heater that is part of the Easy Link system Master unit Unit 1 Slave units Unit 2 3 and 4 CAUTION Unless you change dipswitch No 8 of the MASTER unit to ON the system will no...

Страница 26: ... settings still need to be set to the same settings on all the units Wrong connection between the MASTER unit and the SLAVE 1 unit MASTER unit SLAVE 1 unit Communication cable Connectors MASTER 2 1 MASTER 2 1 OFF ON 1 2 3 4 5 6 7 8 Left bank of Dipswitches OFF ON MST DIRE OUT TMP3 TMP2 TMP1 1 2 3 4 5 6 7 8 MODE D PRT 3 4 3 4 Connectors MASTER 2 1 MASTER 2 1 OFF ON 1 2 3 4 5 6 7 8 Left bank of Dips...

Страница 27: ... 2 3 4 5 6 7 8 Left bank of Dipswitches OFF ON MST DIRE OUT TMP3 TMP2 TMP1 1 2 3 4 5 6 7 8 MODE D PRT 3 4 3 4 Connectors MASTER 2 1 MASTER 2 1 OFF ON 1 2 3 4 5 6 7 8 Left bank of Dipswitches OFF ON MST DIRE OUT TMP3 TMP2 TMP1 1 2 3 4 5 6 7 8 MODE D PRT 3 4 3 4 MASTER unit SLAVE 1 unit SLAVE 2 unit Communication cable Connectors MASTER 2 1 MASTER 2 1 OFF ON 1 2 3 4 5 6 7 8 Left bank of Dipswitches ...

Страница 28: ...to 20 water heaters As shown is a sample for 3 T M32s Make sure the 7 seg LED of all the units computer boards display the unit The TM MC01 automatically allocates the unit 1 20 to each water heater that is part of the Multi unit system Terminals for Water heaters Unit 1 Unit2 Unit3 Communication cable Connectors MASTER 2 1 MASTER 2 1 OFF ON 1 2 3 4 5 6 7 8 Left bank of Dipswitches OFF ON MST DIRE...

Страница 29: ...9ºF to 167ºF 182ºF as shown below NOTE The maximum set temperature with the TM RE10 When the red jumper on the back of the TM RE10 is installed the maximum set temperature is 167 F If you remove the jumper the maximum set temperature will be 182 F When the set temperature is 182 F H is displayed on the TM RE10 Refer to p 31 about the TM RE30 99 100 102 104 106 108 110 111 113 115 117 122 131 140 1...

Страница 30: ...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...

Страница 31: ...rns instantly or death from scalding The outlet hot water temperature of the Mobius T M32 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 displayed on the remote controller Temperatures avail...

Страница 32: ...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...

Страница 33: ...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...

Страница 34: ...he 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 M32 in a recirculation system This will cause damage to the heater and void the warranty To change dipswitch settings for temperatures locate the left bank of dipswitches the lower of 7 Seg LED DO NOT adjust the right bank of dipswitches 7 Seg LED Left bank of dipswitches...

Страница 35: ...ed any repairs should be done 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 p...

Страница 36: ...t too high p 31 34 The hot water is not available when a fixture is opened Make sure the unit has 120V 60Hz power supply If you are using the remote controller is the power button turned on p 31 Is the gas supply valve fully open p 30 Is the water supply valve fully open p 30 Is the filter on cold water inlet clean p 35 Is the hot water fixture sufficiently open to draw at least 0 5 GPM through th...

Страница 37: ...OLUTIONS 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 has power supply Make sure the connection to the unit is correct p 20 An ERROR code is displayed Please see ...

Страница 38: ...n an Easy Link system will display the error code on its 7 Seg LED in exactly the same way as if it were only a Single Unit 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 The first 3 numbers indicate the error code The last two numbers indicate that Unit 2 has the error The remote controller howe...

Страница 39: ...hermostat Heater BK BK G W BK Trans former Ground BR BR AC120V G Ground BK W W BK BR BR Fuse box W BK Heater 1 2 3 4 5 6 O F F 7 8 G F I 1 2 3 4 5 6 O F F 7 8 BK W Pump Heater 2 1 GY GY P P O O 3 4 7 Seg LE D D ip switc h Adjustab le Dip sw it ch untou ch able MAX but to n MIN but to n Incr ease but to n Decr ease but to n Error call but to n B urning l am p Number display button A wiring diagram ...

Страница 40: ...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...

Страница 41: ...NING The outlet hot water temperature of the T M32 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 ...

Страница 42: ...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...

Страница 43: ...ormance If the application requires a higher re circulating flow rate make sure that the re circulating flow rate is no greater than 4 GPM If the flow rate is too high the system could be damaged by erosion Takagi P T An approved Pressure Only Relief Valve Tie to Location approved by Local Codes and Must Meet BTU Rating of Takagi Model Used Unions 4 Gas Exhaust Vent Discharge Must Comply with Loca...

Страница 44: ...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...

Страница 45: ...door installation with the T M32 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 5 TM DV32 Direct Vent Kit This kit can be used convert the T M32 from a conv...

Страница 46: ...0 6 0 52 00 7 7 03 0 08 0 52 00 7 051 0 51 004 05 2 0 01 00 5 05 2 00 4 0 03 05 0 0 51 0 50 70 2 0 02 052 Other than Part 706 the T M32 and the T M32 ASME share the same components 7 0 8 0 5 2 7 1 6 05 2 7 1 5 71 9 70 1 05 2 05 2 7 1 4 7 1 3 0 5 2 7 1 1 71 0 7 2 0 7 18 71 7 4 23 7 0 5 7 0 4 7 0 3 7 09 0 5 2 70 8 1 15 7 03 7 07 7 19 7 1 2 70 6 705 For T M32 706 For T M32 ASME ...

Страница 47: ...and the T M32 ASME share the same components 103 101 102 401 1 04 105 152 707 152 106 107 151 1 08 109 110 152 152 111 152 112 113 153 114 115 154 116 1 17 1 55 118 119 121 704 152 122 156 157 158 152 123 159 159 124 125 704 152 120 ...

Страница 48: ...9 406 407 408 409 410 052 440 428 429 436 411 412 413 427 419 422 420 439 434 419 433 414 437 414 441 A A 414 414 052 414 434 414 414 414 To the Heat exchanger 21 0 1 5 0 4 0 4 4 05 40 6 4 07 40 8 4 09 4 1 0 0 52 05 2 41 7 4 16 4 18 4 27 4 15 4 35 4 20 43 0 4 21 42 8 42 9 43 6 4 2 0 4 31 41 4 42 0 42 3 42 0 4 0 5 4 26 4 25 4 0 1 4 0 2 4 0 3 41 1 4 12 4 1 3 42 7 41 9 42 2 4 19 1 5 0 42 4 43 2 4 3 7...

Страница 49: ...an screw M4 10 106 EKK0E Flame rod 158 EW001 Screw M4 10 W Washer 107 EKK32 Rod holder 159 EW005 Hex head screw M4 8 108 EKK0F Igniter rod 160 EW00L Pan screw M4 6 W Washer 109 EKN61 Rod cap 210 EM415 Heat exchanger assembly for T M32 110 EX01Z High voltage ignite cable 211 EM45C Heat exchanger assembly for T M32 ASME 111 EM409 Damper 401 EKN50 Silicon ring 112 EX02C Urethane tube 402 EKK26 Fuse f...

Страница 50: ...s wire for T M32 ASME 420 EZM16 O ring P16 EPDM Purple 707 EM395 Flame rod wire 421 EM390 Cold pipe for T M32 708 EC00X Nylon clamp 422 EKK38 Inlet thermistor 709 EM45T Igniter Freeze protection wire 423 EKH32 Water control valve 710 EM393 AC100V wire 424 EW00A Screw M3 6 711 EM403 AC100V Transformer connecting wire 425 EK031 Heater fixing plate 16 712 EM207 Ground fault circuit interrupter 426 EM...

Страница 51: ...F 60 F 70 F 40 F 6 4 5 9 5 5 5 1 4 8 4 5 4 3 4 0 3 8 3 5 3 2 3 1 2 9 2 8 2 7 2 6 50 F 7 7 7 0 6 4 5 9 5 5 5 1 4 8 4 5 4 3 3 8 3 5 3 3 3 2 3 1 2 9 2 8 60 F 9 0 8 5 7 7 7 0 6 4 5 9 5 5 5 1 4 8 4 3 3 8 3 7 3 5 3 3 3 2 3 1 70 F 9 0 9 0 9 0 8 5 7 7 7 0 6 4 5 9 5 5 4 8 4 3 4 0 3 8 3 7 3 5 3 3 100 105 110 115 120 125 130 135 140 150 160 165 170 175 180 185 When the set temperature is 150ºF or higher maxi...

Страница 52: ... Takagi Industrial Co USA Inc will furnish a brand new heat exchanger or a refurbished or conditioned tankless water heater with same model For commercial industrial and or recirculation applications heating or domestic and or more than a single family residential dwelling the heat exchanger is covered within three 3 years of usage excluding labor and shipping This does not include on demand recir...

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