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SAFETY GUIDELINES 

 

 

Installation and service must be performed by a qualified installer (for 
example, a licensed plumber or gas fitter), otherwise the warranty will be 
void.

 

 

The installer (licensed professional) is responsible for the correct 
installation of the water heater and for compliance with all national, 
state/provincial, and local codes.

 

PLEASE READ THIS MANUAL CAREFULLY AND FOLLOW ALL DIRECTIONS. 
 

GENERAL 

1. 

Follow all local codes, or in the absence of local codes, follow the most recent edition of 
the National Fuel Gas Code: ANSI Z223.1/NFPA 54 in the USA or CAN/CSA B149.1 
Natural Gas, Propane Installation Code in Canada.  

2. 

Properly ground the unit in accordance with all local codes or in the absence of local codes, 
with the National Electrical Codes:  ANSI/NFPA 70 in the USA or CSA standard C22.1 
Canada Electrical Code Part 1 in Canada. 

3. 

Carefully plan where you intend to install the water heater. Please ensure: 

  Your water heater will have enough combustible air and proper ventilation. 

  Locate your heater where water leakage will not damage surrounding areas (please 

refer to p. 5).  

4. 

Check the rating plate for the correct

 GAS TYPE, GAS PRESSURE, WATER PRESSURE 

and ELECTRIC RATING.

  

*If this unit does not match your requirements, 

do not install and consult with the 

manufacturer

5. 

If any problem should occur, turn off all hot water taps and turn off the gas. Then call a 
trained technician or the Gas Company or the manufacturer. 

                                                                                 

WARNING 

 Water temperatures over 125ºF (52ºC) can cause severe burns instantly or death from 

scalding. The water temperature is set at 120ºF (49ºC) from the factory to minimize 
any scalding risk.  Before bathing or showering always check the water temperature. 

 

Do not store or use gasoline or other flammables, vapors, or liquids in 
the vicinity of this appliance. 

 

Do not reverse the water and/or gas connections as this will 
damage the gas valves and can cause severe injury or death. 
Follow the diagram on p. 17 when installing your water heater: 

 

Do not use this appliance if any part has been in contact with or 
been immersed in water. Immediately call a licensed plumber, a 
licensed gas fitter, or a professional service technician to inspect 
and/or service the unit if necessary. 

 

Do not disconnect the electrical supply if the ambient temperature will drop below 

freezing. The Freeze Prevention System only works if the unit has electrical power. The 
warranty will not be covered if the heat exchanger is damaged due to freezing. Refer to 
the section on the Freeze Prevention System on p. 33 for more information. 

 

WARNING 

Prohibited 

Summary of Contents for 710 ASME

Page 1: ...each your gas supplier call the fire department Installation and service must be performed by a qualified installer service agency or the gas supplier 710 710 ASME T M32 T M32 ASME On Demand Water Heater Installation Manual and Owner s Guide FEATURING ENDLESS HOT WATER ON DEMAND USAGE COMPACT SPACE SAVING ENERGY CONSERVATION COMPUTERIZED SAFETY NO PILOT LIGHT EASY LINK SYSTEM If you have any quest...

Page 2: ...LLATION General Included Accessories Warning for Installations Outdoor Installation Indoor Installation Direct Intake Vent System Venting Instructions Gas Supply Gas Pipe Sizing Water Connections Pressure Relief Valve Electrical Connections Remote Controller Connections Pump Control Connections Pump Control Mode Easy Link System Multi Unit System Initial Operation NORMAL OPERATION Normal Operation...

Page 3: ...n concepts only and is not accurate to the water heater s physical description This manual provides information necessary for the installation operation and maintenance of the water heater The model description is listed on the rating plate which is attached to the front cover of the water heater Please read all installation instructions completely before installing this product If you have any pr...

Page 4: ...CTRIC RATING If this unit does not match your requirements do not install and consult with the manufacturer 5 If any problem should occur turn off all hot water taps and turn off the gas Then call a trained technician or the Gas Company or the manufacturer WARNING Water temperatures over 125ºF 52ºC can cause severe burns instantly or death from scalding The water temperature is set at 120ºF 49ºC f...

Page 5: ...bedroom or a room that is intended for quiet study or meditation etc Locate your heater close to a drain where water leakage will not do damage to surrounding areas As with any water heating appliance the potential for leakage at some time in the life of the product does exist The manufacturer will not be responsible for any water damage that may occur If you install a drain pan under the unit ens...

Page 6: ...rt the water heater to a sealed combustion unit Direct venting allows the water heater 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 direct vent conversion kit 5 Particles from flour aerosols and other contaminants may clog the air vent or reduce the functions o...

Page 7: ...n where gas and water 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 within 3 ft in Canada of any air intake or building opening Refer to p 14 Do not install next to a dryer ...

Page 8: ...e right bank of dipswitches 4 The outdoor vent cap must be used when unit is installed outdoor The manufacturer requires the use of its part No 9007676005 TM VC32 5 When installed outdoors the 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 changi...

Page 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...

Page 10: ...t vent appliance the water heater 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 The manufacturer ...

Page 11: ...etal 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 Special BH vent pipe 5 The maximum length of exhaust ...

Page 12: ...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 locating the water heater vent termination near any air intake devices These fans can pic...

Page 13: ...nnect any vent from other appliances to the water heater 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 termination Vertical condensation drain Install according to local codes Backflow preventer Recommended for freezing weather conditions 36 F and below Backflow preventer Recommended for freezing weathe...

Page 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 ...

Page 15: ...peration 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 Ensure that any and all gas regulators used are operating properly and are providing gas pressures within the specified range shown above Until testing of the main gas line supply pressure is completed ensure the gas line to th...

Page 16: ...913 834 771 724 677 630 567 511 440 1 3 307 2 299 1 858 1 559 1 417 1 275 1 181 1 086 1 023 976 866 787 675 2 6 221 4 331 3 465 2 992 2 646 2 394 2 205 2 047 1 921 1 811 1 606 1 496 1 260 10 Length 3 4 Pipe Size Gas Sizing Example Natural Gas 15 Length 1 2 Pipe Size 10 Length 1 2 Pipe Size Furnace 120 000BTU 10 Length 1 Pipe Size Water Heater 240 000BTU 5 Length 1 1 4 Pipe Size Range 65 000BTU 10 ...

Page 17: ...E BY A LICENSED PROFESSIONAL 1 Shut off the manual gas valve on the supply gas line 2 Remove the screw for the pressure port located on the gas inlet of the water heater shown in the diagram to the right 3 Connect the manometer to the pressure port 4 Re open the manual gas valve Check to see that there are no gas leaks Open some of the fixtures that use the highest flow rate to turn on the water h...

Page 18: ...ntain optimum flow PRESSURE RELIEF VALVE The water heater 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...

Page 19: ...per operation after servicing 1 The water heater must be electrically grounded Do not attach the ground wire to either the gas or the water piping 2 The water heater requires 120 VAC 60 Hz electrical power supply that is properly grounded A proper disconnect i e on off switch power plug etc controlling the main power to the water heater must be provided for service reasons Must comply with local c...

Page 20: ...als 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 or computer will be damaged 7 Replace Front Cover securely 8 Wires used for the remote controller connection must be Minimum 20 gauge wire No polarity Maximum 400 feet long PA RE NT Back of...

Page 21: ...be connected using suitable relays shown in the diagram below Please make sure the relays are properly rated for the recirculation pump Using the water heater 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 PARENT unit only If the pump is conn...

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

Page 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 water heater The pump will stop when the remote controller 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 N...

Page 24: ...4 000 BTU h and 960 000 BTU h The 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 water heater cannot be linked with other different models in the Easy Link system Cold Hot Gas Do not touch the Multi unit System connectors To change the dipswitch...

Page 25: ...eater in the Easy Link system in accordance with the table below PARENT unit Unit 1 CHILD units Unit 2 3 and 4 CAUTION Unless you change dipswitch No 8 of the PARENT unit to ON the system will not work as an Easy Link system The units will work as individual units Wrong dipswitch setting on the PARENT unit The dark squares indicate the direction the dipswitches should be set to PARENT unit CHILD 1...

Page 26: ...e temperature outdoor and direct vent settings on ALL the units are set to the same settings Otherwise the units may not operate properly If the remote controller is used the temperature on all the units in the system will automatically be set to the same temperature that is set on the remote However even with the remote the outdoor and direct vent dipswitch settings still need to be set to the sa...

Page 27: ...unit and the CHILD 2 unit Prohibited Wrong connection between the CHILD 1 unit and the CHILD 2 unit Wrong connection between the PARENT unit and the CHILD 1 unit PARENT unit CHILD 1 unit Communication cable 2 1 2 1 3 4 3 4 2 1 2 1 3 4 3 4 Connectors OFF ON OFF ON Connectors OFF ON OFF ON 1 2 3 4 5 6 7 8 Left bank of Dipswitches 1 2 3 4 5 6 7 8 Left bank of Dipswitches PARENT PARENT PARENT unit CHI...

Page 28: ...e 9007675005 TM MC01 and one 9007603005 TM RE30 can control from 2 units to 20 units for commercial or residential applications For a 20 unit system the computer can modulate between the usages of 24 000 BTU h to 4 8 Million BTU h An individual cut off switch if hard wired is recommended for each unit in a multi unit system for the purpose of maintenance Multi Unit System Connection Diagram Multi ...

Page 29: ...further instructions of the Multi Unit system The Comunication Cables are included with the 710 T M32 The Cables use 18 gage wire and can be up to 250 ft long Wire 3 Male Adapter and 4 Female Adapter Multi unit connectors are on each unit s computer board 7 Seg LED Right bank of dipswitches Left bank of dipswitches Do not touch the Easy Link connectors ...

Page 30: ...et 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 ...

Page 31: ...RATION WITH REMOTE CONTROLLER INSTALLED 9007603005 TM RE30 Optional 1 Press the power ON OFF button 2 Set temperature Example 110 F 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 WARNING Hot Water temperatures over 125 F 52ºC can cause severe burns instantly or death from scalding The outlet hot water temperature of t...

Page 32: ...t five seconds 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 unit 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 t...

Page 33: ...p power 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 the manufacturer 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 i...

Page 34: ...tches 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 water heater 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 ...

Page 35: ...gh the burner window in the burner assembly located at the middle of the water heater The manufacturer recommends having the unit checked once a year or as necessary by a licensed technician If repairs are needed any repairs should be done by a licensed technician UNIT DRAINING and FILTER CLEANING 1 Close the manual gas shut off valve 2 Turn off power to the unit and then turn on again 3 Wait 30 s...

Page 36: ...too high p 31 34 The hot water is not available when a fixture is opened Make sure the unit has 120 VAC 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 t...

Page 37: ...L PROBLEM POSSIBLE 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 has power supply Make sure the connection to the unit is correct p 20 An ERROR code is d...

Page 38: ...de 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 PARENT 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 however will display 232 on its screen in its entir...

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: ...NG The outlet hot water temperature of the water heater is factory set at 120 ºF 49ºC 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 52ºC can cause severe burns instantl...

Page 41: ...nnected to any heating system or component s previously used with non potable water where any chemicals were added to the water heating appliances When the system requires water for space heating at temperatures higher than required for other uses a means such as a mixing valve shall be installed to temper the water for those other uses in order to reduce scald hazard potential Water temperature o...

Page 42: ... 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 Th...

Page 43: ...ltiple 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 from the inside corner will be e...

Page 44: ... cap 9007676005 TM VC32 The vent cap is for outdoor installation with the 710 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 Direct vent conversion ...

Page 45: ...7 719 712 706 Case assembly Computer board assembly COMPONENTS DIAGRAM Other than Part 706 the 710 T M32 and the 710 ASME T M32 ASME models share the same components 052 006 052 007 703 008 052 007 051 051 004 052 001 005 052 004 003 050 051 050 702 002 052 010 011 705 For 710 T M32 706 For 710 ASME T M32 ASME ...

Page 46: ...the 710 ASME T M32 ASME models share the same components 103 101 102 401 104 105 152 707 152 106 107 151 108 109 110 152 152 111 152 112 113 153 114 115 154 116 117 155 118 119 121 704 152 122 156 157 158 152 123 159 159 124 125 704 152 120 ...

Page 47: ...10 052 052 417 416 418 427 415 435 420 430 421 428 429 436 420 431 414 420 423 420 405 426 425 401 402 403 411 412 413 427 419 422 419 150 424 432 437 434 419 433 414 414 414 414 414 414 414 211 150 404 405 431 414 420 423 420 405 426 425 401 402 403 150 424 432 437 417 416 418 4 27 415 435 420 419 406 407 408 409 410 052 440 428 429 436 411 412 413 427 419 422 420 439 434 419 433 4 14 437 414 441...

Page 48: ...45 EKK0E EKK32 EKK0F EKN61 EX01Z 111 112 113 114 115 Damper Urethane tube Pressure port Fan motor fixing plate Fan motor 319143 298 319143 346 319143 042 319143 281 319143 043 EM409 EX02C EKK2D EM379 EKK25 116 117 118 119 120 Fan damper Freeze protection thermostat Manifold gasket A Manifold gasket B Manifold assembly with gas valve assembly LP Manifold assembly with gas valve assembly NA 319143 2...

Page 49: ...for 710 T M32 Inlet thermistor Water control valve Screw M3 6 Heater fixing plate 16 319143 288 319143 085 319143 086 319143 087 319143 125 EM390 EKK38 EKH32 EW00A EK031 426 427 428 429 430 Pipe heater 212 Pan screw M4 6 W Washer O ring P15 FKM Flow sensor Hot pipe for 710 T M32 319143 321 319143 090 319143 091 319143 092 319143 289 EM45V EW00L EZM15 EKH33 EM391 431 432 433 434 435 L joint Hi limi...

Page 50: ... 710 models T M32 models 707 708 709 710 711 Flame rod wire Nylon clamp Igniter Freeze protection wire AC100V wire AC100V Transformer connecting wire 319143 292 319143 143 319143 320 319143 291 319143 297 EM395 EC00X EM45T EM393 EM403 712 713 714 715 716 Ground fault circuit interrupter Power supply code assembly AC120V Transformer connecting wire Surge box PCB fixing plate 319143 227 319143 296 3...

Page 51: ... AND WITHIN THE APPLICABLE PERIOD SPECIFIED IN THE FOLLOWING TABLES ONLY DIRECT DAMAGES SHALL BE RECOVERABLE BY A CLAIMANT UNDER THIS LIMITED WARRANTY AND IN NO EVENT WHETHER AS A RESULT OF BREACH OF CONTRACT BREACH OF WARRANTY TORT LIABILITY INCLUDING NEGLIGENCE STRICT LIABILITY INDEMNITY OR OTHERWISE THE MANUFACTURER WILL BE LIABLE FOR ANY SPECIAL INCIDENTAL OR INDIRECT CONSEQUENTIAL DAMAGES INC...

Page 52: ...s due to water quality Introduction of liquids other than potable water or potable water glycol mixtures into the product Introduction of pool water spa water or any chemically treated water into the product Introduction of hard water measuring more than 7 grains per gallon 120 ppm for single family domestic applications or more than 4 grains per gallon 70 ppm for all other types of applications i...

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