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  5. Installation Manual And Owner's Manual

Takagi 710 ASME Installation Manual And Owner's Manual

Summary of 710 ASME

  • Page 1

    Gas tankless water heater 710 / 710 asme (t-m32 / t-m32 asme )models suitable for potable water heating and space‐heating * *please refer to local codes for space‐heating compliance. -do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance. -...

  • Page 2: Contents

    - 2 - contents note *all references to the 710 (t-m32) also refer to the 710 asme (t-m32 asme) model. *check the rating plate to ensure this product matches your specifications. *in accordance with ansi z21.10.3, co emission does not exceed 400 ppm for normal input. Specifications natural gas input ...

  • Page 3: Introduction

    - 3 - introduction 1. A hot water tap is turned on. 2. Water enters the heater. 3. The water flow sensor detects the water flow. 4. The computer automatically ignites the burner. 5. Water circulates through the heat exchanger and then gets hot. 6. The computer will modulate the gas supply valve and ...

  • Page 4: Safety Guidelines

    - 4 - 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 w...

  • Page 5: Installation

    - 5 - installation all gas water heaters require careful and correct installation to ensure safe and efficient operation. This manual must be followed exactly. Read the “safety guidelines” section at the beginning of this manual. The warranty will not cover damage caused by water quality. Water hard...

  • Page 6: General

    - 6 - general 1. The manifold gas pressure 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 be connected or removed easily. Refer to p. 8 and p. 9 for proper clearances. 3. The electrical connect...

  • Page 7: Warning For Installations

    - 7 - warning for installations for your safety, read before installation: 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. Do not have the vent terminal pointing toward any opening into a bui...

  • Page 8: Outdoor Installation

    - 8 - the dark square is the direction the dipswitch should be set to. 1 2 3 4 5 6 7 8 tmp1 tmp2 tmp3 mode dire out d-prt mst o n keep the clearances. Outdoor installation 1. Follow all local codes, or in the absence of local codes, follow the most recent edition of the national fuel gas code: ansi ...

  • Page 9: Indoor Installation

    - 9 - keep the following clearances. Indoor installation 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. When installed ind...

  • Page 10: Direct Intake Vent System

    - 10 - the dark square is the direction the dipswitch should be set to. Exhaust inlet 1 2 3 4 5 6 7 8 tmp1 tmp2 tmp3 mode dire out d-prt mst o n direct intake vent system this water heater may be converted to a direct-vent (sealed combustion) appliance by installing an adapter (part no. 9007668005 (...

  • Page 11: Venting Instructions

    - 11 - venting instructions 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 f...

  • Page 12: Vent Termination

    - 12 - vent termination 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.  the vent termination provides a means of installing vent pipe through the building wall a...

  • Page 13

    - 13 - horizontal installation diagram vertical installation diagram  regarding the clearance from the terminal to the air inlet or opening, refer to the next page.  install a condensation drain in the venting.  follow the vent manufacturer’s instructions and local codes.  do not common vent or ...

  • Page 14: Vent Clearances

    - 14 - vent clearances canada u.S.A direct vent and other than direct vent direct vent other than direct vent a clearance above grade, veranda, porch, deck, or balcony. 1 foot 1 foot 1 foot b clearance to window or door that may be opened. 3 feet 1 foot 4 feet from below or side opening. 1 foot from...

  • Page 15: -Gas Connections-

    - 15 - size the gas pipe appropriately to supply the necessary volume of gas required for the water heater using ansi z223.1/nfpa 54 in the usa or can/csa b149.1 in canada or local codes. Otherwise, flow capabilities and output temperatures will be limited. Gas supply and gas pipe sizing 1. Turn off...

  • Page 16: Natural Gas Supply Piping

    - 16 - natural gas supply piping maximum delivery capacity of cubic feet of gas per hour of ips pipe carrying natural gas of 0.60 specific gravity based on pressure drop of 0.5” wc based on energy content of 1,000 btu/cubic ft.: 710 (t-m32) requires 240 cubic ft./hr. Unit: cubic feet per hour pipe s...

  • Page 17

    - 17 - 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  to the off position. -measuring inlet gas pressure- the water heater cannot perform properly without sufficient inlet gas pressure. Bel...

  • Page 18: Water Connections

    - 18 - water connections ・ do not use this water heater if any part has been submersed under water. Immediately call a licensed professional to inspect the water heater and to replace any damaged parts. ・do not reverse the hot outlet and cold inlet connections to the water heater. This will not acti...

  • Page 19: Electrical Connections

    - 19 - electrical connections warning: follow the electrical code requirements of the local authority having jurisdiction. In the absence of such requirements, follow the latest edition of the national electrical code ansi/nfpa 70 in the u.S. Or the latest edition of csa c22.1 canadian electrical co...

  • Page 20

    - 20 - remote controller connections 1) disconnect power supply from the water heater. 2) take off the water heater’s front cover. 3) please find the remote controller terminals using the diagram below (located around the lower right-hand side of the water heater). 4) open the plastic cover of the r...

  • Page 21: Pump Control Connections

    - 21 - pump control connections the water heater can be used to control a recirculation pump. Proper pump control helps to preserve the life of the system and saves energy as well. The water heater pump control port is a “normally-open dry contact”, and therefore needs additional components to prope...

  • Page 22: Pump Control Mode

    - 22 - pump control mode the water heater provides the four types of the pump control modes. The pump control modes are selected by changing dipswitch settings. The dipswitches are located in the right bank of dipswitches in the upper-left quadrant of the computer board in the water heater. (see the...

  • Page 23

    - 23 - the dark squares indicate the direction the dipswitches should be set to. D) normal control (default setting): no.6 and no.7 off: feature: this mode provides no special pump control. The pump operation can only be turned on and off by the remote controller. Function: if a pump is connected to...

  • Page 24: Easy-Link System

    - 24 - easy-link system the water heater can be connected with other heaters of the same model with communication cables to work as a multiple manifold system.  the easy-link system can connect up to 4 units.  a communication cable (gray color) comes with each unit. The cables use 18 gage wire and...

  • Page 25

    - 25 - easy-link connection procedures 1. Choose one of your units as the “parent” unit. 2. “the parent” locate the left bank of dipswitches to the lower of the 7-seg. Led on the computer board of the unit that you select to be the “parent” unit. Change dipswitch no. 8 to “on”. Do not change any of ...

  • Page 26

    - 26 - t m - r e 3 0 o r t m - r e 1 0 communication cable 2 1 2 1 3 4 3 4 2 1 2 1 3 4 3 4 c o n n e c t o r s o f f o n o f f o n c o n n e c t o r s o f f o n o f f o n 1 2 3 4 5 6 7 8 left bank of dipswitches 1 2 3 4 5 6 7 8 left bank of dipswitches p a r e n t p a r e n t caution  if you connec...

  • Page 27

    - 27 - caution  if you connect the “parent” connector of the “parent” unit to the “[3]” connector of the “child-1” unit, the “parent” unit and the “child-1”unit will display “761” error code.  if you connect the “[2]” connector of the “child-1”unit to the “[3]” connector of the “child-2” unit, the...

  • Page 28

    - 28 - the dark squares indicate the direction the dipswitches should be set to. Terminals for water heaters unit 1 unit 2 unit 3 communication cable 2 1 2 1 3 4 2 1 2 1 3 4 2 1 2 1 3 4 2 1 2 1 3 4 2 1 2 1 3 4 t m - m c 0 1 t m - r e 3 0 o r t m - r e 1 0 c o n n e c t o r s o f f o n o f f o n 1 2 ...

  • Page 29

    - 29 - in a multi-unit system, connect the “ [3] ” connector and the “ [4] ” connector with the communication cable. Please refer to the multi-unit controller manual for further instructions of the multi-unit system. The comunication cables are included with the 710 (t-m32). The cables use 18 gage w...

  • Page 30: Initial Operation

    - 30 - initial operation  check the gas and water connections for leaks before firing it for the first time.  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 a qualified service tec...

  • Page 31: Normal Operation

    - 31 - (unit:°f) temperatures available under the high temperature mode normal operation  flow rate to activate the 710 (t-m32) : 0.5 gallon per minute  flow rate to keep the 710 (t-m32) running : 0.4 gallon per minute 1. Normal operation without remote controller 1. Open a hot water tap.* 2. Mix ...

  • Page 32

    - 32 - *to change the remote controller’s mode from default mode to high temperature mode, please follow the procedures below (the remote controller must be installed prior to operating these procedures): do not set to 185ºf if you use your water heater in a recirculation system. This will cause dam...

  • Page 33: Flow

    - 33 - flow  the flow rate through the water heater is limited to a maximum of 9.0 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 vs. Gallons per minute chart on p. 50 to determine the...

  • Page 34: Temperature Settings

    - 34 - the dark squares indicate the direction the dipswitches should be set to. Temperature settings  there are 8 preset temperatures that you can select from by changing the dipswitch settings on the computer board.  the temperature has been preset at the factory to 120ºf (49ºc).  if you desire...

  • Page 35: Maintenance and Service

    - 35 - 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.  clean the cold-water inlet filter. (refer to diagram below)  be sure that all openings for combustion and ventilation air are no...

  • Page 36: General Troubleshooting

    - 36 - general troubleshooting ~ temperature and amount of hot water ~ problem possible solutions it takes long time to get hot water at the fixtures.  the time it takes to deliver hot water from the water heater to your fixtures depends on the length of piping between the two. The longer the dista...

  • Page 37: ~ Water Heater ~

    - 37 - ~ water heater ~ problem possible solutions unit does not ignite when water goes through the unit.  is the flow rate over 0.5 gpm? (p. 31)  check for the filter on cold water inlet. (p. 35)  check for reverse connection and cross connection.  if you use the remote controller, is the power...

  • Page 38

    - 38 - troubleshooting – error codes the 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 remote controller (if installed) or on the 7-seg led of the central computer boa...

  • Page 39: Operating Safety

    - 39 - operating safety for your safety read before operating warning: if you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life. A. This water heater does not have a pilot. It is equipped with an ignition device that aut...

  • Page 40: Danger

    - 40 - danger 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: 1. Far away from heater 2. In approved contai...

  • Page 41: Applications

    - 41 - check valve check valve air separator recirculation pump hot water outlet to fixtures air vent unions gas supply ball valves expansion tank y‐strainer cold water inlet hot water outlet s cold water inlet gas inlet applications space heating applications warning  in order to purge air in wate...

  • Page 42

    - 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 code...

  • Page 43: Additional Clearances

    - 43 - additional clearances please follow all local and national codes in regards to proper termination clearances. In the absence of such codes, the following clearances can be used as guidelines. Local codes supersede these guidelines. For sidewall terminations exhaust termination 1ft. 1ft. 2ft. ...

  • Page 44: Optional Items

    - 44 - optional items 1. Temperature remote controller: 9007603005 (tm-re30) the temperature remote controller has two functions. It allows the output temperature from the water heater to be adjusted within the range of 100 °f to 185 °f, and it also works as a diagnostic tool that will give a concis...

  • Page 45: Components Diagram

    - 45 - 7 0 8 0 5 2 7 1 6 0 5 2 7 1 5 7 1 9 7 0 1 0 5 2 0 5 2 7 1 4 7 1 3 0 5 2 7 1 1 7 1 0 7 2 0 7 1 8 7 1 7 4 2 3 7 0 5 7 0 4 7 0 3 7 0 9 0 5 2 7 0 8 1 1 5 7 0 3 7 0 7 7 1 9 7 1 2 7 0 6 case assembly computer board assembly components diagram other than part# 706, the 710 (t-m32) and the 710 asme (...

  • Page 46

    - 46 - burner assembly the 710 (t-m32) and the 710 asme (t-m32 asme) models share the same components. 1 0 3 1 0 1 1 0 2 4 0 1 1 0 4 1 0 5 1 5 2 7 0 7 1 5 2 1 0 6 1 0 7 1 5 1 1 0 8 1 0 9 1 1 0 1 5 2 1 5 2 1 1 1 1 5 2 1 1 2 1 1 3 1 5 3 1 1 4 1 1 5 1 5 4 1 1 6 1 1 7 1 5 5 1 1 8 1 1 9 1 2 1 7 0 4 1 5 2...

  • Page 47

    - 47 - water way assembly 710 asme (t-m32 asme) 710 (t-m32) other than part# 211, part# 439, part# 440 and part# 441, the 710 (t-m32) and the 710 asme (t-m32 asme) models share the same components. To t he heat exc hang er 2 1 0 1 5 0 4 0 4 4 0 5 4 0 6 4 0 7 4 0 8 4 0 9 4 1 0 0 5 2 0 5 2 4 1 7 4 1 6...

  • Page 48: Parts List

    - 48 - parts list item# description part# 710 models t-m32 models 001 002 003 004 005 case assembly front cover air blockage plate bracket back guard panel 319143-287 319143-303 319143-285 319143-225 319143-283 em389 em431 em386 em104 em384 006 007 008 010 011 junction box fixing plate rubber bush o...

  • Page 49

    - 49 - item# description part# 710 models t-m32 models 210 211 heat exchanger assembly for 710 (t-m32) heat exchanger assembly for 710 asme (t-m32 asme) 319143-302 319143-314 em415 em45c 401 402 403 404 405 silicon ring fuse fixing plate 18 overheat-cut-off-fuse pipe heater 122 heater fixing plate 3...

  • Page 50: Output Temperature Chart

    - 50 - output temperature vs. Gpm (max. 9.0 gpm) with various ground water temperature 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 output hot water temperature out p u t ho t w a te r g p m 40 f 50 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...

  • Page 51: Limited Warranty

    - 51 - limited warranty 1. The manufacturer warrants this product against defects in materials or workmanship as described in this document if installed within the united states or canada. The manufacturer or its authorized service representative will, at its sole discretion, repair or replace any f...

  • Page 52

    - 52 -  water: incorrect water pipe sizing, water pressures that fall outside the product’s specified range, recirculation flow rates that fall outside the product’s specified range (air removal), and/or lack of proper methods of air removal in a closed-loop, circulation system. (see installation m...