Takagi T-M32 User Manual

T-M32 / T-M32 ASME

On-Demand Water Heater Installation Manual and Owner’s Guide

WARNING

This product 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.

For supplying potable hot water

ASME model ONLY

Suitable for potable water heating and space heating

Mobius Water Heater™

Model T-M32 / T-M32 ASME

FEATURING

• ENDLESS HOT WATER

• ON-DEMAND USAGE

• COMPACT, SPACE SAVING

• ENERGY CONSERVATION

• COMPUTERIZED SAFETY

• NO PILOT LIGHT

• EASY LINK SYSTEM

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 Whatney Irvine, CA 92618 Toll Free: (888) 882-5244 USA Toll Free: (877) 877-4953 CANADA

CONTENTS

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 Operation……………………….. NORMAL OPERATION………………….

Normal Operation…………………......

Flow…………………………………….. Freeze Protection System…………... Temperature Settings………………….

Maintenance and Service………..……. GENERAL TROUBLESHOOTING… … . WIRING DIAGRAM …………………… .. OPERATING SAFETY…………………..

APPLICATIONS………………………......

Re-Circulation…………………………..

Dual-Purpose Heating……………......

ADDITIONAL CLEARNCES…………….. OPTIONAL ITEMS………...…………….. COMPONENTS DIAGRAM……………. PARTS LIST……………………………… OUTPUT TEMPERATURE CHART…… PRODUCT REGISTRATION AND

LIMITED WARRANTY……………………

Takagi reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

SPECIFICATIONS

Natural Gas Input

(Operating Range)

3 4

LPG Input

(Operating Range)

Gas Connection 3/4” NPT

Water Connections 3/4” NPT

Water Pressure 15 - 150 psi *

9 10

Natural Gas Pressure Inlet

11 15

LP Gas

Pressure Inlet

Manifold Pressure Natural: 2.35” WC

19 20

Weight 56 lbs.

Dimensions

24 28

Ignition Electric Ignition

30 31 31 33

Electric

33 34 35 36 39

*40 psi or above is recommended for maximum flow

NOTE

*All references to the T-M32 also refer to the

T-M32 ASME model

*Check the rating plate to ensure this product

matches your specifications.

*In accordance with ANSI Z21.10.3 and

SCAQMD Rule 1146.2, CO emission does not

exceed 400 PPM for normal input

- 2 -

Supply 120VAC (60Hz)

Consumption

Min: 24,000 Btu/h

Max: 240,000 Btu/h

Min: 24,000 Btu/h

Max: 240,000 Btu/h

Min. 5.0” WC

Max. 10.5” WC

Min. 8.0” WC

Max. 14.0” WC

Propane: 3.55” WC

H23.6”×W18.5”×D8.9”

Operation

Standby

FreezeProtection

112 W (0.93 A)

8.9 W (0.07 A)

187 W (1.56 A)

INTRODUCTION

pply

• 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 any problems or questions regarding this equipment, consult with Takagi or its

local re

• The T-M32 Water Heater is an on-demand, tankless water heater designed to efficiently su

• The principle behind the T-M32 Water Heater is simple:

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 water flow to produce the right amount of hot water at the correct temperature.

7. When the tap is turned off, the unit shuts down.

resentative.

endless hot water for yourneeds.

*This diagram illustrates Takagi’s tankless water heater design concepts only and is not accurate to the T-M32’s physical description.

- 3 -

SAFETY GUIDELINES

• Installation and service must be performed by a qualified installer (for

example, a licensed plumber or gas fitter), otherwise the warranty by Takagi will be void.

• The installer (licensed professional) is responsible for the correct

WARNING

PLEASE READ THIS MANUAL CAREFULLY AND FOLLOW ALL DIRECTIONS.

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 your T-M32 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 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.

installation of your Mobius T-M32 Water Heater and for compliance with all national, state/provincial, and local codes.

GENERAL

Rating plate

WARNING

• Water temperatures over 125ºF 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

Prohibited

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.

- 4 -

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

hardness that leads to scale formation and/or corrosion may affect/damage the water heater. Hard water scaling and/or corrosion must be avoided or controlled by proper water treatment.

CAUTION

WARNING

• TAKAGI recommends using the Takagi direct vent kit, when the water

heater is installed in a beauty salon. Some chemicals used in a beauty salon may affect the flame sensor. Water heater may not work properly.

• Although the T-M32 is designed to operate with minimal sound, TAKAGI

does not recommend installing the unit on a wall adjacent 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, ensure that it will not restrict the combustion air flow.

• TAKAGI does not recommend installing unit in an attic due to safety

issues. If you install your T-M32 in an attic:

• Make sure your unit will have enough combustion air and proper

ventilation.

• Keep the area around your T-M32 clean. When dust collects on the

flame sensor, the water heater will shut down on errors.

• If the above conditions cannot be met, use the direct vent conversion kit

TM-DV32.

• Locate unit for easy access for service and maintenance.

• A drain pan is required to be installed under the water heater in case of

leaks.

- 5 -

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. 7 and p. 9 for proper clearances.

3. The electrical connection requires a means of disconnection, to terminate power to the water heater for servicing and safety purposes.

4. If you will be installing the unit in a contaminated area with a high level of dust, sand, flour, aerosols or other contaminants/chemicals, they can become airborne and enter and build up within the fan and burner causing damage to the unit. In those environments (e.g. residential or commercial laundry facilities, hair salons, pet salons, chemical plants etc.), please purchase the optional TM-DV32 direct vent conversion kit and convert the T-M32 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 burning of the gas. Regularly ensure that the area around the unit is dust- or debris-free; 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 meets the required distance by local code from any doorway or opening to prevent exhaust from entering a building (refer to p. 14).

INCLUDED ACCESSORIES

Check that the installation manual, the communication cable, and the warranty card are included with the unit.

Items

Manual

Communication Cable

Warranty Card

Qty: 1

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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 Z223.1/NFPA 54 in the USA or CAN/CSA B149.1 Natural Gas, Propane Installation Code in Canada.

2. Install outdoors only in areas with mild, temperate climates.

3. Ensure that the unit is set for outdoor installation. Locate the left bank of dipswitches to the bottom of the 7-Seg. LED on the computer board. The ‘OUT’ dipswitch on that

bank should be switched to its ‘ON’ (right) position (Do not adjust the right bank of dipswitches).

7-Seg LED

Left bank of dipswitches

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.

Make sure power to the unit is turned OFF before changing the dipswitch settings.

The dark square is the direction the dipswitch should be set to.

TMP1 TMP2 TMP3 MODE DIRE

OUT

D-PRT

MST

Left Bank of Dipswitches

1 2 3 4 5 6 7 8

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:

There is a 2” clearance from the left and right sides of the unit to combustible and noncombustible surfaces. However, if any

*Side 24”

*Front 24”

Top 36”

portion or area of the surface is exposed to the exhaust fumes (i.e. directly to the sides of the vent cap), that surface must be at least 24” awa

Side 2”

Keep the clearances.

Front 4”

(24” Recommended

for Maintenance)

- 7 -

Bottom 12”

*Side 24”

Back 1”

Side 2”

WARNING FOR INSTALLAUON LOCATIONS

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.

Prohibited Prohibited

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 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.

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)

3 Ft.

Do not install next to a dryer or any source of airborne debris that can be trapped inside the combustion chamber, unless the system is direct vented.

- 8 -

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 indoors, the T-M32 water heater shall be located in an area to maintain the following minimum clearances around the unit:

Keep the following clearances.

(24” Recommended

for Maintenance)

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.

Minimum recommended air supply opening size for water heater:

Water heater size

When drawing outside the building

make-up air from

Side 2”

Front 4”

When drawing make-up the building (from other rooms within)

Top 12”

Back 1”

Side 2”

Bottom 12”

air from inside

240 Sq. IN

MAX 240,000 BTU

16.0 Sq. IN

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.

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 enclosed area. This opening should never be less than 199 sq. in.

Combustible Air Supplied by Mechanical fan or Make up air device

The T-M32 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, the blower and water heater must be set up so that the water heater cannot fire unless the blower is operating. Possible methods include the use of external flow sensors/transmitters and relays.

- 9 -

DIRECT INTAKE VENT SYSTEM

This T-M32 water heater may be converted to a direct vent (sealed combustion) appliance by installing an adapter (Part No. TM-DV32) which will bring all required combustible air from outside the building. When installing the TM-DV32 conversion kit, please follow all instructions included with the kit.

• The T-M32 must be installed in a location where the proper amount of combustible air will be available to it at all times without obstructions.

• If used as a direct vent 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 exhaust vent and the intake pipe parallel.

• The TM-DV32 Direct Vent Kit has an “INLET” mark as shown below. Do not

reverse the INLET and the EXHAUST connections when installing vent pipes.

7-Seg LED

Left bank of dipswitches

Right bank of dipswitches

Make sure power to the unit is turned OFF before changing the dipswitch settings.

The dark square is the direction the dipswitch should be set to.

TMP1 TMP2 TMP3 MODE DIRE

OUT

D-PRT

MST

1 2 3 4 5 6 7 8

Left Bank of Dipswitches

INLET

TM-DV32 Direct Vent Conversion Kit

EXHAUST

“INLET” mark

TM-DV32 DIRECT VENT CONVERSION KIT

- 10 -

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 Fuel Gas Code: ANSI Z223.1, All applicable local building codes, Section 7 of CAN/CSA B149.1 Natural Gas in Canada, Propane Installation Code in Canada.

EXHAUST VENT

This is a Category III appliance and must be vented accordingly. The vent system must be sealed air tight. All seams and joints without gaskets must be sealed with high heat resistant silicone sealant or UL listed aluminum adhesive tape having a minimum temperature rating of 350ºF. For best results, a vent system should be as short and straight as possible.

1. This Takagi water heater is a Category III appliance and must be vented accordingly with any 4” vent approved for use with Category III or Special BH type gas vent.

2. TAKAGI recommends the “T-Vent” line manufactured by TAKAGI (Refer to Takagi’s “T-Vent” brochure for details). However, the following are also UL listed manufacturers: ProTech Systems 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 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. Do not use more than 5 elbows.

Diameter Max. No. of Elbow Max. Vertical or Horizontal run in Length

4” 5 Ea. 50 ft

*For each elbow added, deduct 5 ft. from max. vent length.

No. of Elbows Max. Vertical or Horizontal Length

0 50 ft. 1 45 ft. 2 40 ft. 5 25 ft.

6. When the horizontal vent run exceeds 5 ft., support the vent run at 3 ft. intervals with

overhead hangars.

7. Takagi will not be responsible for any damage to the water heater caused by condensation from the vent. Installing a condensate drip is recommended. Please refer to p. 13 for the diagrams.

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.

- 11 -

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 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/CSAB149.1 and local applicable codes.

• A proper sidewall vent terminator is recommended when the water heater is vented through

a sidewall. If the T-M32 is converted to a direct-vent unit, a proper sidewall direct-vent terminator is to be used.

General rules for venting the T-M32 water heater are:

1. Place the water heater as close 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. 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 locating the water heater vent terminator near any air intake devices. These fans

can pick up the exhaust flue products from the gas appliance and return them to the building. This can create a health hazard.

9. Avoid using an oversized vent pipe or using extremely long runs of the pipe.

10. Locate the vent terminator so that it cannot be blocked by any debris, at any time. 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.

11. For rooftop venting, a rain cap must be installed.

12. TAKAGI recommends the “T-Vent” line manufactured by TAKAGI (Refer to Takagi’s

“T-Vent” brochure for details). However, the following are also UL listed manufacturers: ProTech Systems Inc. (FasNSeal), Flex-L Inc., Z-Flex Inc. (Z-Vent III), Metal-Fab Inc., and Heat-Fab Inc. (Saf-T Vent).

- 12 -

Horizontal Installation Diagram

Vertical Condensation Drain (Install according to local codes)

TK-BF01 Backflow preventor (Recommended for freezing weather conditions: 36°F and below)

Vertical Installation Diagram

Vertical Condensation Drain (Install according to local codes)

Roof

Rain Cap

Roof Flashing

TK-BF01 Backflow preventor (Recommended for freezing weather conditions: 36°F and below)

Wall

Sidewall Vent Terminator

• 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 manufacturer’s instruction and local code.

• Do not common vent or 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.

- 13 -

VENT CLEARANCES

Canada U.S.A

Clearance above grade, veranda, porch,

deck, or balcony. Clearance to window or door that may be

opened. 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. Clearance to unventilated soffit * * *

Clearance to outside corner * * *

Clearance to inside corner * * *

Clearance to each side of center line

extended above meter/regulator assembly Clearance to service regulator vent outlet. 3 feet * *

Clearance to non-mechanical air supply inlet to building or the combustion air inlet

to any other application. Clearance to mechanical air supply inlet. 6 feet 3 feet 3 feet

Clearance above paved sidewalk or paved driveway located on public

property. 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.

Direct vent and

other than Direct

Vent

1 foot 1 foot 1 foot

3 feet 1 foot

* * *

3 feet * *

3 feet 1 foot

7 feet * 7 feet

1 foot * *

Direct vent Other than Direct Vent

4 feet from below or side opening. 1 foot

from above opening.

4 feet from below or side opening. 1 foot

from above opening.

- 14 -

GAS SUPPLY AND GAS PIPE SIZING

1. Turn off all electric power to the water heater if service is to be performed.

TO TURN OFF GAS TO APPLIANCE

2. Turn the manual gas valve located on the outside of the unit clockwise 3 to the off position.

WARNING: Conversion of this unit from natural gas to propane or vise versa 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. Takagi is not liable for any property and/or personal damage

resulting from unauthorized conversions.

*Check that the type of gas matches the rating plate first.

The minimum and maximum inlet gas pressures are:

Natural Gas Min. 5.0” WC - Max. 10.5” WC

Propane Gas Min. 8.0” WC - Max. 14.0” WC

2. Gas pressure below this specified range for the T-M32 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. gas regulators used are operating properly and are providing gas pressures within the specified range shown above.

These pressures are measured when the T-M32 is in full operation.

Ensure that any and all

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 pressure. Below are instructions on how to check the inlet gas pressure.

1. Shut off the manual gas valve on the supply gas line.

2. Open a faucet. The unit should turn on and the gas in the

gas pipe line should purge. Leave the faucet on to keep the unit running until the unit shut down due to lack of gas supply. Then shut the faucet off.

3. Remove the screw for the pressure port located on the

gas inlet of the T-M32 shown in the diagram to the right.

4. Connect the manometer to the pressure port.

5. Re-open the manual gas valve. Check to see that there

are no gas leaks.

6. Open some of the fixtures that use the highest flow rate to

turn on the T-M32.

7. Check the inlet gas pressure. When T-M32 is on a

maximum burn, the manometer should read from 5.0” to

10.5” WC for Natural gas, from 8.0” to 14.0” WC for Liquid Propane.

THIS IS ONLY TO BE DONE BY A LICENSED PROFESSIONAL.

- 15 -

Size the gas pipe appropriately to supply the necessary volume of gas required for the T-M32 (240,000 BTU/H for Natural Gas or 240,000 BTU/H for Liquid Propane) using ANSI233.1/NAPA 54 in the USA or CAN/CSA B149.1 in Canada or local codes. Otherwise, flow capabilities and output temperatures will be limited.

1. Install a manual gas shut-off valve between the T-M32 and the gas supply line.

2. 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.

3. Always purge the gas line of any debris and/or water before connecting to the gas inlet.

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 1000 BTU/Cubic Ft.: T-M32 requires 240 Cubic Ft./hr. Unit: Cubic Feet per Hour

Pipe Size

¾”

1” 1 ¼” 1 ½”

2” 2 ½”

3”

10' 20' 30' 40' 50' 60' 70' 80' 90' 100' 125' 150' 200'

363 249 200 171 152 138 127 118 111 104 93 84 72

684 470 377 323 286 259 239 222 208 197 174 158 135 1404 965 775 663 588 532 490 456 428 404 358 324 278 2103 1445 1161 993 880 798 734 683 641 605 536 486 416 4050 2784 2235 1913 1696 1536 1413 1315 1234 1165 1033 936 801 6455 4437 3563 3049 2703 2449 2253 2096 1966 1857 1646 1492 1277

11412 7843 6299 5391 4778 4329 3983 3705 3476 3284 2910 2637 2257

Length of Pipe

Propane (LP) Gas Supply Piping

Maximum Capacity of Propane (LP) Gas Based on 11” WC supply pressure at a 1.0” WC pressure drop

Pipe Size

inches

¾”

1” 1 ¼” 1 ½”

2”

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 1071 732 590 504 448 409 378 346 322 307 275 252 213 2205 1496 1212 1039 913 834 771 724 677 630 567 511 440 3307 2299 1858 1559 1417 1275 1181 1086 1023 976 866 787 675 6221 4331 3465 2992 2646 2394 2205 2047 1921 1811 1606 1496 1260

Gas Sizing Example

(Natural Gas)

T-M32

240,000BTU

Dryer

35,000BTU

5’ Length

1-1/4” Pipe Size

5’ Length

1-1/4” Pipe Size

Gas Meter

10’ Length

3/4” Pipe Size

10’ Length

1” Pipe Size

3/4” Pipe Size

10’ Length

3/4” Pipe Size

Furnace

120,000BTU

15’ Length

10’ Length

1/2” Pipe Size

15’ Length

1/2” Pipe Size

Range

65,000BTU

Length in Feet

Based on Energy Content of 1000BTU/Cubic Ft: Divide each appliance’s BTU requirement by 1000BTU to get

the appliances Cubic Ft. requirement. Takagi into account the distance the appliance is from the gas

meter, look in the above gas chart to properly size the line. For sections of the gas line supplying gas to more than one

appliance (Ex: Point A to Point B), add up the cubic ft. requirements of the appliances that are being supplied by that section, and size to the farthest appliance.

For Example: The section from A to B supplies gas to the furnace, range, and dryer. Adding up the BTU requirements and dividing by 1000 yields a cubic ft. requirement of 220 cubic ft. of gas. The farthest appliance is the range, which is 50 ft. away from the meter. Looking at the above chart, and under the column of 50ft., Section A to B needs to be 1” in order to supply 220 cubic ft.

- 16 -

Unit: kBTU per Hour

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.

1. All pipes, pipe fittings, valves and other components, including soldering materials, must be suitable for potable water systems.

2. 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-M32.

3. In addition, a manual shut off valve 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 within the cold inlet to trap debris from entering your heater. This

will need to be cleaned periodically to maintain optimum flow.

FOR YOUR SAFETY, READ BEFORE OPERATING:

CAUTION: Do not reverse the hot outlet and cold inlet connections to the

T-M32 Water Heater. This will not activate the water heater.

- 17 -

PRESSURE RELIEF VALVE

The Mobius T-M32 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.

1. This unit does not come with an approved pressure relief valve.

2. An approved pressure relief valve must be installed on the hot water outlet.

3. The pressure relief valve must conform to ANSI Z21.22 or CAN 1-4.4 and installation must

follow local code.

4. The discharge capacity must be at least 240,000 BTU/h.

5. The pressure relief valve needs to be rated for a maximum of 150 psi.

6. The 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 periodically, this may be due to a defective thermal expansion tank or defective pressure relief valve.

9. The pressure relief valve must be manually operated periodically to check for correct operation.

10. For the T-M32 ASME model, the pressure relief valve must conform to and be installed in accordance with ASME code.

As Close as

Possible

Pressure Relief

Valve

Hot outlet

Cold inlet

Gas

- 18 -

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 Code, Part 1, in Canada.

CAUTION: When servicing or replacing parts within the T-M32, 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.

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 codes).

• Connect the power supply to the T-M32 exactly as shown in the wiring diagram;

3. A green screw is provided in the junction box to ground the connection.

4. Can be hardwired or wired to a plug-in.

5. The use of a surge protector is recommended in order to protect the unit from power

surges.

Connect Power supply

AC120V 60Hz

Ground

- 19 -

REMOTE CONTROLLER CONNECTION

1) Disconnect power supply from the T-M32.

2) Take off the T-M32’s front cover.

3) Please find the remote control terminal using the picture below (located around the lower

right-hand side of the T-M32).

4) Open the plastic cover of the TM-RE30, and then attach the fork terminal to the connector

base of the backside the TM-RE30 with two screws. Make sure the terminals 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.

*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

*For details on the connection to the TM-RE30, refer to the TM-RE30’s Installation Manual.

Remote controller terminal inside T-M32

(No polarity)

Front of remote

Connect to these terminals

Connect other end to these terminals

Back of remote

- 20 -

PUMP CONNNECTION

The T-M32 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 T-M32 pump control port is a “normallyopen” dry contact, and therefore needs additional components to properly control a recirculation pump. To control a recirculation pump, connect the pump to the pump connector in the T-M32 as shown in the diagram below. (In a multi-unit system, connect the pump ONLY to the “MASTER” unit.) The pump is to be connected 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 “SLAVE” units, the pump will not work.

These components are not included with Takagi water heaters and are external to the unit. They must be acquired separately.

Connect to this “Pump” connector.

Power supply for relay

Power supply for pump AC120V AC220V etc

AC120V AC220V etc for relay

Thermal relay

Recirculation

pump

- 21 -

PUMP CONTROL MODE

The T-M32 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 T-M32. (See the next page)

A) Recirculation Control: No. 6 ON

Feature: Water heaters can provide hot water as soon as possible like a recirculation usage. Function: The pump is set only to run when the temperature of the water in the re-circulation

loop is much lower than the set temperature of the T-M32. The pump will run for about 1 minute in every 30 minutes to determine whether the water temperature in the whole recirculation loop is lower than 9°F from the set temperature or not. If the water temperature is lower than 9°F from the set temperature, the pump will remain running until the water in the loop reach the set temperature. Otherwise, the pump will stop for another 30 minutes. If the inlet thermistor of water heaters detects that the water temperature is lower than 9°F from the set temperature before those 30 minutes have elapsed, the pump will activate immediately and remain running until 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 heaters) will always remain on. After hot water temperature reach the temperature above, the T-M32 makes the Water heaters to adjust the water flow to be less than 2.6 GPM, in order to detect temperature in the system.

Note: In this mode, the T-M32 will not provide the pump control. The termination of the pump is kept ON position continually.

C) Energy Conserving Recirculation: No.6 and No.7 ON

Feature: Save Energy Mode in Recirculation Control by keeping the water temperature in

the loop system hot during circulation with Recirculation Control and Pump Control, so it will cut down the cost of the gas and electricity.

Function: Energy Conserving Recirculation and the Pump Control is similar to the “Recirculation Control” explained above. The hot water temperature in the loop during recirculation is kept at maximum 122°F (50 °C) even if the set temperature of T-M32 is 130°F (55°C) or above.

Note: The recirculation pump needs to be connected to the pump terminal of the T-M32.

- 22 -

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 TM-RE30. Function: If a pump is connected to the pump control terminal and both No.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 TM32. 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

1 2345 786

C) Energy

Conserving

Recirculation

D) Normal

Control

(Default)

1 2345 786

The dark squares indicate the direction the dipswitches should be set to.

- 23 -

EASY LINK SYSTEM

The T-M32 can be connected with other T-M32’s 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 can be up to 250ft. long all together.

You can manifold from 2 units to 4 units without a multi-system controller. A 4-unit system has full automatic modulation between 24,000 BTU/h and 960,000 BTU/h.

Gas

Cold

Hot

CAUTION

7-Seg LED

Left bank of dipswitches

Right bank of dipswitches

• 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.

Do not touch the MultiSystem connectors.

Easy Link connectors are on each unit’s computer board.

To change the dipswitch settings for the Easy Link system, locate the left bank of dipswitches below the 7seg LED.

Do not adjust the right bank of dipswitches.

- 24 -

Easy Link Connection Procedures

1. Choose one of your units as the “MASTER” unit.

2. “The MASTER” Locate the left bank of dipswitches to the lower of the 7-seg. LED on the computer board of

the T-M32 that you select to be the “MASTER” unit. Change dipswitch No. 8 to “ON”. Do not change any of the dipswitches on the “SLAVE” units.

3. Between the “MASTER” and the “SLAVE-1” Connect the “MASTER connector” of the “MASTER unit” to the

“[1] connector” of the

“SLAVE-1” unit.

4. Between the “SLAVE-1” and the “SLAVE-2” Connect the “[2] connector

” of the “SLAVE-1” unit to the “[1] connector” of the SLAVE-2”

unit.

5. Between the “SLAVE-2” and the “SLAVE-3” Connect the

“[2] 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

The dark squares indicate the direction the dipswitches should be set to.

MASTER unit

F F

Left bank of Dipswitches

Connectors

1 2

2 3

3 4

4 5

5 6

6 7

7 8

Communication cable

343 4

M A

A S

S T

T E

E R

1 2

SLAVE-1 unit

Left bank of Dipswitches

1 2

2 3

3 4

4 5

5 6

6 7

7 8

Connectors

343 4

M A

A S

S T

T E

E R

1 2

SLAVE-2 unit SLAVE-3 unit

Left bank of Dipswitches

1 2

2 3

3 4

6 7

7 8

Connectors

343 4

M A

A S

S T

T E

E R

1 2

Left bank of Dipswitches

1 2

2 3

3 4

4 5

5 6

6 7

7 8

Connectors

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.

Wrong dipswitch setting on the “MASTER” unit

MASTER uni

F F

Left bank of Dipswitches

1 2

2 3

3 4

4 5

5 6

6 7

7 8

Connectors

343 4

M A

A S

S T

T E

E R

1 2

Left bank of Dipswitches

SLAVE-1 unit

Connectors

343 4

M A

A S

S T

T E

E R

1 2

Communication cable

343 4

M A

A S

S T

T E

E R

1 2

- 25 -

CAUTION

• If you connect the connector to the connector

” of the “MASTER” unit

“MASTER (or [1])

” of the “SLAVE-1” unit,

the system will not work as the

“[1] (or [2])

Left bank of Dipswitches

easy link system. The units will work as individual units.

Wrong connection between the unit and the unit

“MASTER”

“SLAVE-1”

Left bank of Dipswitches

MASTER uni

Connectors

343 4

M A

A S

S T

T E

E R

1 2

Communication cable

Connectors

343 4

M A

A S

S T

T E

E R

SLAVE-1 unit

Left bank of Dipswitches

SLAVE-1 unit

Left bank of Dipswitches

Connectors

343 4

M A

A S

S T

T E

E R

1 2

343 4

M A

A S

S T

T E

E R

1 2

Communication cable

• If the TM-RE30 or the TM-RE10 remote controller (optional) is used, it has to be connected to the “MASTER” unit. If the TM-RE30 or the TM-RE10 is connected to a “SLAVE” unit,

will only control that particular individual “SLAVE” unit and will not control the Easy Link system as a whole.

Wrong connection between the unit and the TM-RE30 (or TM-RE10)

“SLAVE”

MASTER uni

Left bank of Dipswitches

1 2

2 3

3 4

4 5

5 6

6 7

7 8

Connectors

343 4

M A

A S

S T

T E

E R

1 2

Left bank of Dipswitches

SLAVE unit

Connectors

1 2

2 3

3 4

4 5

5 6

6 7

7 8

M A

A S

S T

T E

E R

1 2

343 4

TM-RE30 or TM-RE10

Communication cable

• The TM-RE30 or the TM-RE10 (optional remote controller) is not required

for the Easy Link system.

• If running the Easy Link system without the TM-RE30 or the TM-RE10,

please make sure the dipswitch settings for the 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 TM-RE30 or the TM-RE10 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 same settings on all the units.

- 26 -

CAUTION

• If you connect the “MASTER connector” of the “MASTER” unit to the “[3] connector” of the “SLAVE-1” unit, the “MASTER” unit and the “SLAVE-1”unit will display “761” error code.

• If you connect the “[2] connector of the “SLAVE-1”unit to the “[3] connector” of the “SLAVE-2” unit, the “MASTER” unit and the “SLAVE-2”unit will display “761” error code.

MASTER unit SLAVE-1 unit SLAVE-2 unit

Left bank of Dipswitches

1 2

2 3

3 4

4 5

5 6

6 7

7 8

Connectors

343 4

M A

A S

S T

T E

E R

1 2

Left bank of Dipswitches

Communication cable

Wrong connection between the “SLAVE-1” unit and the “SLAVE-2”unit

O F

F F

E E 3 2 1 T T

O F

F F

Left bank of Dipswitches

Connectors

1 2

6 7

7 8

MASTER uni

Connectors

1 2

2 3

3 4

4 5

5 6

6 7

7 8

M A

A S

S T

T E

E R

1 2

343 4

SLAVE-1 unit

Left bank of Dipswitches

Communication cable

Wrong connection between the

“

MASTER” unit and the “SLAVE-1” unit

F F

343 4

M A

A S

S T

T E

E R

1 2

Left bank of Dipswitches

1 2

2 3

3 4

4 5

5 6

6 7

7 8

Connectors

343 4

M A

A S

S T

T E

E R

1 2

343 4

M A

A S

S T

T E

E R

1 2

• If you connect the

“MASTER connector” of the “SLAVE-1” unit to the “[1] 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.

MASTER unit

Left bank of Dipswitches

Communication cable

Connectors

343 4

M A

A S

S T

T E

E R

1 2

Wrong connection between the “SLAVE-1” unit and the

SLAVE-1 unit

Left bank of Dipswitches

“SLAVE-2” unit

Connectors

343 4

M A

A S

S T

T E

E R

1 2

Left bank of Dipswitches

SLAVE-2 unit

1 2

2 3

3 4

4 5

5 6

6 7

7 8

Connectors

M A

A S

S T

T E

E R

1 2

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. Do not splice or modify connectors.

Prohibited

343 4

- 27 -

MULTI-UNIT SYSTEM FOR LARGE VOLUMES

Multiple T-M32’s can be combined for a Multi-Unit system, along with the Multiple Unit Controller and Remote Controller (Parts TM-MC01 and TM-RE30). Each set of controllers (one TM-MC01 and one 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.

MOBIUS Water Heater Model T-M32

M A

A S

S T

T E

E R

1 2

Hot Out

Cold IN

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-Unit Controller (TM-MC01) and Temperature Remote Controller (TM-RE30 or TM-RE10) wiring:

Left bank of

Left bank of Dipswitches

Dipswitches

The dark squares indicate the direction the dipswitches should be set to.

This is the connection diagram between T-M32 and TM-MC01 for 2 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 TMMC01 automatically allocates the unit # (1-20) to each water heater that is part of the Multi-unit system.

Unit 1 Unit2 Unit3

F F

T R

1 2

2 3

3 4

4 5

5 6

6 7

7 8

Connectors

M A

A S

S T

T E

E R

1 2

Communication ca ble

Left bank of

Left bank of Dipswitches

Dipswitches

1 2

2 3

3 4

4 5

5 6

6 7

7 8

Connectors

M A

A S

S T

T E

E R

1 2

Left bank of Dipswitches

1 2

2 3

3 4

4 5

5 6

6 7

7 8

TM-RE30 or TM-RE10

Terminals for

Water heaters

- 28 -

Connectors

TM-MC01

In a Multi-Unit system, connect the “[3] connector” and the “[4] connector” with the communication cable.

Wire [3] (Male Adapter) and [4] (Female Adapter)

Please refer to the TM-MC01 manual for further instructions of the Multi-Unit system.

T-M32 Comunication Cables are included with the T-M32. The Cables use 18 gage wire and can be up to 250 ft. long.

7-Seg LED

Left bank of dipswitches

Multi-unit connectors are on each unit’s computer board.

Right bank of dipswitches

Do not touch the Easy Link connectors.

Connecting T-M32’s and the T-M1’s together in a

Multi-Unit System

When the T-M32 and T-M1 are connected together in a multi-unit system to the TMMC01, change dipswitch No. 6 on the TMMC01 computer board to the “ON” position.

The dark squares indicate the direction the dipswitches should be set to.

3456721

Dip switch setting on

the TM-MC01

When the T-M32 is connected to the T-M1 as part of the Multi-unit system with the TM-RE10 or the TM-RE30, you can set the temperature from 99ºF to 167ºF/182ºF as shown below.

Temperatures available under the Default Mode

99 100 102 104 106 108 110 111 113 115 117 122 131 140 158 167

Temperatures available under the High Temperature Mode

99 100 102 104 106 108 110 111 113 122 131 140 149 158 167 182*

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.

- 29 -

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 technician. Forced 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.

• Check the GAS PRESSURE. Refer to p.15.

• Do not try to light the burner manually. It is equipped with an electronic ignition device

which automatically lights the burner.

• 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 damaged parts.

FOR YOUR SAFETY, READ BEFORE OPERATING:

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

instructions.

• If you cannot reach your gas supplier, call the fire department.

1. Once the above checks have been completed, please clean filter of any debris. Refer to p. 35 for instructions.

2. Fully open the manual water control valve on the water supply line.

4. Fully open the manual gas control valve installed.

5. Turn on the 120 volt 60 Hz power supply to the T-M32 water heater.

3. Open a hot water tap to verify that water is flowing to that tap.

Then close the hot water tap.

6. Now you are ready to enjoy hours of endless hot water.

- 30 -

NORMAL OPERATION

• Flow rate to activate the T-M32: 0.5 gallon per minute

• Flow rate to keep the T-M32 running : 0.4 gallon per minute

1. NORMAL OPERATION

WITHOUT REMOTE CONTROLLER

1. Open a hot water tap.

2. Mix cold water with the hot to get

the correct temperature water.

2. NORMAL OPERATION

WITH REMOTE CONTROLLER INSTALLED: TM-RE30 (Optional)

*If the TM-RE10 is used, refer to the TM-RE10 Installation Manual included with the remote.

1. Press the power ON/OFF button. 2. Set temperature. (Example 110°F)

110 115 120 125 130 135 140 145 150 155 160 165 170 175 180 185

When ON, green LED is lit.

The temperature and the time will be displayed on the remote controller.

3. Close the hot water tap.

100 105 110 115 120 125 130 135 140 145 150 155 160 165 170 175

Temperatures available under the Default Mode

Temperatures available under the High Temperature Mode

DO NOT set to 185 °F if you use your T-M32 in recirculation system. Refer to p.34

3. Open a hot water tap. Mix cold water with the hot if you need.

Lamp is ON

4. Close the hot water tap.

Lamp is OFF

(unit:°F)

WARNING NING

Hot Water temperatures over 125°F can cause severe burns 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.

- 31 -

*To change the TM-RE30’s mode from Default Mode to High Temperature Mode, please follow the procedures below (the TM-RE30 must be installed prior to operating these procedures):

DO NOT set to 185ºF if you use your T-M32 in a recirculation system.

This will cause damage to the heater and void the warranty.

1. Turn off power to the TM-RE30 by pressing the “ON/OFF" button.

Lamp is OFF to indicate that power is off

2. Simultaneously press and hold both the “HOT” and “COLD” buttons for at least 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-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.

Blink

5. Press the “HOT” button or the “COLD” button to set display to “on”.

Blink

6. Simultaneously press both the “BUZZER” button and the “INFO” button to fix the setting.

7. Make sure display is no longer blinking.

Not blinking

8. Press the “ON/OFF” button to finish the setting.

9. Turn on power to the TM-RE30 by pressing the “ON/OFF” button again.

Lamp is ON

- 32 -

FLOW

• The flow rate through the Mobius T-M32 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.51 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-M32 is rated for 300 gallons per hour (GPH) or 5.0 gallons per minute (GPM) for Natural Gas, and 318 GPH or 5.3 GPM for Liquid Propane, when raising the water temperature by 77°F (from 58°F to 135°F).

• Refer to the chart on the right for typical household plumbing fixture flow rates to determine what the Mobius T-M32 can do in a household application.

Household Flow Rates

Appliance / Use

Lavatory Faucet 1.0 Bath Tub 4.0 – 10.0 Shower 2.0 Kitchen Sink 1.5 Dishwasher 1.5 Washing Machine 4.0

Taken from UPC 2006

Flow Rate (GPM)

FREEZE PROTECTION SYSTEM

• This unit comes equipped with heating blocks to protect it against damages associated with freezing.

• For this freeze protection 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. In cases where power losses can occur, consider the use of a backup 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, 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 location or by strong outside winds. It is the installer’s responsibility to be aware of these issues and take all preventative measures. Takagi will not be responsible for any damage to the heat exchanger as a result of freezing.

• Takagi also highly recommends the use of a back flow vent damper and/or converting the TM32 to a direct-vent unit to minimize the amount of cold air 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:

1. Completely drain the unit of water. Refer to p. 35.

2. Disconnect power to your heater.

This will keep your unit from freezing and being damaged.

CAUTION: Only pipes within the water heater are protected by the freeze protection system. Any water pipes (hot or cold) located outside the unit will not be protected. Properly protect and insulate these pipes from freezing.

- 33 -

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 to change the set temperature with dipswitches, please refer to the diagram on

below. These temperatures are available: 100ºF, 115ºF, 120ºF, 135ºF, 145ºF, 155ºF, 165ºF, and 185ºF.

• If you desire a hot water temperature other than the 8 preset settings, please purchase the optional temperature remote controller (part No. TM-RE30).

• With this optional TM-RE30 you can set the temperature from 100ºF to 185ºF with various increments.

• Please read the instructions carefully prior to installing the TM-RE30, as failure to do so could damage the temperature controller and/or the water heater, which will void the warranty.

• Turn off the power supply to the heater before 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-M32 in a recirculation system. This

will cause damage to the heater and void the warranty.

7-Seg LED

Left bank of dipswitches

Right bank of dipswitches

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.

The dark squares indicate the direction the dipswitches should be set to.

Temperature Settings

Temperature Settings <Left bank of dipswitches>

Left bank of Dipswitch

120 F

1 2 3 4 5 6 7 8

120 ºF (49 ºC) Default

Default

D-PRT

C)(49

100 F

100 ºF (38 ºC)

C)(38

D-PRT

1 2 3 4 5 6 7 8

115 F

115 ºF (46 ºC)

D-PRT

C)(46

1 2 3 4 5 6 7 8

135 ºF

135 F

(57 ºC)

D-PRT

C)(57

1 2 3 4 5 6 7 8

- 34 -

145 F

145 ºF (63 ºC)

D-PRT

155 F

155 ºF

1 2 3 4 5 6 7 8

(68 ºC)

D-PRT

C)(68

C)(63

1 2 3 4 5 6 7 8

165 F

165 ºF (74 ºC)

D-PRT

185 F

185 ºF

1 2 3 4 5 6 7 8

(85 ºC)

D-PRT

C)(85

1 2 3 4 5 6 7 8

C)(74

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 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.

TAKAGI 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 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 the

unit’s drain plugs. Unscrew drain all the water out of the unit.

7. Wait a few minutes to ensure all water has

completely drained from unit.

8. Clean the filter: 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.

9. Securely screw the drain plugs back into place.

Hand- tighten only.

the drain plugs to

Drain Plug

Gas Valve Water Valve

with Filter

- 35 -

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 TM32 to your fixtures depends on the length of piping between the two. The longer the distance or the bigger the pipes, the longer it will take to get hot water.

• If you would like to receive hot water to your fixtures quicker, you may want to consider a hot water recirculation system. (p. 42)

The water is not hot enough.

The water is too hot. The hot water is not available when

a fixture is opened.

• Compare the flow and temperature. See the chart on p. 51.

• Check cross plumbing between cold water lines and hot water lines.

• Is the gas supply valve fully open? (p. 30)

• Is the gas line sized properly? (p. 16)

• Is the gas supply pressure enough? (p. 15)

• Is the set temperature set too low? (p. 31,34)

• Is the set temperature set too high? (p. 31,34)

• 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 the water heater? (p. 31)

• Is the unit frozen?

• Is there enough gas in the tank? (for LP)

The hot water gets cold and stays cold.

Fluctuation in hot water temperature.

• Is the flow rate enough to keep the T-M32 running? (p. 31)

• If there is a recirculation system installed, does the recirculation line have enough check valves?

• Is the gas supply valve fully open? (p. 30)

• Is the filter on cold water inlet clean? (p. 35)

• Are the fixtures clean of debris and obstructions?

• Is the filter on cold water inlet clean? (p. 35)

• Is the gas line sized properly? (p. 16)

• Is the supply gas pressure enough? (p. 15)

• Check for cross connection between cold water

lines and hot water lines.

- 36 -

~ 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 button

turned on? (p. 31)

The fan motor is still spinning after operation has stopped.

Abnormal sounds come from the unit.

~ REMOTE CONTROLLER: TM-RE30 (OPTIONAL) ~

PROBLEM POSSIBLE SOLUTIONS

Remote controller does not display anything when the power button is turned on.

An ERROR code is displayed.

~ EASY LINK SYSTEM ~

PROBLEM POSSIBLE SOLUTIONS

• This is normal. After operation has stopped, the fan motor keeps running for 35 seconds in order to reignite quickly, as well as push all exhaust gas out of the flue.

• Contact TAKAGI.

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)

• Please see the p. 38.

How are the unit numbers assigned?

• For an Easy-Link system, other than the Master Unit (which is always labeled #1), all the other units (the Slave units) are numbered randomly.

• To check which numbers are assigned to which units, push the button on the computer board of a unit as shown below. The unit number will be displayed on the 7-Seg LED.

7-Seg LED

Button to check unit numbers

- 37 -

TROUBLESHOOTING – 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-RE30 (if installed) or on the 7-Seg LED of the central computer board and section computer board to communicate the source of the problem.

• Consult the following chart for the cause of each error code.

7-Seg LED

TM-RE30 (Optional)

Error Code

031 101 111

121 311

321

331

Malfunction description

Dipswitch Setting fault

Warning for 991 Error Code

Ignition Failure

Flame blows out

Output Thermistor Failure

Inlet Thermistor Failure

Mixing Thermistor Failure

Error Code

391 441 510

551 611

631

651

Air-fuel Ratio Rod Failure

Flow Sensor Failure Abnormal Main Gas

Abnormal Gas Solenoid

Abnormal External Pump

Water Control Valve Fault

(Flow Adjustment

Single Unit

• The 7-Seg LED displays the 3-digit error codes one

digit at a time. The TM-RE30 (if installed) displays the whole 3-digit error code at once.

Example If your unit has the “321” error code (inlet thermistor),

• The 7-Seg LED, will flash the 3-digit error code one

• The remote controller, however, will display “321”

digit at a time. The 7-Seg LED will display “3”... “2”... “1”, and then repeat the 3 digits.

on its screen, in its entirety.

Remote

Malfunction

description

Valve Valve

Fan Motor Fault

function)

Error

Code

661 701 721

741 761

991

Water Control Valve Fault

(Bypass function)

Computer board Fault

False Flame Detection

Miscommunication between

T-M32 and TM-RE30

Miscommunication in Easy

link OR Multi-unit system

Abnormal burning

Malfunction description

Easy Link

• The 7-Seg LED on the Master unit displays a 5-digit

number to signify which unit in the Easy Link system has the error, and what the error code is. The 7-Seg LED displays the number one digit at a time.

• The TM-RE30 (if installed) displays a 3-digit number

which also signifies which unit has the error, and what the error code is.

• The unit that has the error in 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”...

• The remote controller, however, will display “232” on

• The 7-Seg LED on Unit #2 will display “3”…. “2”…. “1”,

“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.

its screen in its entirety. The first “2” indicates that Unit #2 has the error. The “32” indicates the first two digits of the “321” error code.

just like in the Single Unit example.

- 38 -

WIRING DIAGRAM

A wiring diagram is located on the inside front panel of the appliance. Electrical Rating: 120 VAC, 60 Hz. 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.

BK: BLACK

P: PURPLE

W: WHITE

Water Control valve

Number display button

Burning lamp

7 Seg LED Dip switch (Adjustable)

MAX button

MIN button

Increase button

Decrease button

Error call button

Mixing thermistor

Inlet thermistor

Output thermistor

SV2

SV1

SV3

O.H.C.F

Hilimit

BL BL BL

LB:LIGHT BLUE

BL: BLUE

R: RED

OFF

1 23456

OFF

123456

7 8

Dip switch (untouchable)

Ground

GFI

BR BR

Pump

Transformer

G: GREEN

Y: YELLOW

GY:GRAY

Fuse box

Proportional Valve

O: ORANGE

BR:BROWN

Sensor

Remote controller port

Air-fuel ratio rod

Ground

Flame rod

Flow

R R

W W

O O

Elect rod

Thermostat

AC120V

Ground

Master

Heater

- 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

automatically lights the burner. Do not try to light the burner by hand.

B. 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.

• Do not try to light any appliance.

• 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 instructions.

• If you cannot reach your gas supplier, call the fire department.

C. 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. 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 attempt to light the burner by hand.

4. Turn the manual gas valve located on the outside of the unit clockwise ↻ to the off position.

5. 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.

6. Turn the manual gas valve located on the outside of the unit counter clockwise ↺ to the ON position.

7. Turn on all electrical power to the water heater.

8. 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.

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 ↻ to the off position.

- 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 containers.

3. Tightly closed

4. Out of children's reach

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.

Vapors:

1. Cannot be seen

2. Vapors are heavier than air

3. Go a long way on the floor

4. Can be carried from other rooms to the main burner by air currents

WARNING

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 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 a 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.

- 41 -

APPLICATIONS

• Toxic chemicals used in boiler treatments such as alcohol, glycerol and glycol group must not be introduced into the system when used for open loop potable water and space heating.

• The T-M32 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.

• 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 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 damage to the water heater. Consult with the glycol maker for specifications prior to use.

Space Heating Applications

WARNING

Re-circulation:

* 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.

This is a concept drawing only.

- 42 -

Dual-purpose hot water heating (Domestic and Space Heating):

Diagramatic Layout of Radiant Heating and Domestic Water Heater Per Mass. Code

Shut-Off Valve

Pressure Gauge

Check

Valves

Cold Inlet

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

Atmospheric Vacuum Breaker

Check Valve

Thermostatic Mixing Valve

Heating Coil

(used with air-handler)

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

Apply Correct Thermal Expansion Tank-Size Per Application

Thermometer

Tempered Water To House

Thermometer

Shut-Off

Valves

Pump (Must Be Sized Properly With Each Application). Pump Shall Run 60 Seconds Every 6 Hours

An approved Pressure Only Relief Valve, Tie to Location approved by Local Code s a nd Must Meet BTU Rating of Takagi Model Used

Takagi

Cold

Hot

Water

Inlet

Outlet

Drain Plug

T-Handle Gas Shut-Off Valve

Water Filter

Unions

4" Gas Exhaust Vent (Discharge Must Comply with Local and State Codes). Can Not Be Common Vented with Other Appliances

Gas Inlet

120 VAC Switch or Outlet

* Size the pump to provide at about 2 GPM through the system at 15 Ft of Hea d 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.

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

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

- 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

2ft.

1ft.

Inside corner

Exhaust termination

For multiple sidewall exhaust terminations (e.g. multi-unit systems), an exhaust termination must be at least 1 ft. away from another exhaust termination. An exhaust 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 equal to the length of the wall).

2ft.

3ft.

Air supply inlet

For direct-vent sidewall terminations that use two separate penetrations for the intake and exhaust, distance the intake and exhaust terminations at least 3 ft. away from each other, no 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 re

1ft.

Inside corner

Direct vent termination

uired distance away

2ft.

Exhaust termination

Exhaust and/or direct-vent sidewall terminations should be at least 2 ft. away from an opposite surface/wall. Do not place the termination directly in front of an opening into a building.

For rooftop terminations

Exhaust termination

A: in accordance with local codes

For multiple-unit rooftop terminations (whether for standard indoor or directvent installations) space all exhaust and intake terminations in accordance with local codes. An exhaust termination must be spaced from a wall or surface in accordance with local codes as well. In the absence of such a code, an exhaust termination must be a horizontal distance of at least 2 ft. awa

from a wall or surface.

Air intake

2ft.

Exhaust termination

Air intake

- 44 -

OPTIONAL ITEMS

1. TM-RE30 Temperature Remote Controller

The TM-RE30 Temperature Remote Controller has two functions . It allows the output temperature from the TM32 to be adjusted within the range of 100 °F to 185 °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 100°F, 105°F, 110°F, 115°F, 120°F, 125°F, 130°F, 135°F, 140°F, 145°F, 150°F, 155°F, 160°F, 165°F, 170°F, 175°F, 180°F and 185°F. See the trouble shooting section for information on possible error codes.

3. TK-BF01 Backflow preventer

The TK-BF01 Backflow preventer prevents the backflow of air through the exhaust vent. 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-DV32 Direct Vent Kit

This kit can be used convert the T-M32 from a conventional vent system to a direct vent (or sealed combustion) system. This is a CSA tested conversion

kit. Install this conversion kit in accordance with Takagi’s installation instructions and any applicable codes.

2. TM-MC01 Multi system controller

The TM-MC01 is the multi- system controller for the T-M32. This can control a maximum of 20 T-M32’s, from 24,000 BTU to 4,800,000 BTU. It also works as a diagnostic tool that will give a concise error code whenever there is a problem with the unit. Usage of the TMMC01 requires having the TMRE30.

4. TM-VC32 Vent Cap

The TM-VC32 Vent Cap is for outdoor 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.

6. TM-PC32 Pipe cover

The TM-PC32 Pipe cover protects the plumbing pipes to the T-M32 from unexpected adjustments. This pipe cover is fixed to the bottom of the T-M32, which hides

the plumbing and improves the visual aspects of the whole installation for the water heater.

7. TK-KPWL4 and TK-KPWH4 T-Vent Wall thimble with Termination

These terminations are used when venting out through the wall and are compatible with the T-Vent pipe system. These terminations are special stainless steel vents for gas appliances and are UL listed as Category II, III and IV. There are two types of terminations: the Louver termination and the Hood termination. For different wall thicknesses, there are 3 ranges of lengths available (refer to the T-Vent

TK-KPWL4

Louver

Termination

TK-KPWH4

Hood

Termination

brochure for details). Install these vent terminations in accordance with Takagi’s installation instructions and any applicable local codes.

- 45 -

COMPONENTS DIAGRAM

Case assembly

Other than the front cover (No.9), all of the T-M32 ASME’s parts are the same as the T-M32.

009

051

050

052

702

051 051 004

003

007

006

011

007

052

010

001

052

005

052

004

T-M32 ASME

050

Computer board assembly

Other than Part# 706, the T-M32 and the T-M32 ASME share the same components.

052

715

714

712

713

052

002

052

718 717

423

705:For T-M32 706:For T-M32 ASME

008

705

706

703

716052

052

708

719701

719

707

711

710 720

704

703 709 052 708

- 46 -

703

115

Burner assembly

The T-M32 and the T-M32 ASME share the same components.

103 101102 401

152

113

153

104105152707

106

107 151 108 109 110

152

124

125

152

152 111

159

152 112

154 116

114

115

118

119 121

152

704

120

122

117

155

704

- 47 -

156

123159

157

158

Water way assembly

Other than Part# 211, Part# 439, Part# 440 and Part# 441, the T-M32 and the T-M32 ASME share the same components.

T-M32

414 420 423 420

431

420

430

414

427

418

416

419

417

052

420

435

415

412

436

414

429

414

428

414

421

414

401

405

426

425

413

432

424

422

419

427

150

210

433414

434419

437

414

409

402

403

150

404

405

T-M32 ASME

414

431

414

419

427

418

416

417

414

440

052

423 420

420

436

429

428

420

435

415

412

414

411

420

439

434

414

413

426

425

427

405

422

419

410052

150

432

424

437

414

406407408

401

402

403

211

433

419

434

150

404

405

437

414

441

411

- 48 -

406407408409410052

PARTS LIST

Other than the front cover (No.9), burner assembly (No.211), hot pipe (No.439), cold pipe (No.440), connection pipe (No.441) and “flow sensor, gas proportional valve connection and thermistors” wire (No.706), all of the T-M32 ASME’s components are the same as the T-M32.

Item# Part# Description Item# Part# Description

001 EM389 Case assembly 002 EM431 Front cover for T-M32 003 EM386 Air blockage plate 004 EM104 Bracket 005 EM384 Back guard panel 121 EM167 Wire cramp 006 EKJ64 Junction box 122 EX00D Gas inlet ring 007 EX00E Fixing plate 123 EM442 Gas inlet 008 EX00B Rubber bush 124 EKK1B Igniter plate 009 EM45H Front cover for T-M32 ASME 125 EKN74 Igniter

010 EM484 011 EKK22 Fastener 152 EW003 Screw M4×10

051 EW001 Screw M4×10 (W/Washer) 153 EW00H Pan screw M4×12 (W/Washer) 052 EW002 Screw M4×10 (Coated) 154 EW00B Screw M3×6 101 EM410 Burner assembly 155 EW008 Screw M3×10 102 EM411 Burner gasket 156 EZP26 O-ring P26 NBR (Black) 103 EM412 Guide plate gasket 157 EW006 Pan screw M4×10 104 EKK2V Burner window 158 EW001 Screw M4×10 (W/Washer) 105 EKK2W Rod holder gasket 159 EW005 Hex head screw M4×8 106 EKK0E Flame rod 160 EW00L Pan screw M4×6 (W/Washer) 107 EKK32 Rod holder 108 EKK0F Igniter rod 109 EKN61 Rod cap 110 EX01Z High voltage ignite cable 111 EM409 Damper 401 EKN50 Silicon ring 112 EX02C Urethane tube 402 EKK26 Fuse fixing plate 18 113 EKK2D Pressure port 403 EM387 Overheat-cut-off-fuse 114 EM379 Fan motor fixing plate 404 EKN86 Pipe heater 122 115 EKK25 Fan motor 405 EKK27 Heater fixing plate 116 EM381 Fan damper 406 EM222 Filter plug 117 EKJ59 Freeze protection thermostat 407 EZM25 O-ring P25 FKM 118 EM435 Manifold gasket A 408 EX006 Water inlet filter 119 EX00F Manifold gasket B 409 EZN21 O-ring JASO# 1021 FKM

Overheat-cut-off-fuse

for combustion chamber

120

151 EW00D Pan screw M4×8

210 EM415

211 EM45C

EM440

EM441

Manifold assembly with gas valve

assembly LP

Manifold assembly with gas valve

assembly NA

Heat exchanger assembly

for T-M32

Heat exchanger assembly

for T-M32 ASME

- 49 -

Item# Part# Description Item# Part# Description

410 EX002 Heater 101 437 EZM18 O-ring P18 FKM 411 EM404 Water inlet 439 EM45E Hot pipe for T-M32 ASME 412 EZN16 O-ring JASO# 1016 FKM 440 EM45D Cold pipe for T-M32 ASME

413 EX021 Heater plate 441 EM45F 414 EX01H Fastener “16AG” 701 EM376 T-M32 PCB

415 EKK2P Inlet heater 702 EM454 Transformer 416 EK239 Outlet drain plug 703 EM463 Junction box inner plate 417 EZM06 O-ring P6 FKM 704 EM392 Gas valve wire

418 EX00H Mixing thermistor 705 EM396

419 EZM04 O-ring P4 FKM 706 EM479

420 EZM16 O-ring P16 FKM 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 425 EK031 Heater fixing plate 16 712 EM207 Ground fault circuit interrupter

426 EM45V Pipe heater 212 713 EM400 Power supply code assembly 427 EW00L Pan screw M4×6 (W/Washer) 714 EM399 428 EZM15 O-ring P15 FKM 715 EM385 Fuse box

429 EKH33 Flow sensor 716 EM377 PCB fixing plate 430 EM391 Hot pipe for T-M32 717 EM398 Remote controller terminal 431 EM45G L joint 718 EW00X Screw M3×12 432 EKN34 Hi-limit switch 719 EX013 Screw M4×12 433 EKK2T Output thermistor 720 EM478 PCB cover 434 EKH30 Fastener “4-11” 435 EKJ02 Water outlet 436 EZN17 O-ring JASO# 1017 FKM

Connection pipe for T-M32

ASME

“Flow sensor, Gas proportional

valve connection and

Thermistors” wire for T-M32

“Flow sensor, Gas proportional

valve connection and

Thermistors” wire for T-M32

ASME

AC100V Transformer

connecting wire

AC120V Transformer

connecting wire

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OUTPUT TEMPERATURE CHART

Out Put Temperature vs. GPM (Max. 9.0 GPM) w ith Various Ground Water Temperature

Correct Gas pipe size can be expect this chart

10.0

9.0

8.0

7.0

6.0

5.0

4.0

3.0

Out Put H o t Water GPM

2.0

1.0

0.0 100 105 110 115 120 125 130 135 140 150 160 165 170 175 180 185

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

40 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

50 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

60 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

70 F

Out put Hot Water Temperature

40 F 50 F 60 F 70 F

*When the set temperature is 150ºF or higher, maximum flow rate is limited to 5.3 GPM.

PRODUCT REGISTRATION AND LIMITED WARRANTY

1. Product registration card or form: The enclosed product registration card must be completed and returned within 45 days of original purchasing date by retail buyer. Copy of proof of original purchasing date must be sent in with the warranty card. The customer may register online with attached proof of original purchasing date via the Internet (www.takagi.com/warranty).

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, and it is not transferable.

THIS WARRANTY COVERS ONLY FAILED MECHANICAL AND ELECTRICAL PARTS DUE TO FACTORY DEFECTS UNDER NORMAL USAGE FOR THE PRODUCT’S INTENDED PURPOSES 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 WILL TAKAGI BE LIABLE FOR ANY SPECIAL, INCIDENTAL, OR INDIRECT CONSEQUENTIAL DAMAGES INCLUDING PROPERTY DAMAGE, PERSONAL DAMAGES, LOSS OF USE, OR INCONVENIENCE. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION MAY NOT APPLY TO YOU.

THE CARD OR FORM IS FOR PRODUCT REGISTRATION.

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3. Warranty for models: T-M32, T-M32 ASME

Application HX

Single Family

Domestic Hot

Water

On-Demand Recirculation

w/ Standard

Recirculation

No Recirculation

Takagi Pump Control

(2)

Aquastat Control

Timer Only

No Pump Control (24 hr.)

Commercial

Multi-Family

Domestic Hot

Water

(4)

Heating

All Types 5 5 1

(1) Heat exchanger (2) An on-demand recirculation system is a system that utilizes either a push-button or other type of manual activation

(as opposed to automatic activation with a temperature sensor or timer) to activate the circulation pump. An ondemand recirculation system can use either the existing cold water line as the return line or have its own dedicated return line.

(3) Limited Labor Coverage

z Takagi will provide for reasonable labor charges associated with warranty repairs or replacements within z Warranty service must be performed b y an authorized Takagi Service Representative. A list of authorized z All warranty claims and warranty service must be authorized and approved by Takagi.

(4) Includes dual-purpose applications (combination heating and domestic).

w/ Standard

Recirculation

one (1) year from the date of purchase. Takagi will only pay directly to the service provider. Takagi Service Representatives is available upon request.

No Recirculation

On-Demand Recirculation

Aquastat Control

Takagi Pump Control

Timer Only

No Pump Control (24 hr.)

(2)

(1)

5 3 3

5 5

3 3

Parts Labor

4. Repair, Replacement or Refund

: The manufacturer or its authorized Service Representative will, at its sole discretion, repair or replace any failed or defective mechanical or electrical parts, or components thereof, or, if the manufacturer or its authorized Service Representative cannot replace said parts, and repair is not commercially practicable, the manufacturer or its authorized Service Representative will refund the purchase price. The manufacturer or its authorized Service Representative may, at its sole discretion, use new, refurbished or reconditioned parts.

5. Limitation on Duration of Implied Warranties:

ANY IMPLIED WARRANTIES ARISING UNDER STATE LAW, INCLUDING THE IMPLIED WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE AND MERCHANTABILITY, SHALL IN NO EVENT EXTEND PAST THE EXPIRATION OF ANY WARRANTY PERIOD HEREUNDER. SOME STATES DO NO ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS, SO THE ABOVE 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 repairs.  Damages due to a lack of maintenance (e.g. water filter, water treatment system, vent blockage, etc.)  Any Takagi product installed in an improper environment (e.g. corrosive, dusty, chemically contaminated, excessive lint,

etc.)

 Freeze damage that occurs without taking proper preventive measures as described in the installation manual  Condensate damage due to improperly installed or lack of a condensate trap (drain).  Any Takagi product not installed in compliance with all applicable local & state codes, ordinances, and good trade

practices.

 Any Takagi product sold to or installed in areas outside of the fifty states (and the District of Columbia) of the United

States of America and Canada.

 Any Takagi product installed in applications that cause the water heater to activate more than 300 times per day (this

averages to an activation every 5 minutes in a 24-hour period).

 Any failures that are not due to defects in materials or workmanship (mechanical and/or electrical parts).  Damages due to improper installation:

• Gas: incorrect gas pipe sizing, incorrect gas meter sizing, incorrect gas type, and/or gas pressures that fall outside the product’s specified range.

• 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 manual for details).

• Electric: supply power voltages that fall outside the product’s specified range.

 Damages 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 into the product

• Introduction of untreated or poorly treated well water into the product

• Introduction of water with pH levels less than 6.5 and greater than 8.5 into the product.

[Unit: Year]

(3)

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33T097-4

Takagi T-M32 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual