Dht Techtanium tt-40 Manual

Installation & Operating Instructions

TO THE INSTALLER: This manual is the

property of the owner and must be affixed

near the water heater for future reference.

TO THE OWNER: This water heater should be

inspected annually by a qualified Service

Agency.

Improper installation, adjustment,

alteration, service or maintenance can

cause injury or property damage. Refer

to this manual. For assistance or addi-

tional information, consult a qualified

Installer or Service Agency.

Do not store or use gasoline or other

flammable vapors and liquids in the

vicinity of this or any other appliance.

Installation and service must be

performed by a qualified Installer or

Service Agency.

FOR YOUR SAFETY

WARNING

indirect water heaters

CONTENTS

I SAFETY

II PRODUCT SELECTION

III PERFORMANCE

RATINGS/SPECS

IV INSTALLATION/PIPING

V WIRING

VI MAINTENANCE

VII WARRANTY

I SAFETY

The warranty on this water heater is in effect only when

the water heater is installed and operated in accordance

with these instructions. The manufacturer of this water

heater will not be liable for any injury or property

damage resulting from failure to comply with these

instructions.

WARNING! This water heater must be installed strictly

in accordance with the instructions enclosed, and local

electrical, fuel and building codes. It is possible that

connections to the water heater, or the water heater

itself may develop leaks. IT IS THEREFORE IMPERA-

TIVE that the water heater be installed so that any

leakage of the tank or related water piping is directed to

an adequate drain in such a way that it cannot damage

the building, furniture, carpeting, adjacent areas, lower

floors of the structure or other property subject to

water damage. This is particularly important if the

water heater is installed in a multi-story building, on

finished flooring or carpeted surfaces. DHT CANNOT BE

HELD LIABLE for damage caused by water from the

water heater, pressure relief valve, or related fittings.

Closets without drains and carpeted areas are examples

of unsuitable locations for any water heater. Select a

location as centralized within the piping system as

possible. The heater should be located in an area not

subject to freezing temperatures in any location

selected. It is recommended that a suitable drain pan be

installed under the water heater. This pan shall be a

minimum of 50mm (2 in.) deep and have a diameter that

is a minimum of 50mm (2 in.) greater than the diameter

of the water heater. Suitable piping shall connect the

drain pan to a properly operating floor drain.

Relief Valve Requirements

Caution: To reduce the risk of excessive pressures and

temperatures in this water heater, install temperature

and pressure protective equipment required by local

codes. It should be no less than a combination tempera-

ture and pressure relief valve certified by a nationally

recognized testing laboratory that maintains periodic

inspection of production of listed equipment or materi-

als, as meeting the latest edition of ANSI Z21.22:

Requirements for Relief Valves and Automatic Gas

Shut-off Devices for Hot Water Supply Systems. This

valve must be marked with a maximum set pressure not

to exceed the marked MAXIMUM working pressure of the

water heater (150 PSI). Install the valve into an opening

provided and marked for this purpose in the water

heater, and orient it or provide tubing so that any

discharge from the valve will exit only within 6 inches

above, or any distance below the structural floor and

cannot contact any live electrical part. The discharge

opening must not be blocked or reduced in size under

any circumstances. The end of the relief pipe opening

should terminate near a floor drain or other suitable

location not subject to blocking or freezing. DO NOT

thread, plug or cap the relief pipe opening.

DANGER

NOTICE

The Techtanium Indirect-fired water heater is deemed to be used in a "commercial

setting" if at any time the unit is operated at a temperature over 150ºF. Refer to warranty

for additional information.

• Water temperatures over 125ºF can cause severe burns

instantly, or death from scalds.

• Children, disabled, and elderly are at the highest risk of

being scalded.

• See instruction manual before setting temperature at water

heater.

• Feel water before bathing or showering.

• Temperature limiting valves are available, see manual.

HOT

BURN

II PRODUCT SELECTION/

PERFORMANCE

1. The following guidelines apply to residential systems only. For commercial or institutional installations contact the

factory directly for assistance.

2. Determine the quantity of domestic hot water required. Factors to consider:

a. Estimate typical peak hour demand. Determine the general time of day (morning, noon, evening) when the

most hot water is used. Use chart below to determine potential maximum usage.

Estimate of Peak Domestic Hot Water Usage

Average Gallons of

Use Hot Water per Usage

Times Used During

One Hour

Total Peak Hour Demand =

Shower 20

Bath 20

Shaving 2

Hands and Face Washing 4

Hair Shampoo 4

Hand Dish Washing 4

Automatic Dish Washing 14

Food Preparation 5

Wringer Clothes Washer 26

Automatic Clothes Washer 32

x____________________

Times Used During

One Hour

x____________________

b. Estimate unusual peak draw demand. Whirlpool baths, hot tubs, and mutltiple head showers require large

quantities of hot water in a short period of time. Contact fixture manufacturer for quantity of water required.

Generally speaking, these circumstances can only be met with larger storage volumes.

c. Domestic Water Temperature. Most residential usage will be satisfied with 119ºF water, the temperature

setting recommended by the Consumer Product Safety Commission. Some applications such as laundry and

dishwashers may require a higher temperature.

Ratings can be improved by increasing Techtanium thermostat setting and using a mixing valve to temper the

hot water to the proper temperature. When temperatures greater than 119ºF are required, use a mixing valve at

the outlet of the water heater or anti-scald fittings at point of use.

PERFORMANCE RATINGS

CAPACITY (Gallons)

HEAT EXCHANGER SURFACE AREA SQ.FT.

RECOMM. FLOW RATE GPM (Boiler Water)

PRESSURE DROP FT. HD. (Heat Exchanger)

FIRST HR. RATINGS GPH 90 DEGREE RISE

CONTINUOUS FLOW GPH 90 DEGREE RISE

FIRST HR. RATINGS GPH 70 DEGREE RISE

CONTINUOUS FLOW GPH 70 DEGREE RISE

BOILER SIZE BTU'S REQUIRED

TT-40 TT-55 TT-79 TT-119

40 55 79 119

14 14 26 26

10 10 14 14

2.3 2.3 11 11

188 225 295 376

160 187 240 293

233 277 363 460

205 239 308 377

120,000 140,000 180,000 220,000

NOTE: ABOVE RATINGS BASED ON BOILER MAINTAINING TEMPERATURE OF 180 DEGREES FAHRENHEIT.

III TANK SPECIFICATIONS

PHYSICAL SPECIFICATIONS

CONNECTIONS

PHYSICAL SPECIFICATIONS

TT-40

TT-55

TT-79

TT-119

20”

22”

28"

119

449

576

737

1324

124

143

243

355

116

118

232

333

MODEL

DESCRIPTION MODEL

WEIGHT (Lbs.)

NET SHIPPING FILLED

HEIGHT TO CONNECTION (inches)DIAMETER

OF TANK

VOLUME

(Gallons)

COIL SURFACE

(Square Feet)

46.65

59.33

69.88

66.9

n/a

59.76

55.74

n/a

46.33

49.76

34.8

55.38

43.27

19.8

38.7

39.2

11.3

11.5

11.29

11.38

8.58

8.78

8.74

10.2

INDIRECT WATER HEATER

TEMP. & PRESS. RELIEF VALVE

DOMESTIC HOT WATER OUTLET

DOMESTIC COLD WATER INLET

BOILER WATER OUTLET (RETURN)

CONTROL

BOILER WATER INLET (SUPPLY)

RECIRCULATON (TT-79, TT-119)

TT-40 TT-55 TT-79 TT-119

3/4” 3/4” 1” 1”

3/4” 3/4” 1” 1 1/2” mpt

1” 1” 1” 1”

1/2“ 1/2“ 1/2“ 1/2“

1” 1” 1” 1”

– – 3/4” 3/4”

T & P RELIEF

VALVE

D.H.W. OUTLET

BOILER WATER

OUTLET (RETURN)

D.C.W. INLET

BOILER WATER

INLET (FEED)

TT-40, TT-55 TT-79, TT-119

CONTROL

T & P RELIEF

VALVE

D.H.W. OUTLET

BOILER WATER

INLET (FEED)

BOILER WATER

OUTLET (RETURN)

RECIRCULATION

D.C.W. INLET

CONTROL

A-OVERALL TANK HEIGHT

B-DOMESTIC HOT WATER OUTLET

C-RECIRCULATION(TT-79 & TT-119)

D-BOILER WATER INLET(FEED)

KEY TO PHYSICAL SPECIFICATIONS

(see table below).

E-CONTROL

F-DOMESTIC COLD WATER INLET

G-BOILER WATER OUTLET(RETURN)

TANK JACKET

INSULATION

IV INSTALLATION/PIPING

The Location of the Techtanium heater.

Locate the heater so that there is easy access to the

control, piping, valves, drain and heater for future servicing

and maintenance. The heater is to be kept in an area where

it is not exposed to freezing temperatures.

Also, the heater must be located in an area where a leak

(eg. from the piping or fittings, from any temperature and

relief valve discharge, or from the tank itself), will not

cause personal harm or damage the surrounding area. The

tank should be installed in an area with a floor drain or in a

pan suitable for water heaters.

DHT will not be held liable for any damages caused by

water leakage.

The floor or area where the tank is installed must be

capable of supporting the tank when filled with water.

(Refer to Table at right.)

PIPING

1. General

a. All plumbing must be in accordance

with the requirements of the author-

ity having jurisdiction.

b. Use both thread tape and pipe

dope on all mechanical connections.

c. Zone valve (if used) and circulator

must be sized to provide minimum

flow rate specified in the table to the

right, Flow Specifications. Use 1 inch

nominal copper tubing between boiler

and heat exchanger. See the tables

on Friction Loss. Point of emphasis:

using a zone valve without a full bore

may cause high pressure drop which

will adversely affect performance.

Use extreme care when selecting

zone valve.

d. All piping must be adequately

supported.

e. Allow for thermal expansion.

f. Dielectric Unions (recommended) -

used to electrically isolate the

Techtanium tank from the connected

domestic water piping. This helps to

minimize the possiblity of corrosion

damage.

Weight (lbs.) Model

449

576

737

1324

TT-40

TT-55

TT-79

TT-119

TANK WEIGHT WHEN FILLED.

Read the Installation and Operating Instructions manual

thoroughly. Follow recommended piping and wiring diagrams.

Upon completing installation, fill the tank with water. While

filling it leave a hot water faucet open until a steady stream

of water is flowing. Then, shut the faucet and check for any

leaks thoughout the entire system.

FOR YOUR SAFETY: Do not store or use gasoline or other flammable vapors or liquids in the vicinity of this or any other appliance. Controls on

this appliance could ignite vapors causing an explosion.

Flow Specifications

Friction Loss per 100 Feet of Tubing (psi)

Model No.

TT-40

TT-55

TT-79

TT-119

Tubing Type

Type K

Type L

Type M

Flow Rate (gpm)

10 gpm 15 gpm

3.1 psi 6.5 psi

2.7 psi 5.7 psi

2.3 psi 4.7 psi

Recommended

Flow Rate

10 GPM

14 GPM

Heat Exchanger

Pressure Drop

(Ft. Hd.)

2.3

Domestic Water

Connection Sizes

3/4”

1”

1” MPT

Friction Loss Allowance for Copper Fittings (feet of straight tubing)

Fitting

90º Elbow

45º Elbow

Tee, Run

Tee, Branch

90º Bend

180º Bend

Gate Valve

Wrought

1/2

–

Cast

1/2

–

5-(underPIPING,c.,7th line down,delete,below ,forsizing,and place a period afterLoss.)

5-(in chartheaded Flow Specifications,aftercolum n heading,HeatExchangerPressu re Drop,

add,(Ft.Hd.)in parens,and change numbers in thatco lum n to,2.3,2.3,11,11.(no commas)

IV INSTALLATION/PIPING (cont’d)

PIPING

2. Domestic Water

a. Cold Water In. Install brass tee and drain valve (not

provided). Install shutoff valve between water supply

and cold water inlet for ease of service as shown in the

exhibit below.

b. Standard Domestic Hot Water Out. A heat trap will

improve energy efficiency by reducing piping heat loss.

Thermostatic Mixing Valve

At times a thermostatic mixing valve may be recom-

mended or required. The thermostatic mixing valve

blends domestic cold water with hot water exiting from

the heater, to yield a more constant desired tempera-

ture. Risk of scalding is not eliminated with the use of a

thermostatic mixing valve. Refer to literature provided

by valve manufacturers for recommended installation.

Expansion Tank

When a back flow device or no return valve is installed in

the system a Thermal Expansion Tank designed for use

with potable water will be required. Locate the expansion

tank on the domestic cold water line near the heater

between the back flow device or no return valve and the

heater (see piping diagrams). Refer to the Thermal expan-

sion Tank manufacturer literature for sizing.

Vacuum Breaker

DHT recommends that a vacuum breaker be installed on

the domestic piping to the heater. The vacuum breaker

protects the heater in the event that tank pressure falls

below atmospheric pressure.

Temperature & Pressure Relief Valve( T & P)

A T & P is required on all Techtanium heaters. Install a

T & P valve (long element type) into the tapping

designated for the T & P.

Install temperature and pressure protective equipment

required by local codes, but no less than a combination

temperature and pressure relief valve certified as meeting

the requirements for relief Valve and Automatic Shutoff

Devices for Hot Water systems, ANSI Z21.22, by a nation-

ally recognized testing laboratory that maintains periodic

inspection of listed equipment or materials.

The valve must be oriented, provided with tubing or

otherwise installed so that discharge can exit only within

six (6) inches above, or at any distance below, the struc-

tural floor, and cannot contact any electrical part. The

valve must be piped to an area where discharge will not

cause personal injury or damage the surrounding area.

WARNING!

TEMPERATURE & PRESSURE RELIEF VALVE

INSTALL A T & P WITH A RATED CAPACITY THAT IS

EQUAL TO OR GREATER THAN THE OUTPUT OF THE

ENERGY SOURCE.

REMOVAL OF THE T & P, OR FAILURE TO REPLACE

TEMPERATURE- PRESSURE RELIEF VALVE, WILL

RELEASE THE MANUFACTURER FROM ANY CLAIM

WHICH MIGHT RESULT FROM EXCESSIVE

TEMPERATURES AND PRESSURES.

IV INSTALLATION/PIPING (cont’d)

PIPING

2. Domestic Water

a. Cold Water In. Install brass tee and drain valve (not

provided). Install shutoff valve between water supply

and cold water inlet for ease of service as shown in the

exhibit below.

b. Standard Domestic Hot Water Out. A heat trap will

improve energy efficiency by reducing piping heat loss.

Thermostatic Mixing Valve

At times a thermostatic mixing valve may be recom-

mended or required. The thermostatic mixing valve

blends domestic cold water with hot water exiting from

the heater, to yield a more constant desired tempera-

ture. Risk of scalding is not eliminated with the use of a

thermostatic mixing valve. Refer to literature provided

by valve manufacturers for recommended installation.

Expansion Tank

When a back flow device or no return valve is installed in

the system a Thermal Expansion Tank designed for use

with potable water will be required. Locate the expansion

tank on the domestic cold water line near the heater

between the back flow device or no return valve and the

heater (see piping diagrams). Refer to the Thermal expan-

sion Tank manufacturer literature for sizing.

Vacuum Breaker

DHT recommends that a vacuum breaker be installed on

the domestic piping to the heater. The vacuum breaker

protects the heater in the event that tank pressure falls

below atmospheric pressure.

Temperature & Pressure Relief Valve( T & P)

A T & P is required on all Techtanium heaters. Install a

T & P valve (long element type) into the tapping

designated for the T & P.

Install temperature and pressure protective equipment

required by local codes, but no less than a combination

temperature and pressure relief valve certified as meeting

the requirements for relief Valve and Automatic Shutoff

Devices for Hot Water systems, ANSI Z21.22, by a nation-

ally recognized testing laboratory that maintains periodic

inspection of listed equipment or materials.

The valve must be oriented, provided with tubing or

otherwise installed so that discharge can exit only within

six (6) inches above, or at any distance below, the struc-

tural floor, and cannot contact any electrical part. The

valve must be piped to an area where discharge will not

cause personal injury or damage the surrounding area.

WARNING!

TEMPERATURE & PRESSURE RELIEF VALVE

INSTALL A T & P WITH A RATED CAPACITY THAT IS

EQUAL TO OR GREATER THAN THE OUTPUT OF THE

ENERGY SOURCE.

REMOVAL OF THE T & P, OR FAILURE TO REPLACE

TEMPERATURE- PRESSURE RELIEF VALVE, WILL

RELEASE THE MANUFACTURER FROM ANY CLAIM

WHICH MIGHT RESULT FROM EXCESSIVE

TEMPERATURES AND PRESSURES.

IV INSTALLATION/PIPING (cont’d)

PIPING

BO ILER

CO NTRO LS

DOMESTIC HOT OUT

DOMESTIC CO LD IN

* TH ERMAL

EXPANSION

TA NK

BO ILER FEED

BOILER RETURN

RECIRCULATION

M80/M115

MULTIPLE TANK INSTALLATION -

COMMERCIAL APPLICATION (TT-79, TT-119)

TANK INSTALLATION

DOMESTIC HOT

OUT

DOMESTIC CO LD IN

BO ILER FEED

BO ILER RETU RN

BO ILER

CO NTRO LS

* TH ERMAL

EXPANSION

TA NK

TA NKCO NTRO L

TEMP& PRESSU RE RELIEF

VA LV E

BALL VA LV E

CIRCULATOR

ZO NEVA LV E/

CHECK VA LV E

DRAIN VA LV E

TT-79, TT-119

TT-40, TT-55

D.H.W

T & P

V WIRING

All wiring must be done in accordance with

National, State and local codes. Adhere to the

National Electric Code - ANSI/NFPA 70-1990 in

the absence of any other codes.

Power must be shut off before installing or

servicing the heater. A separate shut off switch

should be installed to support future servicing or

an emergency shut down. The entire heating

system should have its own designated electrical

circuit.

The Techtanium heater operates in much the

same way as an additional heating zone, either

utilizing the same circulator as household

heating or its own circulator. The heater

temperature is maintained by the use of an

immersion type aquastat. The aquastat is

installed into the immersion well on the heater

and secured by tightening the set screw or

clamp.

The aquastat operates in much the same way as

a thermostat. When the temperature falls inside

the tank the set of contacts make (close) and

when the temperature rises the contacts break

(open).

The aquastat should be tied into the boiler

system and controls. When the tank calls for heat

the aquastat contacts close and signal the boiler

controls, allowing the boiler to maintain

temperature and proper operation of the tank

circulator.

DHT recommends the use of a priority control to

help the boiler maintain desired temperature and

satisfy the tank's BTU requirements.

The Techtanium heater recovery ratings are

based on the boiler's ability to mainatain 180

degrees Fahrenheit. It is important that the

installer, plumber or heating technician

responsible for installing the heater, make

certain that the boiler capacity (BTU) is adequate

to satisfy the heater's BTU requirements.

V WIRING (cont’d)

Operation: When any thermostat calls for

heat, the boiler is given a signal to start.

The appropriate circulator is energized

only when the boiler temperature is above

the set low limit.

Priority Operation: When zone 6 is

switched to the priority setting and is

actuated, all other zones will stop

operation until zone 6 is satisfied. When

zone 6 is not switched to priority, all zones

will operate independently.

Jumper Placement: REMOVE the jumper

between terminals ZC and ZR. Connect

terminal ZC to ZC terminal on the

aquastat control. Connect terminal ZR to

ZR terminal on the aquastat control.

Confirm polarity is consistent between

boiler aquastat and switching relay.

Power Input: Connect 120 volt as power

input to terminals N and H. Neutral wire to

terminal N. Hot wire to terminal H.

TANKLESS COIL BOILER APPLICATION - PRIORITY FIGURE 3a.

V WIRING (cont’d)

POWER

INPUT

ZONE 1

END SWITCH

ZR 120 VOLT CIRCULATORS

SIX ZONE SWITCHING RELAY

WITH OPTIONAL PRIORITY

THERMOSTAT

ZONE 2ZONE 3ZONE 4 ZONE 5ZONE 6

ZONE 1

POWER

ZONE 2

ZONE 3

ZONE 4

ZONE 5

ZONE 6

JUMPERTO: "TT" ON BOILER

24 VAC

POWER

FUSE 1 AMP

120 V RELAY

ZONE 6

PRIORITY

SR 506

ZONE 2ZONE 3ZONE 4 ZONE 5ZONE 6 ON

OFF

Operation: When any thermostat calls for

heat, the appropriate circulator is

energized and the isolated end switch (X

and X) will start the boiler.

Priority Operation: When zone 6 is

switched to the priority setting and is

actuated, all other zones will stop

operation until zone 6 is satisfied. When

zone 6 is not switched to priority, all zones

will operate independently.

Jumper Placement: The jumper should be

placed between terminals ZC and ZR.

Connect the isolated end switch to the

aquastat control on the boiler.

Power Input: Connect 120 volt as power

input to terminals N and H. Neutral wire

to terminal N. Hot wire to terminal H.

TACO SR504 & SR506

SWITCHING RELAYS

TECHTANIUM

TEMP CONTROL

120 VAC OUTPUT

TECHTANIUM

CIRCULATOR

COLD START BOILER APPLICATION - PRIORITY FIGURE 3b.

V WIRING (cont’d)

ZONING WITH CIRCULATORS USING R8182D AND R845A RELAY

ZONING WITH CIRCULATORS USING L8124 E-F AND R845A RELAY

V WIRING (cont’d)

USING L8148A OR L8152A COLD START BOILER CONTROL WITH CIRCULATORS

USING L8143A OR L8152A COLD START BOILER CONTROL WITH ZONE VALVES

VI MAINTENANCE

To ensure efficient and safe operation, DHT recommends

the servicing of the heater by a competent service techni-

cian.

Lime or Sediment Buildup (Every 6 months)

To reduce the buildup of lime or sediment it is recom-

mended that the tank be flushed every six months.

1. Drain the tank through the drain valve at the bottom of

the tank until the water is clear.

2. Inspect the tank for any deposits of lime or sediment.

3. Remove lime, scale or deposits using care not to

damage the tank lining.

Temperature & Pressure Relief Valve (Every 12 months)

1. Before manually testing theT & P valve, make sure the

valve is piped in a manner that will not cause harm or

damage any surrounding area.

2. Manually open the relief valve and allow it to flush out

any lime or sediment deposits.

3. Allow the relief valve to snap shut, making sure the seal

closes properly.

Magnesium - Anti-Corrosion Anodes (No longer than every

12 months)

The Techtanium Water Heater is provided with two magne-

sium anti-corrosion anodes, an upper and a bottom anode.

Assessment of the condition of the bottom anode can be

made by judging the condition of the upper anode.

Removal of the anodes:

1. Shut off all power to the heater.

2. Close the domestic cold water supply valve.

3. Open the household hot water taps.

4. Attach a hose to the drain valve located at the bottom of

the heater and allow the heater to drain.

5. Unscrew the anodes.

EXAMINE THE ANODES AND REPLACE IF THEY SHOW

SIGNS OF DETERIORATION.

6. Replacement of the Anodes -- The use or P.T.F.E. tape is

recommended to ensure watertight connection of the

anodes.

Failure to inspect the anodes may result in premature

failure of the heater.

OWNER INFORMATION:

MODEL

SERIAL NO.

DATE INSTALLED

INSTALLER NAME

WHOLESALER NAME

ORIGINAL OWNER NAME & ADDRESS

ADDITIONAL INFORMATION

LIMITED WARRANTY FOR DIVERSIFIED HEAT TRANSFER, INC. TECHTANIUM™ INDIRECT-FIRED WATER HEATER

Your Techtanium™ indirect-fired water heater is protected by these warranties.

These warranties are applicable to original residential or commercial purchasers only.

THE FOLLOWING WARRANTIES ARE EXCLUSIVE AND ARE GIVEN AND ACCEPTED IN LIEU OF ANY AND ALL OTHER WARRANTIES, EXPRESS OR IMPLIED,

INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, AND ANY OBLIGATION,

LIABILITY, RIGHT, CLAIM OR REMEDY IN CONTRACT OR TORT, WHETHER OR NOT ARISING FROM DIVERSIFIED HEAT TRANSFER’S NEGLIGENCE, ACTUAL OR

IMPUTED.

THE REMEDIES OF THE ORIGINAL PURCHASER SHALL BE LIMITED TO THOSE PROVIDED HEREIN TO THE EXCLUSION OF ANY OTHER REMEDIES INCLUDING

WITHOUT LIMITATION, SPECIAL, INDIRECT, INCIDENTAL AND/OR CONSEQUENTIAL DAMAGES INCLUDING, BUT NOT LIMITED TO PROPERTY DAMAGE, LOST

PROFIT, OR DAMAGES ALLEGED TO HAVE BEEN CAUSED BY ANY FAILURE OF DIVERSIFIED HEAT TRANSFER TO MEET ANY OBLIGATION UNDER THIS AGREEMENT

INCLUDING THE OBLIGATION TO REPAIR AND REPLACE SET FORTH BELOW.

NO AGREEMENT VARYING OR EXTENDING THE FOREGOING WARRANTIES, REMEDIES, OR THIS LIMITATION WILL BE BINDING UPON DIVERSIFIED HEAT

TRANSFER UNLESS IN WRITING AND SIGNED BY A DULY AUTHORIZED OFFICER OF DIVERSIFIED HEAT TRANSFER. DIVERSIFIED HEAT TRANSFER DOES NOT

ASSUME OR AUTHORIZE ANY OTHER PERSON TO ASSUME FOR IT ANY OTHER LIABILITY IN CONNECITON WITH THE SALE OF ITS PRODUCTS.

THIS WARRANTY EXTENDS ONLY TO THE FIRST (ORIGINAL) RETAIL PURCHASER OF THE TANK AND ONLY WHILE THE TANK IS OWNED BY THAT

PURCHASER AND REMAINS AT ITS ORIGINAL LOCATION. CHANGE IN OWNERSHIP OR RELOCATION OF THE TANK SHALL FOREWITH TERMINATE THIS

WARRANTY WITHOUT FURTHER NOTICE.

WARRANTY COVERAGE FOR RESIDENTIAL USAGE - 7 YEARS

The Warranties listed in this section shall apply to Diversified Heat Transfer Techtanium™ indirect-fired water heaters used in a residential setting by

original purchasers only. A “residential setting” as used herein shall mean usage either (a) in a single family dwelling in which the original consumer

purchaser of the indirect-fired water heater resides on a permanent basis or (b) in a multiple family dwelling provided that such Techtanium indirect-fired

water heater services only one family unit in a multiple family dwelling; provided that the term “residential setting” shall not include any usage of the

Techtanium indirect-fired water heater above 150 degrees Fahrenheit.

During the specified warranty period of the indirect-fired water heater, Diversified Heat Transfer Inc., will repair or replace, at its option, without charge, any

indirect-fired water heater having a defect or malfunction that results in a water leak from the outside jacket, inner tank, or heat exchanger as a result of

normal use and service. It is expressly agreed between Diversified Heat Transfer and the original residential purchaser that repair or replacement is the

exclusive and sole remedy of the original purchaser.

Any claim under this warranty must be verified by an authorized Diversified Heat Transfer (also referred to as DHT) representative: if the claim is found to be

valid, DHT will repair or replace the tank as set forth herein, within a reasonable time after verification. If DHT chooses in its discretion to repair any

indirect-fired water heater for which there is a valid warranty claim, DHT shall provide parts that are compatible with the subject indirect-fired water heater,

which parts need not be identical to the original. If DHT chooses, in its discretion, to replace any indirect-fired water heater for which there is a valid warranty

claim, DHT shall replace the subject indirect-fired water heater with the same model or, if such model is not available, with amodel which is, in DHT’s

reasonable judgment, the nearest compatible model available at the time of replacement. Removal of the Techtanium water heater and replacement with a

different brand will fully invalidate this warranty coverage.

If Diversified Heat Transfer is unable to repair or replace or otherwise comply with its liability under these warranties, after a reasonable number of

attempts, then the original consumer purchaser’s sole and exclusive remedy for such breach shall be either a replacement product or a full refund of the

purchase price (exclusive of freight, labor and installation), as determined by Diversified Heat Transfer.

If the original purchaser cannot provide proof of purchase than DHT may request proof of residency dating back to the date of manufacture of the tank. In

such case the warranty period will begin from the date of manufacture as determined by the tank serial number.

WARRANTY COVERAGE FOR COMMERCIAL USAGE - (THREE YEARS)

The warranties listed in this section shall apply to Diversified Heat Transfer Techtanium™ indirect-fired water heaters used in a commercial setting by original

consumer purchasers only. A “commercial setting” as used herein shall mean any usage not falling within the above definition of a “residential setting”. A Techtanium

indirect-fired water heater shall be deemed to be used in a“commercial setting” if at any time it is operated at a temperature above 150 degrees Fahrenheit.

If at the time of a request for service the original business purchaser cannot provide a copy of the original sales receipt,installation bill, or equivalent

document, then the warranty period for the indirect-fired water heater shall be three (3) years from the date of manufacture of the indirect-fired water

heater as determined by the tank serial number.

INDIRECT WATER HEATERS

REPLACEMENT TANK - WARRANTY RESIDENTIAL OR COMMERCIAL APPLICATION

For either a residential or commercial application, the following applies to both when a replacement tank is provided for a tank found to be under warranty.

The replacement tank warranty assumes the remaining warranty period left from the original tank purchased.

WHAT IS NOT COVERED BY EITHER OF THESE WARRANTIES

These warranties are void and shall not apply under the following circumstances:

1. The Techtanium™ water heater was not installed or repaired by a heating contractor whose principal occupation is the sale, installation and repair of

plumbing, heating and/or air conditioning equipment.

2. These warranties cannot be considered as a guarantee of workmanship of an installer connected with the installation of the Techtanium water heater, or

as imposing on Diversified Heat Transfer liability of any nature for unsatisfactory performance as result of faulty workmanship in the installation or repair

which liability is expressly disclaimed.

3. The failure or malfunction results from improper or negligent operation, abuse, misuse or maintenance or unauthorized alteration.

4. Malfunctions resulting from, or repairs necessitated by, uses of the indirect-fired water heater for purposes other than that for which it was designed, or

resulting from flood, fire, wind, lightning, freezing or any other natural disaster or act of God, an act of destruction, theftor accident.

5. The original serial number on the indirect-fired water heater or component thereof cannot be readily determined.

6. Any indirect-fired water heater is installed in a setting containing any type of water softener system that is not installed and maintained in accordance

with the manufacturer’s specifications.

7. The Techtanium indirect-fired water heater is used for non-potable applications such as pool or process heating.

8. The failure or malfunction results from failure to keep the tank full of potable water, free to circulate at all times and with the tank free of damaging water

sediment or scale deposits.

9. Components of an indirect-fired water heater which are not defective, but must be replaced during the warranty period as a result of reasonable wear

and tear.

10. Techtanium indirect-fired water heaters which are repaired or altered without prior written approval of Diversified Heat Transfer so as to affect adversely

their reliability.

11. Diversified Heat Transfer Techtanium™ indirect-fired water heaters installed outside of the United States and Canada.

12. Service calls not involving any malfunction or defects and maintenance in the ordinary course.

13. Components of an indirect-fired water heater which are not manufactured expressly for Diversified Heat Transfer; such components are subject only to

those warranties, if any, given by their manufacturers. Diversified Heat Transfer does not adopt and has no responsibility forthose warranties.

14. Any Techtanium tank that does not have installed a new temperature and pressure relief valve bearing the American Society of Mechanical Engineers

(A.S.M.E.) listing at the time of installation.

FURTHER LIMITATIONS OF WARRANTIES AND REMEDIES

These warranties give you specific legal rights, and you may also have other rights which vary from state to state. Some statesdo not allow the exclusion or

limitation of incidental or consequential damages, so this limitation or exclusion may not apply to you.

These are the only written warranties applicable to Diversified Heat Transfer Techtanium™ indirect-fired water heaters manufactured for and sold by

Diversified Heat Transfer. Diversified Heat Transfer neither assumes nor authorizes anyone to assume for it any other obligation or liability in connection with

said Techtanium indirect-fired water heaters.

This warranty does not cover expenses or labor for disassembly, removal, shipment reassembly or reinstallation; the original purchaser will be

responsible for such costs.

Diversified Heat Transfer’s performance under these warranties may be contingent on shipment of components or equipment from suppliers. Diversified

Heat Transfer shall not be liable for any failure or delay in delivery due to any cause beyond its control including without limitation, strike, labor stoppage, a

natural disaster (such as earthquake, flood, fire or storm), political insurrection or the unavailability of components, equipment or supplies.

MAKING A WARRANTY CLAIM

TO FILE A CLAIM UNDER THESE WARRANTIES CONTACT DIVERSIFIED HEAT TRANSFER INC. AT THIS ADDRESS:

439 MAIN ROAD, TOWACO, NEW JERSEY 07082 OR CALL DIVERSIFIED HEAT TRANSFER AT (800) 221-1522 AND ASK FOR CUSTOMER SERVICE.

At the time a claim is filed, the original purchaser must present a copy of the original sales receipt, installation bill, proof of delivery or equivalent

documents evidencing both ownership of the Techtanium™ indirect-fired water heater and installation in the dwelling or commercial property owned by the

original purchaser

This warranty is to be governed by and construed in accordance with the laws of the State of NewYork without regard to the principles of conflict of laws.