A.O. Smith HSE User manual

EXPERT COMPANY SERVICE
www.aosmithindia.com
Toll Free No.: 1800-103-2468 or
SMS us: [phone] or
E-mail us: [email protected]
Monday to Friday: 9 am to 8 pm.
Saturday & Sunday: 9 am to 6 pm.
# For calls registered at A. O. Smith call centre before 4 pm only. Not available on public
holidays and under unavoidable circumstances. Available in select cities only.
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TIME FIX
HOUR RESPONSE
#
DAY RESOLUTION
TIME FIX
Water Heater
HSE-HAS 15 and 25 Litres
Superior quality.
Longer warranties.
User Guide

Congratulations!
And welcome to the A. O. Smith family.
We would like to thank you for the trust you have shown in choosing an A. O. Smith water
heater. You can be sure it will live up to your expectations. Thousands of delighted users all
over the world trust A. O. Smith water heaters for their families. This user guide will introduce
you to your water heater. Follow the instructions carefully and look forward to enjoying long
years of trouble-free service.
A. O. Smith is a company known for its innovative technologies and energy-efficient solutions.
Ours are the only water heaters with the Blue Diamond®Glass Lining for the inner tank. This
cutting edge technology prevents sediment and scaling, fights corrosion and extends the life
of your water heater.
Our customer-centric approach manifests itself in many other ways too. If you need any
information or assistance with your water heater, just call us from any phone, anywhere in the
country to our Toll Free Customer Care No. 1800-103-2468.
Or
Factory Address:
A. O. Smith India Water Products Private Limited
(formerly known as A. O. Smith India Water Heating Private Limited)
Plot 300, Phase - II, KIADB Industrial Area, Harohalli, Kanakapura Taluk,
Ramanagara District, Karnataka – 562 112, India.
CIN: U31909KA2006PTC040282
A. O. Smith India Water Products Private Limited was established in 2006. Since then, the
A. O. Smith team has conducted numerous focus group studies and spent endless research
hours determining what India wanted in a water heater. Backed by 75 years of proven
technological advances, A. O. Smith India has created a stylish design with features demanded
by the Indian consumer.
The A. O. Smith plant with manufacturing facilities spread over 76,000 sq. ft. is located on
20 acres, just outside Bengaluru, in the KIADB Industrial Area, Harohalli. The India operations
is the 16th A. O. Smith manufacturing facility worldwide. In 2013, additional 150,000 sq. ft.
was added in Bengaluru factory. A. O. Smith's India plant has extensive engineering and
technical resources and has the latest technologies incorporated. A. O. Smith is the first
manufacturer to invest in and produce glass lined water heaters in India.
Today, A. O. Smith Corporation is one of the largest water heater manufacturers in the world
and is a global leader in innovative technology and energy efficient solutions.
About A. O. Smith

Read Before Operation.......................................................... 1
General.................................................................................. 2
Specifications........................................................................ 3
Key Features .......................................................................... 5
Safety Precautions................................................................. 6
Installation ........................................................................... 6
Connecting Multi-function Safety Valve............................... 8
Connecting to Water Supply................................................. 10
Operation .............................................................................. 11
Troubleshooting .................................................................... 14
Circuit Diagram .................................................................... 15
Warranty................................................................................ 16
Jurisdiction............................................................................ 17
Expert Company Service ....................................................... 17
Service and Maintenance ..................................................... 19
Contents
Discharge Tube
Wall Mounting
Accessories
User Guide
What's in the box?
Electric
Water Heater
Multi-function
Safety Valve

1
Read Before Operation
On Receipt
It is our policy to promote safe delivery of all orders. This product shipment has been
thoroughly checked, packed and quality certified before leaving our factory.
Visible Loss or Damage
If any of the goods called for on the bill of lading or express receipt are damaged or the
quantity is short, do not accept them until the freight or express delivery agent makes an
appropriate notation on your freight bill or receipt.
Concealed Loss or Damage
When a shipment has been delivered to you in apparent good condition, but upon opening
the packaging if any loss or damage has taken place while in transit, inform the carrier’s
agent / A. O. Smith representative immediately.
About this manual
This manual is a guide to good practice for operating and periodic maintenance of the
A. O. Smith HSE-HAS water heater.
Do not operate the water heater before reading the user manual.
Please follow instructions in this manual to ensure personal safety and proper operation of
this product. Always install, operate, inspect and maintain this product in accordance with
all applicable standards. Please store this user manual carefully for any future reference.

2
General
Indicates an imminently hazardous situation which, if not avoided,
will result in death or serious injury.
Indicates a potentially hazardous situation, which if not avoided,
could result in death or serious injury.
Indicates a potentially hazardous situation which, if not avoided, may
result in minor or moderate injury or property damage.
This is the safety alert symbol. This symbol alerts you to potential hazards
that can hurt you and others. All safety messages will follow the safety
alert symbol and either the word “DANGER” or “WARNING”.
DANGER
WARNING
CAUTION
Important
These instructions have been written as a guide for the proper installation and operation of
your water heater. A. O. Smith will not accept any liability where these instructions have
not been followed. However, for your safety and to avoid damage caused by improper
installation, it is recommended that water heater must be installed by a Qualified Service
Technician.
Before proceeding with the installation instructions:
1. Inspect the water heater and its component parts for possible damage. Do Not
install or attempt to repair any damaged component parts. If you detect any
damage in the water heater, please contact the dealer where the water heater
was purchased or call A. O. Smith Customer care.
2. Verify that the voltage being supplied corresponds to that which is marked on the
water heater manual.
WARNING
DO NOT use this water heater if any part has been under water. Immediately contact a
Qualified Service Technician to inspect the water heater and contact A. O. Smith Service
personnel to replace any part of the control system which has been under water. Failure to
follow this instruction can result in property damage, serious injury or death.
Safety
Your safety and the safety of your loved ones is paramount. There are several safety related
messages in this manual, which have been provided during various steps such as the
installation, operation and maintenance of your HSE-HAS water heater. These messages
point out potential hazards and also educate on how to reduce any potential risks. Please
always read and follow all safety messages as provided in this user manual.

3
Specifications
Right Hand Side Inlet Outlet Models Left Hand Side Inlet Outlet Models
Model HSE-HAS 15 HSE-HAS 25 HSE-HAS 15 - LHS HSE-HAS 25 - LHS
A [mm] 320 320 320 320
B [mm] 604 804 604 804
C [mm] 100 100 100 100
D [mm] 126 126 126 126
E [mm] 180 380 180 380
F (mm) 334 334 334 334
Dimensions
Note: Image may vary from the actual product.
Figure 1
Model HSE-HAS 15 HSE-HAS 25
HSE-HAS 15 - LHS HSE-HAS 25 - LHS
Volume [L] 15 25
Power [W] 2000
Voltage/Frequency [V/Hz] 230~/50
Actual Stdg. Loss [kWh/24h/45ºC diff.] 0.507 0.618
Reheating Time for 35ºC rise [in min.] 20 30
Temperature range [ºC] 25-75 ±5
Rated water pressure N/cm280
Water head (metres) 80
Inlet/Outlet connections [inch] ½ BSP
Net Weight (kgs) 12 18
C
DE
F
ØA
B
Front view
Rear view
Right view
C
DE
F
ØA
B
Front view
Rear view
Left view
Right Hand Side Inlet Outlet Models Left Hand Side Inlet Outlet Models

4
Figure 2
Note: The above image shown is Left Hand Side model.
Item Description
1 Cold water inlet pipe with diffuser
2 Hot water outlet pipe
3 Multi-function Safety valve (Insulated)
4 Temperature Control Knob
5 Thermostat
6 Blue sticker
7 Red sticker
8 Anode
9 Heating element
10 Thermal Cut-out
11 Installation Bracket
8
Without Service CoverWith Service Cover
10
9
7
6
2
5
4
3
1
11

5
Key Features
Note: A. O. Smith reserves the right to amend or modify the specifications and features at any
time, as and when required without any prior notification.
Thermal Cutout
If the water temperature exceeds the highest preset level, the thermal cut-out
cuts off the power supply to assure safety.
Temperature Control Knob
The temperature control knob allows you to set the temperature anywhere
between 25ºC to 75ºC.
Blue Diamond®Glass Lining
Blue Diamond®technology increases the life of the inner tank. The lining is
stronger and more corrosion resistant than any other in the industry.
Multi-function Safety Valve
The Multi-function safety valve is designed to automatically relieve and
discharge water, in case the pressure overshoots the preset limits.
Glass Coated Heating Element
Scale and sediment build-up on the surface of the element can lead to
premature failure. A. O. Smith Glass Coating helps to prevent scale formation
and extends the life of the heating element.
Anode Rod
The tank has an anode rod which has stainless steel core that is designed to
protect the tank from corrosive elements. The anode rod uses a special cathodic
action to fight these elements and thus prolong the life of the water heater.

Do not install the water heater where there is
direct sunlight or rain. It is has to be installed
indoor only.
During Installation
6
Figure 3
Do not install the water heater where water
splashes on the water heater.
Figure 4
Safety Precautions
Installation
Before installing, ensure that the following tools are available:
Figure 5
Tools Required
CAUTION
Bubble Level Indicator Measuring Tape
Adjustable Wrench
Impact
Drill Tool
HammerTeflon Tape Ruler
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
CM
0 1 2 3 4 5 6 7 8 9 10 11 12
INCH
CAUTION

7
Figure 6
Mounting the Water Heater
 It is recommended as per IS302-1 to have
6 inches clearance from wall.
 Select a place to mount water heater
horizontally with water connection at the
bottom.
 :DWHUKHDWHUPXVWEHORFDWHGZLWKLQ
3-1/2ft. (approx.) from a 230V electrical
outlet with proper grounding.
 0DNHVXUHWKDWWKHZDOOFDQZLWKVWDQG
at least twice the weight of the water
heater when completely filled with
water.
Figure 7
Figure 8
 8VHDGULOOELWZLWKGLDPHWHURIPPWR
drill 2 holes at least 90mm deep in the
wall (Step 3). The two holes should be
aligned horizontally. The distance (D)
between 2 holes is given in the below
table (Step 2).
 ,QVHUWWKH([SDQVLRQDQFKRULQWRWKH
hole (Step 1).
 3ODFHWKH+DQJLQJVFUHZRYHUWKH
Expansion anchor and tighten the
Hanging screw by rotating it till it gets
fixed steadily (Step 2).
Figure 9
Ceiling
Water
heater
Wall
3-1/2 ft.
Solid
Concrete
Wall
False
Wall
D
1
2
3
Hole
Concrete
Wall
90 mm
D
Drilling
Tool Models D (mm)
HSE-HAS 15
HSE-HAS 15-LHS 180
HSE-HAS 25
HSE-HAS 25-LHS 380
Expansion
anchor
Hole
Concrete
Wall
Concrete
Wall
1
2Hanging
Screw

8
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wards on the water heater to ensure that the water heater is fixed steadily.
Figure 10
Connecting Multi-function Safety Valve
Figure 11
Wrap the threaded of the cold water inlet
pipe with Teflon tape in clockwise
direction.
Figure 12
Connect the Multi-function Safety valve to
cold water inlet pipe and rotate it in
clockwise direction till it gets fixed.
DANGER
Hot Water is dangerous, especially for the young children, the aged or the
disabled. The water heater allows you to control the temperature of your hot
water. Water temperatures over 52°C can cause severe burns instantly or death
from scalds. Do not leave a child or an infirm person in the bath unsupervised.
HOT
Scalding
Water
Heater
Wall
2
Installation
Bracket Hanging
Screw
Water
Heater
Wall
3
Concrete
Wall
Water
Heater
1
T
e
f
l
o
n

9
Figure 13
Connect one end of the discharge tube to the Multi-function Safety valve and connect the
other end to the drain.
Note: The Multi-function Safety valve may drip during the usage of the heater. As the water
is heated, it expands and tries to flowback through the inlet pipe but is prevented by the
presence of the non-return valve . Hence water may drip from the Multi-function Safety
valve. Therefore a Discharge tube is given from the valve tip to a nearby drain. To avoid
dripping, it is recommended to install non-return valve at a distance of atleast 40 feet away
from the inlet of the water heater.
 7KH0XOWLIXQFWLRQ6DIHW\YDOYHVKRXOGQHYHUEHUHPRYHGRUEORFNHGE\DQ\PHDQVWR
prevent it from dripping or releasing the excess pressure inside the heater. Failure to do
so may result in damage to the water heater and injuries to the user. This will also
make the warranty null and void.
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Ensure that the free end of the Discharge tube is placed over a suitable drain and away
from the users.
 'LVFKDUJHWXEHLVSURYLGHGWRUHOHDVHWKHGLVFKDUJHIURPWKHZDWHUKHDWHUWKURXJKWKH
Multi-function Safety valve) in case excessive pressure is developed. The contents of the
discharge from the Multi-function Safety valve may be hot and may cause burns to the
users and damage nearby objects if not properly routed to a drain.
 ,WLVUHFRPPHQGHGWRRSHUDWHWKH'LVFKDUJHOHYHULQWKH0XOWLIXQFWLRQ6DIHW\YDOYHRQ
a regular basis to ensure that there are no blockages and also to remove any lime
deposits that would have been formed inside the water heater.
 (QVXUHWKDWWKHZDWHUKHDWHULVLQSRZHU2))FRQGLWLRQZKHQWKH'LVFKDUJH/HYHULV
being operated. Ensure that the water is filled completely in the water heater before
switching it ON.
CAUTION
Multi-function
Safety Valve
To Drain
Discharge
tube

10
*Flexible Hoses to be procured by the customer, not part of standard product.
Figure 14 Installation Diagram
Right Hand Side Inlet Outlet Models (Refer page 3 )
Left Hand Side Inlet Outlet Models (Refer page 3 )
 0DNHQHFHVVDU\SOXPELQJZLWKUHIHUHQFHWRWKH,QVWDOODWLRQ'LDJUDP)LJ
 $26PLWKUHFRPPHQGV6WDLQOHVV6WHHO66EUDLGHGKRVHV)OH[LEOH+RVHVKDYLQJDPLQLPXP
pressure rating of 8 Bar and hoses should be compatible for hot water applications.
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 &RQQHFWWKHKRWZDWHUSLSHWRWKHRXWOHW>5HG6WLFNHU@
 $WWDFKWKH'LVFKDUJHWXEHWR0XOWLIXQFWLRQ6DIHW\YDOYHDVVKRZQLQ,QVWDOODWLRQ'LDJUDP
(Fig. 14).
Connecting to Water Supply
CAUTION
 Make sure a suitable Teflon tape is used for all plumbing connections to prevent leakage.
 Use only Nylon/ Stainless Steel (SS) braided hoses (Flexible Hoses) having a minimum
pressure rating of 8 Bar and hoses should be compatible for hot water applications.
 Failure to follow this instruction can result in property damage.
Discharge Lever
Multi-function
Safety Valve
To Drain
Hot Water Tap
Cold Water Tap
Discharge Tube
*Flexible Hose
Discharge
Lever
Multi-function
Safety Valve
To Drain
Cold Water Tap
Hot Water Tap
Discharge Tube
*Flexible Hose

11
Connecting to Electrical Supply
Figure 16
The power cord and plug are connected
with this water heater. Find a separate
socket for power plug and make sure the
socket is in firm contact with the plug.
Ensure that reliable earthing has been
done.
CAUTION
 Connect the water heater using independent sockets, do not use any adapters. Use
multimeter to check whether the live line and neutral line are not reverse, to ensure
complete safety.
 Before installing the water heater, confirm that the power of water heater matches electric
meter capacity and supply wire.
 The water heater should be earthed reliably. It is prohibited to connect the earth wire to
neutral wire or faucet water pipe.
Filling the Water Heater Tank
Operation
1. Open a nearby hot water faucet to permit
air to escape.
2. Open the cold water inlet valve fully,
filling the water heater and the piping.
3. Close hot water faucet when water flows.
4. Check all the connections to see if there is
any leakage. In case of a leakage, drain
the water completely, repair the leaking
joint and then refill the water heater.
CAUTION
 This water heater should not be operated with insufficient amount of water. Failure to
do so may result in damage to the water heater and injuries to the user. This will also
make the warranty null and void.
 Once the Mounting, Multi-function Safety valve, Plumbing and Water filling is
completed, then only the power supply should be switched ON.
Figure 15

12
Figure 17 Figure 18
Switch on the water heater’s power supply. The Power indicator lamp glows.
Temperaute Conrol Knob
Right Hand Side Inlet Outlet Models
(For HSE-HAS 15 and HSE-HAS 25 models) Left Hand Side Inlet Outlet Models (For HSE-HAS 15-LHS and HSE-HAS 25-LHS models)
RHS LHS
When the temperature of the water drops by 5°C from the set temperature due to usage of
water, the water heater again enters into the Heating mode.
Temperature setting
Turn the Temperature control knob clockwise for the device to commence heating and change
the set temperature. The Heating indicator lamp will glow. [The set temperature increases if
the Temperature control knob is turned clockwise]. Temperature can be adjusted from 25°C to
maximum 75°C. Recommended to keep Temperature control knob notch position always in
medium or above level.
Modes
There are two types of modes depending on the actual water temperature inside the inner
tank of the water heater:
Figure 19
Heating mode Standby mode
When the actual temperature of the water
is less than the set temperature, it enters
into Heating mode. The Heating indicator
lamp glows as shown in (Fig. 19)
After the water heater reaches set temperature,
it will enter into the Standby mode due to the
thermostat cut-off and the Power indicator lamp
glows and Heating indicator lamp switch off as
shown in (Fig. 20)
Figure 20
RHS LHS
Heating
indicator
lamp
Power
indicator
lamp
RHS LHS
Heating
indicator
lamp
Power
indicator
lamp

13
Draining the Water Heater Tank
Figure 21
Whenever the water heater is not used for an
extended period, unplug the unit and drain. If
it is below freezing temperature, you will
need to unplug the unit and drain it.
1. SwitchOFFtheelectricsupplytothewater
heater.
2. Openthehotwaterfaucetuntilthewater
runscool.
3. Closecoldwatersupply.
4. DrainthewaterbyliftingtheDischarge
LeveroftheMulti-functionSafetyvalve
upwards. (Fig.21)
Please turn off the power supply to the water heater prior to draining the water heater.
CAUTION
Discharge
Lever Discharge Lever
RHS LHS
Multi-function
Safety valve port
Discharge Tube

14
The water heater may not operate as desired if used incorrectly or there is a minor cause,
even though the product has no fault. In these cases, check the following issues to solve
simple problems without the help from the Customer care centre. If the problem does not
solve after checking the following issues, call Customer care centre.
Troubleshooting
Note: Call Customer care centre on 1800-103-2468
Problems Possible Cause(s) Solution
Power indicator lamp and No power supply to the water Turn ON electrical switch.
Heating indicator lamp heater.
does not glow.
Thermostat does not shut OFF. Thermostat is not functioning. Call Customer care centre.
Improper thermostat calibration. Call Customer care centre.
No hot water. Thermal cut-out switch open. Call Customer care centre.
No power supply to the Check the power socket.
water heater.
Control circuit or internal Call Customer care centre.
wiring error.
Water temperature is too high. Improper thermostat calibration. Call Customer care centre.
Thermal Cut-out trips. Call Customer care centre.
Water heats slowly. Heating element is not Call Customer care centre.
functioning.
Piping connection leaks. Connection not sealed. Re-connect piping, using
Teflon tape.
Water leakage from product. Leakage in tank or other parts. Switch off power immediately
and Call Customer care centre.
Water dripping from Non-return valve is installed Install Non-return valve at a
Multi-function Safety close to the inlet of the water distance of atleast 40 feet from
valve during heating. heater. the inlet of the water heater or
connect a Discharge tube from
Multi-function Safety valve to
nearby drain. (Refer “Fig 13”)

15
Circuit Diagram
Figure 22
Element
Red
L
PE
N
Red Brown
Green
Black
Thermostat
Green/Yellow
Black
Tank+Body
Thermal Cutout
Green light Red light

Your A. O. Smith water heater is warranted against defects
arising from faulty design, workmanship and materials for a
period of 24 months from the date of the invoice, subject to the
following conditions:
1. The customer will notify the Company promptly about
defects noticed and give the Company or its Authorised
service provider adequate opportunity to inspect, test and
remedy them, for which the customer will deposit the
goods, if necessary, with the Company's Office / Authorised
service provider along with the original invoice.
2. Special warranty from the date of purchase is only
applicable for the below mentioned components:
  7DQN    <HDUV
  *ODVV&Rated Heating Element - 2 + 2 Years*
  5HVWRIthe parts - 2 Years
3. Inspection and Test Report of the Company's Office /
Authorised service provider will be treated as final and
binding under the warranty for determining the defects,
repairs / alterations required or carried out, or certifying
working of the goods thereafter.
4. The Company or its Authorised service provider will be entitled to retain any defective
part replaced under the warranty.
5. The Company's liability under the warranty will be limited only to defects which occur
under conditions of proper installation, normal operation and under proper use. It
excludes defects occurring because of abuse, faulty care or maintenance and repairs /
alterations to product or the parts by unauthorised person.
6. The water heater should not be operated without water inside the tank. This will make
the warranty null and void.
7. In case of dry heating (water heater operated without water inside the tank), if the
water heater or any component of the water heater is damaged, then it will be repaired /
changed on a chargeable basis. After any repair or part replacement in the water heater,
the basic warranty continues as per the actual date of purchase.
8. Components subject to wear, such as Anode, are not covered under this warranty.
9. The customer will have no claim under this warranty in respect of any personal injury,
damage or property or consequential damages, or for utilisation of the goods not in
accordance with the user guide.
10. The inner tank and Heating element need to be cleaned for any deposits / scales
periodically from a Qualified service technician. This will ensure your water heater works
efficiently for longer time.
11. The service life of the Anode is determined by the quality and quantity of the water
flowing through. Therefore it is recommended to have the anode inspected periodically.
Warranty
on tank
7
Extended
Warranty*
4
16
Product Warranty
Warranty
* Register your product with
the A. O. Smith Customer
Care Centre [1800-103-2468]
within 60 days of purchase
and you will get an extended
warranty on the element
[from 2 years to 4 years].

General Terms of Warranty
1. The “goods” shall mean the goods described in the purchase agreement.
2. “The customer” shall mean the original purchaser under the purchase agreement.
3. “The Company” shall mean A. O. Smith India Water Products Private Limited.
4. The “Purchase Agreement” shall mean the General Terms and Conditions of Sale agreed
upon by the customer and the Company as printed on the Invoice.
5. “Invoice” shall mean the Invoice issued for the Unit by the Company or Authorised
Dealer to the customer describing the goods and indicating, inter alia, the total
purchase price thereof, the name of the customer and the place where the goods are to
be installed.
6. “User Guide” shall mean the instructions for installation leaflet published by the
Company and delivered to the customer.
Note: Follow any one for registration of the Extended Warranty
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  7RUHJLVWHUIRUWKHZDUUDQW\GHWDLOVRI\RXUZDWHUKHDWHU
visit www.aosmithindia.com.
17
Post Warranty
1. The customer may be offered a yearly Service Contract at the prevailing Company rates
and terms.
2. In case the customer does not wish to enter the Service Contract, he has an option to
call our Customer Care Centre and get A. O. Smith water heater unit serviced on actual
basis i.e. by paying the Labour Cost and Spares needed to attend to that Service or
Complaint Call at the prevailing Company rates. Such service will be rendered by the
Company in towns or places where the Company has its Authorised service providers.
3. In case of product repair after warranty by Authorised service provider, all expenses of
transporting the goods to and from the Authorised service provider shall be borne by the
customer directly.
4. If, during such service, it is necessary for the Company or Authorised service provider to
replace or repair defective components or parts, the customer shall be required to pay
for the same as per the Company's prevailing price list.
1. Different models has different service delivery levels.
2. Service level mentioned for particular models are applicable for Metros and A Class Cities
e.g. Delhi and NCR, Bengaluru, Hyderabad, Kolkata, Pune, Goa, Cochin, Chennai,
Chandigarh and Ahmedabad.
3. Service level deliverables are valid up to city municipal limit only.
4. Service level may differ in case of public holidays and unavoidable conditions due to
natural climate, any political and regional regulations.
5. Power of 1 valid service is applicable for calls registered at A. O. Smith call centre before
4 p.m. only.
The courts of competent jurisdiction at Bengaluru, Karnataka shall have exclusive jurisdiction
over all matters arising out of any disputes in relation to the product.
Jurisdiction
Expert Company Service - Power of 1