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Before installing, ensure that the following tools are available:

User Manual

Water Heater

HSE-SHS 15 and 25 Litres

Safety Precautions

Installation

Adjustable wrench 

Teflon Tape 

Impact Drill Tool

Hammer 

Bubble Level Indicator 

Measuring Tape

Mounting the Water Heater

•  It is recommended as per IS 302-1 

to have 6 inches clearance from 

the wall.

•  Select a place to mount Water 

Heater vertically with water 

connection at the bottom.

•  Water Heater must be located 

within 3 ft. (approx.) from a 230 V 

electrical outlet with proper 

grounding.

•  Make sure that the wall can 

withstand at least twice the 

weight of the Water Heater when 

completely filled with water.

Do not install the Water Heater where 

water splashes on the Water Heater.

Figure 3

Figure 4

Figure 5

CAUTION

CAUTION

3 ft.

W

ater Heater

6 inch

6 inch

Ceiling

W

all

During Installation

Do not install the Water Heater where 

there is direct sunlight or rain. It has 

to be installed indoor only.

Solid

Concrete

Wall

Solid

Concrete

Wall

False

Wall

False

Wall

5

6

E X P E R T   S E R V I C E

Monday to Friday: 9 a.m. to 8 p.m.
Saturday & Sunday: 9 a.m. to 6 p.m.

# For calls registered at A. O. Smith Call Centre before 4 p.m. only. 

Available only in selected cities. For more details, please call our 

1800-103-2468/1860-500-2468

 or log on to www.aosmithindia.com

       

1800-103-2468

/

1860-500-2468

       

+91 99410 32468

 (Send SMS) 

or 

       

[email protected]

Manufactured by 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.

Customer Care No. 1800-103-2468/1860-500-2468 • Website: www.aosmithindia.com

CIN: U31909KA2006PTC040282

OVER A CENTURY OF INNOVATION

A. O. Smith enjoys a rich history of achievements. A glimpse at our 143-years history 

reveals numerous engineering and technical achievements.

Actual product may differ from the image shown.

Part No.335271-009_R0  Date: 04-09-2017

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.

Blue Diamond® Glass Lining

Blue Diamond® technology increases the life of the inner tank. 

The lining is stronger and twice corrosion resistant than any other 

in the industry.

Long Lasting 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.

Hi-Tech Thermostat & Cut-out

This Water Heater comes with factory pre-set temperature. It has a 

superior Thermostat. In case a fault occurs and the water 

temperature exceeds the preset level, the thermal cut-out cuts off 

the power supply to assure safety.

Multi-function Safety Valve

The Multi-function Safety Valve is designed to automatically 

relieve pressure and discharge water in case the pressure 

overshoots the preset limits.

Long-lasting Anode Rod 

A customised alloy that works in different Water Conditions, 

protects the tank and heating element from corrosion, has twice 

the lifespan compared to a regular magnesium anode.

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 user manual

This user manual is a guide to good practice for operating and periodic 

maintenance of the A. O. Smith HSE-SHS Water Heater.
Do not operate the Water Heater before reading the user manual.

Please follow the 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.

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 the 

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

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-SHS Water Heater. These messages point out the 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.

Read Before Operation 

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 the Water Heater must be installed by an Authorised 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 Centre.

  2.  Verify that the voltage being supplied corresponds to that which is 

marked on the Water Heater manual.

Important

Specifications

*The maximum set point temperature may vary ± 5 °C.

Figure 1

Dimensions

Do not tamper or detach the Multi-function 

Safety Valve from the Water Heater.

WARNING

DO NOT use this Water Heater if any part has been under water. Immediately 

contact A. O. Smith Service personnel to inspect the Water Heater and 

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.

WARNING

Model 

 

HSE-SHS-015  HSE-SHS-025

Volume [L] 

 

15 

 

25

Power [W] 

 

 

2000

Voltage/Frequency [V/Hz] 

 

230~/50

Actual Stdg. Loss [kWh/24h/45°C diff.] 

0.410 

 

0.505

Reheating Time for 35°C rise [in min.] 

14  25

Maximum Set Point Temperature [°C] 

 

75*

Rated water pressure

  N/cm

2

  

 

80

 

Water head (metres)

   

80

Inlet/Outlet connections [inch] 

 

½ BSP

Net Weight (kgs) 

 

10

  

13

A

C

B

E

D

FF

*Multi-function Safety Valve has been factory fit with the Water Heater and 

set at 0.8 MPa (8 Bar) rated pressure.

CAUTION

 Part  Description

 Part  Description

  1 

Cold water inlet pipe with diffuser

  2 

Hot water outlet pipe

  3 

Multi-function Safety Valve*

  4 

Service Cover

  5 

Blue Cap

  6 

Red Cap

  7 

Heating Element and Anode

  8 

Thermal Cut-out

  9 

Thermostat

  10  Wall Mount Slot

Figure 2

  Model 

15 Ltrs.  25 Ltrs.

  A (mm) 

376 

442

  B (mm) 

383 

446

  C (mm) 

100 

100

  D (mm) 

112 

140

  E (mm) 

112 

120

  F (mm) 

349 

391

9

8

Without Service Cover

7

5

6

2

With Service Cover

4

1

3

10

1

2

3

4

Energy-efficient PUF Injection Technology 

The advanced PUF process ensures uniform foam distribution. 

Zero gaps between tanks and outer cover to avoid heat loss. 

Thereby hot water is available for longer duration.

EXPANDING THE WATER FOOTPRINT

In 2015, the company made its foray into the water purification industry with premium 

residential water purification products. 
In just over a year, A. O. Smith water purifiers have been successfully launched in 

numerous cities all across India. Now adding to the range is the 

A. O. Smith Green Series

 

with “

Highest Recovery 100% RO Water Purifier in India

*”

*Under standard test condition. For details visit www.aosmithindia.com

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