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Front Side

 Size: 420 mm (W) x 297 mm (H)

Red Line 

Mark are for Folding.

 Not to be Printed

Pre-instruction Literature

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-VAS-X / HSE-VBS-X 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.

Disposal of this Product 

(Waste Electrical and Electronic Equipment) 

This marking on the product, accessories or User Manual indicates that the product 
and its electronic accessories (e.g. Remote, batteries and other replaceable electronic 
accessories) should not be disposed of with other household waste at the end of their 
working life. To prevent possible harm to the environment or human health from 
uncontrolled waste disposal, please separate these items from other types of waste 
and recycle them responsibly to promote the sustainable re-use of material resources.

Household users should contact their local government office, for details of where and 
how they can take these items for environmentally safe recycling. This product and its 
electronic accessories should not be mixed with other commercial wastes for disposal.

General Instructions

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-VAS-X / HSE-VBS-X 
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.

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

Indicates an imminently hazardous situation which, if not 
avoided, will result in death or serious injury.

WARNING

Indicates a potentially hazardous situation, which if not 
avoided, could result in death or serious injury.

CAUTION

Indicates a potentially hazardous situation which, if not 
avoided, may result in minor or moderate injury or property 
damage.

WARNING

Do not use this Water Heater if any part has been under water. Immediately contact 
an Authorised Service Technician 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.

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 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 Customer Care Centre.

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

Water Heater manual.

Specifications

Model

HSE-VAS-X

HSE-VAS-X
HSE-VBS-X

Volume [L]

15

25

35

50

Power [W]

HSE-VAS-X

2000

2000

2000

2000

HSE-VBS-X

NA

NA

3000

3000

Voltage/Frequency [V/Hz]

230~/50

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

0.419

0.511

0.540

0.650

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

HSE-VAS-X

15

29

38

54

HSE-VBS-X

NA

NA

24

35

Temperature range [°C]

25-75*

Rated water 
pressure

N/cm

2

80

Water head (metres)

80

Inlet/Outlet connections [inch]

½ BSP

Net Weight (kgs.)

11.8 

15.8 

17.2

22

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

Dimensions

Model

15 L

25 L

35 L

50 L

Model

15 L

25 L

35 L

50 L

A (mm)

440

644

615

832

D (mm)

123

123

152

152

B (mm)

338

338

395

395

E (mm)

173

191

193

193

C (mm)

100

100

100

100

Figure 1

A

C

E

D

ØB

Figure 2

Without Service Cover

With Service Cover

5

4

9

10

2

1

5A

7

6

8

11

3

PART 

DESCRIPTION

PART

DESCRIPTION

1

Cold water inlet

7

Red sticker

2

Hot water outlet

8

Heating element and Anode

3

Multi-function safety valve

9

Thermostat

4

Temperature control knob

10

Thermal cut-out

5

Front Service cover

11

Wall mount bracket

5A

Bottom Service cover

12

Glass wool

6

Blue sticker

13

Wire harness and routing

 Not illustrated for clarity purpose.

Safety Precautions

During Installation

Do not install the Water Heater where 
there is direct sunlight or rain. It is has 
to be installed indoor only.

Figure 3

CAUTION

Do not install the Water Heater where 
water splashes on  the Water Heater.

Figure 4

CAUTION

Installation

Before installing, ensure the tools Adjustable wrench, Teflon tape, Measuring tape, 
Hammer, Bubble level indicator and Impact drill tool are available.

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 
vertically with water connection at the 
bottom.

Figure 5

Water

Heater

6 inch.

6 inch.

Ceiling

Ceiling

Wall

Wall

 

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.

Figure 6

False 

Wall

Solid

Concrete 

Wall

Solid

Concrete 

Wall

3 ft.

Installation (contd...)

Use a drill bit with diameter of 12 mm 
to drill 2 holes at least 90 mm deep in 
the wall (Step 3). The two holes should 
be aligned horizontally. The horizontal 
distance between 2 holes is 150 mm. 

Figure 7

3

1

2

Hole

90 mm

Drilling

Tool

150 mm

150 mm

Concrete

Wall

Concrete

Wall

 

Insert the Expansion Anchor into the 
hole (Step 1). 

 

Insert the Hanging screw over the 
Expansion Anchor and tighten the 
Hanging screw by rotating it till it gets 
fixed steadily (Step 2).

Figure 8

Expansion 

Anchor

Hole

1

2

Concrete 

Wall

Concrete 

Wall

Hanging 

Screw

Concrete 

Wall

Concrete 

Wall

Mount the Water Heater on the Hanging screw through Wall mount bracket. Tug 
downwards on the Water Heater to ensure that the Water Heater is fixed steadily.

Figure 9

Water 

Heater

Water
Heater 

3

Wall mount

bracket

Hanging

Screw

Concrete 

Wall

Concrete 

Wall

Wall

Wall

1

Water
Heater 

Wall

Wall

2

User Manual

Water Heater

  

HSE-VAS-X / HSE-VBS-X

15, 25, 35 and 50 Litres

A. O. Smith Advantage...

Blue Diamond® Glass Lining

2X Corrosion Resistance, enhanced durability.

Glass Coated Heating Element

Resistant to scale formation, longer life for the Heating Element.

Temperature Control

Choice of bathing water 25°C - 75°C.

Express Heat (Only on VBS-X)

33%* faster heating, Save your time.

Long-Lasting Anode Rod

2X lifespan compared to normal magnesium anode. A customised alloy 
that works even in harsh water conditions.

Thermal Cut-out and Multi-function Safety valve

Ensure safety of your family.

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.

ISO

9001:2015

CERTIFIED

Product colour and image shown may vary from the actual product. 
Part No. : 335271-086_A 

 

 Date: 10-08-2020

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