A.O. Smith HSE-HAS User manual

User Guide
Water Heater
HSE-HAS/HSE-HAS-PLUS
15, 25, 35 and 50 Litres
Superior quality.
Wired remote control.
EXPERT SERVICE
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
[phone] (Send SMS) or
[email protected]
*Remote Control
*Applicable only for HSE-HAS-PLUS models

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-ecient 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, ghts 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
Customer Care No. 1800-103-2468/1860-500-2468.
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 rst 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-ecient solutions.
About A. O. Smith

Contents
What's in the box?
User Guide
HSE-HAS and HSE-HAS-PLUS models
USER GUIDE
Wall Mounting
Accessories
Electric Water
Heater with Wired
Remote Control
Remote
Accessories
Read Before Operation......................................................................................... 1
General ........................................................................................................................ 2
Specications............................................................................................................ 3
Key Features.............................................................................................................. 5
Safety Precautions.................................................................................................. 6
Installation................................................................................................................. 6
Conversion from Wall Mounting Installation to Floor Mounting....... 9
Connecting Multi-function Safety Valve....................................................... 10
Connecting to Water Supply.............................................................................. 12
Operation ................................................................................................................... 14
Troubleshooting...................................................................................................... 20
Circuit Diagram........................................................................................................ 22
Warranty ..................................................................................................................... 23
Jurisdiction ................................................................................................................ 24
Expert Company Service...................................................................................... 24
Service and Maintenance .................................................................................... 26

1
On Receipt
It is our policy to promote safe delivery of all orders. This product shipment has been thoroughly
checked, packed and quality certied 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/HSE-HAS-PLUS 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.
Read Before Operation

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
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 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
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
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/HSE-HAS-PLUS 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
Specications
Note: The above conguration is also available in LHS models
Model 15 Ltrs 25 Ltrs 35 Ltrs 50 Ltrs
A [mm] 320 320 395 395
B [mm] 604 804 810 1015
C [mm] 100 100 100 100
Model 15 Ltrs 25 Ltrs 35 Ltrs 50 Ltrs
D [mm] 126 126 149 149
E [mm] 180 380 260 380
F [mm] 334 334 409 409
Dimensions
*The set temperature may vary ± 5 °C.
Note: The above conguration is also available in LHS models.
Model
HSE-HAS HSE-HAS HSE-HAS HSE-HAS
HSE-HAS- HSE-HAS- HSE-HAS- HSE-HAS-
PLUS PLUS PLUS PLUS
Volume [L] 15 25 35 50
Power [W] HSE-HAS 2000
HSE-HAS-PLUS 2000 3000
Voltage/Frequency [V/Hz] 230~/50
Actual Stdg. Loss HSE-HAS 0.507 0.618 0.631 0.742
[kWh/24h/45°C di.] HSE-HAS-PLUS 0.558 0.680 0.706 0.816
Reheating Time for HSE-HAS 20 30 38 54
35°C rise [in min.] HSE-HAS-PLUS 20 30 24 35
Temperature range [°C] 25-75*
Rated water pressure N/cm2 80
Water head (metres) 80
Inlet/Outlet connections [inch] ½ BSP
Net Weight (kgs) 12 18 21 26
Note: Actual product may vary from the image shown.
C
DE
F
ØA
B
Front view
Rear view
Right view
C
D E
F
ØA
B
Front view
Rear view
Right view
Right Hand Side Inlet Outlet Models Left Hand Side Inlet Outlet Models
Figure 1

4
Part Description Model
1 Cold water inlet pipe with diuser All Models
2 Hot water outlet pipe All Models
3 Multi-function Safety valve All Models
4 Temperature Control Knob HSE-HAS models
4A Wired Remote Control HSE-HAS-PLUS models
5 Thermostat HSE-HAS models
5A Thermistor HSE-HAS-PLUS models
6 Blue sticker All Models
7 Red sticker All Models
8 Anode All Models
9 Heating Element All Models
10 Thermal Cut-out All Models
11 Installation Bracket All Models
Figure 2
Note: The above image shown is Right Hand Side model.
Without Service CoverWith Service Cover
4
3
1
7
8
10
9
5
11
4A
5A
6
2

5
Key Features
Note: A. O. Smith reserves the right to amend or modify the specications and features at any
time, as and when required without any prior notication.
Adjustable Thermostat:
Sets the temperature between
25ºC to 75ºC. (HSE-HAS)
Heating Element:
More ecient glass
coated Heating Element.
Insulation:
Better insulation with
Advanced Injected PUF.
Blue Diamond® Glass-Lining:
Protects inner tank from
corrosion.
LED Display Board:
Indicates the water temperature,
energy consumed and error
messages if there is a failure.
Digital Temperature Setting:
Sets the temperature between
25ºC to 75ºC.
Wired Remote Control:
Controls Water Heater functions
and diagnoses certain fault
conditions.
Energy Meter:
Displays total energy
consumption.
Express Heat:
Provides 33% faster heating
than 2 kW Water Heaters
(For HSE-HAS-PLUS 35 and
50 Litres)
Key Feature for HSE-HAS and HSE-HAS-PLUS
Other Feature for HSE-HAS-PLUS
* As compared to a regular 2 kW Water Heater

During Installation
Do not install the Water Heater where there is
direct sunlight or rain. It has to be installed
indoor only.
6
Do not install the Water Heater where water
splashes on the Water Heater.
Figure 3 Figure 4
CAUTION
Before installing, ensure that the following tools are available:
Figure 5
Tools Required
Hammer
Bubble Level Indicator Measuring Tape Impact
Drill Tool
Adjustable
Wrench
Teon Tape Ruler
CAUTION
Safety Precautions
Installation

7
Figure 6
Mounting the Water Heater
• It is recommended as per IS 302-1 to have
6 inches clearance from wall.
• Select a place to mount Water Heater
horizontally with water connection at the
side.
• 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 lled with water.
Figure 7
Solid
Concrete
Wall
Solid
Concrete
Wall False
Wall
False
Wall
3 ft.
Water Heater
6 inch
6 inch
Ceiling Wall
Figure 8
• Use a drill bit with diameter of 12 mm to
drill 2 holes at least 90 mm deep in the wall
(Fig. 8 : Step 3). The two holes should be
aligned horizontally. The distance (E)
between 2 holes is given in the below table
(Fig. 8 : Step 2).
• Insert the Expansion Anchor into the hole
(Fig. 9 : Step 1).
• Place the Hanging Screw over the
Expansion Anchor and tighten the Hanging
Screw by rotating it till it gets xed steadily
(Fig. 9 : Step 2).
Figure 9
Hole
1
2
Concrete
Wall
Concrete
Wall
Expansion
Anchor
Expansion
Anchor
Concrete
Wall
Concrete
Wall
Hanging
Screw
Hanging
Screw
1
2
3
Hole
90 mm
E
E
Drilling
Tool
Concrete
Wall
Concrete
Wall
Model 15 Ltrs 25 Ltrs 35 Ltrs 50 Ltrs
E [mm] 180 380 260 380

• Place the Water Heater on the Hanging Screw through Wall Mount Bracket (Fig. 10).
Tug downwards on the Water Heater to ensure that the Water Heater is xed steadily.
Figure 10
DANGER
Hot water is dangerous, especially for 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 inrm person in the bath unsupervised.
HOT
WallWall
Water
Heater
Water
Heater
WallWall
Water
Heater
Water
Heater
2
3
Wall Mount
Bracket
Wall Mount
Bracket Hanging Screw
Hanging Screw
Concrete
Wall
Concrete
Wall Water
Heater
Water
Heater
1
8

9
Conversion from Wall Mounting Installation to Floor Mounting
Step 1: Factory default installation (wall hung). Step 2: Remove the cap and unscrew the Tank
bolt with the socket wrench. Unscrew the screw
and remove the Wall mount bracket and
Bracket support as shown in the below gure.
Step 3: Turn 90 degrees and remove four oor
mounting caps.
Step 5: Assembly nished depiction. Step 6: Floor installation.
Step 4: Use four screws (accessories) to x the
two Wall mount brackets in place.
Floor
mounting
cap
Note: The Water Heater comes with default wall hung installation. The same should not be used for
oor mounting. Separate oor mounting accessories have been provided for oor mounting option.
Socket wrench
Step 2.1:
Remove
cap
Step 2.2:
Loosen Bolt
using Socket
wrench
Step 2.3:
Remove
Tank bolt
Step 2.4:
Remove
Screws using
Screw driver
Cap
Tank bolt
Wall mount
bracket Bracket support
Screw

10
Note: The Multi-function Safety Valve may drip during the usage of the heater. As the water is
heated, it expands and tries to ow back 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,
Discharge Outlet is provided to discharge water from the Water Heater. To avoid dripping, it is
recommended to install non-return valve at a distance of at least 40 feet away from the inlet of
the Water Heater.
Connecting Multi-function Safety Valve
Figure 11
Wrap the threaded part of the cold water inlet pipe with Teon 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 xed.
Discharge Outlet

• The Multi-function Safety valve should never be removed or blocked by any means to
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.
• Discharge Outlet is provided to release the discharge from the Water Heater 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,
therefore it is recommended to take pre-cautions while discharging water from the Water
Heater.
• It is recommended to operate the Discharge Lever in the Multi-function Safety valve on 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.
• Ensure that the Water Heater is in power OFF condition when the Discharge Lever is being
operated. Ensure that the water is lled completely in the Water Heater before switching it
ON.
• Ensure that the insulation of Multi-function Safety valve is not damaged while tightening.
CAUTION
11

12
• Make sure a suitable Teon 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.
CAUTION
* Flexible Hoses to be procured by the customer, not part of standard product.
• Make necessary plumbing with reference to the Installation Diagram (Fig. 11).
• A. O. Smith recommends 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.
• Connect the cold water pipe to the inlet [Blue Cap].
• Connect the hot water pipe to the outlet [Red Cap].
Connecting to Water Supply
Figure 13 Installation Diagram
Right Hand Side Inlet Outlet Models (Refer page 3 )
Left Hand Side Inlet Outlet Models (Refer page 3 )
Discharge Lever
Multi-function
Safety Valve
Hot Water Tap
Cold Water Tap
Discharge Outlet
*Flexible Hose
Discharge Lever
Multi-function
Safety Valve
Hot Water Tap
Cold Water Tap
Discharge Outlet
*Flexible Hose

13
• Do not install the Wired Remote Control where water splashes on the Wired Remote Control.
• It is recommended that the Wired Remote Control should be installed on the Remote
Bracket.
• Do not use wet hands while operating the Remote.
• Make sure to install the Wired Remote Control close to the Water Heater.
• Do not splash water directly or clean with benzene, pesticides, thinner, alcohol, etc., but use
a soft, dry cloth to clean the Wired Remote Control.
CAUTION
Installation of Wired Remote Control
For convenience of operation, please install the Wired Remote Control on the wall near the Water
Heater. The length of the wire for Wired Remote Controller is approximately 8 feet.
1. Mark the holes on the wall. The 2 holes should be aligned vertically. The vertical distance
between the 2 holes should be 24 mm (Fig. 13).
2. Drill 2 holes of 30 mm depth on the wall by using an electric Impact Drill tool (Fig. 8) of diameter
6 mm bit.
3. Fix the bracket on the wall by Expansion Anchor and Screw as shown in (Fig. 12).
Figure 12 Figure 13
WallWall Screws
Bracket
Expansion Anchor
24 mm24 mm
Installation of Bracket for Wired Remote
Control
Bracket for Wired Remote Control
30 mm30 mm

14
• 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 lling is completed,
then only the power supply should be switched ON.
• Do not splash water directly or clean with benzene, pesticides, thinner, alcohol, etc., but use
a soft, dry cloth to clean the Water Heater.
CAUTION
Figure 14
Filling the Water Heater Tank
1. Open a nearby hot water faucet to permit air to escape.
2. Open the cold water inlet valve fully, lling the Water Heater and the piping.
3. Close hot water faucet when water ows.
4. Check all the connections to see if there is any leakage. In case of a leakage, drain the Water
Heater completely, repair the leaking joint and then rell the Water Heater.
Operation

15
Figure 15
• 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, conrm 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.
CAUTION
Connecting to Electrical Supply
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 rm contact with the plug. Ensure that reliable earthing has
been done.

Temperature Control Knob (HSE-HAS models)
Switch on the Water Heater’s power supply. The Power indicator lamp glows.
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.
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. 18).
After the Water Heater reaches set
temperature, it will enter into the Standby
mode due to the thermostat cut-o and the
Power indicator lamp glows and Heating
indicator lamp switch o as shown in (Fig. 19).
Figure 19Figure 18
RHS LHS
Heating
indicator
lamp
Power
indicator
lamp
RHS LHS
Heating
indicator
lamp
Power
indicator
lamp
Modes
There are two types of modes depending on the actual water temperature inside the inner tank of
the Water Heater:
Figure 17Figure 16
Left Hand Side Inlet Outlet ModelsRight Hand Side Inlet Outlet Models
RHS LHS
16
When the temperature of the water drops by 5°C from the set temperature or due to usage of water,
the Water Heater again enters into the Heating mode.