A.O. Smith HSE-SDS User manual

Size: 210mm (H) x 148mm (W)
Part No.: 326226-000_R0
Approved on: 04-04-2013
User Guide
* Conditions Apply
®
Blue Diamond glass lined
tank. Maximum protection
against hard water and
corrosion.
Get the best quality that
ensures you have a water
heater that works in
Indian water conditions.
Guaranteed* A. O. Smith
Service within 24 hours.
Call: 1.800.103.2468
ADVANCED
TECHNOLOGY
SUPERIOR QUALITY EXPERT SERVICE
BEE 5 star rating. One of
the most energy efficient
water heater you can buy.
ENERGY SAVING
Made in India’s most
modern and advanced
water heater factory.
MADE BETTER
Built well.
Built to last.
WHY EVERYONE PREFERS AN A. O. SMITH WATER HEATER...
Water Heater
HSE-SDS 6, 15 & 25 Litres
Fit it &
Forget it

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 container of
the water heater. This cutting edge technology prevents sediment and scaling, fights corrosion
and extends the life of your water heater. We also offer you an exciting range of colour options
for the front panel of your water heater. Choose the one that matches your bathroom décor
best.
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. 1.800.103.2468.
Or
Factory Address:
A. O. Smith India Water Heating Private Limited
Plot No. 300, Phase-2, KIADB Industrial Area, Harohalli, Kanakapura Taluk,
Ramanagara District - 562 112, Karnataka, India.
About A. O. Smith
A. O. Smith India Water Heating 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
th
is the 16 A. O. Smith manufacturing facility worldwide. 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.

What's in the box?
Electric
Water Heater
Mounting
Accessories
Discharge Tube
User Guide
User Guide
* Conditions Apply
®
Blue Diamond glass lined
tank. Maximum protection
against hard water and
corrosion.
Get the best quality that
ensures you have a water
heater that works in
Indian water conditions.
Guaranteed* A. O. Smith
Service within 24 hours.
Call: 1.800.103.2468
ADVANCED
TECHNOLOGY
SUPERIOR QUALITY EXPERT SERVICE
BEE 5 star rating. One of
the most energy efficient
water heater you can buy.
ENERGY SAVING
Made in India’s most
modern and advanced
water heater factory.
MADE BETTER
Built well.
Built to last.
WHY EVERYONE PREFERS AN A. O. SMITH WATER HEATER...
Water Heater
HSE-SDS 6, 15 & 25 Litres
Fit it &
F
orget it
Contents
Specifications ......................................................................................... 1
Key Features ........................................................................................... 2
Installation.............................................................................................. 3
Directions for use ................................................................................... 5
®
A. O. Smith ColourMatch System ........................................................ 6
Changing the Decorative Front Panel ................................................... 6
Troubleshooting ..................................................................................... 7
Circuit Diagram .......................................................................................7
Warranty ................................................................................................. 8
Jurisdiction ............................................................................................. 9
Guaranteed Service ................................................................................ 9
Warranty Card ...................................................................................... 10
Service and Maintenance..................................................................... 11

Specifications
Dimensions
1
Caution: *Safety valve has been factory fit with the water heater and set at 0.8 MPa
(8 Bar) rated pressure.
Warning: Do not tamper or detach the safety valve from the water heater.
1 Outlet
2 Inlet
3 Safety Valve*
4 Temperature Control Knob
5 Decorative Front Panel
6 Front Jacket
7 Back Jacket
8 Anode
9 Heating Element
10 Tank
11 Installation Bracket
12 PU Insulation
13 Thermal Cutout
Part Descriptors
Model HSE-SDS-006 HSE-SDS-015 HSE-SDS-025
Volume [L] 6 15 25
Power [W] 2000 2000 2000
Voltage/Frequency [V/Hz] ~230/50 ~230/50 ~230/50
Actual Stdg. Loss [kWh/24h/45°C diff.] 0.390 0.560 0.690
o
Max. Stdg. Loss [kWh/24h/45 C diff.]
[as per IS 2082:1993 amended in 2002] 0.792 1.138 1.386
Reheating Time for 35°C rise [in min] 6 18 29
Temperature range [°C] 25-75 25-75 25-75
2
Rated water pressure N/cm 80 80 80
Water head (metres) 80 80 80
Inlet/Outlet connections [Inch] ½ ½ ½
Model HSE-SDS HSE-SDS HSE-SDS
-006 -015 -025
A [mm] 317 373 444
B1 [mm] 317 373 444
B2 [mm] 348 405 483
C [mm] 258 348 383
12
11
10
9
8
7
13
6
C
4
2
1
3
5
A
B2 B1

2
Key Features
®
Blue Diamond technology increases the life of the inner tank. The lining is
stronger and more corrosion resistant than any other in the industry.
®
Blue Diamond Glass Lining
Glass Coated Heating Element
Anode Rod
The safety valve is designed to automatically relieve and discharge water in case
the pressure overshoots the preset limits.
Safety Valve
If the water temperature exceeds the highest preset level, the breaker rapidly
cuts off the live line and the neutral line simultaneously to assure safety.
Thermal Cutout
H
I
G
H
M
E
D
I
U
M
L
O
W
Temperature Control Knob
The temperature control knob allows you to set the temperature precisely
between 25°C to 75°C .
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.
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.
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.

Installation
Mounting
Fig. 1 Position for installation Fig. 2 Wall mounting bracket
3
1. Make sure that the wall can withstand at least twice the weight of the water heater when
completely filled with water.
2. Before locating the position for installation of the water heater, make sure that there is
sufficient clearance between the ceiling and the side wall. (Fig. 1)
3. Use a drill bit with diameter of 10mm to drill 4 holes at least 90mm deep in the wall (Fig.
3). The four holes should be aligned horizontally and vertically. The horizontal distance
between the 2 holes should be 120mm and the vertical distance should be 57mm. (Fig. 2)
4. Insert the expansion anchors into the holes. Place the wall mounting bracket over the
expansion anchors and tighten the screws on the bracket. (Fig. 3)
5. Place the water heater on wall mounting bracket (Fig. 4) using hanger hooks. Tug
downwards on the heater to ensure that the water heater is fixed steadily.
Wall
Fig. 3 Installation of wall mounting
bracket
Fig. 4 Inserting the water heater
into mounting bracket
Wall Water
Heater
Water
Heater
Wall
Water
Heater
Wall
1
2
3
*Flexible Hoses to be procured by the customer, not part of standard product.
Fig. 5 Installation diagram
Hot Water Tap
Cold Water Tap
Discharge Tube
*Flexible Hose
*Flexible Hose
Lever
To Drain
Safety Valve
Blue Cap
Red Cap
Water heater
Ceiling Wall

1. Open a hot water faucet nearby to permit the air to escape.
2. Open the cold water inlet valve fully, filling the heater and the piping.
3. Close the 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
heater completely, repair the leaking joint and then refill the heater.
Electrical Connections
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.
4
Caution:
• Connect the water heater using independent sockets, do not use 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 tap water pipe.
Attention:
• Make sure a suitable sealing tape is used for all connections to prevent leakage.
• Discharge tube should be installed downwards without any loops, folds or knots.
Ensure that the free end of the Discharge tube is placed over a suitable drain and away
from the users.
• Discharge tube is provided to release the discharge from the water heater(through the
safety valve) in case excessive pressure is developed. The contents of the discharge
from the Safety valve may be hot and may cause burns to the users and damage
nearby objects if not properly routed to a drain.
• It is recommended to operate the discharge lever in the 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 filled completely in the water heater before
switching it ON.
Water Filling
Plumbing
1. Make necessary plumbing with reference to the installation diagram. (Fig. 5)
2. A. O. Smith recommends nylon/SS braided hoses having a minimum pressure rating of
8 Bar and hoses should be compatible for hot water applications.
3. Connect the cold water pipe to the inlet [Blue Cap].
4. Connect the hot water pipe to the outlet [Red Cap].
5. Attach the discharge tube to safety valve as shown in installation diagram. (Fig. 5 & 6)

For draining water from the water heater, following steps
needs to be followed:
1. Switch off the electric supply to the water heater.
2. Open the hot water taps until the water is not hot any
more.
3. Close cold water supply.
4. Drain the water by moving the lever of safety valve in the
direction of the arrow as indicated in the diagram. (Fig. 6)
Draining
Fig. 6 Safety valve
5
Caution:
• Before using the water heater, make sure that it should be completely filled with water.
• Please turn off the power supply to the water heater prior to draining the water heater.
Warning: This water heater should not be operated with insufficient amount of water.
Failure to do so may result in damage to the water heater & injuries to the users. This
will also make the warranty null & void.
Caution:
• Once the mounting, plumbing, discharge tube, power connection and water filling
is completed, then only the power supply should be given.
• During repair or periodic maintenance, if necessary, the power cord or Internal
electrical wiring should be replaced by A. O. Smith Authorised service personnel only.
• It is not permitted for the power supply plug and cord to be replaced or altered by
unauthorised people or by the users themselves. This will make the warranty null and
void and may cause the water heater operation hazardous.
Directions for use
1. Switch on the water heater’s power supply.
The green indicator light glows.
2. Turn the thermostat knob clockwise for the
device to commence heating and change
the set temperature. A red light will glow.
[The set temperature increases if the
thermostat knob is turned clockwise.]
Temperature can be set in the range of
25°C to 75°C. Recommended to keep
thermostat knob notch position always in
medium or above level.
3. The red light’s switching off indicates the
heater has been heated to the set temperature.
Caution: Before using the water heater, make sure the inner tank is completely filled with
water and the power plug has been connected properly.
Fig. 7 MEDIUM
HIGH
LOW
Discharge Tube
Safety Valve
Port

®
A. O. Smith ColourMatch System
®
A. O. Smith ColourMatch System allows you to match your water heater to the colour of
your bathroom.
Please visit www.aosmithindia.com and choose your Decorative Front Panel colour options.
Call A. O. Smith Customer Care Centre [1.800.103.2468] to order the Decorative Front Panel.
Attention: The product of your choice comes with either white or ivory as a front panel of
the same colour. You have the option of changing this panel to match your
bathroom décor.
Pull out the Knob
Please follow the instructions as shown in Fig. 8
Changing the Decorative Front Panel
Unscrew Remove the Decorative
Front Panel to change
Fig. 8 Removing decorative front panel
Warning:
• Please ensure to switch off the power supply while changing the Decorative Front
Panel and pull out the power plug from the socket.
• An insulation layer is provided below the front panel which should not be replaced.
• While changing the front panel ensure that, none of the internal components are
damaged or removed.
6

7
Troubleshooting
Note: Call Customer Care Centre on 1.800.103.2468
Circuit Diagram
Element
Red Red Brown
Black
Thermostat
Green/Yellow
Black
White White
Thermal cutout
Green light Red light
Problem Possible Cause(s) Solution
• Green and Red No power to heater Turn on electrical switch. Check for
light off blown fuses or tripped breaker
• No hot water Thermal cutout switch open Call Customer Care Centre
Control circuit or internal Call Customer Care Centre
wiring error
• Green light on Non-functioning Call Customer Care Centre
Red light off thermostat
• No hot water Control circuit or internal
wiring error
• Water temperature Thermostat set is too high Call Customer Care Centre
is too high
Thermal cutout trips Call Customer Care Centre
• Water heats slowly Non-functioning element Call Customer Care Centre
• Thermostat does Non-functioning Call Customer Care Centre
not shut off thermostat
Improper calibration Call Customer Care Centre
• Piping connection Connection not sealed Call plumber
leaks
• Leaky cover Tank or parts leak Shut off power immediately and
Call Customer Care Centre