A.O. Smith EWSH PLUS 15 User manual

Size: 210mm (H) x 148mm (W)
Part No.: 325172-000_R0
Approved on: 17-09-2012
Water Heater
EWSH PLUS 15 & 25 Litres
User Guide
Fit it &
Forget it
* Conditions Apply
Double coated 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
Made in India’s most
modern and advanced
water heater factory.
ADVANCED
TECHNOLOGY
SUPERIOR QUALITY EXPERT SERVICE
BEE 5 star rating. One of
the most energy efficient
water heater you can buy.
ENERGY SAVING
Wired remote controller,
temperature settings,
power ON/OFF, timer.
MORE FEATURES &
USER CONTROLS
MADE BETTER
Why people prefer an A. O. Smith water heater...
Part No.:
Revised on: 28-03-2013
Revision: All the logo with ® has been changed.
In front page Service Logo add.
In Key Features
In page 15 Guaranteed Service add.
In page 18 Kolkata address & Service
detail add.

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.
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?
Contents
User Instructions .................................................................................... 1
Specifications ......................................................................................... 2
Key Features ........................................................................................... 5
Installation.............................................................................................. 6
Directions for use................................................................................. 11
Troubleshooting ................................................................................... 13
Circuit Diagram .................................................................................... 14
Warranty ............................................................................................... 15
Jurisdiction ........................................................................................... 16
Guaranteed Service .............................................................................. 16
Warranty Card ...................................................................................... 17
Service and Maintenance..................................................................... 18
Electric Water Heater with
Wired Remote Controller
Mounting
Accessories
User Guide
Discharge Tube
Safety Valve
Water Heater
EWSH PLUS 15 & 25 Litres
User Guide
Fit it &
F
orget it
* Conditions Apply
Double coated 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
Made in India’s most
modern and advanced
water heater factory.
ADVANCED
TECHNOLOGY
SUPERIOR QUALITY EXPERT SERVICE
BEE 5 star rating. One of
the most energy efficient
water heater you can buy.
ENERGY SAVING
Wired remote controller,
temperature settings,
power ON/OFF
, timer.
MORE FEATURES &
USER CONTROLS
MADE BETTER
Why people prefer an A. O. Smith water heater...

User Instructions
Please read the instructions carefully before the installation or operation of the water heater.
This user guide is meant for your future reference and is applicable for the following models.
 EWSH PLUS - 15
 EWSH PLUS - 25
 EWSH PLUS 15 - LHS
 EWSH PLUS 25 - LHS
Please refer the invoice or the product nameplate for identifying the model name. Please follow
the instructions accordingly.
• Water heater shall be installed only by A. O. Smith recommended professional installers.
A. O. Smith shall not be responsible in case of installation of water heater by customers
themselves / unauthorised installers by using any installation materials.
• The water heater is forbidden to install vertically or alter the inlet and outlet side
configurations.
• The above products come in a default wall mounting configuration. Please refer the
instructions to convert this to a floor mounting configuration. Alternatively dial our
Customer Care No. 1.800.103.2468 for instructions and installation.
• In case of installation of water heater by customers themselves / unauthorised installers,
A. O. Smith shall not be liable either directly or indirectly for any adverse effects on
normal operation and service performance of the water heater, including but not limited
to pipeline leakage, harmful effects on or damage to the water heater body or damage
to the property / any other losses incurred by customer.
• After installation and operation of the water heater, users should inspect the water
heater regularly and make necessary maintenance according to the service conditions.
If any abnormality occurs, stop the operation of the water heater immediately and dial
our Customer Care No. 1.800.103.2468 for repair to ensure the normal, safe and reliable
operation of the water heater.
• Prior to any maintenance or repair of the water heater, please ensure to cut off the
power. Installers who are not recommended by A. O. Smith should not adjust or repair
the water heater.
• This water heater is equipped with safety valve. For the sake of safe operation, the
mounting position of the valve should not be changed without permission and the
blockage of valve drain outlet is strictly prohibited. The discharge tube must be provided
for the safety valve, mounted downwards continuously and should not be knotted in the
middle. The discharge tube shall be directly connected to the floor drain.
• Before installing the water heater, confirm that the power of water heater matches its
electric meter capacity and power wire.
• This water heater should be earthed reliably. It is prohibited to connect the earth wire to
neutral wire or tap water pipe.
1
Caution: Failure to follow the instructions provided in the user guide may lead to risk of
fire and could cause property damage and / or personal injury or death.
Warning: Power-on and operation will be permitted only after reliable grounding is
provided for the power socket. The water heater is strictly forbidden for use in
circumstances where no safe grounding or well-drained floor drain is provided.
In the installation area, it should be ensured that the water leakage of the water
heater or joints may not cause damage to the articles in adjacent region or lower
portion of the building.

Specifications
2
For Right Hand Side Inlet Outlet Models
For Left Hand Side Inlet Outlet Models
Note:
1. The inlet and outlet tubes are identified by blue and red ring caps respectively.
2. Please note that in all models (LHS and RHS variants) and in all configurations (wall &
floor mounted), the outlet tube should be vertically above the inlet. Refer figures 5A &
5B respectively.
3. The water heater should not be installed in any other configuration that may alter this
arrangement.
4. LHS variant should be used for left hand side plumbing connections and RHS variant
should be used for right hand side plumbing connections.
5. It is not permitted to install a RHS variant in left hand side configuration by rotating the
unit and vice versa.
6. Please note that the A. O. Smith logo visible in the front and in horizontal orientation
represents correct positioning of the unit.
Model EWSH PLUS 15 - LHS EWSH PLUS 25 - LHS
Volume [L] 15 25
Power [W] 2000 2000
Voltage/Frequency [V/Hz] ~230/50 ~230/50
Actual Stdg. Loss [kWh/24h/45°C diff.] 0.525 0.672
o
Max. Stdg. Loss [kWh/24h/45 C diff.]
[as per IS 2082:1993 amended in 2002] 1.138 1.386
Reheating Time for 35°C rise [in min] 20 35
Temperature range [°C] 35-75 35-75
2
Rated water pressure N/cm 80 80
Water head (metres) 80 80
Inlet/Outlet connections [Inch] ½ ½
Model EWSH PLUS - 15 EWSH PLUS - 25
Volume [L] 15 25
Power [W] 2000 2000
Voltage/Frequency [V/Hz] ~230/50 ~230/50
Actual Stdg. Loss [kWh/24h/45°C diff.] 0.525 0.672
o
Max. Stdg. Loss [kWh/24h/45 C diff.]
[as per IS 2082:1993 amended in 2002] 1.138 1.386
Reheating Time for 35°C rise [in min] 20 35
Temperature range [°C] 35-75 35-75
2
Rated water pressure N/cm 80 80
Water head (metres) 80 80
Inlet/Outlet connections [Inch] ½ ½

3
Dimensions and Part Descriptors
Part Descriptors
1 Outlet
2 Inlet
3 Wired Remote Controller
4 Red Cap
5 Blue Cap
6 Jacket
7 Left Cover
8 Right Cover
9 Service Cover
10 Anode
11 Heating Element
12 Tank
13 PU Insulation
14 EPS Insulation
15 Thermal Cutout
16 Installation Bracket
16 16
ED
Section F-F
15
11
14
10
13
12
14
1
2
Model EWSH PLUS - 15 EWSH PLUS - 25
A1 [mm] 628 908
A2 [mm] 641 921
B [mm] 80 80
C [mm] 310 310
D [mm] 167 247
E [mm] 260 380
85
4
9
F
F
HEATING
TIMER
TEST
6
7
B
A1
A2
C
3

4
Dimensions and Part Descriptors
1616
ED
Section F-F
15 11
14 10 13 12 14
1
2
8 5
4
9
F
F
Part Descriptors
1 Outlet
2 Inlet
3 Wired Remote Controller
4 Red Cap
5 Blue Cap
6 Jacket
7 Left Cover
8 Right Cover
9 Service Cover
10 Anode
11 Heating Element
12 Tank
13 PU Insulation
14 EPS Insulation
15 Thermal Cutout
16 Installation Bracket
Model EWSH PLUS 15 - LHS EWSH PLUS 25 - LHS
A1 [mm] 628 908
A2 [mm] 641 921
B [mm] 80 80
C [mm] 310 310
D [mm] 167 247
E [mm] 260 380
HEATING
TIMER
TEST 67
B
A1
A2
C
3
Caution:
*Safety valve has been provided
with the Water heater. The valve is
preset at 8 bar (0.8 MPa) rated
pressure. Install the valve on the
inlet side as shown in installation
diagram.
Warning:
Do not use the water heater
without installing the safety
valve. Once Installed, do not
detach or tamper the safety valve
in the water heater.

This is the only Horizontal Water Heater in India which gives you a 4 year*
warranty on the Glass Coated Heating Element.
4 year Warranty on Heating Element
4
5
Key Features
Anode Rod
Safety Valve
Thermal Cutout
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.
Double Coated Inner Tank
Glass Coated Heating Element
Wired Remote Controller
HEATING
TIMER
TEST
The safety valve is designed to automatically relieve and discharge water in case
the pressure overshoots the preset limits.
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.
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.
Double coating of the glass lining increases glass thickness and ensures good
glass coverage, thus reducing the risk of tank steel corrosion.
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.
Displays the water temperature, Timer selection allows you to set the time when
the heater will start to heat and Test Button for testing current leakage.
Temperature can be precisely set between 35°C to 75°C. It is easy to operate the
water heater with wired remote controller even if the water heater is placed in
an enclosed area.

Installation
Mounting
Fig. 2 Wall mounting bracket
6
A
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 available for the product. This clearance is
required for easy installation and maintenance. Refer
Fig. 1A or Fig. 1B for minimum clearances required
according to the model.
3. Use a drill bit with diameter of 10 mm to drill 2 holes
at least 90 mm deep in the wall (Fig. 3). The two holes
should be aligned horizontally. The horizontal distance
between the 2 holes is shown in the above table (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.
Fig. 3 Installation of
wall mounting bracket
Expansion tube
Hanger
Screw
90
Fig. 4 Inserting the water heater
into mounting bracket
Wall
Water
Heater
1
2
3
Fig. 1A Position for installation
Fig. 1A Applicable for models EWSH PLUS - 15
and EWSH PLUS - 25
Fig. 1B Position for installation
Fig. 1B Applicable for models EWSH PLUS 15 - LHS
and EWSH PLUS 25 - LHS
A (mm)
260
380
Model
EWSH PLUS - 15
EWSH PLUS 15 - LHS
EWSH PLUS - 25
EWSH PLUS 25 - LHS
Fig. 1A Position for installation
Fig. 1B Position for installation
Ceiling Wall
RHS
400 mm
400 mm
Water heater
Ceiling
Wall
400 mm
400 mm
LHS
Water heater