A.O. Smith CEWHR 35 User manual

User Guide
Water Heater
CEWHR 35, 50, 70 and 100 Litres
Quick heating.
Wired remote control.
EXPERT COMPANY SERVICE
www.aosmithindia.com
Toll Free No.: 1800-103-2468 or
SMS us: [phone] or
E-mail us: [email protected]
Monday to Friday: 9 am to 8 pm.
Saturday & Sunday: 9 am to 6 pm.
# For calls registered at A. O. Smith call centrebefore 4 pm only. For more details please call
our TollFree No. 1800-103-2468 or log on to www.aosmithindia.com.
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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 tank. 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. 1800-103-2468.
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 started 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 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.
About A. O. Smith

Read Before Operation.......................................................... 1
General.................................................................................. 2
Specifications........................................................................ 3
Key Features .......................................................................... 5
Safety Precautions................................................................. 6
Installation ........................................................................... 6
Connecting Safety Valve ....................................................... 9
Connecting to Water Supply................................................. 10
Operation .............................................................................. 12
Troubleshooting.................................................................... 18
Circuit Diagram .................................................................... 19
Warranty................................................................................ 20
Jurisdiction............................................................................ 21
Expert Company Service ....................................................... 21
Service and Maintenance ..................................................... 23
Contents
What's in the box?
Electric Water Heater with
wired Remote control Wall Mounting Accessories
Safety Valve Discharge
Tube
User Guide
Remote
Accessories

1
Read Before Operation
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 CEWHR water heater.
Do not operate before reading manual supplied with this product.
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.

2
General
Indicates a potentially hazardous situation, which if not avoided, could
result in death or serious injury.
ndicates 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
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 a Qualified 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.
2. Verify that the voltage being supplied corresponds to that which is marked on the
water heater manual.
DO NOT use this water heater if any part has been under water. Immediately contact a
Qualified Service Technician to inspect the water heater and contact A. O. Smith Service
personnel to 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 CEWHR 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
Specifications
Note: Image may vary from the actual product.
Dimensions
Model CEWHR CEWHR CEWHR CEWHR
35 50 70 100
A [mm] 760 880 905 1070
øB [mm] 395 395 463 463
C [mm] 100 100 100 100
Figure 1
AB
C
Ø
Model (Horizontal Wall Mounted) CEWHR 35 CEWHR 50 CEWHR 70 CEWHR 100
Volume [L] 35 50 70 100
Power [kW] 1/1.5/2.5
Voltage/Frequency [V/Hz] ~220-230/50
Actual Stdg. Loss [kWh/24h/45°C diff.] 0.684 NA 0.920 NA
Reheating Time for 35°C rise [in min.] 49 67 88 110
Temperature range [°C] 35-75 ± 5
Rated water N/cm2 80
pressure Water head (metres) 80
Inlet/Outlet connections [inch] ½ BSP
Net Weight (kgs) 22 24 31 34

4
Figure 2
1 Cold water inlet pipe with diffuser
2 Hot water outlet pipe
3 Safety Valve
4 Wired Remote control
5 Blue Cap
6 Red Cap
7 Anode
8 Heating Element
9 Thermal Cut-out
10 Installation Bracket
Item Description
1
3
7
9
8
10 2
5
4
6
Without Service Cover With Service Cover

5
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 more corrosion resistant than any other in the industry.
Safety Valve
The safety valve is designed to automatically relieve and discharge water, in case
the pressure overshoots the preset limits.
Dual Glass Coated Heating Elements
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 elements. Dual element helps in quick
water heating.
Anode Rod
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.
Remote Controls
The LED displays set temperature, actual temperature, timer, clock, etc. The user
can select the set temperature within the range of 35°C to 75°C. It is easy to
operate the water heater with wired remote control even if the water heater is
placed in an enclosed area.

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

7
Figure 6
Mounting the Water Heater
 Before locating the position for
installation of the water heater, make sure
that there is sufficient clearance between
the ceiling and the side wall.
 Select a place to mount water heater
horizontally with water connection at the
bottom.
 Water heater must be located within 3-1/2ft. (approx.) from a grounded 220V-230V
electrical outlet.
 Make sure that the wall can withstand at least twice the weight of the water heater
when completely filled with water.
 /RFDWHZDWHUKHDWHULQDQDUHDZKHUH
leakage of the tank or connections will
not result in damage to the area
adjacent or to lower floors of the
structure.
 7KH6DIHW\YDOYHFDQGULSGXULQJWKH
heating cycle of the water heater to
relieve excess water due to heat
expansion. So, the drain should always
be exposed to the atmosphere and
should not be blocked. Make sure the
Discharge tube is continuously facing
downward and is in a frost free
ambience.
Figure 7
Figure 8
Water
Heater
Ceiling Wall
3-1/2 ft
Solid
Concrete
Wall False
Wall