
Front SideSize: 420 mm (W) x 297 mm (H)Red Line Mark are for Folding. Not to be Printed
7
11 12 13 14
8 9 10
Plumbing instructions
Figure 10 Installation Diagram
Hot Water
Ta p
Cold Water
Ta p
*Flexible
Hose
*Flexible
Hose
Red Cap
Teflon
tape
**Multi-function
Safety valve
Discharge
Red Cap
1
3
2
Teflon
tape
*Flexible Hoses to be procured by the customer, not part of standard product.
**Multi-function Safety valve (MFSV) comes included with the Water Heater.
1. Remove MFSV from the inlet pipe by rotating it in anti-clockwise direction.
2. Wrap the Teon tape around the inlet and outlet connections of the Water Heater to
prevent leakage.
3. Connect MFSV to the inlet pipe by hand tightening it in clockwise direction.
4. Make necessary plumbing with reference to the Installation Diagram. (Refer
“Installation Diagram”)
5. Connect the cold water pipe to the inlet [Blue Cap].
6. Connect the hot water pipe to the outlet [Red Cap].
Note:
•Make sure to connect Multi-function Safety valve to the Water Heater before
connecting inlet to the cold water tap.
•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.
•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 (an external valve provided before cold
water tap). 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.
•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(through the Multi-function Safety valve) 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.
•Make sure a suitable Teon 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.
Operation
Filling the Water Heater Tank
Figure 11 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 completely,
repair the leaking joint and then rell
the Water Heater.
•This Water Heater should not be operated with insucient 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.
Connecting to Electrical Supply
Figure 12 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.
•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, conrm 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.
Temperature Control Knob
Figure 13
Heating
lamp
Power
r
lamp
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.
Modes
There are two types of modes depending on the actual water temperature inside the
inner tank of the Water Heater:
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“Figure
14”.
Figure 14
After the Water Heater reaches set
temperature, it will enter into the
Standby mode due the thermostat cut-
o and the Power indicator lamp glows
and Heating indicator lamp switch o as
shown in “Figure 15” .
Figure 15
When the temperature of the water drops by 5°C from the set temperature due to
usage of water, the Water Heater again enters into the Heating mode.
Draining the Water Heater Tank
Whenever the Water Heater is not used for an extended period or if the product is
below freezing temperature, you will need to unplug the unit and drain it.
Figure 16
Discharge Outlet
Discharge Lever
1. Switch OFF the electric supply to the
Water Heater.
2. Open the hot water faucet until the
water runs cool.
3. Close cold water supply.
4. Drain the water by lifting the
Discharge Lever of the Multi-function
Safety valve upwards. (Refer“Figure
16”)
Please turn o the power supply to the Water Heater prior to draining the Water
Heater.
A. O. Smith Colour Match System®
Colours shown are only indicative and may vary
from actual colours available.
A. O. Smith Colour Match System® allows your Water Heater to match the colours of your
bathroom. The product of your choice comes with either white or ivory body colours,
along with the coloured front panels as in the following table.
Models SAS SDS* SGS*
Decorative front panel
(Service Cover)
White or ivory Blue or Red Red
Body Colour White or ivory White or ivory White or ivory
You have the option of changing this panel to match your bathroom decor at a nominal
cost (for SAS models).
* You have the option of changing this panel to match your bathroom decor at a no
cost. This option is available only one time after purchase (for SDS and SGS models).
Call the A. O. Smith Customer Care Centre [1800-103-2468/1860-500-2468] or visit
www.aosmithindia.com to register your product within 60 days of purchase and ask
for one of the Decorative Front Panel colour options.
Changing the Decorative Front Panel
Please follow the instructions as shown in“Figure 17”.
Figure 17
1. Pull out the Knob. 2. Unscrew the screw on
the Decorative Front
Panel.
3. Remove the Decorative
Front Panel to change.
•Please ensure to switch o 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.
HOT
Scalding
Hot water is dangerous, especially for the young children,
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 inrm person
in the bath unsupervised.
Troubleshooting
The Water Heater may not operate as desired if used incorrectly or there is a minor
cause, even though the product has no fault. In these cases, check the following issues
to solve simple problems without the help from the Customer Care Centre. If the
problem does not solve after checking the following issues, call Customer Care Centre.
Problems Possible Cause(s) Solution
Power indicator lamp and
Heating indicator lamp
does not glow.
No power supply to the
Water Heater.
Check power supply
and switch ON electrical
switch.
Thermal Cut-out has
tripped or problem in
internal wiring.
Call Customer Care
Centre.
Power indicator lamp and
Heating indicator lamp
glow but no hot water.
Heating Element
breakdown or internal
wiring error.
Call Customer Care
Centre.
Water temperature is too
high.
Improper thermostat
operation.
Call Customer Care
Centre.
Thermal Cut-out not
operating.
Call Customer Care
Centre.
Water heats slowly. Low voltage at supply
mains.
Check voltage at supply
mains.
Scale deposition. Call Customer Care
Centre.
Piping connection leaks. Connection not sealed. Re-connect piping, using
Teon tape.
Water leakage from
product.
Leakage in tank or other
parts.
Switch OFF power
immediately and Call
Customer Care Centre.
Water dripping from
Multi-function Safety
valve during heating.
Non-return valve is
installed close to the inlet
of the Water Heater.
Install Non-return valve
at a distance of at least 40
feet from the inlet of the
Water Heater (Refer page
8), if problem still persists
call Customer Care Centre.
Problems Possible Cause(s) Solution
Foul smell from hot water. Presence of organic
matter in input water.
Provide treated water at
the input.
No usage of hot water for
a long time period
If the Water Heater is not
used for an extended
period of time, drain the
water from the Water
Heater. Ensure water is
lled back before use of
Water Heater.
High electrical
conductivity of water
due to dissolved solids in
input water.
Call Customer Care
Centre. Anode options
available for highly
conductive water.
Note: Call Customer Care No. 1800-103-2468/1860-500-2468.
Circuit Diagram
Figure 18
Heating
L
N
Green/Yellow
Black
Tank
Blue
Blue
White
White
Brown
Red Red
Red lightGreen light