• 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
filling 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
Operation
Troubleshooting
Circuit Diagram
Figure 6
Figure 7
• Use Mounting Template to mark
holes (Fig. 6 : Step 1).
• Use a drill bit with diameter of
10mm to drill 2 holes at least
60mm deep in the wall (Fig. 6 :
Step 3). The two holes should be
aligned horizontally.
• Insert the Expansion anchor into
the hole (Fig. 7 : Step 1).
• Place the Mounting screw over
the Expansion anchor, tighten the
Mounting screw by rotating it till
it gets fixed steadily and maintain
a distance of 15mm (between
concrete wall and Mounting
screw head) to mount the Water
Heater (Fig. 7 : Step 2).
1
2
3
60 mm
Concrete
Wall
Concrete
Wall
Drilling Tool
Hole
Hole
1
2
Concrete
Wall
Concrete
Wall
Concrete
Wall
Concrete
Wall
Expansion
Anchor
Expansion
Anchor
Mounting
Screw
Mounting
Screw
Hole
Hole
15 mm
15 mm
Figure 10
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, filling
the Water Heater and the piping.
3. Close 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
Water Heater completely, repair the leaking
joint and then refill the Water Heater.
• 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, 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 faucet water pipe.
CAUTION
Figure 11
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
firm contact with the plug. Ensure that
reliable earthing has been done.
• Please turn OFF the power supply to the Water Heater prior to draining
the Water Heater.
CAUTION
* Multi-function Safety Valve comes included with the Water Heater.
** Flexible Hoses to be procured by the customer, not part of standard product.
Connecting to Water Supply
Hot Water Tap
Cold Water Tap
**Flexible Hose
**Flexible Hose
Red Cap
Blue Cap
*Multi-function Safety Valve
Discharge Lever
Discharge Outlet
Figure 9 Installation Diagram
• Make necessary plumbing with reference to the Installation Diagram (Fig. 9).
• 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].
• Ensure the Water Heater is mounted on the Metal Bracket behind the
Rear cover as shown in Figure 8.
CAUTION
• Do not install the Water Heater on the Rear cover, Water Heater can fall off
and can cause damage or injury.
WARNING
Figure 12
Draining the Water Heater Tank
Whenever the Water Heater is not used for an extended period, unplug the unit
and drain. If it is below freezing temperature, you will need to unplug the unit
and drain it.
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. (Fig. 14).
This Water Heater comes with factory pre-set temperature (Refer Page 3).
Heating mode
Standby mode
When the actual temperature of the water is less than the pre-set
temperature, it enters into Heating mode. The Heating indicator lamp glows
as shown in (Fig. 13).
After the Water Heater reaches pre-set temperature, it will enter into the
Standby mode due the thermostat cut-off and the Heating indicator lamp
switch off.
Figure 13
When the temperature of the water drops from the pre-set temperature due to
usage of water, the Water Heater again enters into the Heating mode.
Modes
There are two types of modes depending on the actual water temperature
inside the inner tank of the Water Heater:
Heating
indicator
lamp
Discharge Outlet
Discharge Lever
Figure 14
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,
Contact Customer Care Centre.
Figure 15
Heating
Element
L
PE
N
Black
Thermostat
Red
Red
Green/
Yellow
Black
Tank
White
White
Thermal Cut-out
Brown
Red light
7
8
9
10
12
13
14
11
Problems
Possible Cause(s)
Solution
Foul smell from hot
Presence of organic
Provide treated water
water.
matter in input water.
at the input.
No usage of hot water If the Water Heater is not
for a long time period.
used for an extended period
of time, drain the water from
the Water Heater. Ensure
water is filled back before
use of Water Heater.
High electrical
Contact Customer Care
conductivity of water
Centre. Anode options
due to dissolved
available for highly
solids in input water.
conductive water.
Heating indicator
No power supply to
Check power supply and
lamp does not glow.
the Water Heater.
switch ON electrical switch.
Thermal Cut-out has
Call Customer Care Centre.
tripped or problem in
internal wiring.
Heating indicator
Heating Element
Call Customer Care Centre.
lamp glow but no
breakdown or internal
hot water.
wiring error.
Water temperature
Improper thermostat
Call Customer Care Centre.
is too high.
operation.
Thermal Cut-out not
Call Customer Care Centre.
operating.
Water heats slowly.
Low Voltage at supply Check voltage at supply
mains. mains.
Heating Element is
Call Customer Care Centre.
faulty.
Piping connection
Connection not sealed. Re-connect piping, using
leaks.
Teflon Tape.
Water leakage from
Leakage in tank or
Switch OFF power
product.
other parts.
immediately and call
Customer Care Centre.
Water dripping from
Non-return valve is
Install non-return valve at
Multi-function Safety installed close to the
a distance of at least 40 feet
Valve during
inlet of the Water
from the inlet of the Water
heating. Heater.
Heater
, (Refer page 9)
if problem still persists
call Customer Care Centre.
Problems
Possible Cause(s)
Solution
• Place the Water Heater on the Mounting screw through the Metal Bracket.
Tug downwards on the Water Heater to ensure that the Water Heater is fixed
steadily on the Metal Bracket.
Figure 8
Rear cover
Wall Mount
Bracket
Mounting
Screw
Concrete
Wall
Concrete
Wall
Rear cover
Metal
Bracket
Mounting
Screw
Metal
Bracket
Rear cover
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 infirm person in the bath
unsupervised.
CAUTION
HOT
Note:
The Multi-function Safety Valve may drip during the usage of the heater.
As the water is heated, it expands and tries to flow 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.
• 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 precautions 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 filled
completely in the Water Heater before switching it ON.
• Make sure a suitable Teflon 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
