usha Aqua Horizon AH15AH Guide

2015
[email protected]
Storage water heater
INSTRUCTION MANUAL
AND WARRANTY CARD
Aqua Horizon 15/25L
(AH15AH/AH25AH)
Gurugram
S.NO: ...............................................................................................
CASH MEMO: .................................................. Date........................
DATE: ...............................................................................................
DEALER’S NAME AND ADDRESS: .................................................
..........................................................................................................
OWNER’S NAME & ADDRESS: .......................................................
..........................................................................................................

Special Features
Dear Customer,
Congratulations!
You are now the proud owner of an Usha Storage Water Heater.
Please read the instruction manual carefully before using and keep it
cautiously after reading for future reference.
Innovatively designed, using only the highest quality material and
components, your storage water heater is designed to offer trouble
free service.
This is another quality product from Usha International Limited. A
name synonymous with trust and reliability.
Best Wishes
1 2
High pressure resistance suitable for high rise buildings
Glassline Coated Heating Element:
Glassline Coated Heating Element offers superior heating
performance with its excellent resistance to both oxidation &
carbonization at high temp. setting. Also resists erosion against most
extreme and hard water conditions thus extending life span of heating
element with minimum energy loss
Heavy duty Magnesium Anode Rod to prevent rust and corrosion:
Magnesium Anode Rod protects enamelled tank from rust and
corrosion. Also enhances life of tank and element even with the usage
of hard water
High grade ABS material of outer body for better finish and strength
Whirlflow Technology for faster heating and energy savings
Blue Sapphire enamel coating on tank to prevent from rust and corrosion
External Temperature control knob
Best in class thick SPCC sheet and enamel coated tank to withstand
operating pressure upto 18 bar*
High Density PUF Insulation reduces heat loss and improves energy
efficiency
*Under Test Condition

Safety Features
3 4
Capillary type high precision Thermostat with highest safety UL Mark:
“Cut-off” and “Cut-in” functions regulate the power supply between a
narrow band of temperature range. Functioning of indicator lamps
during ‘cut-off’ and ‘cut-in’ indicates proper working of thermostat. This
device is provided with an adjustable knob to set the desired water
temperature.
Preset Thermal Cut out with CE mark:
A non-self resetting thermal cutout is provided as a safety device.
When the thermostat fails to function, this cut-off the power at 900C. The
thermal cutout has to be manually reset before the heater can start
operating again.
4 in 1 - Multi function Safety Valve (MFV):
The MFV used with this unit is a unique Safety Valve. This has four
functions:
1. Pressure Release Valve (PRV)
2. Non Return Valve (NRV)
3. Vacuum Release Valve (VRV)
4. Drain Device
16 Amp 3 Pin Power Plug
Dry Heating Protection
Weather Proofing IPX4
Caution and Installation Instructions
Before installing this water heater,check and confirm that the earthing on the supply
socket is reliably grounded. Otherwise, the electrical water heater can not be
installed and used. Do not use extension boards. Incorrect installation and use of
this electrical water heater may result in serious injuries and loss of property.
Special Cautions
• The supply socket must be earthed reliably. The rated current of the socket shall
not be lower than 10A. The socket and plug shall be kept dry to prevent electrical
leakage. Inspect frequently whether the plugs contact well with the socket.
Inspect method is as follows: insert the power supply plug into socket, after using
for half an hour, shut down the unit and pull the plug out, and inspect the plug
whether it scalds hand. If it scalds (over 50Ċ), please change another
well-contacted socket to avoid the plug being damaged, fire or other personnel
accidents result from bad-contacting.
• The installation height of the supply socket shall not be lower than 1.8m.
• The wall in which the electrical water heater is installed shall be able to bear the
load more than two times of the heater filled fully with water without distortion and
cracks. Otherwise, other strengthening measures shall be adopted.
• The pressure relief valve attached with the heater must be installed at the cold
water inlet of this heater(see Fig.1), and make sure it is not exposed in the foggy.
The water may be outflowed from pressure relief valve, so the outflow pipe must
open wide in the air; The pressure relief valve need to be checked and cleaned
regularly, so as to make sure it will not be blocked.
• To have longer life of Heating Element, ensure the water hardness should not be
more than 100TDS.

Technical Information
5 6
(Fig.1)
Thread screw
Drain handle
Pressure release hole
Hot waterCold water
Pressure relief valve
• When using the heater for the first time(or the first use after maintenance), the
heater can not be switched on until it has been filled fully with water. When filling
the water, at least one of the outlet valves at the outlet of the heater must be
opened to exhaust the air. This valve can be closed after the heater has been
filled fully with water.
Model
Rated
Voltage /
Frequency
(AC V / Hz)
IPX4
IPX4
75
75
0.8
0.8
230 /50
230 /50
2000
2000
15
25
AH15AH
AH25AH
Rated
Power
(W)
Volume
(L)
Rated
Pressure
(Mpa)
Water
Temperature
Max. (°C)
Protection
Class
Water
Proof
Class
0.507
0.618
Standing
Loss
in(KWH/24
Hrs/45°C)
3
3
Star
Rating
Technical Performance Parameters
I
I
The manual is applicable to the storage electric water heater Aqua Horizon. The technical specifications
are subject to change without any prior notice.
*Under standard test conditions, when tested in accordance with relevant standards. Actual electricity
consumption will depend on how the appliance is being used.
• The water heater is not intended for use by persons(including children)with
reduced physical, sensory or mental capabilities, or lack of experience and
knowledge, unless they have been given supervision or instructions concerning
use of the appliance by a person responsible for their safety. Children should be
supervised to ensure that they do not play with the heater.
• During heating, there may be drops of water dripping from the pressure release
hole of the multifunction valves. This is a normal phenomenon. If there is a large
amount of water leak, please contact customer care center for repair. This
pressure release hole shall, under no circumstances, be blocked; otherwise, the
heater may be damaged, even resulting in accidents.
• The drainage pipe connected to the pressure release hole must be kept sloping
downwards.
• Since the water temperature inside the heater can reach up to 75OC, the hot
water must not be exposed to human bodies when it is initially used. Adjust the
water temperature to a suitable temperature to avoid scalding.
• Unscrew the thread screw on the multifunction safety valve, and lift the drain
handle upwards. (See Fig.1) to drain the water from the inner tank.
• If the flexible power supply cord is damaged, the special supply cord provided
by the manufacturer must be selected, and replaced by the professional mainte-
nance personnel.
• If any parts and components of this electrical water heater are damaged please
contact customer care center for repair.
NOTE

7 8
Installation Instructions
Brief introduction of product structure
PRODUCT STRUCTURE FOR HORIZONTAL
C
A
B
D
NOTE
D represents the wall-mounted distance between holes of horizontal, E represents the
wall-mounted distance between holes of vertical.
Internal Wire Diagram
WIRING DIAGRAM FOR AQUA HORIZON
(Note:All dimensions are in mm)
A
B
C
D
AH15AH
310
563
180
210
AH25AH
310
807
180
310
E 200 200
E
L
Heating Element
Heating Indicator Light
Power Indicator Light
Thermal
Cut Out Thermostat
N
1. This electrical water heater shall be installed on a solid wall. If the strength of the
wall cannot bear the load equal to two times of the total weight of the heater filled
fully with water, it is then necessary to install a special support.
Incase of hollow bricks wall, ensure to fill it
2. After selecting a proper location, determine the positions of the two install holes
used for expansion bolts with hook (determined according to the specification of
the product you select). Make two holes in the wall with the corresponding depth
by using a chopping bit with the size matching the expansion bolts attached with
the machine, insert the screws, make the hook upwards, tighten the nuts to fix
firmly, and then hang the electric water heater on it (see Fig.2).
3. Install the supply socket in the wall. The requirements for the socket are as
follows:250V/10A, single phase, three electrodes. It is recommended to placed
the socket on the right above the heater. The height of the socket to the ground
shall not be less than 1.8m.
4. If the bathroom is too small, the heater can be installed at another place without
sun-scorched and rain-drenched. However, in order to reduce the pipeline heat
losses, the installation position of the heater shall be closed to the location shall
be as near as possible to the heater.
Pipelines Connection
1. The dimension of each pipe part is G1/2” ; The massive pressure of inlet should
use Pa as the unit; The minimum pressure of inlet should use Pa as the unit.
2. Connection of pressure relief valve with the heater on the inlet of the water
heater.
3. In order to avoid leakage when connecting the pipelines, the rubber seal gaskets
provided with the heater must be added at the end of the threads to ensure leak
proof joints (see Fig.3).

910
1. This electrical water heater shall be installed on a solid wall. If the strength of the
wall cannot bear the load equal to two times of the total weight of the heater filled
fully with water, it is then necessary to install a special support.
Incase of hollow bricks wall, ensure to fill it
(Fig.2)
Expansion bolt
(with hook)
PRODUCT STRUCTURE FOR HORIZONTAL (Fig.3)
Power cord
Adjusting handle for
mixing valve
Hot water outlet
Hot water
Cold water
Pressure relief valve
Pressure release hole
Cold water inlet
Please be sure to use the accessories provided by our company to install
this electric water heater. This electric water heater can not be hung on the
support until it has been confirmed to be firm and reliable. Otherwise, the
electric water heater may drop off from the wall, resulting in damage of the
heater, even serious accidents of injury. When determining the locations of
the bolt holes, it shall be ensured that there is a clearance not less than
0.2m on the right side of the electric heater, to convenient the maintenance
of the heater, if necessary.
NOTE
4. If the users want to realize a multi-way supply system, refer to the method
shown in fig.3 for connection of the pipelines.
2. After selecting a proper location, determine the positions of the two install holes
used for expansion bolts with hook (determined according to the specification of
the product you select). Make two holes in the wall with the corresponding depth
by using a chopping bit with the size matching the expansion bolts attached with
the machine, insert the screws, make the hook upwards, tighten the nuts to fix
firmly, and then hang the electric water heater on it (see Fig.2).
3. Install the supply socket in the wall. The requirements for the socket are as
follows:250V/10A, single phase, three electrodes. It is recommended to placed
the socket on the right above the heater. The height of the socket to the ground
shall not be less than 1.8m.
4. If the bathroom is too small, the heater can be installed at another place without
sun-scorched and rain-drenched. However, in order to reduce the pipeline heat
losses, the installation position of the heater shall be closed to the location shall
be as near as possible to the heater.
Pipelines Connection
1. The dimension of each pipe part is G1/2” ; The massive pressure of inlet should
use Pa as the unit; The minimum pressure of inlet should use Pa as the unit.
2. Connection of pressure relief valve with the heater on the inlet of the water
heater.
3. In order to avoid leakage when connecting the pipelines, the rubber seal gaskets
provided with the heater must be added at the end of the threads to ensure leak
proof joints (see Fig.3).

1. Check the power plug and outlet as often as possible. Secure electrical contact
and also proper grounding must be provided. The plug and outlet must not heat
excessively.
2. If the heater is not used for a long time, especially in regions with low air
temperature(below 0 Ċ), it is nessary to drain water from the heater to prevent
damage of the water heater, due to water freezing in the internal tank.(Refer
Cautions in this manual for the method to drain away the water from the inner
container).
3. To ensure long reliable water heater operation, it is recommended to regularly
clean the internal tank and remove deposits on the electric heating element of the
water heater, as well as check condition (fully decomposed or not) of the
magnesium anode and, if necessary, replace it with a new one in case of full
decomposition.Tank cleaning frequency depends on hardness of water located in
this territory. Cleaning must be performed by special maintenance services. You
can ask the seller for address of the nearest service center.
4. The water heater is equipped with a thermal switch, which cuts off power supply
of the heating element upon water overheating or its absence in the water heater.
If the water heater is connected to the mains, but water is not heated and the
indicator doesn’t light up, then the thermal switch was switched off or not switched
on. To reset the water heater to the operating condition, it is necessary to:
1. De-energize the water heater, remove the plate of the side/lower cover.
2. Press the button, located at the center of the thermal switch, see Fig.9;
3. If the button is not pressed and there is no clicking, then you should wait until
the thermal switch cools down to the initial temperature.
General Maintenance
11 12
First, open any one of the outlet valves at the outlet of the water heater, then, open
the inlet valve. The water heater gets filled with water. When water flows out of the
outlet pipe it implies that the heater has been filled fully with water, and the outlet
valve can be closed.
Operation Instructions
During normal operation, the inlet valve shall be always kept open.
NOTE
●
Insert the supply plug into the supply socket, the two indicator lights will light up this time.
The thermostat will automatically control the temperature. When the water tempera-
ture inside the heater has reached the set temperature, it will switch off automatically,
when the water temperature falls below the set point the heater will be turned on
automatically to restore the heating.
●
●
1. “ON/OFF indicator” light, plug in the power, switch is turned to the ON position,
the power indicator light will light ON reservation.
2. “Heating indicator ” light, when the water is heated to the set temperature. The
indicator light is off, the water heater will be in a state of insulation.
3. “Thermostat” knob, rotate the thermostat knob to set the temperature. Maximum
set temperature is 75 Ċ. Then the heating indicator light on
Operating Of The Unit
1
2
3
Do cut off power supply before maintenance, to avoid danger like electric shock.
WARNING
!
(Fig.9)
Manual reset button

Terms of Warranty
Maintenance & Cleaning:
1. To benefit from the highest standards of service and to ensure your guarantee
remains valid, always contact Usha Approved Dealer.
2. Always keep the inlet control valve open.
3. Never switch “ON” the water heater without water in the heater. It will damage
the heating element.
4. Check condition of metal flexible pipe at-least once in a year. If found damaged
replace with new pipes.
5. Check the condition of power supply cord for “No Damages”. Replace it by an
authentic supply cord in case of damage.
• Usha Storage Water Heater carries warranty of 2 Years (24 months) for all safety
device, 3 years on heating element and 8 years on tank.
• This warranty will be governed by the terms and conditions as mentioned below:
• Warranty shall be valid only for the period as specified above, irrespective of
whether the said product has been in use or not for any reason whatsoever OR the
product has been moved from one location to another. Please note that the product
must be returned to Usha’s authorized service centre on Freight paid basis for
repair / replacement during the period of warranty.
• Warranty period as specified above includes time taken for repair, replacements,
transit time, breakdowns etc. Usha reserves the right to retain any part or
component replaced at it’s discretion in the event of a defect noticed in the warranty
period.
• The warranty herein is in lieu of implied conditions and warranties under the law
and is confined to the repair / replacement of defective parts and doesn’t cover any
consequential or resulting liability, damage or loss arising from such defects.
Furthermore, in no case, shall there be return of Payment or return of the product
as a whole
• Parts of the product repaired or replaced under the terms of this warranty are
warranted only for the remaining period of the original warranty period.
• Surface coating, plastic / glass parts, Bakelite parts, rubber / nylon parts and
normal wear and tear of parts shall not be covered under this warranty. All such
parts shall be repaired / replaced on costs + taxes basis.
• Only authorized service centres of Usha shall repair the said product.
• It shall be the absolute discretion of the company to affect the repairs or replace-
ment of parts whether at the site of installation or at any authorized service centre.
• The customer is requested to preserve the original invoice for necessary verifica-
tion and produce the same, as and when required.
The warranty will be VOID in case of the following events:
• If the product is not used as per the instructions given in the User Manual
supplied with the product.
• If any repair work carried out by a person other than Usha’s Authorized Service
Centres.
• If any Spare Part used other than recommended Original Usha Spares.
• If any damage is caused by accident, mishandling, tampering with installation,
improper electric circuit outside the product or on account of incorrect power
supply other than required 230V AC, 50 Hz.
• If the serial no. of the product or any part thereof is deleted, defaced, damaged,
altered, obliterated or tampered with or removal for any reason whatsoever.
• If the product is used for commercial purpose(s).
• If the warranty Card is not completely filled and signed on the purchase of the
product.
• In case you find a problem with the performance of the product. Please visit
www.ushainternational.com for the list of our Authorized Service Centre OR call
our Toll Free no. 1800 1033 111 to get your complaints registered.
• The above warranty is applicable only in INDIA. Any disputes relating to the
above shall be subject to the Jurisdiction of Delhi, India only.
13 14
Troubleshooting
Failures Reasons Treatment
The heating indicator
light is off. Failures of the temperature controller. Contact with the professional personnel for repair.
No water coming out
of the hot water outlet.
The water temperature
is too high.
Water leak.
1. The running water supply
is cut off.
2. The hydraulic pressure is
too low.
3. The inlet valve of running
water is not open.
1. Wait for restoration of
running water supply.
2. Use the heater again when
the hydraulic pressure is
increased.
3. Open the inlet valve of
running water.
Failures of the temperature
control system.
Seal problem of the joint
of each pipe.
Contact with the professional
personnel for repair.
Seal up the joints.
NOTE
Parts illustrated in this use and care manual are indicative only, parts provided with the product may differ
with illustrations.This product is intended for household use only. Specifications are subject to change without
notice.
WARNING
!
Non-professionals are not allowed to disassemble the thermal switch to reset. Please contact Usha care
service centre to avail maintenance service for the same. Otherwise Usha will not be liable or take any
responsibility if any quality accident happens because of this.

15 16
• Usha Storage Water Heater carries warranty of 2 Years (24 months) for all safety
device, 3 years on heating element and 8 years on tank.
• This warranty will be governed by the terms and conditions as mentioned below:
• Warranty shall be valid only for the period as specified above, irrespective of
whether the said product has been in use or not for any reason whatsoever OR the
product has been moved from one location to another. Please note that the product
must be returned to Usha’s authorized service centre on Freight paid basis for
repair / replacement during the period of warranty.
• Warranty period as specified above includes time taken for repair, replacements,
transit time, breakdowns etc. Usha reserves the right to retain any part or
component replaced at it’s discretion in the event of a defect noticed in the warranty
period.
• The warranty herein is in lieu of implied conditions and warranties under the law
and is confined to the repair / replacement of defective parts and doesn’t cover any
consequential or resulting liability, damage or loss arising from such defects.
Furthermore, in no case, shall there be return of Payment or return of the product
as a whole
• Parts of the product repaired or replaced under the terms of this warranty are
warranted only for the remaining period of the original warranty period.
• Surface coating, plastic / glass parts, Bakelite parts, rubber / nylon parts and
normal wear and tear of parts shall not be covered under this warranty. All such
parts shall be repaired / replaced on costs + taxes basis.
• Only authorized service centres of Usha shall repair the said product.
• It shall be the absolute discretion of the company to affect the repairs or replace-
ment of parts whether at the site of installation or at any authorized service centre.
• The customer is requested to preserve the original invoice for necessary verifica-
tion and produce the same, as and when required.
The warranty will be VOID in case of the following events:
• If the product is not used as per the instructions given in the User Manual
supplied with the product.
• If any repair work carried out by a person other than Usha’s Authorized Service
Centres.
• If any Spare Part used other than recommended Original Usha Spares.
• If any damage is caused by accident, mishandling, tampering with installation,
improper electric circuit outside the product or on account of incorrect power
supply other than required 230V AC, 50 Hz.
• If the serial no. of the product or any part thereof is deleted, defaced, damaged,
altered, obliterated or tampered with or removal for any reason whatsoever.
• If the product is used for commercial purpose(s).
• If the warranty Card is not completely filled and signed on the purchase of the
product.
• In case you find a problem with the performance of the product. Please visit
www.ushainternational.com for the list of our Authorized Service Centre OR call
our Toll Free no. 1800 1033 111 to get your complaints registered.
• The above warranty is applicable only in INDIA. Any disputes relating to the
above shall be subject to the Jurisdiction of Delhi, India only.
Warranty Card
This Storage Water Heater is warranted for two years against all manufacturing
defects from the date of sale. In the event of any complaint, please contact your
nearest Company Service Centre or call at our Toll Free no: 1800-1033-111
This Warranty is valid only when:
1. The Storage Water Heater has not been opened or tampered with, by any
unauthorized person.
2. The warranty card or cash memo duly signed by the authorized dealer are
presented with the complaint.
3. The Storage Water Heater has been installed, used and maintained in
accordance with the instruction manual.
This Warranty does not apply for:
1. Damages due to chipping, peeling, plating and denting.
2. Breakage or damage to components made out of Bakelite, Urea, ABS, SAN and
such plastic, materials, rubber parts and cord.
3. Normal wear and tear of parts.
4. Damage resulting from accidents, mishandling or negligence on part of the
customer. Liability for consequential loss or damage is neither accepted nor
implied.