Havells Bueno User manual

Bueno Storage Electric Water Heater

1. Thermostat with adjustable temperature knob
2. Indicator lamp
3. Cold water inlet (blue)
4. Hot water outlet (red)
5. Multi functional safety valve
6. Outer plastic body
7. Inner tank
8. Power cord with ELCB
9. Energy saving high density PUF insulation
10. Inspection cover
11. Temperature indicator
Dear Customer,
We congratulate you on choosing a HAVELLS Electric Water Heater, one of
the highly prestigious brand in India.
Meticulously designed, using only the highest quality materials and
components, your electric water heater is designed to have many years of
trouble free service.
To enable your electric water heater to give you many years of perfect trouble
free service, we recommend you to follow the instructions of the service
manual carefully.
6
7
9
Parts List : Bueno

Warning
The installer should review the contents of this manual along with the owner after completion
of installation and the manual should be left with the owner and placed at a place close to the
installation.
Production Dimensions :
Bueno
All figs. in mm
Bueno 6
Bueno 10
Model
Technical Specifications : Bueno
106
30%
20
230V, 1Ph 50 Hz A.C.
2500
11
0.8
0.371
30
5.4
11.4 17.2
1.
2.
3.
4.
5.
6.
7.
8.
9.
11.
Rated Capacity in Litre
Mounting
Rated Voltage in Volts &
frequency in Hz.
Rated Power Input in Watts
Rated Input Current in Amps
Mean Hot Water Output
Temp. (°C)
Rated Pressure in MPa
Standing Loss in KWH/24
hrs/45° C
Initial heating in Mins. (Max.)
Weight of water
heater in Kg.
Empty
Water Filled
Reheating Time in Mins. to
0
raise 50 C (Min.)
Mixing Factor Maximum (%)10.
S.No. PARAMETER Bueno 10Bueno 6
Vertical Vertical
230V, 1Ph 50 Hz A.C.
2000
8.7
70 70
0.8
0.423
65
35
30%
7.2
IP X 4
Class I
12.
13.
Water Proof Degree
Class of Appliance
IP X 4
Class I

8. Adjustable Temp. Knob with Thermostat :
Allows a manual setting for heating of water between ambient temperature to 75°C.
7. Multifunctional 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
2. Anti Alkaline Test
Vitreous
Enamel Coating
2. Heavy Duty Anode Rod Protects Tank From Corrosion :
With steel core, magnesium anode rod protects enamelled tank from rust and corrosion.
1.
10. Ensure high level of protection to electrical parts from water splashing.
Protection against
water splashing
from every direction
Vitreous Enamel Coated Tank with single Weld Line Design:
A. Made of Ultra thick super cold rolled steel plates 2 mm thick
B. Provides more corrosion resistance and anti-rust property compared to standard inner tank
designs resulting in longer life
C. Single weld line on the inner tank eliminates the risk of water leakage
D. A die-hard life span for inner tank and more than 25% strength than S.S. tank, ensured by
multiple on line testing including
1. Uric Acid Test
3. Fatigue Test
4. Environment Synchronization Test
4. Energy Saving High Density Puf Insultation :
CFC free thicker PUF insulation offers complete protection against radiant heat loss.
Water Tubes with Whirl Flow :
heating and maximum energy saving effect.
5.
6. Thermal Cutout :
Cuts off electric power to guarantee safety, in case the water temp. exceeds the highest temp.
beyond pre-set of the thermostat.
Safety Devices :
B. Thermal Cutout
A non-self resetting thermal cutout is provided as a safety device. When the thermostat fails to function, this cut-off the
at 90°C.
power
The thermal cutout has to be manually reset before the heater can start operating again.
C. Earth Leakage Circuit Breaker (ELCB)
This Water heater is equipped with an earth leakage circuit breaker(ELCB) which will cut-off the power immediately in case of
any current leakage. This will ensure protection against electric shock in case of current leakage. In order to ensure that the
ELCB is working normally, press the `Testing’ button on the device. If ELCB cuts off the power to the heater, it means that it is
working properly. After testing, please press reset button to restore normal functioning of the heater. It is advisable to periodically
repeat this test to verify the functioning of the ELCB.
Havells Water Heater is built-in with a host of Safety Devices to ensure your safety at all times. The operation of these devices are
described below :
A. Thermostat
Capillary type thermostat: This device “cut-off” and “cut-in” the power supply between a narrow band of temperature range.
of theThe indicator lamp provided with this circuit glow and un-glow during cut-in and cut-off. This shows the proper working
thermostat. This device is provided with an adjustable knob to set the desired water temperature.
Key Features :
9. 4 Bolt Flange :
Provides an easier way for product maintenance.
4
3. Electric Current Leakage Protection Device
ELCB

Mounting
Now the water heater can be hooked on the wall bracket.
1. After hooking on bracket, tug downward the water heater and ensure both fingers of bracket are properly seated in the mounting
slot.
CAUTION
Do not connect the inlet directly to water lifting pump.A.
Do Not SWITCH ON water Heater without water filled in tank.B.
1. In case inlet water pressure is more than 5.5MPa or water pressure head 80 meter, install the dead weight valve before
shown in Picture 2 (not provided with this unit).
2. Minimum height between the water heater and water supply tank should be at least 4 meter.
3. For connecting the inlet & outlet between water heater and bathroom fittings, use metal flexible pipes.
4. Cold water inlet is marked blue and hot water outlet is marked with red.
5. First, fix the multifunction valve (MFV) to inlet of water heater.
6. Connect cold water inlet to other end of MFV with metal flexible pipe.
7. Open inlet water tap and allow the water to fill in the water heater. Make sure that the water starts flowing from outlet of
water heater.
8. Connect the outlet with metal flexible pipe to hot water outlet point of bath fitting. Open the tap & valve and check the water flow
through the hot water tap
9. Connect MFV with PVC pipe for drain see Picture 3.
inlet as
Water Connections
Ensure no leakage of water through inlet and outlet joints.
Installation :
Always use services of qualified plumber/electrician to install this unit.A.
For easy installation and servicing enough space should be provided around this unit (50mm from ceiling,
minimum 1.8 m from ground).
500mm from sides &
B.
Ensure following tools and accessories are made available before installation of this unit. (not provided by company)
C.
1. Drilling machine with concrete drill bit, set spanner and tool kit.
2. Two numbers of metal flexible pipes.
3. PVC pipe for drain
Preparation of Wall Structure
For installation of this unit, you need to prepare the wall suitably.
A. In case of hollow brick walls.
1. Dig up sufficient space to accommodate the wall mounting bracket (bracket supplied with water heater) of
100mm.
2. Fill up the complete dig up space with cement concrete.
3. Ensure cement concrete is properly cured/set.
4. Then, the wall bracket can be fixed with the help of bolts provided along with the unit.
minimum depth
B. In case of solid walls
Follow process as below :
1. Drill hole in wall as shown Picture 1.
2. Insert the nut/bolt assembly in drilled hole, take out the bolt (as shown)
Picture 1.
3. Fix the wall plate with the bolt and washer by testing testing till the wall
plate is firmly fixed, in order to carry the weight of water heater safely
(with water).
1. This valve prevents the built-up of excessive pressure within the water heater by releasing water from the
2. It also acts as a non-return valve to avoid the return of water from the water heater back to supply, thereby prevent the dry
heating.
3. It acts as an expansion valve to allow the hot water expansion during heating which flows back through drain.
drain.
4. Customer can ensure proper working of the MFV by cleaning of salt deposits, by lifting the drain lever up.
out the water from tank in case of prolonged non-use of water heater.
Customer can drain
D. Multi Function Valve (MFV)
CAUTION
Dead Weight Valve
Picture 2
To water Inlet
To Flexible Pipe
Picture 3
Lever for drain out of
water at annual
maintenance
Multi functional Safety Valve
Electrical Connections
1. This unit is provided with all internal connections/wiring made in the factory itself.
2. The water heater is provided with a supply cord, with an in-built ELCB and a 3 pin plug top of 15 Amp.
3. Make sure that the electrical contact of 3-pins plug and switch is secure with proper earthing
4. To energize water heater plug in the 3-pin in socket for electric supply.
Internal Wiring Diagram -
The schematic diagram shows the internal wiring.
Make sure that the Water Heater is switched off and plugged-off from electrical supply before opening the Inspection cover.
Follow the Internal wiring connections as shown in the diagram below while carrying out the maintenance.
A. Hollow brick walls. B. Solid walls.

For cleaning the element or replacing the anode use the following procedure :
1. Switch off the electric supply to the water heater.
2. Open the hot water taps until the hot water is removed completely.
3. Close cold water supply.
4. Drain the cold water from tank through MFV drain pipe by lifting the drain lever. Remove flexible pipe.
5. Remove the water heater from the hanger hook, after water heater is emptied
6. Remove the inspection cover from bottom , unscrew the heating assembly flange.
7. Clean the container and the heating element assembly to remove scale formation, by using a suitable acid or by gently
scraping the scale. Check the heating element surface after cleaning for “No Surface Damage”
8. Replace Magnesium anode in case it is worn out.
9. Remount the heating assembly flange. Ensure the Internal wiring connection are made as per the wiring diagram shown
in the manual.
10. Hang the water heater on the mounting bracket/ hook provided on the wall. Move the water heater down-
ward to ensure that it is seated on bracket properly.
11. Open cold water supply until water flows without interruption from outlet valve.
12. Close the outlet valve and check for “No eventual leakage” around the flange and water connections.
13. When there is no leakage, then switch on electric supply.
DO’S
1. The gate valve at the inlet should always be kept open.
2. To minimize scaling of heating element & the tank, (which takes place rapidly in areas of hard water), drain the water from
heater unit periodically. However get this done through a qualified technician /plumber only
3. Always get the water heater serviced once in a year from a Havells authorized service representative
4. Use genuine spares when spares replacement is necessary.
5. Switch OFF the power supply to the unit & drain out the water when not in use for a longer period of time. This prevents
scaling of the element.
6. In case both the lamps do not glow, do not start the unit by resetting the thermal cutout. Instead contact the nearest
customer care centre.
DON’TS
1. Safety devices like safety valve, thermostat, thermal cut-out etc are pre-set from factory & sensitive devices. Do not
tamper with them, this could be hazardous.
2. Do not switch ON the heater till it is completely filled with water.
3. In case you observe any abnormality of operation, immediately switch OFF the main power supply to the unit and contact
the nearest customer care centre.
4. Never install a pressure reducer valve at the inlet.
Operation Of Water Heater :
A. Using the heater for the first time :
1. Do not switch “ON” before filling the heater with water.
2. Leave the hot water tap open. Now fill the heater by opening the control valve at the inlet.
3. When the heater is full, water will start flowing through the hot water tap. Close the hot water tap.
4. Now the heater will always have water inside. Water drawn will be replaced by water from the over head tank.
5. Always keep the inlet control valve open.
6. Now switch “ON” the power supply to the heater.
B. Using the heater regularly :
1. Always keep the inlet valve open so that water drawn from the hot water tap is automatically replaced from the mains.
2. When the water reaches the required temperature the thermostat will cut-off the power supply automatically.
3. The thermostat setting can be changed by the user to suit outlet water temperature. (DO NOT TAMPER THE SETTING
FREQUENTLY)
4. Lowering the setting of the thermostat will give a lower hot water temperature; increasing the setting will give a higher hot
water temperature.
5. Initially it may take a long time for the water to get hot, it is recommended to switch “ON” the water heater at least an hour
before you want to use it.
6. If you require hot water early in the morning, switch “ON” previous night itself, thermostat would cut-off the power
automatically, when the water reaches the set temperature.
7. The heater can also be kept “ON” always, if required since the heater is completely insulated, the water will remain hot.
The thermostat will cut-in and cut-off automatically to keep the water at constant temperature. In this way you can always
get hot water.
Maintenance & Cleaning :
1. To benefit from the highest standards of service and to ensure your guarantee remains in focus, please always contact
HAVELLS approved dealer or HAVELLS Authorised Franchise.
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.
6. If the water heater is not going to be used for a long time,
a. Plug Off the power supply,
b. Stop Inlet water supply
c. Unscrew the drain lever, lift the lever upward to remove the water through drain system provided in MFV.
8. During reuse of water heater
a. Ensure Drain Plug lever is reset and screwed
b. Open Inlet Valve and fill the water heater till the clean water flows from outlet tap.
c. Plug-in the power supply to heat the water
9. Periodically check the MFV to ensure that it is in operating condition. The MFV should be operated regularly to remove salt
deposits and to verify that it is not blocked.
10. Check proper functioning of the safety valve in every two months by opening and closing the test lever.
11. The heating element should be checked every year for “No Scale Formation” caused by impurities in the water supply.
12. We recommend to check Magnesium anode rode in every year & once it has been used up over 60%, the Magnesium
anode should be replaced with a new one.
Internal Wiring Diagram : Bueno
7. To increase the life of heating element, de-scaling should be done periodically. if required, you may take the
assistance of the nearest authorized service center