Beretta IDRA N DS 1500 User manual

Installation and Operation Manual
Solar | solar storage cylinder
IDRA N DS
Installation and Operation Manual
EN

2

This manual, Code Doc-0071222 - Rev. 3 (07/17) comprises 20 pages.
3
Dear heating engineer,
We would like to congratulate you on having recommended a Bsolar storage cylinder unit: a modern product that's
capable of ensuring a high degree of reliability, efciency, quality and safety.
While your technical skills and knowledge will certainly be more than sufcient, this booklet contains all the information
that we have deemed necessary for the device's correct and easy installation.
Thank you again, and keep up the good work,
Beretta
CONFORMITY
Bstorage cylinders conform to DIN 4753-3/UNI and UNI EN 10025 standards.
RANGE
MODEL CODE
IDRA N DS 1500 20136241
IDRA N DS 2000 20136242
IDRA N DS 2600 20086803
ACCESSORIES
For a complete list of accessories and details of their compatibility, refer to the Catalogue.
CONTENTS
The following symbols are used in this manual:
b
CAUTION! = Identies actions that require caution
and adequate preparation.
a
STOP! = Identies actions that you MUST NOT do.
Thismanual,Code
-Rev.
comprises
pages.
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1 General Safety Information . . . . . . . . . . . . . . . . . 4
2 Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Description of the appliance . . . . . . . . . . . . . . . . 5
4 Identication . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
5 System layout. . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
6 Technical specications . . . . . . . . . . . . . . . . . . . 6
7 Location of sensors . . . . . . . . . . . . . . . . . . . . . . . 7
8 Overall dimensions and water ttings . . . . . . . . . 8
INSTALLER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
9 Unpacking the product . . . . . . . . . . . . . . . . . . . . 9
10 Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
11 Installing the magnesium anodes . . . . . . . . . . . 11
12 Fitting the insulation . . . . . . . . . . . . . . . . . . . . . . 12
13 Place of installation . . . . . . . . . . . . . . . . . . . . . . 13
14 Installation in older systems and systems
requiring modernisation. . . . . . . . . . . . . . . . . . . 13
TECHNICAL ASSISTANCE CENTRE . . . . . . . . . . . . 14
15 Putting into service . . . . . . . . . . . . . . . . . . . . . . 14
16 Temporary shutdown . . . . . . . . . . . . . . . . . . . . . 14
17 Preparing for extended periods of disuse . . . . . 14
18 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
19 Cleaning and removing internal components . . 15
20 Recycling and disposal . . . . . . . . . . . . . . . . . . . 16
21 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . 16
END USER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
22 Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
23 Temporary shutdown . . . . . . . . . . . . . . . . . . . . . 17
24 Preparing for extended periods of disuse . . . . . 17
25 External maintenance . . . . . . . . . . . . . . . . . . . . 17

4
GENERAL
1 GENERAL SAFETY INFORMATION
b
Check that the product is complete, undamaged and
as ordered as soon as you receive it. Report any dis-
crepancies or damage to the Bdealer who sold it.
b
This product must be installed by a legally qualied
heating engineer. On completion of the installation,
the installer must issue the owner with a declaration
of conformity conrming that the installation has been
completed to the highest standards in compliance with
the instructions provided by Bin this instruction
manual, and that it conforms to all applicable laws and
standards.
b
This product must only be used for the purpose for
which it is designed and made, as specied by B.
Bdeclines all responsibility, contractual or other,
for damage to property or injury to persons or animals
caused by improper installation, adjustment, mainte-
nance or use.
b
The product must be serviced at least once a year.
Servicing must be arranged in advance with the B
Technical Assistance Centre.
b
All servicing and repairs must be performed by a quali-
ed heating engineer.
b
If water leaks from the storage cylinder, turn off the wa-
ter supply and contact B’s Technical Assistance
Centre or a qualied heating engineer immediately.
b
If the product is not going to be used for an extended
period of time, contact the manufacturer’s Technical
Assistance Centre to have at least the following oper-
ations performed:
- Close the shut-off cocks for the domestic hot water
circuit
- Shut down the boiler connected to the storage cylin-
der as instructed in its own manual
- Switch the storage cylinder OFF at the control panel (if
tted) and at the mains power switch
- Drain the central heating circuit and domestic hot wa-
ter circuit if there is any risk of freezing.
b
This instruction manual is an integral part of the prod-
uct. It must be kept safe and must ALWAYS accom-
pany the product, even if it is sold to another owner or
transferred to another user or to another installation. If
you lose this manual, order a replacement immediately.
Keep the product purchase documents to be present-
ed to the Bauthorised Technical Assistance Centre
to request a service call under warranty.
b
Size the solar expansion tank so as to ensure complete
absorption of the expansion of the uid contained within
the system, with reference to the prevailing regulations
on the matter. In particular, consider uid character-
istics, considerable uctuation of service temperature
and vapour that might be generated during solar col-
lector stagnation stage. Proper size of expansion tank
ensures setting off of all volume changes of the heat
transfer uid, avoiding excessive pressure increase.
Limited pressure changes avoid reaching safety valve
opening pressure and the consequent uid drainage.
2 PRECAUTIONS
The operation of any appliance that uses electrical power
demands that a number of fundamental safety precautions
be respected. In particular:
a
Never attempt to install the system without using suit-
able personal protection equipment and without fol-
lowing all applicable occupational safety standards.
a
Do not touch the product when barefoot or wet if it
has any electrical accessories installed in it.
a
Never clean or service the storage cylinder without
rst turning the mains power switch OFF to discon-
nect all electrical accessories (if tted) from the mains
electricity supply.
a
Never pull, disconnect, or twist any electrical cables
coming from the appliance even if it is disconnected
from the mains electricity supply.
a
Do not expose the storage cylinder to the elements. It
is not designed for use outdoors.
a
If solar plant pressure decreases, it is forbidden to
top up with only water as there is a danger of freezing
and overheating.
a
Do not use connections or safety devices or ttings
(expansion vessels, pipes, insulation) that are not
specically designed and tested for use in solar wa-
ter heating systems.
a
Do not allow children or inrm persons to operate the
system unsupervised.
a
Do not dispose of packaging material into the envi-
ronment, or leave it within the reach of children, since
it can become a potential hazard. Dispose of packag-
ing material in compliance with applicable legislation.
General

GENERAL
5
3 DESCRIPTION OF THE
APPLIANCE
B IDRA N DS solar storage cylinders are double coil
units designed for installation in domestic hot water pro-
duction systems heated by solar collectors. They come in
capacities 1500, 2000 and 2600.
The most important technical features of these solar stor-
age cylinders are:
- The cylinder and coils are specially designed and
shaped for optimum performance in terms of strati-
cation, heat exchange and replenishment times
- vitried cylinder lining, bacteriologically inert for max-
imum hygiene of the water, reduced lime scale de-
posits and easy cleaning
- CFC-free polyurethane insulation and an elegant ex-
ternal casing reduce heat loss
- Water ttings are available at different heights, per-
mitting different hot water generators to be used with-
out reducing the stratication effect
- a ange for easy cleaning and maintenance of the
anti-corrosion magnesium anode.
B IDRA N DS storage cylinders can be connected to a
special solar regulator and can be integrated in solar heat-
ing systems in which Bboilers or water heaters provide
supplementary heat.
4 IDENTIFICATION
The B IDRA N DS solar heaters can be identied by:
Data plate
This lists the technical specications and performance
of the product.
20052790K4LH3800001
Model: IDRA N DS 1500
Code: 20052790
Serial Number: K4LH3800001
Beretta Caldaie
Via Risorgimento, 13
23900 Lecco (LC) - Italy
Capacità nom. sanitaria 1449 L
1.8 mq.
3.4 mq.
1200 L/h
2200 L/h88 kW
47 kW
10.4 L
19.4 L
45 NL
– L
99 °C
330 kg
2280 mm
PS 8 bar
PS
– barPS
6 bar
6 barPS
Capacità nom. riscaldamento
Materiale costruzione DD12/S235JR
SMALGLASS
Trattamento
Scambiatore superiore
Coefficiente di resa
Scambiatore inferiore
Potenza serpentino inf. (DIN 4708)
Potenza serpentino sup. (DIN 4708)
Temperatura d’esercizio max
Anodo n° Misure ØxLg. mm32 700/700
Ingombro per raddrizzamento
Peso a vuoto
Il clima di casa
b
If these plates or any other means of clearly iden-
tifying the product are defaced, removed or lost,
proper installation and servicing may be rendered
difcult.
5 SYSTEM LAYOUT
1
4
11
2
12
13
9
3
8
6
10
7
5
EAF
UAC
MC
RC
RL
M
R
SB
1 First magnesium anode
2 Boiler temperature sensor socket
3 Top coil
4 Auxiliary temperature sensor socket (for models 1500)
5 Auxiliary temperature sensor socket (for models 2000
- 2600)
6 Cylinder body
7 Sleeve for electric heating element (not supplied)
8 Insulation
9 Bottom coil
10 Second magnesium anode
11 Solar controller temperature sensor socket
12 Flange cover
13 Cylinder inspection ange
UAC Domestic hot water outlet
MC Outlet from boiler
RC Return to boiler
M Solar circuit outlet
R Solar circuit return
RL DHW circulation
EAF Domestic cold water inlet
SB Storage cylinder drain

GENERAL
6
6 TECHNICAL SPECIFICATIONS
DESCRIPTION
IDRA N DS
1500 2000 2600
Type of storage cylinder Vitried
Storage cylinder layout Vertical
Heat exchanger layout Vertical
Storage cylinder capacity 1390 1950 2572 l
Useful non-solar volume (Vbu) 525 800 1000 l
Diameter with insulation 1200 1300 1450 mm
Diameter of storage cylinder without insulation 1000 1100 1250 mm
Height without insulation 2120 2370 - mm
Height with insulation 2185 2470 2455 mm
Insulation thickness 100 100 100 mm
Total net weight 325 540 600 kg
First magnesium anode (Ø x length) 32x700 mm
Second magnesium anode (Ø x length) 32x400 32x700 mm
Flange diameter (external/internal) 290/220 mm
Diameter/length of sensor socket 8/200 8/- mm
Sleeve for electric heating element (**) 1" 1/2
Coil water capacity 19,4 28,1 28,4 L
Coil heat exchange surface area 3,4 4,6 4,6 m2
Power absorbed by coil (*) 88 120 110 kW
Domestic hot water production (*) 2200 2900 4700 l/h
Flow required at coil (*) 3,8 5,2 5,9 m3/h
Top coil water capacity 10,4 16,9 20,3 l
Top coil heat exchange surface area 1,8 2,8 3,3 m2
Power absorbed by top coil (*) 47 73 79 kW
Hot water production – top coil (*) 1200 1800 3400 l/h
Flow required at top coil (*) 2 3,1 4,3 m3/h
Maximum operating pressure 8 bar
Maximum operating temperature 99 °C
Discharges according to EN 12897:2006
(∆T=45 °C, ambient 20°C and storage at 65°C)
162 186 - W
3,89 4,46 - kWh/24h
Insulation type Soft PU shells
Maximum operating pressure of coil 10 6 bar
Maximum working temperature of coil 110 - °C
NL performance factor 55 84 -
(*) In accordance with DIN 4708 with a ΔT of 20°C (80°/60°C) at the coil.
(**) Electrical heating element (not supplied).

GENERAL
7
Pressure drops
TOP COIL
PRESSURE DROP (mbar)
600
500
400
300
200
100
0
0 1000 2000 3000 5000 60004000
1500
2600
2000
FLOW RATE (l/h)
Pressure drops
BOTTOM COIL
PRESSURE DROP (mbar)
1000
900
800
600
400
100
200
300
500
700
0
0 1000 2000 3000 5000 60004000
2600
1500
2000
FLOW RATE (l/h)
7 LOCATION OF SENSORS
B IDRA N DS storage cylinders are equipped with ded-
icated sockets for the storage cylinder TEMPERATURE
GAUGE or TEMPERATURE SENSOR.
b
The installer is responsible for making all necessary
connections to the boiler and solar collectors. Install-
ers must use their expertise to ensure proper installa-
tion and functioning in compliance with all applicable
legislation.
b
In case of a probe, any electric junction between
probe cable and extensions for the connection to the
electric panel must be soldered and protected with a
sheath or a suitable electric insulation.

GENERAL
8
8 OVERALL DIMENSIONS AND WATER FITTINGS
B IDRA N DS storage cylinders can also be connected to previously installed hot water sources provided heat output
is suitable and care is taken to ensure correct water ow directions.
EAF
R
UAC
RC
RL
M
MC
SB
RE
G
H
I
M
N
D
E
C
B
A
AD1
AD2
TR
Psc1
Psr
F
L
O
Psc2
P
DESCRIPTION
IDRA N DS
1500 2000 2600
UAC Domestic hot water outlet 1 1/2” F Ø
MC Outlet from boiler 1"1/4 F Ø
RC Return to boiler 1"1/4 F Ø
M Outlet from solar collector 1"1/4 F Ø
R Return to solar collector 1"1/4 F Ø
RL DHW recirculation 1" F Ø
EAF (SB) Domestic cold water inlet (storage cylinder drain) 1 1/2” F 1"1/4 F Ø
Psc1 Diameter/length of boiler sensor socket 8/200 - - mm
Psc2 Diameter/length of boiler sensor socket - 8/200 mm
Psr Diameter/length of solar controller sensor socket 8/200 mm
RE Sleeve for electric heating element (not supplied) 1 1/2” F Ø
AD1 Diameter/length of rst magnesium anode 32/700 Ø/mm
AD2 Diameter/length of second magnesium anode 32/400 32/700 Ø/mm
TR Temperature gauge 1/2" F Ø
A 1230 1340 1310 mm
B - 1487 1455 mm
C 1775 2000 1950 mm
D 280 250 235 mm
E 415 400 430 mm
F 525 662 655 mm
G 1125 1205 1085 mm
H 1225 1315 1255 mm
I 1325 1425 1425 mm
L 1420 - - mm
M1730 1870 1845 mm
N 1890 1990 1950 mm
O2120 2045 2455 mm
P 1200 1300 1450 mm
b
We recommend that you install isolating valves in the outlet and return lines.
b
Check the efciency of the seals when lling/relling the storage cylinder.

9
INSTALLER
9 UNPACKING THE PRODUCT
MODELS IDRA N DS 1500
B IDRA N DS storage cylinders are delivered in a single
package, protected by a plastic bag inside a protective
foam rubber wrapping and supported by a wooden pallet.
The following items are delivered in a plastic bag inside the
packaging:
- Instruction manual
- Bar code label
- Hydraulic test certicate
The two magnesium anodes are supplied in a cardboard
box on the pallet.
A
B
H
IDRA N DS A (mm) B (mm) H (mm) Weight
(kg)
1500 1000 1000 2325 340
b
The instruction manual is an integral part of the so-
lar storage cylinder. Once located, read it thoroughly
and keep it safe.
MODELS
IDRA N DS 2000
B IDRA N DS storage cylinders come in two separate
packages:
- The rst contains the painted cylinder, protected by a
plastic bag and supported on a wooden pallet.
- The second package, also protected by a plastic
bag, contains the polyurethane insulation with its el-
egant outer covering, tting insulation sleeves, top
cover, ange cover, identication plates and docu-
mentation.
The following items are delivered in a plastic bag inside the
packaging:
- Instruction manual
- Bar code labels
- Hydraulic test certicate
The two magnesium anodes are supplied in a cardboard
box on the pallet.
A
B
H
IDRA N DS A (mm) B (mm) H (mm) Weight
(kg)
2000 1700 1900 2000 565
b
The instruction manual is an integral part of the so-
lar storage cylinder. Once located, read it thoroughly
and keep it safe.
Installer

INSTALLER
10
MODELS IDRA N DS 2600
B IDRA N DS storage cylinders come in two separate
packages:
- The rst contains the painted cylinder, protected by
a plastic bag and arranged vertically on a wooden
pallet.
- The second package, supplied separately and also
protected by a plastic bag, contains the polyurethane
insulation with its elegant outer covering, tting insu-
lation sleeves, top cover, ange cover, identication
plates and documentation.
The following items are delivered in a plastic bag inside the
packaging:
- Instruction manual
- Bar code labels
- Hydraulic test certicate
The two magnesium anodes are supplied in a cardboard
box on the pallet.
Vertical
A
B
H
IDRA N DS A (mm) B (mm) H (mm) Weight
(kg)
2600 1300 1300 2525 620
b
The instruction manual is an integral part of the so-
lar storage cylinder. Once located, read it thoroughly
and keep it safe.
10 HANDLING
b
Wear suitable personal protective equipment and
use suitable safety devices.
b
Make sure that any lifting equipment is of adequate
capacity to lift and move the storage cylinder.
a
Do not dispose of packaging material into the envi-
ronment, or leave it within the reach of children, since
it can become a potential hazard. Dispose of packag-
ing material in compliance with applicable legislation.
MODELS
IDRA N DS 1500
Cut the strap (1) located under the insulation at the zips to
remove the cylinder from the pallet.
1
1
If suitable equipment is not on hand to lift the storage cyl-
inder off the pallet using the eyebolt, proceed as follows.
- Place a platform of about half the height of the pallet
near the storage cylinder. Make sure the platform is
able to support the weight of the storage cylinder
- Remove the strap (1) then carefully rotate and slide
the storage cylinder off the pallet on to the platform
- Make sure that the storage cylinder is perfectly sta-
ble, and then remove the pallet
- Carefully rotate and slide the storage cylinder off the
platform on to the oor
- Remove the platform. Position the storage cylinder as
required.

INSTALLER
11
MODELS IDRA N DS 2000
To remove the storage cylinder from the pallet, rst remove
the insulation then secure lifting cables to the lifting points
on the top of the cylinder, and lift with care.
MODELS IDRA N DS 2600
Proceed as follows to remove the storage cylinder from the
pallet:
- cut the straps
- secure the lifting cables to the lifting points on the top
of the storage cylinder
- carefully lift the storage cylinder and position it as re-
quired
11 INSTALLING THE MAGNESIUM
ANODES
Proceed as follows to install the magnesium anodes:
- Remove the protective plugs
- Fit the two magnesium anodes in the ttings (1) and
(2)
- Screw in the magnesium anodes using a suitable
spanner.
1
2
2
NOTE: Tighten to a torque of 25 Nm.

INSTALLER
12
12 FITTING THE INSULATION
MODELS IDRA N DS 2000 to 2600
Once the storage cylinder is correctly positioned inside the
room where it is to be installed, proceed to t the insulation
and the accessories to complete the cylinder.
Proceed as follows:
- Unpack all the material from the second package
- Wrap the insulation (3) around the storage cylinder,
carefully lining up the ttings with the holes on the
inside of the insulation. Secure the insulation in place
with the zips (4) at the edges of the two sections
3
3
4
4
41
2
- Perforate the insulation at the ttings and t the insu-
lation sleeves (5)
- Fit the ange cover (6)
- Finally, t the insulation top panel (7) and cover it with
the thermoformed cover (8).
5
7
8
6

INSTALLER
13
13 PLACE OF INSTALLATION
B IDRA N DS storage cylinders can be installed in any
room where there is no specic requirement for an electri-
cal protection rating higher than IP X0D.
≥ 0,4 m
≥ 0,6 m
≥ 0,3 m ≥ 0,4 m
b
Specied minimum distances must be respected,
and the space in which the storage cylinder is to be
installed must be easily accessible in order to per-
mit easy installation and assembly and subsequent
inspection, maintenance and repair. In particular,
access must permit the storage cylinder to be re-
moved without disassembly at the end of its useful
life, and another unit to be installed in its place. Users
are therefore responsible for any costs incurred to
demolish masonry or other structures preventing or
impeding free access to the space where the storage
cylinder is to be installed.
14 INSTALLATION IN OLDER
SYSTEMS AND SYSTEMS
REQUIRING MODERNISATION
When installing B IDRA N DS storage cylinders in old
systems or systems requiring modernisation, always per-
form the following checks.
- Make sure that the system is tted with safety and
control devices in accordance with applicable legis-
lation and standards
- Make sure that the central heating circuit has been
ushed out to remove all sludge and lime scale, and
has been vented and seal tested
- Make sure that a suitable water treatment system is
installed if the quality of the supply/recirculation water
so demands (refer to the reference values listed in
the table alongside).
REFERENCE VALUES
pH 6-8
Electrical conductivity less than 200 μS/cm (25°C)
Chlorine ions less than 50 ppm
Sulphuric acid ions less than 50 ppm
Total iron less than 0.3 ppm
Alkalinity M less than 50 ppm
Total hardness less than 35°F
Sulphur ions none
Ammonia ions none
Silicon ions less than 30 ppm

14
TECHNICAL ASSISTANCE CENTRE
15 PUTTING INTO SERVICE
It is essential to perform the following checks before start-
ing up or testing the functioning of the storage cylinder. In
particular, check that:
- The supply cocks in the domestic water circuit are
all open
- The water connections to the boiler and solar collec-
tors have been made correctly
- All the pipes in the water circuit have been insulated
in conformity to relevant standards
- The electrical connections of all accessories have
been made correctly
- The solar collector circuit has been correctly ushed
out and lled with water-glycol mix, and all air has
been bled out of the circuit (see the manual for the
solar collectors)
- Start up the boiler (if installed) as instructed in its own
manual.
- Put the solar collectors into service. See the manuals
for the solar collectors and associated accessories.
Once the system has been started up, perform the follow-
ing checks.
- Make sure that all pumps are free and rotate in the
right direction
- Make sure that all circuits have been bled.
- Make sure that the boiler and solar collectors con-
nected to the system shut down correctly when their
mains power switches are turned OFF.
Provided the above checks have been completed satisfac-
torily, restart the system and verify its performance.
16 TEMPORARY SHUTDOWN
If you are going away for a short period of time like a week-
end or a short holiday, etc., and outdoor temperatures are
going to remain above ZERO, proceed as follows.
- Adjust the storage cylinder thermostat to its minimum
setting.
b
If the temperature to which the heater is exposed can
fall below 0°C (frost hazard), perform the operations
described in paragraph "Shutdown for extended pe-
riods".
17 PREPARING FOR EXTENDED
PERIODS OF DISUSE
If the storage cylinder is not going to be used for an extend-
ed period of time, perform the following operations:
- Switch the electricity supply to the storage cylinder’s
valve group and to any associated boiler OFF at the
main switch and at the control panel
- Close the shut-off cocks for the domestic hot water
circuit.
b
Drain the central heating circuit and domestic hot wa-
ter circuit if there is any risk of freezing.
TechnicalAssistanceCentre

TECHNICAL ASSISTANCE CENTRE
15
18 MAINTENANCE
Scheduled maintenance is essential for the safety, efcien-
cy and long working life of your storage cylinder. Proper
maintenance also reduces energy consumption and en-
sures reliability over time. Have your storage cylinder ser-
viced either by the manufacturer’s Technical Assistance
Centre or by a qualied heating engineer at least once a
year.
Perform the following operations before beginning any
maintenance:
- Switch the electricity supply to the storage cylinder’s
valve group and to any associated boiler OFF at the
main switch and at the control panel
- Close the shut-off cocks for the domestic hot water
circuit
- Drain the storage cylinder’s DHW (secondary) water
circuit.
19 CLEANING AND REMOVING
INTERNAL COMPONENTS
EXTERNAL CLEANING
Clean the outside of the storage cylinder with a soft cloth
damped in soapy water. To remove stubborn marks, use a
cloth damped in a 50% mix of water and denatured alco-
hol or a suitable cleaning product. Dry the storage cylinder
after cleaning it.
a
Do not use abrasive products, petrol or triethylene.
INTERNAL CLEANING
Removing and checking the magnesium anode
- Remove the cap (1), cover (2) and the anode insula-
tor disc.
12
- Use a 45 mm wrench to unscrew the anode plug (3).
3
- Check the magnesium anode for wear and replace it
if necessary.
- Repeat this operation on the second magnesium an-
ode, using a suitable box spanner to remove it.
- On completion of cleaning, follow the above steps in
the reverse order to ret all removed parts.
NOTE: Tighten the anode plug to a torque of 25-30 Nm.
Cleaning inside the storage cylinder
- Remove the ange cover (4)
- Unscrew the bolts (6) securing the ange (5) and re-
move the ange
- Remove the seal
- Clean inside the storage cylinder and remove any
residues through the access hole.
4
5
6
b
Check the seal for wear and replace it if necessary.
On completion of cleaning, follow the above steps in the
reverse order to ret all removed parts.
b
Tighten the bolts (6), proceeding diagonally around
the ange to apply pressure uniformly around the
seal.
- Fill the storage cylinder’s DHW (secondary circuit)
and check that there are no leaks from any of the
seals
- Check the performance of the storage cylinder.

TECHNICAL ASSISTANCE CENTRE
16
20 RECYCLING AND DISPOSAL
At the end of its useful working life, do not abandon the storage cylinder in the environment, but dispose of it through the
proper channels in accordance with applicable legislation.
21 TROUBLESHOOTING
SUPPLEMENTARY HEATING CIRCUIT
FAULT CAUSE SOLUTION
The storage cylinder functions
incorrectly or irregularly
Flow rate too high
- Fit a pressure limiter
- Fit a ow reducer
There are blockages or deposits in the
domestic hot water circuit - Check and clean as necessary
The pump is malfunctioning - Check the pump
The water temperature from the boiler
is too low - Check the temperature setting
There is air in the primary circuit - Bleed the circuit
SOLAR COLLECTOR CIRCUIT
FAULT CAUSE SOLUTION
The storage cylinder functions
incorrectly or irregularly
There is air in the circuit - Bleed the circuit
The ow rate is too low or too high - Check the ow rate of the collector
circuit
Pressure is too low - Check that circuit pressure is approx-
imately 3 bar when cold
There is lime scale or sludge in the
cylinder - Check and clean as necessary
The storage cylinder loses a lot of
heat overnight
There is natural circulation to the
collectors
- Make sure that the non-return valve
is efcient and closes properly. Re-
place if necessary

17
END USER
END USER INSTRUCTIONS
Refer to the GENERAL SAFETY INFORMATION and PRECAUTIONS section for safety-related information.
22 START-UP
The storage cylinder must be put into service for the rst
time by personnel from the manufacturer’s Technical As-
sistance Centre.
Under certain circumstances, such as after long periods of
disuse, the user may need to re-start it without involving the
Technical Assistance Centre. Before doing so, perform the
following checks and operations.
- Check that the supply cocks in the domestic water
circuit are all open
- Switch the electricity supply ON at the mains power
switch and at control panel switch (if tted).
23 TEMPORARY SHUTDOWN
To reduce to the environmental impact and save energy,
in case of brief absences, week-ends, short trips, etc., and
with external temperatures above 0°C, set the heater tem-
perature control, where available, to the minimum value.
b
If the temperature to which the heater is exposed can
fall below 0°C (frost hazard), perform the operations
described in paragraph "Shutdown for extended pe-
riods".
24 PREPARING FOR EXTENDED
PERIODS OF DISUSE
If the storage cylinder is not going to be used for an ex-
tended period of time, ask the manufacturer’s Technical
Assistance Centre to make the system safe.
25 EXTERNAL MAINTENANCE
Clean the cover, painted and plastic parts with a cloth
damped in soap and water. To remove stubborn marks,
use a cloth damped in a 50% mix of water and denatured
alcohol or a suitable cleaning product.
b
Do not use fuels, sponges impregnated with abrasive
solutions or powder detergents.
Enduser

END USER
18

END USER
19

Doc-0071222 - Rev. 3 (07/17)
Via Risorgimento, 23 A
23900 - Lecco (LC)
www.berettaboilers.com
The manufacturer strives to continuously improve all products. Appearance, dimensions, technical
specications, standard equipment and accessories are therefore liable to modication without notice.