Beretta IDRA N DS 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. 0 (05/16) comprises 20 pages.
3
Dear Customer,
Thank you for choosing a Bsolar storage cylinder. You have purchased a modern, quality product that is designed
to give dependable and safe service and to provide comfort in the home for many years to come. Arrange for your B
solar storage cylinder to be serviced regularly by an authorised Bservice centre. Their personnel are specially trai-
ned to keep your solar storage cylinder efficient and cheap to run. Bservice centres also stock any original spare
parts that might be required.
This manual contains important instructions and precautions that must be observed to ensure the trouble-free installation
and efficient functioning of your Bsolar storage cylinder.
Please accept our renewed thanks for your purchase,
Beretta
CONFORMITY
Bstorage cylinders conform to DIN 4753-3/UNI and UNI EN 10025 standards.
b
This product must only be used for the purpose for which it is designed and made, as specified by B. B
declines all responsibility, contractual or other, for damage to property or injury to persons or animals caused by
improper installation, adjustment, maintenance or use.
RANGE
MODEL CODE
IDRA N DS 1500 20052790
IDRA N DS 2000 20052791
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! = Identifies actions that require caution
and adequate preparation.
a
STOP! = Identifies actions that you MUST NOT do.
This manual, Code
- Rev.
comprises
pages.
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1 General Safety Information . . . . . . . . . . . . . . . . . . 4
2 Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Description of the appliance. . . . . . . . . . . . . . . . . 5
4 Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
5 System layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
6 Technical specifications . . . . . . . . . . . . . . . . . . . . 6
7 Water circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
8 Location of sensors. . . . . . . . . . . . . . . . . . . . . . . . 9
9 Overall dimensions and water fittings. . . . . . . . . 10
INSTALLER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
10 Unpacking the product . . . . . . . . . . . . . . . . . . . . 11
11 Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
12 Installing the magnesium anodes . . . . . . . . . . . . 13
13 Fitting the insulation . . . . . . . . . . . . . . . . . . . . . . 14
14 Place of installation . . . . . . . . . . . . . . . . . . . . . . . 15
15 Installation in older systems and systems requiring
modernisation . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
TECHNICAL ASSISTANCE CENTRE . . . . . . . . . . . . 16
16 Putting into service . . . . . . . . . . . . . . . . . . . . . . . 16
17 Temporary shutdown. . . . . . . . . . . . . . . . . . . . . . 16
18 Preparing for extended periods of disuse . . . . . 16
19 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
20 Cleaning and removing internal components. . . 17
21 Recycling and disposal . . . . . . . . . . . . . . . . . . . 18
22 Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . 18
END USER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
23 Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
24 Temporary shutdown. . . . . . . . . . . . . . . . . . . . . . 19
25 Preparing for extended periods of disuse . . . . . 19
26 External maintenance . . . . . . . . . . . . . . . . . . . . . 19

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 di-
screpancies or damage to the Bdealer who sold
it.
b
This product must be installed by a legally qualified
heating engineer. On completion of the installation,
the installer must issue the owner with a declaration
of conformity confirming that the installation has been
completed to the highest standards in compliance
with the instructions provided by Bin this in-
struction manual, and that it conforms to all appli-
cable laws and standards.
b
This product must only be used for the purpose
for which it is designed and made, as specified by
B. Bdeclines all responsibility, contractual or
other, for damage to property or injury to persons or
animals caused by improper installation, adjustment,
maintenance or use.
b
The product must be serviced at least once a year.
Servicing must be arranged in advance with the
BTechnical Assistance Centre.
b
All servicing and repairs must be performed by a
qualified heating engineer.
b
If water leaks from the storage cylinder, turn off the
water supply and contact B’s Technical Assistan-
ce Centre or a qualified heating engineer immedia-
tely.
b
If the solar storage cylinder is not going to be used for
an extended period of time, contact the manufactu-
rer’s Technical Assistance Centre to have at least the
following operations 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 fitted) and at the mains power switch
- Drain the central heating circuit and domestic hot
water circuit if there is any risk of freezing.
b
This instruction manual is an integral part of the pro-
duct. 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 imme-
diately.
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 sui-
table personal protection equipment and without fol-
lowing all applicable occupational safety standards.
a
Do not touch the storage cylinder when barefoot or
wet if it has any electrical accessories connected to
it.
a
Never clean or service the storage cylinder without
first turning the mains power switch OFF to discon-
nect all electrical accessories (if fitted) 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 the pressure in the solar collector circuit drops, do
not top up with water alone, since this increases the
risk of damage from freezing.
a
Do not use connections or safety devices or fittings
(expansion vessels, pipes, insulation) that are not
specifically designed and tested for use in solar wa-
ter heating systems.
a
Do not allow children or infirm 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 packa-
ging material in compliance with applicable legisla-
tion.
General

5
GENERAL
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 stora-
ge cylinders are:
- The cylinder and coils are specially designed and
shaped for optimum performance in terms of stratifi-
cation, heat exchange and replenishment times
- vitrified cylinder lining, bacteriologically inert for ma-
ximum 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 fittings are available at different heights, per-
mitting different hot water generators to be used wi-
thout reducing the stratification effect
- a flange 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 hea-
ting systems in which Bboilers or water heaters provi-
de supplementary heat.
4 IDENTIFICATION
B IDRA N DS storage cylinders are identified by:
Data plate
This lists the technical specifications 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
difficult.
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
- 2000)
5 Auxiliary temperature sensor socket (for models 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 flange
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

6
GENERAL
6 TECHNICAL SPECIFICATIONS
DESCRIPTION
IDRA N DS
1500 2000 2600
Type of storage cylinder Vitrified
Storage cylinder layout Vertical
Heat exchanger layout Vertical
Diameter of storage cylinder with insulation 1200 1300 1450 mm
Diameter of storage cylinder without insulation 1000 1100 1250 mm
Height with insulation 2185 2470 2455 mm
Insulation thickness 100 mm
Diameter/length of first magnesium anode 32/700 mm
Diameter/length of second magnesium anode 32/400 32/700 mm
Flange diameter 290/220 mm
Sensor socket diameter 8 mm
Sleeve for electric heating element (not supplied) 1"1/2 Ø
Bottom coil water capacity 19,4 28,1 28,4 l
Top coil water capacity 10,4 16,9 20,3 l
Bottom coil heat exchange surface area 3,4 4,6 4,6 m2
Top coil heat exchange surface area 1,8 2,8 3,3 m2
Maximum operating pressure of storage cylinder 8 bar
Maximum operating pressure of coils 6 bar
Maximum operating temperature 99 °C
Net weight with insulation 330 544 600 kg
Heat loss according to EN 12897:2006 at ∆T=40 °C 3,93 4,77 5,42 kWh/24h
Power absorbed by bottom coil (*) 88 120 110 kW
Power absorbed by top coil (*) 47 73 79 kW
Domestic hot water production – bottom coil (*) 2200 2900 4700 l/h
Domestic hot water production – top coil (*) 1200 1800 3400 l/h
Flow required at bottom coil (*) 3,8 5,2 5,9 m3/h
Flow required at top coil (*) 2,0 3,1 4,3 m3/h
Useful volume 1390 1950 2572 l
Dispersion 250 305 330 W
6 7,32 7,92 kWh/24h
Insulation type Soft PU shells
Useful non-solar volume (Vbu) 525 800 1000 l
(*) In accordance with DIN 4708, in order to produce hot water with a ∆T of 20°C (80°/60°C) at the coil, the absorbed
power and flow rate values specified for the coil in the table must be respected.

7
GENERAL
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)

8
GENERAL
7 WATER CIRCUIT
TYPICAL WATER SYSTEM SCHEMATIC
3
2
R
M
°C
M
4
4
4
9
8
11
10
13
14
6
5
12
Water control
system
15 16
7
UAC
EAF
PRIMARY
MC
RC
RL
SB
4
4
11
12
5
10
4
4
8
17 18
19
Outlet
4
4
11
10
Inlet
4
4
12
5
4 4
1 1
1 Solar collector
2 Storage cylinder
3 Collector probe
4 Disconnect valves
5 Non-return valve
6 Temperature gauge
7 Vent valve
8 Safety valve
9 Pressure gauge
10 Drain
11 Expansion vessel
12 Pump
13 Flow regulator
14 Flow meter
15 Vent cock
16 Manual bleed valve (accessory)
17 Water softener filter
18 Pressure reducer
19 Mixer valve
UAC Domestic hot water outlet
EAF Domestic cold water inlet
MC Outlet from boiler
RC Return to boiler
M Collector outlet
R Collector return
RL DHW circulation
SB Storage cylinder drain
Note! The above schematic is purely indicative.
b
B IDRA N DS storage cylinders are delivered wi-
thout a boiler heating pump. A suitably rated pump
must be provided and installed separately. Flow rate
from the solar collector circuit depends on the type
and number of collectors installed. For further infor-
mation, consult the manual for the collectors.
b
The domestic hot water system MUST INCLUDE an
expansion vessel, safety valve, automatic vent valve
and storage cylinder drain cock.
b
Safety valves must be connected to a suitable col-
lection and drain system. The manufacturer declines
all responsibility for damage caused by water esca-
ping from safety valves.
b
The choice of system components and the method
of their installation are left up to the heating engineer
installing the system. Installers must use their exper-
tise to ensure proper installation and functioning in
conformity to all applicable legislation.
b
Circuits filled with anti-freeze must be fitted with water
disconnectors.
b
If the water supply is unsoftened, avoid setting the
maximum temperature of the storage cylinder above
60°C, since higher temperatures can lead to the for-
mation of more lime scale and consequently poorer
thermal exchange efficiency.
b
Make sure that the storage cylinder is full of water
before starting up the solar heating system.

9
GENERAL
b
If the storage cylinder is installed in systems that ope-
rate at pressures in excess of 4 bar, fit a pressure
reducer.
b
Take care when opening the solar heating circuit’s
vent valve. Risk of burns!
b
Make sure that the expansion vessel is able to wi-
thstand high temperatures and that its membrane is
resistant to the water-glycol mix.
b
Use a thermostatic mixer valve to limit the domestic
hot water outlet temperature.
b
If the pressure in the solar heating circuit drops, do
NOT top up with water but use the proper water-glycol
mix. Risk of freezing!
b
All piping, collectors, heat exchangers and other de-
vices in the circuit must be subjected to proper hy-
draulic seal testing.
8 LOCATION OF SENSORS
B IDRA N DS storage cylinders are equipped with de-
dicated 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. Installers
must use their expertise to ensure proper installation
and functioning in compliance with all applicable legi-
slation.
b
Joins between temperature sensor cables and con-
trol panel extension cables must be soldered and
protected by sheaths or other forms of electrical in-
sulation.

10
GENERAL
9 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 flow directions.
EAF
R
UAC
RC
RL
M
MC
SB
E
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 1/2" F - Ø/mm
Psc2 Diameter/length of boiler sensor socket - - 1/2" F Ø/mm
Psr Diameter/length of solar controller sensor socket 1/2" F Ø/mm
RE Sleeve for electric heating element (not supplied) 1 1/2” F Ø
AD1 Diameter/length of first 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 - - 1455 mm
C 1820 2000 1950 mm
D 280 260 235 mm
E 415 400 430 mm
F 525 660 655 mm
G 1125 1205 1085 mm
H 1220 1315 1255 mm
I 1315 1425 1425 mm
L 1410 1485 - mm
M 1720 1870 1845 mm
N 1870 1990 1950 mm
O 2185 2470 2455 mm
P 1200 1300 1450 mm
b
We recommend that you install isolating valves in the outlet and return lines.
b
Check the efficiency of the seals when filling/refilling the storage cylinder.

11
INSTALLER
10 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 in-
side the packaging:
- Instruction manual
- Bar code label
- Hydraulic test certificate
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 first 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
elegant outer covering, fitting insulation sleeves, top
cover, flange cover, identification plates and docu-
mentation.
The following items are delivered in a plastic bag inside the
packaging:
- Instruction manual
- Bar code labels
- Hydraulic test certificate
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

12
INSTALLER
MODELS IDRA N DS 2600
B IDRA N DS storage cylinders come in two separate
packages:
- The first 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, fitting insu-
lation sleeves, top cover, flange cover, identification
plates and documentation.
The following items are delivered in a plastic bag inside the
packaging:
- Instruction manual
- Bar code labels
- Hydraulic test certificate
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.
11 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 packa-
ging material in compliance with applicable legisla-
tion.
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 cylin-
der 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
stable, and then remove the pallet
- Carefully rotate and slide the storage cylinder off the
platform on to the floor
- Remove the platform. Position the storage cylinder as
required.

13
INSTALLER
MODELS IDRA N DS 2000
To remove the storage cylinder from the pallet, first 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
12 INSTALLING THE MAGNESIUM
ANODES
Proceed as follows to install the magnesium anodes:
- Remove the protective plugs
- Fit the two magnesium anodes in the fittings (1) and
(2)
- Screw in the magnesium anodes using a suitable
spanner.
1
2
2
NOTE: Tighten to a torque of 25 Nm.

14
INSTALLER
13 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 fit 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 fittings 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 fittings and fit the insu-
lation sleeves (5)
- Fit the flange cover (6)
- Finally, fit the insulation top panel (7) and cover it with
the thermoformed cover (8).
5
7
8
6

15
INSTALLER
14 PLACE OF INSTALLATION
B IDRA N DS storage cylinders can be installed in any
room where there is no specific requirement for an electri-
cal protection rating higher than IP X0D.
≥ 0,4 m
≥ 0,6 m
≥ 0,3 m ≥ 0,4 m
b
Specified 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, ac-
cess must permit the storage cylinder to be removed
without disassembly at the end of its useful life, and
another unit to be installed in its place. Users are the-
refore 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.
15 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 fitted with safety and
control devices in accordance with applicable legi-
slation and standards
- Make sure that the central heating circuit has been
flushed 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

16
TECHNICAL ASSISTANCE CENTRE
16 PUTTING INTO SERVICE
It is essential to perform the following checks before star-
ting 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 flushed
out and filled 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 fol-
lowing 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.
17 TEMPORARY SHUTDOWN
If you are going away for a short period of time like a we-
ekend 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 outdoor temperature may drop below ZERO (risk
of freezing) perform the operations described in the
“Preparing for extended periods of disuse” section.
18 PREPARING FOR EXTENDED
PERIODS OF DISUSE
If the storage cylinder is not going to be used for an exten-
ded 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

17
TECHNICAL ASSISTANCE CENTRE
19 MAINTENANCE
Scheduled maintenance is essential for the safety, efficien-
cy and long working life of your storage cylinder. Proper
maintenance also reduces energy consumption and ensu-
res reliability over time. Have your storage cylinder serviced
either by the manufacturer’s Technical Assistance Centre or
by a qualified 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.
20 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 alcohol
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
anode, using a suitable box spanner to remove it.
- On completion of cleaning, follow the above steps in
the reverse order to refit all removed parts.
NOTE: Tighten the anode plug to a torque of 25-30 Nm.
Cleaning inside the storage cylinder
- Remove the flange cover (4)
- Unscrew the bolts (6) securing the flange (5) and re-
move the flange
- Remove the seal
- Clean inside the storage cylinder and remove any re-
sidues 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 refit all removed parts.
b
Tighten the bolts (6), proceeding diagonally around
the flange 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 se-
als
- Check the performance of the storage cylinder.

18
TECHNICAL ASSISTANCE CENTRE
21 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.
22 TROUBLESHOOTING
SUPPLEMENTARY HEATING CIRCUIT
FAULT CAUSE SOLUTION
The storage cylinder functions
incorrectly or irregularly
Flow rate too high
- Fit a pressure limiter
- Fit a flow 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 flow rate is too low or too high - Check the flow rate of the collector
circuit
Pressure is too low - Check that circuit pressure is ap-
proximately 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
efficient and closes properly. Repla-
ce if necessary

19
END USER
END USER INSTRUCTIONS
Refer to the GENERAL SAFETY INFORMATION and PRECAUTIONS section for safety-related information.
23 START-UP
The storage cylinder must be put into service for the first
time by personnel from the manufacturer’s Technical Assi-
stance 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 fitted).
24 TEMPORARY SHUTDOWN
To reduce impact on the environment and save energy,
before leaving for the weekend or a short break, etc., pro-
vided outdoor temperatures will remain above ZERO, sim-
ply adjust the storage cylinder’s thermostat to its minimum
temperature.
b
If outdoor temperature may drop below ZERO (risk
of freezing) perform the operations described in the
“Preparing for extended periods of disuse” section.
25 PREPARING FOR EXTENDED
PERIODS OF DISUSE
If the storage cylinder is not going to be used for an exten-
ded period of time, ask the manufacturer’s Technical Assi-
stance Centre to make the system safe.
26 EXTERNAL MAINTENANCE
Clean the cover, painted and plastic parts with a cloth dam-
ped 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

Doc-0071222 - Rev. 0 (05/16)
Commercial Ofces: Via Risorgimento, 23 A
23900 - Lecco
www.berettaboilers.com
Beretta reserves the right to modify the characteristics and
specications given in this publication at any time and without prior
notice as part of its policy of continuous product improvement.
This publication cannot therefore be understood as a contract with
third parties.