Beretta SCV-25 User manual

Installation Manual
Solar | Solar Collector
SCV-25
Installation Manual
EN

INSTALLATION INSTRUCTIONS
2
MODEL CODE
SCV-25 20026324
Solar collectors conform to EN 12975 standard
and to Solar Keymark certification standard.
RANGE
The following symbols are used in this manual:
b CAUTION! = Indicates actions that require caution and adequate preparation
a STOP! = Identifies actions that your MUST NOT do

3
Dear Customer,
We thank you for playing your part in saving the environment and for choosing a top quality solar
collector. You have purchased a modern product that is easy to install and use, and is designed
to give you dependable and safe energy savings for many years to come. You can keep your
new solar collector in peak condition by having it serviced regularly by an authorised Technical
Assistance Centre BERETTA.
This instruction manual contains important instructions and precautions that must be observed to
ensure the trouble-free installation and efficient functioning of your solar collector.
Please accept our thanks and our congratulations on your choice of product.
Beretta

INSTALLATION INSTRUCTIONS
4
1 GENERAL SAFETY INFORMATION AND PRECAUTIONS ......................... 5
2 DESCRIPTION OF THE SOLAR COLLECTOR ............................................ 6
2.1 Description ............................................................................................................................................ 6
2.2 Identification.......................................................................................................................................... 6
2.3 Design................................................................................................................................................... 7
2.4 Technical specifications ........................................................................................................................ 8
2.5 Accessories........................................................................................................................................... 8
2.6 Collectors connection ........................................................................................................................... 9
2.7 Water circuit .......................................................................................................................................... 10
2.8 Location of probes ................................................................................................................................ 11
3 FOR THE INSTALLER.................................................................................... 12
3.1 Unpacking the collector ........................................................................................................................ 12
3.2 Dimensions and weight......................................................................................................................... 13
3.3 Handling the collector ........................................................................................................................... 14
3.4 Installation............................................................................................................................................. 14
3.5 Filling the circuit .................................................................................................................................... 16
3.6 Checks .................................................................................................................................................. 17
4 TECHNICAL ASSISTANCE CENTRE............................................................ 18
4.1 Maintenance ......................................................................................................................................... 18
CONTENTS
This manual, Code 20026429 - Rev. 8 (07/15) is made up of 20 pages.

5
1 GENERAL SAFETY INFORMATION
AND PRECAUTIONS
b As soon as you open the packaging,
check immediately that the contents are
all present and undamaged. Contact the
reseller from whom you purchased the
solar collector if you notice any prob-
lems.
b This solar collector must be used only
for the proper purpose for which it is
designed and made. The manufacturer
declines 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 solar collector must be serviced
every two years.
b Work near uncovered and live electrical
wires, with which it is possible to come
into contact, is only permitted under the
following conditions:
- Wires must be free from voltage for the
entire duration of the work.
- Parts remaining live must be covered
or accidental contact prevented.
- The following minimum safety distanc-
es must be respected:
1 m for voltages of up to 1000
Volts
3 m for voltages from 1000 to
11000 Volts
4 m for voltages from 11000 to
22000 Volts
5 m for voltages from 22000 to
38000 Volts
over 5 m if the voltage is not known.
Contact with open, live electrical wires
may lead to electrocution and may even
be fatal.
b Always wear safety goggles when drill-
ing. Always wear safety shoes, cut-proof
protective gloves and a safety helmet
when performing installation work.
b Before beginning installation work on
roofs, install the necessary fall prevention
and fall arrest devices and ensure that all
applicable safety standards are applied.
Use only tools and materials that conform
to the safety standards that are applica-
ble in the place of work.
b Only wear overalls that have a safety har-
ness (with a suitable safety or fall-arrest
belt, ropes or slings, fall dampers or dis-
sipaters). In the absence of adequate fall
prevention and security devices, failure
to use a proper safety harness may lead
to falls from great heights with serious or
even fatal consequences.
b The use of ladders leaned against walls
can lead to serious falls if the ladder
slips, slides of falls. When using ladders,
always ensure that they are stable, and
that suitable ladder stops are present. If
possible secure the ladder with hooks.
Make sure that there are no live electrical
wires near the ladder.
b Especially when installing the solar col-
lector as part of a domestic hot water
system, follow the orientation and angle
of the roof to ensure that the collector
blends in with the architecture of the
building.
b This instruction manual is an integral
part of the solar collector. It must be kept
safe and must ALWAYS accompany the
solar collector, even if it is sold to another
owner or transferred to another user or
to another installation. If you damage or
lose this manual, order a replacement
immediately from your local Technical
Assistance Centre.

INSTALLATION INSTRUCTIONS
6
The solar collectors are identified by two plates:
CSV R collectors are made up of 14 or 20
double sleeve evacuated glass tubes, each
of which contains a "U" shaped copper pipe.
These copper pipes are connected in par-
allel and filled with heat transfer fluid that
descends and rises to absorb the heat gener-
ated by solar radiation, direct and reflected
by a mirror known as a compound parabolic
concentrator. There is a vacuum inside the
double sleeved glass tubes. This provides
effective thermal insulation (on the same
principle as a vacuum flask) and permits the
collectors to generate heat from the sun even
in bad weather and in the winter. The outside
of the internal pipes is finished in a selective
absorbent coating.
The main characteristics of the CSV R collec-
tor are as follows:
- Evacuated tube technology for high tem-
peratures and high efficiency even in bad
weather.
- Circular absorbers and CPC mirrors for
maximum absorption even in oblique light.
- Long working life, with no metal parts pass-
ing through the glass tubes to cause loss of
vacuum.
- Constant absorption over time, thanks to
a selective coating that is well protected
inside the vacuum environment.
- Easy replacement of glass tubes without
having to empty the solar heating circuit.
- Elegant design.
b If these plates or any other means of clearly identifying the product are defaced, removed or lost, proper instal-
lation and servicing may be rendered difficult.
2 DESCRIPTION OF THE SOLAR COLLECTOR
2.1
DESCRIPTION
2.2
Identification
CODICE : 20025360
FABBRICATO IN ITALIA
DESCRIZIONE : CTE25V
S/N :
COLLETTORE SOLARE SOTTOVUOTO
DIMENSIONI: 1600X1730X145 mm
SUPERFICIE LORDA: 2,77 m
2
TEMPERATURA DI STAGNAZIONE: 268°C
SUPERFICIE DI APERTURA: 2,40 m
2
CONTENUTO LIQUIDO: 2,05 l
SUPERFICIE ASSORBITORE : 2,69 m
2
PESO A VUOTO: 52 kg
LIQUIDO TERMOVETTORE:
GLICOLE PREMIX (Acqua + Glicole, max concentrazione 50%)
FLUIDO NON GLICOLICO (Acqua + Inibitori di corrosione
atossici + Potassio Formiato, max concentrazione 50%)
MAX PRESSIONE ESERCIZIO: 10 bar
da Riello S.p.A.
CEN 025
20022981_E4
EN 12975
Certif. 062BN/0
10000001 BAR CODE 128B
Anno di produzione
SERIALE PROGRESSIVO
CODICE : 20025360
FABBRICATO IN ITALIA
DESCRIZIONE : CTE25V
S/N :
COLLETTORE SOLARE SOTTOVUOTO
DIMENSIONI: 1600X1730X145 mm
SUPERFICIE LORDA: 2,77 m
2
TEMPERATURA DI STAGNAZIONE: 268°C
SUPERFICIE DI APERTURA: 2,40 m
2
CONTENUTO LIQUIDO: 2,05 l
SUPERFICIE ASSORBITORE : 2,69 m
2
PESO A VUOTO: 52 kg
LIQUIDO TERMOVETTORE:
GLICOLE PREMIX (Acqua + Glicole, max concentrazione 50%)
FLUIDO NON GLICOLICO (Acqua + Inibitori di corrosione
atossici + Potassio Formiato, max concentrazione 50%)
MAX PRESSIONE ESERCIZIO: 10 bar
da Riello S.p.A.
CEN 025
20022981_E4
EN 12975
Certif. 062BN/0
10000001 BAR CODE 128B
Anno di produzione
SERIALE PROGRESSIVO
Data plate
This lists the technical specifications and performance of the product.
Serial number plate
This bears the collector’s code number, model and serial number.
Code
Year of production
Serial Number
Description
Made in Italy
by Riello S.p.A.
Evacuated
solar collector
Dimensions
Gross area
Aperture area
Absorber area
Empty weight
Matricule
Modèle
Code
Max. operating pressure
Stagnation temperature
Liquid content
Heat transfer fluid:
GLYCOL PREMIX (Water
+ Glycol, max concentra-
tion 50%)
GLYCOL-FREE FLUID
(Water + Non-toxic rust
inhibitors + Potassium
Formate, max concentra-
tion 50%)

7
Aluminium absorber
Insulation
Top pipe
Bottom pipe
Collector
return
Collector
outlet
Collector
probe socket
Glass
Vacuum
Absorbent
coating
Support frame
Direction of flow
Reflective
mirror
Collector
foot
Evacuated
tube Seal
Top
cover
plat
2.3
Design

INSTALLATION INSTRUCTIONS
8
1,0
0,8
0,6
0,4
0,2
0
0 0,02 0,04 0,06 0,08 0,10
Tm* [m2KW-1]
DESCRIPTION SCV-25
Total area 2,77 m2
Exposed area 2,40 m2
Effective absorption area 2,69 m2
Connections threaded on Ø 18 pipes mm
Empty weight 52 kg
Liquid content 2,05 l
Recommended flow rate per m2of panel 30 l/(m2h)
Absorption (α)> 94 %
Emissions (ε)< 7 %
Maximum permitted pressure 10 bar
Stagnation temperature 268 °C
Maximum number of collectors connectable in series 6 n°
Efficiency curve referred to exposed area
2.4
Technical specifications
b Minimum recommended slope is 15° (to ensure efficient self-cleaning and minimise snow pressure).
Installations in locations liable to frequent snow and hail, and installations on flat roofs in locations subject to
strong winds are not recommended (see the "Static load" section on page 14).
b These specifications are purely indicative. The entire structure must be inspected by an expert in static loading
in compliance with applicable standards.
COLLECTOR WIND AND SNOW LOADING CHART
(CALCULATED FOR STANDARD, ZONE 1 WIND LOADS AND SNOW LOADS)
Installation
height
above
ground (m)
Site’s wind
exposure
Mass in kg to secure collector
against lifting by wind Altitude
(m.a.s.l.)
Total load on roof from wind
and snow loads and collector
weight (kg)
At angle of 45° At angle of 20° At angle of 45° At angle of 20°
SCV-25
0-10 low 60 40 100 424 546
10-20 low 80 50 250 595 773
0-10 medium 80 70 100 396 510
10-20 medium 90 80 250 533 691
Description U/M
Optical efficiency (ηο) (*) 0,7 -
Thermal dispersion factor (a1) (*) 1,15 W/(m2K)
Thermal dispersion temperature
dependence factor (a2) (*)
0,011 W/(m2K2)
IAM T (50°) (*) 1,07 -
IAM L (50°) (*) 0,954 -
Efficiency (ηcol) (**) 64 %
(*) Value referred to exposed area. Tested according to
EN 12975, referred to a 33.3% water-glycol mix, flow
rate of 170 l/h and irradiation G = 800W/m2.
Tm = (Coll._inlet _temp.+Coll._outlet_temp.)/2
T*m = (Tm-T_ambient)/G
(**) Calculated with a temperature difference of 40K
between the solar collector and the surrounding air,
and with total solar radiation of 1000 W/m2referred
to the exposed area.

9
The following accessories are available, to be ordered separately.
ACCESSORY CODE
Glycol premix 1151029
Glycol-free heat transfer fluid 20 kg 20030161
Connections kit for copper pipes 20027281
Connections kit for flexible hoses 20027289
Support rail kit for 1 x 2.5 m2collector 20026381
Support rail kit for 2 x 2.5 m2collectors 20026383
0° installation kit 20008292
45° installation kit 20026384
Connecting piece kit 20008757
The diagram below illustrates the connections between solar collectors in lines.
The fittings are available as accessories to be ordered separately.
The collectors in a line are connected so that the heat transfer fluid goes through them in series.
It is also possible to connect more then one line of solar collectors both in series (max 6 collectors in series) or in
parallel. Anyway the circuit must be hydraulically balanced (see the following schemes as an example).
collector
temperature sensor
to heat
exchange circuit
from heat
exchange circuit
union
olive
olive
ring nut
ring nut
union
olive
olive
ring nut
union
olive
olive ring nut
stub pipe
stub pipe stub pipe
T T
Two lines in series Two lines in parallel
2.5
Accessories
2.6
Collectors connection

INSTALLATION INSTRUCTIONS
10
2.7
Water circuit
The diagram below illustrates the water connections between solar collectors and a storage cylinder.
3
11
RM
°C
M
4
4
4
9
8
11
17
10
13
14
2
6
12
Gruppo idraulico
5
7
15
16
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 - Heat transfer fluid recovery
M - Collector outlet
R - Collector return
b Connect no more than 6 collectors in series.
b We recommend the use of stainless steel pipes
specially made for solar collectors for the outlet,
return and probe pipes. The probe cable should
be of the shielded type.
b Do not use plastic or multistrate pipes. Operating
temperature can exceed 180°C.
b Pipe lagging must be able to resist high tempera-
tures (180°C).
Water system
Diameter of connection pipes for a specific flow rate of 30 lt/m2h
Total surface area (m2)2 - 4 6 - 12 14 - 20
Diameter of copper pipe (mm) 10 - 12 14 18
Diameter of steel pipe (inch) 3/8" - 1/2" 1/2" 3/4"
Pressure drop in solar collectors
Pressure drop (mbar)
Flow rate (l/h)
700
800
900
600
500
400
300
200
100
0
0 1000500 1500 2500 35002000 3000

11
3
11
°C
M
4
4
4
9
8
11
10
13
14
2
6
12
Gruppo idraulico
REGOLATORE
SOLARE
17
7
5
15
16
18
19
RM
The temperature sensor must be installed in a socket as near as possible to the collector outlet. Make sure that the
sensor makes good contact with the socket. Materials (sensor, cables, seals and insulation) used to install the tem-
perature sensor must be able to withstand high temperatures (up to 300°C).
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 - Storage cylinder bottom probe
18 - Storage cylinder top probe
19 - Heat transfer fluid recovery
M-Collector outlet
R- Collector return
Water system
SOLAR
REGULATOR
2.8
Location of probes

INSTALLATION INSTRUCTIONS
12
The solar collectors are packed in various
ways depending on the number of units sup-
plied.
A - Individually packaged collectors
Pallet contents:
- collector
- Documentation envelope containing:
- certificate of warranty and label with
bar code.
B - Packages of 5 collectors
Pallet contents:
- 5 collectors
- Documentation envelope containing:
- certificate of warranty and label with
bar code.
b Keep the front of the packaging and use
it to shade the glass tubes before the
system is started up.
If the solar collectors are not going to be
put into operation immediately, and there
is any risk of their being exposed to rain,
do not use the packaging to shade them
as it is not water-proof.
b The instruction manual is an integral part
of the solar connector. Once located,
read it thoroughly and keep it safe.
3 FOR THE INSTALLER
3.1
Unpacking the collector

13
1600 145
68
1552
110x14
110x20
65
1730
1700
2260 145
68
2212
1730
1700
65
Net weight 52 kg
3.2
Dimensions and weight

INSTALLATION INSTRUCTIONS
14
Assembly
The solar collector must be fitted by special-
ist personnel. Use only the assembly material
supplied with the solar collector. The support-
ing framework and all masonry or brickwork
fixing points must be checked by a person
expert in static loading, and must be suitable
for the nature of the installation site.
Static load
The solar collector must only be installed on
roofs or frames that are strong enough to
support its weight. The strength of the roof
or frame must be verified on site by a person
expert in static loading before the solar col-
lector is installed. During this process, it is
important to verify the suitability of the sup-
porting frame to hold the screw fasteners that
fix the solar collector in place. An expert in
static loading must verify that the entire frame
complies with relevant standards, especially
in areas liable to snow and areas exposed to
high winds. Conditions (gusts of wind, forma-
tion of wind vortices, etc.) at the point where
the solar collector is to be installed must be
carefully considered since these can increase
the loads on the supporting structure. Allow
for a maximum permissible total load on each
GENERAL INSTRUCTIONS
A
A
A
A
Once you have removed the outer packaging,
proceed as follows to unpack and handle the
solar collector:
- Remove the PVC wrapping to free the solar
collector from the pallet
- Tilt the solar collector slightly and grip it at
the four points shown (A) to lift it.
- Use a hoist or other suitable lifting equip-
ment to hoist the solar collector on to the
roof.
b Never lift the collector by its threaded
water fittings.
b Wear suitable personal protective equip-
ment and use suitable safety devices.
a Do not dispose of the packaging mate-
collector of 850 Pa (possible in the event of a
peak wind speed of 130 km/h).
Lightning protection
The metal piping of the solar heating circuit
must be connected to the main potential com-
pensation bar by a (yellow-green) copper wire
(H07 V-U or R) of at least 16 mm2. If a light-
ning conductor system is already installed,
the solar collectors may be connected to the
existing system. Alternatively, the solar collec-
tor piping may be connected to ground via a
ground wire sunk into the earth. Ground wires
must be sunk outside the house. The ground
wire must be connected to the potential com-
pensation bar through a wire of the same
diameter.
Connections
Solar collectors must be connected in series
using the threaded unions provided.
If flexible pipes are not used to connect the
solar collectors, the piping must be fitted with
expansion joints (U-type expansion joints,
flexible hoses) to absorb thermal expansion.
Provided adequate expansion joints are used,
up to 6 solar collectors may be connected in
3.3
Handling the collector
3.4
Installation
rial into the environment where it can
become a potential hazard. Dispose of
the packaging material in compliance
with applicable legislation.

15
series. Make sure that the unions are located
correctly when tightening them. When tighten-
ing a union with a pipe wrench or spanner,
always hold the opposite union steady with a
second tool to avoid twisting the pipe to which
the union is attached.
bAll pipes in the water circuit must be
insulated in conformity to relevant stand-
ards. Lagging and insulation must be
protected against damage by the weath-
er and birds and animals.
Angle of collectors / General
Solar collectors are designed to be installed
at angles of between 15° (minimum) and 75°
(maximum).
Make sure that the bleed and vent valves of
the collectors remain open while the collectors
are being installed.
Take care to protect all fittings, connections,
bleed and vent valves against dirt and dust
etc..
In installations which serve primarily to pro-
duce domestic hot water in the summer, install
the collectors facing from east to west at an
angle of between 20 and 60°. The ideal orien-
tation is southwards, at an angle equal to the
latitude of the location minus 10°.
If the system sustains the greatest thermal
load in the winter (as in systems that combine
domestic hot water production with central
heating), install the collectors facing south (or
south-east or south-west) at an angle greater
than 35°. The ideal orientation is southwards,
at an angle equal to the latitude of the location
plus 10°.
Flushing and filling
For safety reasons, the solar collector must be
covered, using the packaging it came in, for
at least two hours before it can be filled.
In areas liable to frost, fill the collector with an
anti-freeze heat transfer fluid.
b DO NOT ADD WATER TO THE GLYCOL
PREMIX.
The anti-freeze supplied for use with
solar collectors comes ready to use. IT
MUST NOT BE MIXED WITH WATER.
b Take care if you flush the system out,
because water trapped inside the circuit
before filling with glycol premix may
freeze.
Bleeding
Bleed the circuit:
- On startup (after initial filling) (see the figure
on page 16).
- Whenever necessary, as in the event of sys-
tem malfunctioning.
Make quite sure that all air has been bled out
of the system.
b Risk of burns from hot fluid inside the
collectors!
b Only open the vent valve if the temper-
ature of the fluid in the circuit is below
60°C.
Make sure that the collectors are not
hot before you start bleeding the circuit.
Always cover the solar collectors before
bleeding the circuit. Always perform
bleeding in the morning.
Checking the heat transfer liquid
Check the anti-freeze effect and the pH level
of the heat transfer liquid every 2 years.
- Use an instrument like a refractometer or
densimeter to check the anti-freeze effect: if
the fluid’s density differs from that declared
in the manufacturer’s technical specifica-
tions, replace the anti-freeze fluid.
- Check the pH of the anti-freeze fluid using
litmus paper: if measured pH differs from
that specified in the manufacturer’s techni-
cal specifications, replace the anti-freeze
fluid.
bAt the end of its useful life, dispose of the
product in compliance with applicable
legislation.

INSTALLATION INSTRUCTIONS
16
Perform the following steps before starting up the system.
1 - FLUSHING AND SEAL TESTING THE SYSTEM
If copper piping has been used and joints have been hot brazed, flush out the system to remove any brazing resi-
dues. Seal test the system after you have flushed it out.
b Fill the solar collector with anti-freeze heat transfer liquid immediately after flushing it out, because flushing
water may remain trapped in the circuit (with a consequent risk of freezing).
b The anti-freeze fluids supplied as accessories have been specially formulated for use in solar applications, and
maintain their characteristics for their entire working life.
The mix is also non-toxic, biodegradable and biocompatible.
b Do NOT part fill the circuit with anti-freeze then top up with water.
b Temperatures in excess of the specified working temperature can cause the anti-freeze to break down. This is
easily visible because the liquid becomes darker.
2 - FILLING
1 - Open the non-return valve (A).
2 - Open the air vent at the highest point in the
system (see figure alongside) and keep it
open throughout the filling operation.
3 - Open the vent valve (7).
4 - Pump the heat transfer fluid around the
circuit with an external filling pump until all
air bubbles have been eliminated. Close
the manual bleed valve.
5 - Temporarily raise the pressure in the sys-
tem to 4 bar.
6 - Start up the system for about 20 minutes.
7 - Bleed the system again from step 2 until all
the air has been removed.
8 - Set the circuit pressure at the boiler
according to the table below in order to
ensure a minimum pressure of 1.5 bar at
the height of the collector field.
9 - Close the non-return valve (A) and any
open vent valves to prevent the heat trans-
fer fluid from evaporating.
3.5
Filling the circuit
°C
M
A
RM
7
Manual bleed
valve (accessory)
Anti-freeze mix
Heat exchanger
of solar storage
cylinder
Solar collectors
Heat
transfer fluid
filling pump
Water control system
H
HPressure at boiler
up to 15 m 3 bar
15 - 20 m 3.5 bar
20 - 25 m 4 bar
25 - 30 m 4.5 bar
General rule: p [bar] = 1.5 + H [m] / 10

17
On completion of the installation, perform the checks listed in the table below.
DESCRIPTION OK
Collector circuit
Cold circuit pressure ____ bar (see page 16)
Collector circuit seal test
Safety valve check
Anti-freeze checked to - ____ °C
pH of heat transfer fluid = ____
Collector circuit bled
Flow rate of 30 l/h per m2checked
Non-return valve functioning
DESCRIPTION OK
Solar collectors
Visual check of collectors
Collectors cleaned if necessary
Visual check of collector fixing points
Visual check of roof impermeability
Visual check of insulation/lagging
3.6
Checks
b Do not fill the system in bright, sunny
conditions or if the collectors are hot.
Cover the solar collector with the pack-
aging it came in for at least two hours
before filling it.
b Make sure that you have bled all the air
out of the system, using the water control
system vent too.
Heat transfer fluid filling pump (accessory). A manual bleed
valve is not required if this pump is used.

INSTALLATION INSTRUCTIONS
18
The collector must be cleaned and all parts (reflector, glass tubes, etc.) inspected every six months.
REPLACING EVACUATED TUBES
The evacuated tubes are fully functional when delivered. Nevertheless, if problems occur, they can be replaced
quickly and easily.
Defective tubes are easy to recognise because their undersides turn white and their surfaces become
extremely hot.
Proceed as follows to remove an evacuated
tube. Wear gloves and take all the necessary
precautions.
- Smear the top of the tube (1) near the seal
ring with a lubricant paste
- Unscrew and remove the plug (2) from the
foot of the tube
- Pull the tube (3) downwards, twisting it gen-
tly to release it from the top seal
- Remove the tube from the bottom of the col-
lector
If you do not have sufficient room to remove
the tube downwards, proceed as follows.
- Remove the tube from the collector foot as
instructed above
- Pull the tube down about 20 cm
- Hold the tube in a glove, lift it gently and
swivel it to the left or right. This bends the
copper pipes inside the glass tube. Take
care not to damage them, however
- Pull the tube out diagonally across the col-
lector to remove it.
Reverse the above steps to fit the new tube.
b Remove any pieces of broken glass
without damaging the surface of the mir-
ror. Also remove any residues that might
have formed around the copper pipes.
b Make sure that the silicon seal ring is still
correctly seated.
1
3
2
A
4 TECHNICAL ASSISTANCE CENTRE
4.1
Maintenance

19
REPLACING THE CPC REFLECTOR
Our CPC reflectors are manufactured and delivered under the best possible conditions.
Nevertheless, if a fault (e.g. a large dent) is found, they can be replaced quickly and easily.
Proceed as follows, taking all the necessary
precautions, to remove a damaged reflector:
- Unscrew and remove the plug (1) from the
foot of the collector.
- Remove the bracket (2) into which the plug
was screwed by bending back the clips (3).
- Remove the reflector (4) without moving its
glass tube.
14
2
3
4

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.
20026429 - Rev. 8 (07/15)