Beretta SC-F25/1 User manual

SOLAR
COLLECTORS
SC-F25/1
SOLAR
INSTALLATION INSTRUCTIONS

INSTALLATION INSTRUCTIONS
2
MODEL CODE
SC-F25/1 20014637
Kit of 2collectors SC-F25/1 20014640
Kit of 5collectors SC-F25/1 20014641
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
Beretta
Technical Assistance Centre.
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 ........................................................................................................................... 13
3.4 Installation............................................................................................................................................. 14
3.5 Filling the circuit .................................................................................................................................... 15
3.6 Checks .................................................................................................................................................. 16
CONTENTS
This manual, Code 20013697 - Rev. 8(12/12) 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
These panel type solar collectors have two
water fittings and consist of an aluminium
structure with a single-piece copper absor-
ber plate. This has a highly selective finish
obtained by a special vacuum treatment
called “TiNOX”, which guarantees excellent
collector performance. The absorber plate
is ultrasonically welded to 12 copper pipes
through which the heat transfer fluid flows.
The two main pipe connection manifolds are
also in copper. The top manifold has a central
choke to allow the first 6 pipes to be fed in
parallel. After the heat transfer fluid reaches
the bottom manifold, it rises through the
second group of 6 pipes to the top manifold
again. This effectively doubles the thermal
length of the collector.
Each panel is protected by solar, tempered
glass with low iron oxide content and a high
energy transmission factor. The bottom of the
tray are lined with 4 cm of rock wool insula-
tion. The temperature probe is installed in a
special copper socket.
These solar collectors are easy to install.
Provided they are properly installed, they
provide reliable, long lasting and extremely
efficient service.
2 DESCRIPTION OF THE SOLAR COLLECTOR
2.1
DESCRIPTION
2.2
identification
The solar collectors are identified by two plates:
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.
- 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.
Serial number
Model
Code
066316
DIMENSIONI : 2046X1186X90 mm
TEMP. MASSIMA : 204 °C
20008081
FABBRICATO IN ITALIA da Riello S.p.A.
09xxxxxx
Code
Year of production
Serial Number
Description Made in Italy
by Riello S.p.A.
Flat plate
solar collector
Dimensions
Gross area
Aperture area
Absorber area
Empty weight
Maximum operating pressure
Stagnation temperature
Liquid content
Max glycol concentration
Heat transfer fluid:
water+propylene glycol
Up to max 6 collectors can be connected

7
2.3
Design
Collector
probe socket
Collector
outlet
Collector
return
Direction of
flow of heat
transfer liquid
Connector Ø 22 mm.
Glass 3,2 mm
Connection ring nut, 1"

INSTALLATION INSTRUCTIONS
8
The following accessories are available, to be ordered separately.
ACCESSORY CODE
Fittings kit 20014661
Flexible hose connections kit 20001452
Manual bleed valve 1150629
Glycol anti-freeze (5 kg) 1150549
Glycol anti-freeze (10 kg) 1150559
2.4
Technical specifications
2.5
Accessories
DESCRIPTION
Total area 2,43 m2
Exposed area 2,20 m2
Effective absorption area 2,15 m2
Connections (M) - (F) 1" Ø
Empty weight 40 kg
Liquid content 1,6 l
Recommended flow rate per m2of panel 30 l/h
Glass thickness 3,2 mm
Absorption (α) ~ 95 %
Emissions (ε) ~ 5 %
Maximum permitted pressure 10 bar
Maximum temperature 204 °C
Maximum number of collectors connectable in series 6 n°
1
0,8
0,6
0,4
0,2
000,020,040,060,080,1 0,12
Tm[m2K/W]
*
Efficiency curve
Tested according to EN 12975, referred to
a 33.3% water-glycol mix, flow rate of 75 l/h
and irradiation G = 800W/m2.
Tm = (Coll._inlet _temp.+Coll._outlet_temp.)/2
T*m = (Tm - ambient_temp)/G
Optical effi-
ciency of
absorber
(ηο)
0,798 4,27 0,003
Thermal dispersion factor
of absorber
a1
W/(m2K)
a2
W/(m2K2)
WIND AND SNOW LOADS ON COLLECTORS
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
Installation height
above ground Wind speed
Mass in kg to secure collector against
lifting by wind
Load on roof from wind, snow, and
collector weight
At angle of 45° At angle of 20 At angle of 45° At angle of 20°
0 - 8 m 100 km/h 80 kg 40 kg 320 kg 345 kg
8 - 20 m 130 km/h 180 kg 90 kg 470 kg 430 kg
20 - 100 m 150 km/h 280 kg 150 kg 624 kg 525 kg

9
2.6
Collectors connection
The diagram below illustrates the connections between solar collectors in lines.
The collectors in a line are connected so that the heat transfer fluid goes through them in series.
The connection with the heat transfer circuit that goes toward the heat exchanger must be the one near the sensor
pocket of the last collector of the line (see the picture above).
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).
TT
Two lines in series Two lines in parallel
from the
heat transfer circuit
half union
ring nut
seal ring
seal ring
male union
sensor pocket
seal ring
toward the
heat transfer
circuit

INSTALLATION INSTRUCTIONS
10
2.7
Water circuit
The diagram below illustrates the water connections between solar collectors and a storage heater.
3
11
RM
°C
M
4
4
4
9
8
11
17
10
13
14
2
6
12
5
7
15
16
Water control system
1 - Solar collector
2 - Storage heater
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 If copper pipes are used, joints must be
hot brazed.
b We recommend the use of stainless
steel pipes specially made for solar col-
lectors 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
temperatures (180°C).
140
160
120
100
80
60
40
20
0
0 100 200 300 400 500 600 700 800 900 1000
Pressure drop (mbar)
Flow rate (l/h)
Pressure drop in solar collectors (*)
(*) With antifreeze-water mix of 33,3% / 67,7% and heat transfer medium temperature = 20°C.