installation manual

HYBRID STOR
430 - 550
750 - 1000
INSTALLATION MANUAL
COMBINATION
STORAGE
CYLINDERS
TRIPLE COIL
INSTALLATION MANUAL
Dear Installer,
Thank you for choosing a BERETTA HYBRID STOR, combination storage cylinder. You have
purchased a modern and quality product.
This instruction manual contains important instructions and precautions that must be observed
to ensure the trouble-free installation and efficient functioning of your BERETTA HYBRID STOR
combination storage cylinder.
Please accept our renewed thanks for your purchase.
Beretta
2
RANGE
MODEL
HYBRID STOR 430
HYBRID STOR 550
HYBRID STOR 750
HYBRID STOR 1000
The following symbols are used in this manual:
bCAUTION! = Indicates actions that require caution and adequate preparation
aSTOP! = Identifies actions that you MUST NOT do
This manual, Code 20051873 - Rev. 0 (05/12) is made up of 24 pages.
CODE
20051862
20051863
20051864
20051866
CONTENTS
1 SAFETY PRECAUTIONS............................................................................ 4
2 PRODUCT DESCRIPTION.......................................................................... 5
2.1
Description...........................................................................................................................................5
2.2Identification........................................................................................................................................5
2.3Design..................................................................................................................................................6
2.4
Technical specifications......................................................................................................................7
2.5Accessories.......................................................................................................................................10
2.6Water circuit.......................................................................................................................................11
2.7Dimensions and water connections..................................................................................................12
3INSTALLATION.......................................................................................... 14
3.1
Unpacking the product......................................................................................................................14
3.2Handling............................................................................................................................................14
3.3Place of installation of the combined storage cylinder.....................................................................15
3.4Installation in older systems and systems requiring modernisation.................................................15
3.5
Location of probes.............................................................................................................................15
3.6Preparing for initial start-up...............................................................................................................16
3.7Initial start-up.....................................................................................................................................16
3.8Checks during and after initial start-up.............................................................................................16
3.9Preparing for extended periods of disuse.........................................................................................17
3.10Maintenance......................................................................................................................................18
3.11Cleaning.............................................................................................................................................18
4 TROUBLESHOOTING............................................................................... 19
3
INSTALLATION MANUAL
1 SAFETY PRECAUTIONS
bbAs soon as you open the packaging, bbThis instruction manual is an integral
check immediately that the contents are
all present and undamaged. Contact the
reseller from whom you purchased the
product if you notice any problems.
bbThis BERETTA HYBRID STOR combi-
nation storage cylinder must be installed
by a qualified installer. 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 in this instruction manual, and
that it conforms to all applicable laws
and standards.
bbThis BERETTA HYBRID STOR combi-
nation storage heater must only be used
for the purpose specified and for which it
is designed. 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.
bbIf you notice any water leaking from the
cylinder, disconnect it immediately from
the mains electricity supply, shut off the
water supply, and notify your Technical
Assistance Centre or a qualified technician immediately.
4
bbThis combination storage cylinder must
be serviced at least once a year.
If the combination storage cylinder is not
going to be used for an extended period
of time, prepare it for shut-down as follows:
- Turn the system’s main power switch
OFF
- Drain the solar water circuit
- Close the fuel cock and heating water
cock
-Drain the central heating circuit and
domestic hot water circuit if there is
any risk of freezing
bbAnti-freeze (propylene glycol) is available separately and must be mixed with
water in a percentage varying from 30%
to 50%.
part of the appliance. It must be kept
safe and must ALWAYS accompany the
appliance, 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.
The operation of any appliance that uses
electrical power and water demands that a
number of fundamental safety precautions be
respected. In particular:
aaDo not allow children or infirm persons to
operate the combination storage cylinder unsupervised.
aaDo not touch the combination storage
cylinder when barefoot or wet.
aaNever clean or service the combination
storage cylinder without first disconnecting it from the mains electricity supply
by turning the main power switch and
the control panel switch OFF.
aaDo not interfere with any control devices without specific authorisation and
instructions from the manufacturer.
aaDo not leave packaging material within
the reach of children, since it can become a potential hazard.
aaIf the pressure in the solar heating circuit
drops, do not top up with water alone,
since this increases the risk of damage
from freezing.
aaDo not use connections or safety devi-
ces or fittings (expansion vessels, pipes,
insulation) that are not specifically designed and tested for use in solar heating
installations.
2 PRODUCT DESCRIPTION
2.1 Description
HYBRID STOR triple coil combination storage
cylinders come in the form of an inertial (buffer) storage cylinder with three internal coils.
The bottom coil receives heat from the solar
circuit while the top coil receives heat from the
boiler. A third coil in stainless steel produces
domestic hot water.
The most important technical features of these
combination storage cylinders are:
-- The cylinder and coils are specially designed and shaped for optimum performance
in terms of stratification, heat exchange and
replenishment times.
-- The stainless steel, rapid heat exchange coil for domestic hot water production
is bacteriologically inert and guarantees
maximum hygiene and reduced lime scale
deposits.
-- W
ater fittings are available at different
heights, permitting different boilers to be
used without reducing the stratification
effect.
-- CFC-free polyurethane insulation and an
elegant external casing reduce heat loss
and improve efficiency.
-- Excellent flexibility permits use in both high
and low temperature systems.
-- Dimensions are extremely compact thanks
to the clever combination of an inertial storage cylinder and domestic hot water coil.
HYBRID STOR triple coil combination storage
cylinders can be connected to a special solar
controller and can be integrated in solar heating systems in which boilers or water heaters
serve as auxiliary heat generators
2.2 Identification
HYBRID STOR combination storage cylinders are identified by three plates:
–Data plate
This lists the technical specifications and
performance of the product.
–Product identification plate
This states the name of the product.
Beretta Caldaie
Via Risorgimento, 13
23900 Lecco (LC)
067659IF
BOLLITORE SOLARE
BALLON SOLAIRE
Modello
Modele
Matricola
Fabrication
Anno
Année
Codice
Code
Massima potenza assorbita sup.[T° Primario 80°C]
Puissance absorbée serpentin sup.[T° Primaire 80°C]
kW
Portata specifica sup.[∆T 35°C]
Débit specifique sup. [∆T 35°C]
l/1'
Massima potenza assorbita inf. [T° Primario 80°C]
Maximum puissance absorbée inf. [T° Primaire 80°C]
kW
Portata specifica inf. [∆T 35°C]
Débit specifique inf. [∆T 35°C]
l/1'
Press. esercizio max.
Pression service max.
bar
Capacità del bollitore
Capacité ballon
l
Potenza elettric assorbita
Puissance élect. absorbée
W
Alimentazione elettrica
Alimentat. élect.
V-Hz
Collegamento di terra obbligatorio - Raccordement a la terre obligatoire
Beretta Caldaie
Via Risorgimento, 13
23900 Lecco (LC)
Fabrication
Pot.ass.sup.max.
Puiss.abs.sup.maxi
kW
Modello
Modele
Pot.ass.inf.max.
Puiss.abs.inf.maxi
kW
–Serial number plate
This specifies the serial number, model,
consumption and capacity.
bbIf these plates or any other means of clearly identifying the product are defaced, removed or lost, proper installation and servicing may be rendered difficult.
5
INSTALLATION MANUAL
2.3 Design
12
11
10
9
8
7
6
5
13
14
7
15
16
17
18
19
20
4
6
3
21
22
2
1
1
2
3
4
5
6
-Insulation
-Domestic cold water inlet
-Inertial storage cylinder
-Bottom coil
-Temperature sensor socket
-Sleeve for electric heating element (not supplied)
7 -Boiler temperature sensor socket
8 -Top coil
9 -Storage cylinder temperature gauge
10-Domestic hot water outlet
11-DHW coil
12-Vent valve fitting
13-Inlet from boiler
23
14-Inlet from 2nd boiler
15-Central heating outlet
16-Return to 2nd boiler
17-Inlet from solar collector
18-50° C water return
19-Return to solar collector
20-Inlet from condensing boiler / 50°
C water return
21-Solar controller temperature sensor socket
22-Return to condensing boiler /
Filling
23-30° C water return / Drain
2.4 Technical specifications
DESCRIPTION
HYBRID STOR
430
550
750
Type of inertial storage cylinder
Non vitrified
Inertial storage cylinder layout
vertical
Heat exchanger layout
vertical
Primary coils
DHW coil
1000
Smooth steel pipe
Corrugated pipe in AISI 316 L stainless steel
Inertial storage cylinder capacity
407
520
732
898
l
Diameter with insulation
810
810
1000
1000
mm
Height
1650
2000
1855
2180
mm
Insulation thickness
70
100
mm
Temperature sensor socket diameter (boiler and solar system)
16
Ø mm
Temperature sensor socket diameter
8
Ø mm
1/2" M
Ø
Temperature gauge sensor socket diameter
Top primary coil water capacity
7,1
8,0
10,0
10,0
l
Bottom primary coil water capacity
11,0
12,8
17,4
19,8
l
DHW coil water capacity
23,6
23,6
30,4
30,4
l
Top primary coil heat exchange surface area
1,17
1,31
1,72
1,72
m2
Bottom primary coil heat exchange surface area
1,80
2,10
2,90
3,34
m2
DHW coil heat exchange surface area
4,5
4,5
5,8
5,8
m2
Power absorbed by top primary coil (*)
25,0
26,0
30,0
30,0
kW
Power absorbed by bottom primary coil (*)
52,0
62,0
76,0
92,0
kW
Domestic hot water production (*) – top primary coil
Maximum working pressure of inertial storage cylinder
620
750
l/h
3
5
bar
Maximum working temperature of inertial storage cylinder
99
°C
Maximum working pressure of primary coils
10
bar
Maximum working pressure of DHW coil
6
bar
Maximum working temperature of primary coils
99
°C
Maximum working temperature of DHW coil
99
°C
Recommended surface area of solar panel
6
8
12
14
m2
Net weight
168
195
239
269
kg
Gross weight (with packaging)
189
215,5
254
284,4
kg
(*) With ∆T = 35°C and primary temperature = 80-60°C.
Performance achieved with heat generator of suitable power, adjusted for a flow rate of 3000 l/h.
7
INSTALLATION MANUAL
Performance of KOMBISOLAR 3S combination storage cylinder with boiler connected in:
CONFIGURATION A
Boiler
Generatore
HYBRID STOR
DESCRIPTION
Domestic hot water production (*)
HYBRID STOR
430
550
750
1000
3250
3300
3150
3150
l/h
90°C
3600
4000
4800
4800
l
Water draw in 10 minutes with mean ∆T of 35° 80°C
HYBRIDtank
STOR
and primary storage
at:
70°C
2500
2900
l
2200
2400
4000
4000
Generatore
3400
3400
l
60°C
1300
1700
1700
l
1700
(*) With ∆T = 35°C and primary temperature = 80°C.
Performance achieved with boiler of suitable power configured for a flow rate of 3000 l/h.
8
HYBRID
CONFIGURATION
B STOR
Generatore
HYBRID STOR
Generatore
Boiler
DESCRIPTION
HYBRID STOR
430
550
750
1000
Domestic hot water production (*)
2200
2400
1800
1800
l/h
Domestic hot water production (**)
1650
1850
1450
1450
l/h
90°C
2100
2300
2500
2500
l
Water draw in 10 minutes with mean ∆T of 35° 80°C
and primary storage tank at:
70°C
1600
1800
2100
2100
l
1200
1300
1700
1700
l
60°C
800
1000
1200
1200
l
(*) With ∆T = 35°C and primary temperature = 80°C.
Performance achieved with boiler of suitable power configured for a flow rate of 3000 l/h.
(**) With ∆T = 35°C and primary temperature = 80°C.
Performance achieved with boiler of suitable power configured for a flow rate of 1500 l/h.
Pressure drop
HYBRID STOR TOP COIL
PRESSURE DROP (mbar)
900
750 - 1000
800
700
430 - 550
600
500
400
300
200
100
0
0
1000
2000
3000
4000
5000
6000
FLOW RATE (l/h)
9
Pressure drop
HYBRID STOR BOTTOM COIL
900
1000
PRESSURE DROP (mbar)
800
700
750
550
430
600
500
400
300
200
100
0
0
1000
2000
3000
FLOW RATE (l/h)
4000
HYBRID STOR DHW COIL
700
600
PRESSURE DROP (mbar)
INSTALLATION MANUAL
Pressure drop
550
500
430
750-1000
400
300
200
100
0
0
1000
2000
3000
FLOW RATE (l/h)
4000
2.5 Accessories
10
The following accessories are available, to be ordered separately.
ACCESSORY
CODE
Single phase heating element kit, 1,5 kW 1" 1/2
20015431
Single phase heating element kit, 2,2 kW 1" 1/2
4383271
Single phase heating element kit, 3 kW 1" 1/2
4383272
Three phase heating element kit, 3,8 kW 1" 1/2
20020707
Connection hose + bracket for 18 litre expansion vessel
1150499
5000
2.6 Water circuit
MC
UAC
80°C
MC2
70°C
UR
RE
M
R
RC2
60°C
R50
MCON / R50
50°C
40°C
RCON / CB
EAF
R30
30°C
SB
UAC- Domestic hot water outlet
EAF - Domestic cold water inlet
RE -Sleeve for electric heating element
M - Inlet from solar collector
R - Return to solar collector
MC - Inlet from boiler
MC2- Inlet from 2nd boiler
UR - Central heating outlet
RC2 - Return to 2nd boiler
R50 - 50° C water return
MCON- Inlet from condensing boiler
RCON- Return to condensing boiler
CB - Inertial storage cylinder filling
SB - Inertial storage cylinder drain
R30 - 30° C water return
bbThe denomination of the water fittings refers to a theoretical system configuration.
bbHYBRID STOR combination storage cylinders are delivered without a filling pump. A suitably rated pump
must be provided and installed separately.
For further information on the recommended solar heating circuit flow rate, see the installation instructions
for the water outlet and return kit.
11
BERETTA HYBRID STOR combination storage cylinders can be connected to even previously installed hot water
generators provided they are of adequate output power, but care must be taken to ensure correct water flow directions. They can also be easily integrated in solar heating systems.
Water fittings have the following specifications:
Q
VS
P
MC
UAC
MC2
UR
RC2
R
O
M
N
R50
MCON
12
G
E
RCON
F
H
I
L
B
INSTALLATION MANUAL
2.7 Dimensions and water connections
EAF
C
A
D
SB
UAC -Domestic hot water out (Ø 1”1/4 F)
EAF -Domestic cold water in (Ø 1”1/4 F)
M
-Inlet from solar collector (Ø 1” M)
R
-Return to solar collector (Ø 1” M)
MC -Inlet from boiler (Ø 1”1/4 M)
MC2 -Inlet from 2nd boiler (Ø 1” F)
UR -Central heating outlet (Ø 1” F)
DESCRIPTION
A
B
C
D
E
F
G
H
I
L
N
O
P
Q
Net weight
RC2 -Return to 2nd boiler (Ø 1” F)
R50 -50° C water return (Ø 1”1/4 M)
MCON- Inlet from condensing boiler (Ø 1” F)
RCON - Return to condensing boiler (Ø 1” F)
SB -Inertial storage cylinder drain (Ø 1”1/4 M)
VS -Vent valve fitting (Ø 1” F)
430
276
1312
177
349
699
809
834
919
1059
1289
1410
1650
405
810
168
HYBRID STOR
550
750
494
364
1657
1419
177
75
349
344
899
599
1009
899
929
855
1129
994
1309
1089
1544
1359
1756
1706
2000
1855
405
495
810
1000
195
239
We recommend that you install isolating valves in the outlet and return lines.
1000
364
1744
75
344
599
979
925
1111
1209
1476
2031
2180
495
1000
269
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
bbThe DHW production coil must be fil- bbThe choice of system components and
led and pressurised before the inertial
storage cylinder is filled.
bbIn very hard water areas, use suitably
treated water to fill the inertial storage
cylinder.
bbMake sure that the combination storage
cylinder is full of water before starting up
the solar heating system.
bbIf the combination storage cylinder is
installed in systems that operate at pressures in excess of 4 bar, fit a pressure
reducer.
bbA non-return valve must be fitted at the
top of the inertial storage cylinder to prevent natural circulation developing.
bbTake care when opening the solar heating circuit’s vent valves. Risk of burns!
bbMake sure that the solar circuit’s expan-
sion vessel is able to withstand high
temperatures and that its membrane is
resistant to the water-glycol mix.
bbThe domestic hot water system MUST
INCLUDE an expansion vessel, safety
valve, automatic vent valve and combination storage cylinder drain cock.
bbThe safety valve must be connected to a
suitable collection and drain system. The
manufacturer declines all responsibility
for damage caused by water escaping
from the safety valve.
bbUse a thermostatic mixer valve to limit
the domestic hot water outlet temperature.
bbIf the pressure in the solar heating circuit drops, do NOT top up with water but
use the proper water-glycol mix. Risk of
freezing!
bbAll piping, collectors, heat exchangers
and other devices in the circuit must
be subjected to proper hydraulic seal
testing.
the method of their installation are left
up to the installer. Installers must use
their expertise to ensure proper installation and functioning in compliance with all applicable legislation.
The lower the temperature of the heating
return (<40°C), the greater the efficiency
of the solar heating system.
bbMake sure that all components cho-
sen for use with the system are able to
withstand the thermal load involved. In
the summer months, when the solar heating system is not used for the central
heating, steam can form inside the collectors, and temperatures can exceed
120°C even near the combination storage cylinder.
bbThe size of the combination storage
cylinder must be chosen to suit the solar
heating system. It must be big enough to
store excess heat after the DHW production coil has been heated without being
too big.
bbInsulate the pipes from the inertial storage cylinder to avoid heat loss.
13
INSTALLATION MANUAL
3 INSTALLATION
3.1 Unpacking the product
HYBRID STOR combination storage cylinders
are delivered in a single package consisting
of a triple wall cardboard box (HYBRID STOR
430-550) or a plastic bag (HYBRID STOR 7501000) on a wooden pallet.
The following items are delivered in a plastic
bag inside the packaging:
-----
instruction manual
labels with bar code
hydraulic test certificate
3 adjustable feet
HYBRID STOR
430-550
HYBRID STOR
750-1000
H
bbThe instruction manual is an integral
part of the combination storage cylinder.
Once located, read it thoroughly and
keep it safe.
A
B
H
A
14
DESCRIPTION
AxBxH
Gross weight
HYBRID STOR
B
430
550
750
1000
850 x 850 x 1850
850 x 850 x 2200
1040 x 1040 x 1975
1040 x 1040 x 2300
mm
189
215,5
254
284,5
Kg
3.2 Handling
Once you have removed the outer packaging,
proceed as follows to unpack and handle the
combination storage cylinder.
bbUtilizzare adeguate protezioni antinfortunistiche.
aaÈ vietato disperdere e lasciare alla portata dei bambini il materiale dell’imballo
in quanto può essere potenziale fonte di
pericolo.
3.3 Place of installation of the combined storage cylinder
HYBRID STOR combination storage cylinders can be installed in any room where there is no
specific requirement for an electrical protection rating higher than IP X0D.
bbThe room where the appliance is installed must, however, be dry to prevent the formation of rust.
bbRespect the minimum specified installation distances to ensure correct installation and
access for maintenance.
3.4 Installation in older systems
and systems requiring modernisation
REFERENCE VALUES
pH
6-8
Electrical conductivity
below 200 mV/cm (25°C)
Chlorine ions
below 50 ppm
Sulphuric acid ions
below 50 ppm
Total iron
below 0,3 ppm
Alkalinity M
below 50 ppm
Total hardness
below 35°F
Sulphur ions
none
Ammonia ions
none
Silicon ions
below 30 ppm
When installing HYBRID STOR combination
storage cylinders in old systems or systems
requiring modernisation, always perform the
following checks:
-- Make sure that the system is fitted with safety
and control devices in accordance with applicable legislation and standards.
-- Make sure that the 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).
3.5 Location of probes
HYBRID STOR combination storage cylinders incorporate probe wells for fitting the
solar controller and boiler probes. Make sure
that these probes are inserted all the way.
bbInstallers are responsible for all con-
T
SC
SC
S
SRS
nections to the boiler or hot water
generator. Installers must ensure proper installation and functioning in compliance with all applicable legislation.
T - Temperature gauge sensor socket
(Ø 1/2" M)
SC - Boiler temperature sensor socket
(Ø 16 mm)
S - Temperature sensor socket (Ø 8 mm)
SRS-Solar controller temperature sensor
socket (Ø 16 mm)
15
INSTALLATION MANUAL
16
3.6 Preparing for initial start-up
It is essential to perform the following checks
before starting up or testing the functioning of
the combination storage cylinder. In particular,
check that:
-- The supply cocks are all open in the domestic water circuit.
-- The water connections to the boiler and
solar heating system have been made
correctly.
-- The solar heating circuit has been correctly
flushed out and filled with water-glycol mix,
and all air has been bled out of the circuit.
bThe DHW production coil must be fil-
led and pressurised before the inertial
storage cylinder is filled.
3.7 Initial start-up
Heat is only transferred from the solar heating
circuit to the combination storage cylinder
when the temperature of the solar collectors exceeds that in the combination storage
cylinder. It is therefore temperature differential
rather than absolute temperature that is important in controlling solar water heating systems.
3.8 Checks during and after initial
start-up
Once the system has been started up, perform the following checks:
Solar heating circuit
-- C
heck that the flow rate in the solar heating
circuit is equivalent to 30 l/h for each m2 of
collector area
-- C
heck that the solar heating circuit has
been properly bled
-- Set the required temperature differential
between the collector and combination storage cylinder (see the instruction manual for
the controller).
-- Start up the boiler to provide auxiliary heating for the combination storage cylinder.
-- C
heck that the cold pressure of the system
is approximately 3 bar
-- C
heck that the safety valve operates at 6
bar
2
3
4
5
1
0
6
-- C
heck that all pipes in the water circuit have
been insulated in conformity to relevant
standards.
Heating circuit
-- Check that the heating circuit has been
properly bled
Provided all the above checks have been
completed successfully, re-start the boiler
connected to the storage cylinder and check
the temperature settings and domestic hot
water draw rate.
3.9 Preparing for extended periods of disuse
If the combination storage cylinder is not
going to be used for an extended period of
time, prepare it for shut-down as follows:
-- Shut down the boiler as instructed in its own
manual
-- Turn the system’s main power switch OFF
-- Drain the solar water circuit
-- Close the fuel cock and heating water cock.
bbDrain the domestic hot water (and
central heating) circuit if there is any
risk of freezing.
Contact your local Technical Assistance
Centre if you encounter any problems in completing the above procedure.
17
INSTALLATION MANUAL
18
3.10
Maintenance
Scheduled maintenance is essential for the safety, efficiency and long working life of your combination storage cylinder. Have your combination storage cylinder serviced either by a Technical
Assistance Centre or by a qualified professional at least once a year.
Perform the following operations before beginning any maintenance:
-- S
witch 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
-- C
lose the shut-off cocks for the domestic
hot water circuit
-- Drain the combination storage cylinder.
3.11
Cleaning
EXTERNAL CLEANING
Clean the outside of the combination storage cylinder’s insulation 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 combination storage cylinder after cleaning it.
aaDo not use abrasive products, petrol or triethylene.
4 TROUBLESHOOTING
PROBLEM
Little hot water
is produced
CAUSE
The supply pressure is too high
The flow rate is too high
There are blockages or deposits
in the domestic hot water circuit
The pump is malfunctioning
Water temperature is low
The water temperature is low in
the heat generator or
solar heating system
The pump is malfunctioning
There is lime scale or
sludge in the tank
There is air in the primary circuit
Replenishment times
are too long
CORRECTIVE ACTION
Fit a pressure limiter
Fit a flow reducer
Check and clean as necessary
Check the pump
Check the setting and condition
of the thermostat
Check the pump
Check and clean as necessary
Bleed the circuit
The water temperature in the heat
generator or solar heating
system is low
Check the setting of the
thermostat
The filling pump is malfunctioning
Check the pump
There is air in the circuit
Bleed the circuit
19
INSTALLATION MANUAL
PROBLEM
Solar heating system
is inefficient
The combination storage
cylinder does not reach the
set temperature
CAUSE
CORRECTIVE ACTION
There is air in the circuit
Bleed the circuit
The flow rate is too low
or too high
Make sure that the flow rate corresponds to about 30l/h per m2.
Pressure is low
Check that the cold pressure of
the system is
approximately 3 bar
The solar controller needs
programming
There is lime scale or sludge in
the tank
The flow rate is too high
Make sure that the ∆T between
the collector and the combination
storage cylinder is not too high or
too low Set a ∆T of 8-10°C
Check and clean as necessary
Reduce pump speed and turn
the flow rate adjustment screw on
the valve group to set a flow rate
of 30l/h per m2 of
collector area
20
The pump does not work,
even if the collector probe
detects a collector temperature higher than that in
the combination storage
cylinder
The combination combination storage cylinder loses
a lot of heat overnight
Maximum temperature has been
exceeded in the collector or in
the combination storage cylinder
The solar controller has reached
maximum temperature and stopped the pump The pump will start
working again as soon as the
temperature drops in
the collectors
There is no electrical power
Check the safety devices and
electrical connections
The temperature differential is
too great for the pump to operate, or the controller is not working
Check the controller and the temperature sensor, or reduce the
temperature differential
setting
There is natural circulation
to the collectors
Make sure that the non-return
valve is sealed and closes
properly Replace it if necessary
21
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INSTALLATION MANUAL
Cod. 20051873
Via Risorgimento, 13 - 23900 Lecco (LC)
Servizio Clienti 199.13.31.31*
Assistenza Tecnica Numero Unico 199.12.12.12*
www.berettaclima.it
The manufacturer strives to continuously improve all products.
Appearance, dimensions, technical specifications, standard equipment
and accessories are therefore liable to modification without notice.