Beretta IDRA DS 200 FI, IDRA DS 300 FI, IDRA DS 430 FI, IDRA DS 550 FI Installation And Operation Manual

Installation and Operation Manual

Solar | Solar storage cylinder

IDRA DS FI

Installation and Operation Manual

EN

This manual, Code 20122522 - Rev. 3 (06/17) comprises 16 pages.

2

RANGE

MODEL CODE

IDRA DS 200 FI 20119552
IDRA DS 300 FI 20119553
IDRA DS 430 FI 20119554
IDRA DS 550 FI 20119555

ACCESSORIES

For a complete list of accessories and details of their com­patibility, refer to the Catalogue.

Dear heating engineer,
We would like to congratulate you on having recommended
a

B solar storage cylinder unit: a modern product that's

capable of ensuring a high degree of reliability, efciency,

quality and safety.
While your technical skills and knowledge will certainly be
more than sufcient, this booklet contains all the informa­tion that we have deemed necessary for the device's cor­rect and easy installation.

Thank you again, and keep up the good work,

Beretta

CONFORMITY

The B solar heaters comply with DIN 4753-3 and UNI
EN 12897.

ENGLISH

CONTENTS

The following symbols are used in this manual:

b

CAUTION! =

Identies actions that require caution

and adequate preparation.

a

STOP! =

Identies actions that you MUST NOT do.

This manual, Code

- Rev.
comprises
pages.

GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . 3

1 General Safety Information . . . . . . . . . . . . . . . . . 3

2 Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

3 Description of the appliance . . . . . . . . . . . . . . . . 4

4 Safety and control devices . . . . . . . . . . . . . . . . . 4

5 Identication . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

6 System layout. . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

7 Technical specications . . . . . . . . . . . . . . . . . . . 6

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

8 Unpacking the product . . . . . . . . . . . . . . . . . . . . 8

9 Access to the solar station. . . . . . . . . . . . . . . . . . 8

10 Place of installation . . . . . . . . . . . . . . . . . . . . . . . 8

11 Installation in older systems and systems

requiring modernisation. . . . . . . . . . . . . . . . . . . . 8

12 Water quality requirements . . . . . . . . . . . . . . . . . 8

13 Water connections . . . . . . . . . . . . . . . . . . . . . . . . 9

14 Typical water system schematics . . . . . . . . . . . 10

15 Wiring diagrams. . . . . . . . . . . . . . . . . . . . . . . . . 10

16 Electrical connections . . . . . . . . . . . . . . . . . . . . 10

17 System ushing . . . . . . . . . . . . . . . . . . . . . . . . . 12

18 System lling cock . . . . . . . . . . . . . . . . . . . . . . . 13

19 Device cleaning and maintenance . . . . . . . . . . 13

COMMISSIONING AND MAINTENANCE . . . . . . . . . 14

20 Interventions on the hydraulic system . . . . . . . . 14

21 Recycling and disposal . . . . . . . . . . . . . . . . . . . 14

END USER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

22 Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

23 Temporary shutdown . . . . . . . . . . . . . . . . . . . . . 15

24 Preparing for extended periods of disuse . . . . . 15

25 External maintenance . . . . . . . . . . . . . . . . . . . . 15

3

GENERAL INFORMATION

1 GENERAL SAFETY INFORMATION

b

Check that the product is complete, undamaged and

as ordered as soon as you receive it. Report any dis­crepancies or damage to the B dealer who sold
it.

b

This product must be installed by a legally qualied
heating engineer. On completion of the installation,

the installer must issue the owner with a declaration

of conformity conrming that the installation has been

completed to the highest standards in compliance
with the instructions provided by

B in this instruc-

tion manual, and that it conforms to all applicable
laws and standards.

b

This product must only be used for the purpose

for which it is designed and made, as specied by

B. 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.

b

The product must be serviced at least once a year.
Servicing must be arranged in advance with the

B Technical Assistance Centre.

b

All servicing and repairs must be performed by a

qualied heating engineer.

b

If water leaks from the storage cylinder, turn off the

water supply and contact B’s Technical Assis­tance Centre or a qualied heating engineer imme­diately.

b

If the product is not going to be used for an extended
period of time, contact the manufacturer’s Technical
Assistance Centre to have at least the following oper­ations performed:

- Close the shut-off cocks for the domestic hot water
circuit

- Shut down the boiler connected to the storage cylin­der as instructed in its own manual

- Switch the storage cylinder OFF at the control panel

(if tted) and at the mains power switch

- Drain the central heating circuit and domestic hot

water circuit if there is any risk of freezing.

b

This instruction manual is an integral part of the prod­uct. It must be kept safe and must ALWAYS accom­pany the product, even if it is sold to another owner or
transferred to another user or to another installation.
If you lose this manual, order a replacement immedi­ately. Keep the product purchase documents to be
presented to the

B authorised Technical Assis-

tance Centre to request a service call under warranty.

b

Size the solar expansion tank so as to ensure com­plete absorption of the expansion of the uid con-

tained within the system, with reference to the prevail­ing regulations on the matter. In particular, consider
uid characteristics, considerable uctuation of ser­vice temperature and vapour that might be generated

during solar collector stagnation stage. Proper size
of expansion tank ensures setting off of all volume
changes of the heat transfer uid, avoiding excessive
pressure increase. Limited pressure changes avoid

reaching safety valve opening pressure and the con-

sequent uid drainage.

2 PRECAUTIONS

The operation of any appliance that uses electrical power
demands that a number of fundamental safety precautions
be respected. In particular:

a

Never attempt to install the system without using suit­able personal protection equipment and without fol-

lowing all applicable occupational safety standards.

a

It is forbidden to touch the device while barefoot or
with wet or moist body parts.

a

It is forbidden to perform any technical or cleaning
operations before having disconnected the device
from its electrical power supply, by setting the sys­tem's main switch to "off".

a

It is forbidden to pull, detach, or twist the electrical
cables protruding from the device, even if it is discon­nected from its electrical power supply.

a

Do not expose the storage cylinder to the elements. It
is not designed for use outdoors.

a

If solar plant pressure decreases, it is forbidden to

top up with only water as there is a danger of freezing

and overheating.

a

Do not use connections or safety devices or ttings

(expansion vessels, pipes, insulation) that are not
specically designed and tested for use in solar wa­ter heating systems.

a

Do not allow children or inrm persons to operate the

system unsupervised.

a

Do not dispose of packaging material into the envi­ronment, or leave it within the reach of children, since
it can become a potential hazard. Dispose of packag­ing material in compliance with applicable legislation.

a

It is forbidden to use the pipes for handling.

General information

GENERAL INFORMATION

4

3 DESCRIPTION OF THE

APPLIANCE

B

IDRA DS FI

double-coil solar boilers, with pre-tted

solar station, are available in four different models, can be
integrated in solar systems for the production of domestic
hot water and can be easily used in solar systems where

B boilers or heating units serve as an integration.

The most important technical features of these solar stor­age cylinders are:

- the accurate study of tank and coil geometry

- internal glazing, bacteriologically inert, to ensure the
max. hygiene of treated water, reduce limescale de-

posits and make cleaning operations easier

- insulation made of expanded polyurethane free from

CFC (chlorouorocarbons)

- a ange for easy cleaning and maintenance of the
anti-corrosion magnesium anode

- solar station enclosed in an insulating casing in EPP
(Polypropylene foam), used also for solar system

washing, lling and emptying as well as for circulator

removal

The main components of the solar station are:

- high-efciency circulator with variable speed (al­ready hard-wired)

- solar regulator (already hard-wired), as indicated in
paragraph "Safety and control devices"

- shut-off valves as non-return valves

- thermometers

- pressure gauge

- tting for connection to a solar expansion tank

- suitable safety device, as indicated in paragraph "
Safety and control devices"

4 SAFETY AND CONTROL DEVICES

Equipment safety and setting are achieved thanks to:

- Safety valve with trigger pressure set at 6 bar;

- Solar Regulator for circulator management/adjust­ment. It manages 9 system diagrams that can be se-

lected. Refer to the specic manual for further details.

5 IDENTIFICATION

The B

IDRA DS FI

solar heaters can be identied by:

Data plate

This lists the technical specications and performance

of the product.

SOLARBOILER

Modell Herstell. Nr.

Artikel Nr.

Baujahr

Maximaler Boilerbetriebsdruck

Anschlussspannung

bar

V-Hz

Boilerfassungvermögen

l

T067659ED02

ERDUNG OBLIGATORISCH - OBLIGATORY GROUND CONNECTION

W

Elektrischer Leistung

m

2

m

2

Leistungsaufnahme obere Rohrschlange

kW

Erzeugung von Brauchwasser

l/1'

[Primärkreislauftemperatur T=80°C]

SOLAR STORAGE CYLINDER

Model Serial number

Code

Year

Power absorbed by top coil (T° primary 80°C)

Domestic Hot Water production - top coil

Maximum working pressure of storage cylinder

Storage cylinder capacity

Electrical consumption

Power supply

obere Rohrschlange[ 35°C]

∆T

Austauschoberfläche obere Rohrschlange
Top coil heat exchange surface area

Austauschoberfläche untere Rohrschlange
Bottom coil heat exchange surface area

Austauschoberfläche untere
Rohrschlange
Bottom coil heat exch. surf. area

Serial number

Model

kW

Power absorbed by top coil

Herstell. Nr.

Leistungsaufnahme obere
Rohrschlange

Modell

m

2

Beretta Caldaie
Via Risorgimento,
1323900 Lecco (LC)

Serial number plate

This species the serial number and model.

b

If these plates or any other means of clearly iden­tifying the product are defaced, removed or lost,
proper installation and servicing may be rendered

difcult.

GENERAL INFORMATION

5

6 SYSTEM LAYOUT

1

7

6

5

2

4

3

9

13

11

10

1

R

2

3

M

UAC

EAF

SB

SV

VE

RB

MB

4

5

6

7

8

12

Mo

P

STORAGE CYLINDER

1

Storage cylinder

2

Top coil

3

Preset for lifting handles (accessory) and/or device
grounding point

4

Bottom coil

5

Flange for heater inspection

6

Insulation

7

Cover

P

Socket

Mo

Guide

UAC

Domestic hot water outlet

EAF

Domestic cold water inlet

SB

Storage cylinder drain

SOLAR STATION

1

Return Valve (solar plant return) with built-in non-re­turn valve

2

Delivery Valve (solar plant delivery) with built-in
non-return valve

3

Outlet temperature gauge

4

Return temperature gauge

5

Insulation

6

Solar controller

7

Display

8

Multidirectional joystick

9

Tap A for system lling/draining

10

Pump

11

Pressure gauge

12

Tap B for system lling/draining

13

Safety valve (6 bar)

M

Solar circuit outlet. Inlet of heat transfer uid coming

from solar collector.

R

Solar circuit return. Outlet of heat transfer uid to-

wards solar collector.

MB

Heater delivery. Outlet of heat transfer uid towards

solar heater.

RB

Heater return. Inlet of heat transfer uid coming from

solar heater.

SV

Safety valve drain

VE

Expansion tank tting

GENERAL INFORMATION

6

7 TECHNICAL SPECIFICATIONS

DESCRIPTION

IDRA DS FI

200 300 430 550

Type of storage cylinder Vertical, glazed
Heat exchanger layout Vertical, with elliptical section
Storage cylinder capacity 208 301 442 551 l

Useful non-solar volume (Vbu)* 68 117 182 175 l
Solar usable volume (Vsol)** 140 184 260 376 l

Diameter of storage cylinder with insulation 604 604 755 755 mm
Height with insulation 1338 1838 1644 1988 mm
Insulation thickness 50 50 50 50 mm
Total net weight 100 122 145 185 kg
Quantity/diameter/length of magnesium anode 1/33/450 1/33/450 1/33/520 1/33/520 mm
Flange internal diameter 130 130 130 130 mm
Diameter/length of sensor sockets 16/180 16/180 16/180 16/180 mm
Top coil water capacity 4,2 4,8 6,0 6,0 l
Top coil heat exchange surface area 0,7 0,8 1,0 1,0 m

2

Bottom coil water capacity 4,2 6,1 8,4 10,8 l
Bottom coil heat exchange surface area 0,7 1,0 1,4 1,8 m

2

Maximum operating pressure of storage cylinder 10 bar
Maximum operating pressure of coils 10 bar
Maximum operating temperature 99 °C
Discharges according to EN 12897:2006 ∆T=45 °C

(ambient 20°C and storage at 65°C)

62 69 75 85 W

Discharges according to UNI 11300 1,38 1,53 1,67 1,89 W/K
Energy class B B B B

PERFORMANCE RELATING TO INTEGRATION COIL

Upper coil continuous efciency (ACS 10-45°C) (Vbu reference volume)

Coil delivery temperature

80°C ∆T 20°C

16,1 23 31,4 31,4 kW

400 572 774 774 l/h

70°C ∆T 20°C

10,3 17 20,7 20,7 kW

247 425 505 505 l/h

60°C ∆T 20°C

6,5 11 15,5 15,5 kW

160 277 375 375 l/h

50°C ∆T 20°C

2,4 5 7 7 kW

57 130 170 170 l/h

Set-up time required to heat the heater to 60°C, referred to the integration coil probe, to the different upper coil
inlet temperatures with a coil outlet/inlet delta (∆) of 20°C (Vbu reference volume)

Upper coil delivery temperature
80°C ∆T 20°C 25 27 24 24 min
70°C ∆T 20°C 33 34 32 32 min
60°C ∆T 20°C 66 65 65 65 min

NL thermal efciency coefcient according to DIN 4708. The NL index, referred to the integration exchanger,
indicates a number of apartments having 3.5 people that can be fully supplied, with a 140 l bathtub and two
other drawing points.

Upper coil delivery temperature

80°C 1,12 1,64 2,2 2,23
70°C 0,86 1,34 1,66 1,69
60°C 0,65 1,04 1,37 1,42

Vbu (*)

The non-solar usable volume indicates the quantity of water (in litres) heated directly by the thermal integration

coil. It is calculated as the volume between the upper part of the heater and the lower part of the thermal inte­gration element (integration coil lower turn).

Vsol (**)

The usable solar volume indicates the quantity of water (in litres) heated directly by the solar coil (placed in the

lower part of the heater) minus the non-solar volume (Vbu).

GENERAL INFORMATION

7

EMPTYING IN 10’

IDRA DS FI

200 300 430 550

PERFORMANCE RELATING TO INTEGRATION COIL

Quantity of domestic water obtained in 10’ with heater pre-heated to 60°C (*) and primary exchanger at the in­dicated delivery temperature, considering an increase of the domestic water temperature of 30°C between inlet
and outlet (according to EN 12897).

Upper coil delivery temperature

80°C 166 260 330 345 l
70°C 138 255 323 340 l
60°C 131 250 308 336 l

PERFORMANCE RELATING TO SOLAR COIL

Quantity of domestic water obtained in 10’ with heater pre-heated to the indicated temperature (**) considering
an increase of the domestic water temperature of 30°C between inlet and outlet (according to EN 12897).

Temperature of accumulation tank lower part

70°C 374 438 659 863 l
60°C 284 375 531 675 l
50°C 205 310 390 485 l

DESCRIPTION SOLAR STATION TECHNICAL DATA

Safety valve calibration pressure 6 bar
Maximum operating temperature 110 °C
Power supply 230~50 V-Hz

Min/max electrical current draw 0,08 ÷ 0,58 A
Min/Max power consumption 5 ÷ 63 W

Pressure drops

TOP COIL

PRESSURE DROP (mbar)

400

300

200

500

100

0

0 1000 2000 3000 4000

300

200

430
550

FLOW RATE (l/h)

Useful head available

BOTTOM COIL

USEFUL HEAD AVAILABLE (mbar)

700

650

600

0 400200 300 500100

700

650

550

450

500

600

400

350

300

0 400 600 800 1000200 1200 1400

200

300
430

550

200

300
430

550

FLOW RATE (l/h)

Values referred to a mix of water and 30% glycol.

The circulator speed is controlled through PWM signal and

varies according to the thermal gradient between solar col­lectors and storage.

Pay attention to the system overall ow resistance (ex­changer, solar collectors and pipes) at the maximum ow

rate conditions provided.

8

INSTALLATION

8 UNPACKING THE PRODUCT

B

IDRA DS FI

solar heaters are supplied in a single

package on a wooden pallet.

The boiler comes with a solar station supplied with solar

regulator already wired to the high-efciency circulator,
and two non-wired probes to be inserted in the boiler sock-

ets.
The following items are delivered in a plastic bag inside the

packaging:

- Instruction manuals

- Bar code label

- Hydraulic test certicate

- Energy label (to be applied to device upon installa­tion)

- No. 1 solar probe PT1000

- No. 2 probes NTC.

b

The instruction manual is an integral part of the so-

lar storage cylinder. Once located, read it thoroughly
and keep it safe.

b

For handling operations, thoroughly follow the in-

structions on device package label.

9 ACCESS TO THE SOLAR STATION

To access the solar station it is necessary to remove the
solar regulator covering (1) and then the front insulation (2).

1

2

10 PLACE OF INSTALLATION

B

IDRA DS FI

storage cylinders can be installed in any
room where there is no specic requirement for an electri­cal protection rating higher than IP X0D.

≥ 0,3 m

≥ 0,8 m

≥ 0,3 m

≥ 0,8 m

≥ 0,7 m

NOTE:

the above-indicated dimensions are recommended

for a correct maintenance and access to the device.

b

When installing the boiler, allow sufcient space

around it to access all safety and control devices and
to permit easy maintenance.

11 INSTALLATION IN OLDER

SYSTEMS AND SYSTEMS
REQUIRING MODERNISATION

When installing B

IDRA DS FI

storage cylinders in old

systems or systems requiring modernisation, always per­form the following checks.

- Make sure that the system is tted with safety and
control devices in accordance with applicable legis­lation and standards

- Make sure that the central heating circuit has been

ushed out to remove all sludge and lime scale, and

has been vented and seal tested

- Make sure that a suitable water treatment system is

installed if the quality of the supply/recirculation water

so demands (refer to the reference values listed in
the table alongside).

12 WATER QUALITY

REQUIREMENTS

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

The values above ensure proper operation of the system.

Refer to the limit values specied in the current standards

and regulations on the installation site.

Installation

INSTALLATION

9

13 WATER CONNECTIONS

N

C

E

D

F

G

H

I

L

M

B

AD

UAC

MC

Psc

RL

RC

Psr

EAF

A

DF

VE

M R

190mm

100mm

DESCRIPTION

IDRA DS FI

200 300 430 550

VE Expansion tank tting 1/2” M Ø
UAC Domestic hot water outlet 1” M Ø
MC Outlet from boiler 1” M Ø
RC Return to boiler 1” M Ø
M Outlet from solar collector 1” M Ø
R Return to solar collector 1” M Ø
RL DHW recirculation 1” M Ø
EAF (SB) Domestic cold water inlet 1” M Ø
Psc Diameter/length of boiler sensor socket 16/180 mm
Psr Diameter/length of solar controller sensor socket 16/180 mm

AD Quantity/diameter/length of magnesium anode 1/33/450 1/33/450 1/33/520 1/33/520 mm
DF Flange internal diameter 130 130 130 130 mm
A 1120 1420 1270 1570 mm
B 171 171 208 207 mm
C 403 393 427 443 mm

D M8 threaded inserts for grounding point/accessory

handles connection

700 700 700 700 mm

E 738 903 824 1088 mm
F 878 1113 964 1328 mm
G 953 1233 1064 1428 mm
H 1029 1323 1174 1538 mm
I 1098 1438 1289 1653 mm

L 1170 1670 1440 1784 mm
M 1338 1838 1644 1988 mm
N Ø 604 Ø 604 Ø 755 Ø 755 mm

b

It is recommended to install shut-off valves at domestic water inlet and outlet.

b

Check the efciency of the seals when lling/relling the storage cylinder.

b

Any electric junction between probe cable and extensions for the connection to the electric panel must be soldered
and protected with a sheath or a suitable electric insulation.

INSTALLATION

10

14 TYPICAL WATER SYSTEM

SCHEMATICS

The diagram below shows the solar regulator default set­ting.

IMP 1

1

Please refer to the instruction manual supplied with the so­lar regulator for any system setup and further details.

15 WIRING DIAGRAMS

CN4

CN3

M4

M3 M2

M1

321 4 5 6

CN6

F

AE

230V ~ 50Hz

ANGD U1U2

N

L

(B)(A)(S6)S4(S5)S3S2S1

S1 S2 S3 CS4

AE

Power supply (connections to be made by

the installer)

S1

Collector 1 temperature probe (connections

to be made by the installer)

S2

Storage system lower temperature probe

(connections to be made by the installer)

S3

Storage system upper temperature probe

(connections to be made by the installer)

S4

Option probe (not supplied)

M1-M4

Terminal strip

C

Pump

CN6

PWM connector

F

Cable guide

16 ELECTRICAL CONNECTIONS

b

The following is mandatory:

- have an omnipolar magneto-thermal circuit breaker

and a disconnecting switch compliant with the pre­vailing standards of the installation country

- respect the polarity of the L1 (Phase) - N (Neutral)

connections

- use cables with insulation and cross section con-

forming to applicable standards (minimum cross
section 1.5 mm2)

- refer to the wiring diagrams in this manual for all

electric operations

- make sure the appliance is connected to an efcient

ground (earth).

a

It is strictly forbidden to use pipes of any kind to

ground the appliance.

The manufacturer is not responsible for any damage
caused by failure to earth connect the device and fail­ure to comply with what is indicated in the wiring dia­grams.
Refer to the manual supplied with the solar controller
for details of all electrical connections, programming,

etc..

The solar regulator is provided already wired except for the
power supply cable and the temperature probes.

To make electrical connections, undo screw (1) on cover

and remove cover from solar regulator.

1

P

INSTALLATION

11

1

234

5

0 6

FPs

Pa

Is

Ia

CN3

CN4

CN6

321 4 5 6

Psc

Psr

Ua

C

S1

Us

C

C Cable duct (not supplied)

Sensor connections

- Route probe cables through the cable guides (F), the
fairleads (Ps), the passages on the insulation (Is), the

solar station outlets (Us/Ua) and connect them to ter­minal board M4 of solar regulator (terminals S1-S2­S3-S4) making reference to the instructions provided
in the specic regulator manual.

Upon connection, or should it be necessary to increase
probe cable length, refer to these remarks:

- Absolutely avoid laying probe cable together with
mains power cables and/or AC cables

- Absolutely avoid routing cables close to strong mag-

netic elds

- Avoid any cable jointing as much as possible; solder
and duly insulate any indispensable jointing

- Use twisted and shielded wires

- Use cables having a cross-section of over 0.5 mm

2

Solar controller power connections

- Route the supply cable through the cable guides (F),
the fairleads (Pa), the passages on the insulation (Ia),

the solar station outlets (Ua) and connect it to termi­nal board M1 of solar regulator (terminals L-N-GND)
making reference to the instructions provided in the
specic regulator manual.

Once electrical connections are completed, fasten cables

using the guides supplied, close regulator cover and solar
station protection housing.

INSTALLATION

12

17 SYSTEM FLUSHING

Before lling the system with mixture of water and glycol, it
is necessary to ush the pipes of the solar system to elimi­nate all residues of uid or scale.

Proceed as follows.

- Turn handle on valve (VR) clockwise

- Open taps (A) and (B) on the return tube

- Flush water in through the cock (B) and wait for it to

come out of the cock (A)

- Allow water to come out for at least 30 seconds

- Turn handle on valve (VR) counter clockwise

- Close taps (A) and (B).

b

During system ushing, pay attention to water com­ing out of the taps as vapour could be released with

risk of burns or scalds. Use suitable personal protec­tive equipment.

VRVM

B

90°

0°

VR

90°

0°

VM

Position of the knob of the

valves

VM - VR

Flow in single

direction

(non-return valve

function)

Flow

stopped

A

b

If copper piping has been used and joints have been
hot brazed, ush out the system to remove any braz­ing residues. Seal test the system after you have

ushed it out.

b

The solar circuit must be immediately lled with a
mixture of water and glycol, that avoids freezing and

corrosion.

INSTALLATION

13

18 SYSTEM FILLING COCK

Before lling the system:

- Cut power off to the solar station and to the connect­ed integration system, by setting the system's main

switch and the device's main switch to OFF

b

Always use a mixture of water and glycol suitable for
solar applications. Choose the mixture according to
the minimum temperature that can be reached at the
installation site and to the maximum service tempera­ture of solar collectors. For further information, please
refer to the glycol safety data sheet.

When using glycol not pre-mixed:

- Do NOT part ll the circuit with pure glycol then add
water later.

- Ensure that lling water characteristics comply with

prevailing regulations; if that is not so, lling water
must be treated. Use portable treatment systems, for

instance. In particular, when chlorine content is very
high (> 50ppm) you must use distilled water for the
mixture.

B

VM

A

VR

Mixture

of glycol

and water

PC

PC Heat transfer uid lling pump

To ll the system, proceed as follows:

- Connect the lling pump (PC) as shown

- Turn handle on valve (VR) clockwise

Open taps (A) and (B) on the return tube

- Open manual degassing tap and any bleeder valve,

located at the highest points of the system, and keep
them open throughout the lling procedure.

- Pump the heat transfer uid around the circuit with an

external lling pump until all air bubbles have been

eliminated. Close the manual bleed valve and any
vent valves opened previously.

- Turn handle on valve (VR) counter clockwise

- Temporarily raise the pressure in the system to 4 bar.

- Start up the system for about 20 minutes.

- Repeat air bleeding operation until system is com­pletely free of air bubbles.

- set the system pressure.

- Close taps (A) and (B).

b

The set pressure must ensure that the one measured
at the solar collectors is positive with respect to the

ambient one (avoid depression in the solar eld) and

must be set considering both the safety valve open­ing pressure (6) and the solar expansion reservoir
pre-charge pressure. To set the system pressure cor­rectly, refer to the design manual.

a

Do not ll the system in bright, sunny conditions or if

the collectors are hot.

b

Use a manual bleed valve, which should be installed

at the highest point in the system, to ensure that all air
bubbles have been eliminated from the circuit.

19 DEVICE CLEANING AND

MAINTENANCE

b

Service the system at least once a year and carry out

the inspections specied in the relevant manual.

The following operations must be exclusively performed by
Technical Assistance Centre.

19.1 Checking the seals

After commissioning, check hydraulic tting sealing. Make
sure there is no leakage close to electric components to

avoid short-circuits.

19.2 External cleaning

Clean the outside of the storage cylinder with a soft cloth
damped in soapy water.
Use a dry cloth to clean the insulation and the solar regula­tor display to remove any dust.

a

Do not use abrasive products, petrol or triethylene.

14

COMMISSIONING AND MAINTENANCE

20 INTERVENTIONS ON THE

HYDRAULIC SYSTEM

20.1 Draining the system

- Connect a rubber hose to taps (A) and (B)

- Connect the opposite end to a vessel

- Open system drain taps and allow full drainage

- Close system drain taps and remove the rubber hose

- The exhausted heat transfer uid must be disposed
of according to the prevailing regulations, pursuant
to the instructions provided in the safety data sheet
supplied with the glycol.

20.2 Disassembling the circulator

b

Remove the circulator when system has cooled down.

Before removing circulator (C):

- Cut power off to the solar station and to the connect­ed integration system, by setting the system's main

switch and the device's main switch to OFF

- Disconnect circulator power by removing connectors
(D) and (E)

- Move away any wiring and electric devices below to

protect them against any leakage of heat transfer uid

- Close valves (VR) and (VM) by turning handle clock­wise by 90°

- Open taps (A) and (B) and drain the solar circuit

- Loosen ring nuts (H1) and (H2) and remove circulator
(C).

C

H2

H1

B

VM VR

E

D

A

Reverse the above steps to t the new pump.
Fill the solar circuit as described in paragraph "System ll­ing cock".

21 RECYCLING AND DISPOSAL

The device is primarily composed of:

Material Component

steel structural work

metal materials tubes, circulator

ABS (acrylonitrile-butadi-

ene-styrene)

solar regulator casing,

covering and covers

EPP (polypropylene foam) solar station insulation

PU (polyurethane) boiler insulation

synthetic rubber pipe insulation

electrical and electronic

components

cables and wiring, solar

regulator, circulator

At the end of the device's useful life, these components
must be separated and disposed of according to current
regulations in the country of installation.

Commissioning and maintenance

15

END USER

END USER INSTRUCTIONS

Refer to the GENERAL SAFETY INFORMATION and PRECAUTIONS section for safety-related information.

22 START-UP

The heater commissioning must be performed by Techni­cal Assistance Centre personnel.

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

- Check that the system main switch and the control

main switch are active "ON".

b

For further information concerning the solar regula­tor, refer to the dedicated manual supplied with the
product.

End user

23 TEMPORARY SHUTDOWN

To reduce to the environmental impact and save energy,

in case of brief absences, week-ends, short trips, etc., and

with external temperatures above 0°C, set the heater tem­perature control, where available, to the minimum value.

b

If the temperature to which the heater is exposed can

fall below 0°C (frost hazard), perform the operations

described in paragraph "Preparing for extended pe­riods of disuse".

24 PREPARING FOR EXTENDED

PERIODS OF DISUSE

If the storage cylinder is not going to be used for an ex-

tended period of time, ask the manufacturer’s Technical
Assistance Centre to make the system safe.

25 EXTERNAL MAINTENANCE

Clean the outside of the storage cylinder with a soft cloth
damped in soapy water.
Use a dry cloth to clean the insulation and the solar regula­tor display to remove any dust.

a

Do not use abrasive products, petrol or triethylene.

20122522 - Rev. 3 (06/17)

Via Risorgimento, 23 A
23900 - Lecco (LC)

www.berettaboilers.com

The manufacturer strives to continuously improve all products. Appearance, dimensions, technical

specications, standard equipment and accessories are therefore liable to modication without notice.