INSTALLATION MANUAL

USER MANUAL

SOLAR

STORAGE

CYLINDER

IDRA MS 150 FI

SOLAR

2

RANGE

MODEL

IDRA MS 150 FI

CODE

20072888

ACCESSORIES

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

Dear Customer,

Thank you for choosing a

B

solar storage cylinder. You have purchased a modern, quality product that is designed to give dependable and safe service and to provide comfort in the home for many years to come. Arrange for your

B

solar storage cylinder to be serviced regularly by an authorised

B

service centre. Their personnel are specially trained to keep your solar storage cylinder efficient and cheap to run.

B

service centres also stock any original spare parts that might be required.

This manual contains important instructions and precautions that must be observed to ensure the trouble-free installation and efficient functioning of your

B

solar storage cylinder.

Please accept our renewed thanks for your purchase.

Beretta

B

storage cylinders conform to DIN 4753-3 and UNI

EN 12897 standards.

b

This product must only be used for the purpose for which it is designed and made, as specified by

B

.

B

declines all responsibility, contractual or other, for damage to property or injury to persons or animals caused by improper installation, adjustment, maintenance or use.

ENGLISH

CONTENTS

GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1 General Safety Information . . . . . . . . . . . . . . . . . . . 4

2 Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

3 Description of the appliance . . . . . . . . . . . . . . . . . . 5

4 Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

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

6 Technical specifications . . . . . . . . . . . . . . . . . . . . . 7

7 Water circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

8 Location of sensors . . . . . . . . . . . . . . . . . . . . . . . . . 9

9 Overall dimensions and water fittings . . . . . . . . . . 10

INSTALLER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

10 Unpacking the product . . . . . . . . . . . . . . . . . . . . . 11

11 Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

12 Place of installation . . . . . . . . . . . . . . . . . . . . . . . . 12

13 Installation in older systems and systems requiring modernisation . . . . . . . . . . . . . . . . . . . . 12

14 Preparing for initial startup . . . . . . . . . . . . . . . . . . 12

TECHNICAL ASSISTANCE CENTRE . . . . . . . . . . . . 13

15 Initial startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

16 Checks during and after initial start-up. . . . . . . . . 14

17 Temporary shutdown. . . . . . . . . . . . . . . . . . . . . . . 15

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

19 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

20 Cleaning and removing internal components . . . . 16

21 Recycling and disposal. . . . . . . . . . . . . . . . . . . . . 16

22 Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . 17

END USER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

23 Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

24 Temporary shutdown. . . . . . . . . . . . . . . . . . . . . . . 18

25 Preparing for extended periods of disuse. . . . . . . 18

26 External maintenance . . . . . . . . . . . . . . . . . . . . . . 18

The following symbols are used in this manual: b a

CAUTION! =

Identifies actions that require caution and adequate preparation.

STOP! =

Identifies actions that you MUST NOT do.

This manual, Code

- Rev.

comprises pages.

This manual, Code 20073550 - Rev. 1 (03/14) comprises 20 pages.

3

GENERAL

4

1 GENERAL SAFETY INFORMATION 2 PRECAUTIONS

b b b b b b b b b 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.

This product must be installed by a legally qualified heating engineer. On completion of the installation, the installer must issue the owner with a declaration of conformity confirming that the installation has been completed to the highest standards in compliance with the instructions provided by

B

in this instruction manual, and that it conforms to all applicable laws and standards.

This product must only be used for the purpose for which it is designed and made, as specified by

B

.

B

declines all responsibility, contractual or other, for damage to property or injury to persons or animals caused by improper installation, adjustment, maintenance or use.

The product must be serviced at least once a year.

Servicing must be arranged in advance with the

B

Technical Assistance Centre.

All servicing and repairs must be performed by a qualified heating engineer.

If water leaks from the storage cylinder, turn off the water supply and contact

B

’s Technical Assistance Centre or a qualified heating engineer immediately.

If the solar storage cylinder 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 fitted) and at the mains power switch.

-Drain the central heating circuit and domestic hot water circuit if there is any risk of freezing.

Anti-freeze (propylene glycol) is available separately and must be mixed with water in a percentage varying from 30% to 50% as instructed in the installation and maintenance manual for the

B

solar collectors.

Only fill the solar collector (primary) circuit with water and glycol premixed in the percentages specified in the

B

installation and maintenance manual.

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.

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 following all applicable occupational safety standards.

a

Do not touch the storage cylinder when barefoot or wet if it has any electrical accessories connected to it.

a

Never clean or service the storage cylinder without first turning the mains power switch OFF to disconnect all electrical accessories (if fitted) from the mains electricity supply.

a

Never pull, disconnect, or twist any electrical cables coming from the appliance even if it is disconnected from the mains electricity supply.

a

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

a

If the pressure in the solar collector circuit drops, do not top up with water alone, since this increases the risk of damage from freezing.

a

Do not use connections or safety devices or fittings

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

a

Do not allow children or infirm 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.

General

GENERAL

3 DESCRIPTION OF THE

APPLIANCE

B

IDRA MS FI

solar storage cylinders are designed for installation in domestic hot water production systems heated by

B

solar collectors.

4 IDENTIFICATION

B

IDRA MS FI

storage cylinders are identified by:

Data plate

This lists the technical specifications and performance of the product.

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

- The storage cylinder and coil are specially designed and shaped for optimum performance in terms of stratification, heat exchange and replenishment times

- The double vitrified cylinder lining is bacteriologically inert for maximum hygiene, reduced lime scale deposits and easy cleaning

- CFC-free polyurethane insulation and an elegant external casing reduce heat loss and improve efficiency

- Temperature sensor and power cables are all internally routed

- A flange is provided for easy cleaning and maintenance of the anti-corrosion magnesium anode.

SOLAR STORAGE CYLINDER

Model

Code

Beretta Caldaie

Via Risorgimento, 13

23900 Lecco (LC)

Serial number

Year

Maximum absorbed power [Primary T = 80°C]

Specific top flow rate [∆T 35°C]

Bottom maximum power consumption [Primary T = 80°C]

Specific bottom flow rate [∆T 35°C]

Maximum working pressure of cylinder

Storage cylinder capacity

Electrical consumption

Power supply

Obligatory ground connection kW l/1' kW l/1' bar l

W

V-Hz

B

IDRA MS FI

storage cylinders are equipped with a special solar controller and can easily be integrated in solar heating systems in which

B

boilers or water heaters provide supplementary heat.

Serial number

Model

Beretta Caldaie

Via Risorgimento, 13

23900 Lecco (LC)

Maximum absorbed power

Bottom max.

power consumption kW kW

Serial number plate

This specifies 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 difficult.

5

GENERAL

5 SYSTEM LAYOUT

6

5

6

7

1

2

3

4

12

11

10

9

15

16

13

14

31

30

29

28

27

26

25

24

20

19

23

21

22

8

17 18

12

13

14

15

16

7

8

9

10

11

1

2

3

4

5

6

17

18

19

Magnesium anode

Storage cylinder

Temperature gauge

Sleeve for electric heating element (not supplied)

Cylinder inspection flange

Flange cover

Coil

Sensor socket

Insulation

Valve group

Cover

Plug for anode inspection and lifting

Outlet temperature gauge

Outlet valve M

Solar controller

Outlet pipe to coil

Return pipe from coil

Sensor/power cable entrance

Flow meter (l/min)

26

27

28

29

30

31

20

21

22

23

24

25

Flow regulator

Cock B

Pump

Pressure gauge

Cock A

Fitting for expansion vessel

Safety valve outlet

Safety valve (6 bar)

Return valve R

Fitting for pipe to solar collector

Return temperature gauge

Fitting for pipe from solar collector

GENERAL

6 TECHNICAL SPECIFICATIONS

(

DESCRIPTION

Type of storage cylinder

Storage cylinder layout

Heat exchanger layout

Storage cylinder capacity

Diameter of storage cylinder with insulation

Height with insulation

Insulation thickness

Diameter/length of first magnesium anode

Flange diameter (external/internal)

Diameter/length of sensor sockets

Sleeve for electric heating element (not supplied)

Coil water capacity

Coil heat exchange surface area

DHW production

∆T 35°C)

NL performance factor (*)

Heat loss in 24h

Maximum working pressure of coils

Maximum working pressure of storage cylinder

Maximum operating temperature

Net weight with insulation

Primary coil at 80°C

Primary coil at 88°C

IDRA MS 150 FI

Vitrified

Vertical

Vertical

150

605

1055

50

33/450

183/130 - 120

16/175

1 ½” F

4,8

0,78

585

645

1,7

2,4

10

10

99

72 l mm mm mm mm mm mm

Ø l m

2 l/h l/h kWh/24h bar bar

°C kg

(*) NL performance factor calculated according to DIN 4708, with primary circuit at a temperature of 80-65°C and water in storage cylinder at 65°C.

Pressure drops COIL

14

12

10

8

6

4

2

0

PRESSURE DROP (mbar)

20

18

16

0 100 200 300 400 500 600 700 800 900 1000

FLOW RATE (l/h)

Tests performed with a 30% glycol/water solution.

Residual head of valve group fitted to

B

IDRA MS 150 FI storage cylinders

200

150

100

50

RESIDUAL HEAD (mbar)

450

400

350

300

250

I

0

0 200 400 600

II

III

800 1000

FLOW RATE (l/h)

7

GENERAL

7 WATER CIRCUIT

TYPICAL WATER SYSTEM SCHEMATIC

Solar regulator

3

4

UAC

SCo

2

M

1 1

R

8

SB1

17

19 10

PR

16

10

10

10

11

16

5

6

M

7

°C

PS

8

9

12

13

10

10

Water control system

7

10

10

15 14

10

EAF

9

8

14

15

16

17

9

10

11

12

13

4

5

6

7

8

1

2

3

Solar collector

Collector temperature sensor socket

Manual bleed valve

Vent cock

Vent valve

Pressure gauge

Safety valve

Drain

Expansion vessel

Disconnect valves

Temperature gauge

Flow regulator

Flow meter

Pressure reducer

Water softener filter

Non-return valve

Thermostatic mixer valve

18

19

Solar storage cylinder

DHW recirculation temperature sensor

UAC

Domestic hot water outlet

EAF

Domestic cold water inlet

M

R

Collector outlet

Collector return

PR

DHW recirculation pump

PS

Solar collector circuit pump

SB1

Storage cylinder bottom temperature sensor

SCo

Collector probe

Note! The above schematic is purely indicative.

b b b b b

B

IDRA MS FI

storage cylinders are delivered without a boiler heating pump. A suitably rated pump must be provided and installed separately. Flow rate from the solar collector circuit depends on the type and number of collectors installed. For further information, consult the manual for the collectors.

The domestic hot water system MUST INCLUDE an expansion vessel, safety valve, automatic vent valve and storage cylinder drain cock.

Safety valves must be connected to a suitable collection and drain system. The manufacturer declines all responsibility for damage caused by water escaping from safety valves.

The choice of system components and the method of their installation are left up to the heating engineer installing the system. Installers must use their expertise to ensure proper installation and functioning in conformity to all applicable legislation.

Circuits filled with anti-freeze must be fitted with water disconnectors.

GENERAL

8 LOCATION OF SENSORS

B

IDRA MS FI

storage cylinders are equipped with dedicated sockets for the storage cylinder TEMPERATURE GAUGE or TEMPERATURE SENSOR.

b

The installer is responsible for making all necessary connections to the boiler and solar collectors. Installers must use their expertise to ensure proper installation and functioning in compliance with all applicable legislation.

A

B

Psr

C

A

B

Temperature sensor socket

Temperature sensor

C

Guide

Psr

Solar controller temperature sensor socket b

Joins between temperature sensor cables and control panel extension cables must be soldered and protected by sheaths or other forms of electrical insulation.

9

GENERAL

9 OVERALL DIMENSIONS AND WATER FITTINGS

TR

RE

AD

M R

(*)

UAC

AD

ICP

RL

DSA

Psr

EAF (SB)

D E

(*) Hoses

10

I

H

F

G

L

C

D

A

B

E

DESCRIPTION

UAC Domestic hot water outlet

M Outlet from solar collector

R

RL

Return to solar collector

DHW recirculation

EAF (SB) Domestic cold water inlet (storage cylinder drain)

Psr

RE

AD

TR

Diameter/length of solar controller sensor socket

Sleeve for electric heating element (not supplied)

Diameter/length of magnesium anode

Temperature gauge

DSA Sensor/power cable entrance

ICP Rear cable entrance b b

We recommend that you install isolating valves in the outlet and return lines.

Check the efficiency of the seals when filling/refilling the storage cylinder.

IDRA MS 150 FI

1” F

1” M

1” M

¾” F

1” F

16/175

1 ½” F

33/450

170

360

250

895

1055

800

590

335

605

825 mm mm mm mm

Ø mm mm mm mm mm mm

Ø

Ø

Ø

Ø

Ø mm mm mm

INSTALLER

10 UNPACKING THE PRODUCT

B

IDRA MS FI

storage cylinders are delivered in a single package, protected by a cardboard box on a wooden pallet.

The following items are delivered in a plastic bag inside the packaging:

- Instruction manual

- Spare parts catalogue

- Hydraulic test certificate.

If suitable equipment is not on hand to lift the storage cylinder off the pallet using the eyebolt, proceed as follows.

- Place a platform of about half the height of the pallet near the storage cylinder. Make sure the platform is able to support the weight of the storage cylinder.

- Remove the brackets (1) then carefully rotate and slide the storage cylinder off the pallet on to the platform.

- Make sure that the storage cylinder is perfectly stable, and then remove the pallet.

- Carefully rotate and slide the storage cylinder off the platform on to the floor.

- Remove the platform. Position the storage cylinder as required.

H

A

B

A

B

H

IDRA MS 150 FI

880

1040

1280 mm mm mm

11 HANDLING

Make sure that any lifting equipment is of adequate capacity to lift and move the storage cylinder. Remove the brackets (1) to free the storage cylinder.

To lift the storage cylinder, remove the plug (2) and insulation (3) and screw an eyebolt (Ø 10 mm) of suitable capacity for the weight of the cylinder into the hole (4).

Adjust the feet to ensure that the storage cylinder is perfectly level.

17

11

2

3

1

1

4 b

Wear suitable personal protective equipment and use suitable safety devices.

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.

1

Installer

INSTALLER

12 PLACE OF INSTALLATION

B

IDRA MS FI

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

b

Respect the minimum specified installation distances to ensure correct installation and access for maintenance.

14 PREPARING FOR INITIAL

STARTUP

- Connect the safety valve drain to a pipe (T) to avoid burns from expelled fluid and to permit the heat transfer fluid to be recovered

- Connect up an expansion vessel (E) designed for use in solar water heating systems

- Connect the pump and the sensors to the solar controller (if provided) as instructed in the manual supplied with the controller.

T

≥ 0,3 m

≥ 0,6 m

≥ 0,4 m

≥ 0,4 m

12

13 INSTALLATION IN OLDER

SYSTEMS AND SYSTEMS

REQUIRING MODERNISATION

When installing

B

IDRA MS FI

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 central heating circuit has been flushed out to remove all sludge and lime scale, and has been vented and seal tested

- Make sure that a suitable water treatment system is installed if the quality of the supply/recirculation water so demands. (Refer to the reference values listed in the table alongside) pH

REFERENCE VALUES

Electrical conductivity

Chlorine ions

6-8 less than 200 μS/cm (25°C) less than 50 ppm

Sulphuric acid ions

Total iron

Alkalinity M

Total hardness

Sulphur ions

Ammonia ions

Silicon ions less than 50 ppm less than 0.3 ppm less than 50 ppm less than 35°F none none less than 30 ppm

E

TECHNICAL ASSISTANCE CENTRE

FLUSHING THE SYSTEM

- Turn the knobs of the outlet and return valves (M) and

(R) fully anti-clockwise

- Close the flow regulator (V) (so that the screw slot is horizontal)

- Open the cocks (A) and (B) on the return valve group

- Flush water in through the cock (B) and wait for it to come out of the cock (A)

- Close the cocks (A) and (B) and re-open the flow regulator (V) (so that the screw slot is vertical).

PREMIXING WATER + GLYCOL

Glycol anti-freeze is supplied separately and must be premixed with water in a suitable container before being used to fill the system. For example, a mix of 40% glycol and

60% water provides anti-freeze protection down to a temperature of -21°C.

M

Outlet group

Return group

R

Pump

B

Anti-freeze

50%

Temperature

-32 °C

Density

1.045 kg/dm

3

40% -21 °C 1.037 kg/dm

3

30% -13 °C 1.029 kg/dm

3 b

The propylene glycol supplied is specially formulated for solar collector applications and remains fully efficient throughout the -32 to +180°C temperature range. It is also non-toxic, biodegradable and biocompatible.

b

Do NOT part fill the circuit with pure glycol then add water later.

b b

Do not use automatic or manual filling systems.

If the water supply is highly chlorinated, use distilled water to prepare the glycol/water mix.

15 INITIAL STARTUP

A

V

position

CLOSED

FILLING THE SYSTEM

1 Turn the knobs of the outlet and return valves (M) and

(R) fully anti-clockwise

Close the flow regulator (V) (so that the screw slot is horizontal)

2 Open the manual bleed valve at the highest point in the system and keep it open throughout the filling operation

3 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 at the highest point in the system.

4 Temporarily raise the pressure in the system to 4 bar

5 Start up the system for about 20 minutes

6 Bleed the system again from step 2 until all the air has been removed

7 Set the pressure in the system to 3 bar

8 Close the cocks (A) and (B) and re-open the flow regulator (V) a

Do not fill the system in bright, sunny conditions or if the collectors are hot.

scale in

l/min.

position

OPEN

13

b

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

b

Fill the solar collector with glycol/water mix immediately after flushing it out, because flushing water may remain trapped in the circuit (with a consequent risk of freezing).

Technical Assistance Centre

TECHNICAL ASSISTANCE CENTRE

- Check that the solar collector circuit has been properly bled

Position of the knob of the valve R - M

Flow stopped

90° 90°

14

0°

M

Upward flow only

(non-return valve function)

Outlet group

Return group

R

0°

- Check that the pressure of the system when cold is approximately 3 bar

- Check that the safety valve operates at 6 bar

- Check that all pipes in the water circuit have been insulated in conformity to relevant standards.

V

A

Pump

Heat transfer fluid filling pump

B

1

2

0

3

4

6

5

Anti-freeze mix

16 CHECKS DURING AND AFTER

INITIAL START-UP

Once the system has been started up, perform the following checks.

- Check that the flow rate in the solar collector circuit is equivalent to 30 l/h for each m

2

of collector area

Provided all the above checks have been completed successfully, re-start the boiler and the storage cylinder and check the temperature settings and domestic hot water draw rate.

TECHNICAL ASSISTANCE CENTRE

17 TEMPORARY SHUTDOWN

If you are going away for a short period of time like a weekend or a short holiday, etc., and outdoor temperatures are going to remain above ZERO, proceed as follows.

- Adjust the storage cylinder thermostat to its minimum setting.

b

If outdoor temperature may drop below ZERO (risk of freezing) perform the operations described in the

“Preparing for extended periods of disuse” section.

REPLACING THE PUMP

Perform the following operations before starting work to replace the pump (C).

- Switch the electricity supply to the storage cylinder’s valve group and to any associated boiler OFF at the main switch and at the control panel

18 PREPARING FOR EXTENDED

PERIODS OF DISUSE

If the storage cylinder is not going to be used for an extended period of time, perform the following operations.

- Cover the solar collectors with suitable protection

- Switch the electricity supply to the storage cylinder’s valve group and to any associated boiler OFF at the main switch and at the control panel

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

- Close the flow regulator (V)

- Turn the valve knob 90° clockwise to close the valve

(R)

- Unscrew the ring nuts H1 and H2 and remove the pump (C).

Reverse the above steps to fit the new pump.

M

Outlet group

Return group

R

b

Drain the domestic hot water circuit if there is any risk of freezing.

Contact your local

B

Technical Assistance Centreif you encounter any problems in completing the above procedure.

19 MAINTENANCE

Scheduled maintenance is essential for the safety, efficiency and long working life of your storage cylinder. Proper maintenance also reduces energy consumption and ensures reliability over time. Have your storage cylinder serviced either by the manufacturer’s Technical Assistance Centre or by a qualified heating engineer at least once a year.

Perform the following operations before beginning any maintenance.

- Switch the electricity supply to the storage cylinder’s valve group and to any associated boiler OFF at the main switch and at the control panel

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

- Drain the storage cylinder’s DHW (secondary) water circuit.

H1

H2

V

C

15

TECHNICAL ASSISTANCE CENTRE

20 CLEANING AND REMOVING

INTERNAL COMPONENTS

EXTERNAL CLEANING

Clean the outside of the storage cylinder with a soft cloth damped in soapy water. To remove stubborn marks, use a cloth damped in a 50% mix of water and denatured alcohol or a suitable cleaning product. Dry the storage cylinder after cleaning it.

a

Do not use abrasive products, petrol or triethylene.

b

Tighten the bolts (7), proceeding diagonally around the flange to apply pressure uniformly around the seal.

- Fill the storage cylinder’s DHW (secondary circuit) and check that there are no leaks from any of the seals

- Check the performance of the storage cylinder.

9

INTERNAL CLEANING

8

7

6

Removing and checking the magnesium anode

- Remove the plug (1) and insulation (2), and use a suitable wrench to unscrew the anode holder (3)

- Check the magnesium anode for wear and replace it if necessary.

4

5

On completion of cleaning, follow the above steps in the reverse order to refit all removed parts.

NOTE: Tighten the anode plug to a torque of 25-30 Nm.

1

2

3

21 RECYCLING AND DISPOSAL

At the end of its useful working life, do not abandon the storage cylinder in the environment, but dispose of it through the proper channels in accordance with applicable legislation.

16

Cleaning inside the storage cylinder

- Remove the screws (4)

- Remove the flange cover (5)

- Remove the insulation (6)

- Unscrew the bolts (7) and remove the cover (8)

- Remove the seal (9)

- Clean inside the storage cylinder and remove any residues through the access hole.

b

Check the seal for wear and replace it if necessary.

On completion of cleaning, follow the above steps in the reverse order to refit all removed parts.

TECHNICAL ASSISTANCE CENTRE

22 TROUBLESHOOTING

FAULT CAUSE SOLUTION

The storage cylinder functions incorrectly or irregularly

The storage cylinder loses a lot of heat overnight

There is air in the circuit

The flow rate is too low or too high

Pressure is too low

There is lime scale or sludge in the cylinder

Solar controller malfunction

There is natural circulation to the collectors

-Bleed the circuit

-Check the flow rate of the collector circuit

-Check that circuit pressure is approximately 3 bar when cold

-Check and clean as necessary

-Solar controller malfunction

-Make sure that the non-return valve is efficient and closes properly. Replace if necessary

17

END USER

END USER INSTRUCTIONS

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

18

23 START-UP 24 TEMPORARY SHUTDOWN

The storage cylinder must be put into service for the first time by personnel from the manufacturer’s Technical Assistance Centre.

Under certain circumstances, such as after long periods of disuse, the user may need to re-start it without involving the

Technical Assistance Centre. Before doing so, perform the following checks and operations.

- Check that the supply cocks in the domestic water circuit are all open

- Switch the electricity supply ON at the mains power switch and at control panel switch (if fitted).

To reduce impact on the environment and save energy, before leaving for the weekend or a short break, etc., provided outdoor temperatures will remain above ZERO, simply adjust the storage cylinder’s thermostat to its minimum temperature.

b

If outdoor temperature may drop below ZERO (risk of freezing) perform the operations described in the

“Preparing for extended periods of disuse” section.

25 PREPARING FOR EXTENDED

PERIODS OF DISUSE

If the storage cylinder is not going to be used for an extended period of time, ask the manufacturer’s Technical Assistance Centre to make the system safe.

26 EXTERNAL MAINTENANCE

Clean the cover, painted and plastic parts with a cloth damped in soap and water. To remove stubborn marks, use a cloth damped in a 50% mix of water and denatured alcohol or a suitable cleaning product.

b

Do not use fuels, sponges impregnated with abrasive solutions or powder detergents.

End user

END USER

19

Via Risorgimento, 13 - 23900 Lecco (LC) - Italy

Customer Service 199.13.31.31

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.