solar storage cylinder

solar storage cylinder IDRA DS SOLAR INSTALLATION MANUAL USER MANUAL

Range MODEL CODE BERETTA IDRA DS 200 20001224 BERETTA IDRA DS 300 20001225 BERETTA IDRA DS 430 20001226 BERETTA IDRA DS 550 20001227 BERETTA IDRA DS 750 20009144 BERETTA IDRA DS 00 20009145 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 Conformity Conformity B storage cylinders conform to DIN 4753-3 and UNI EN 12897 standards. 2 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... 5 6 Technical specifications... 6 7 Water circuit... 8 8 Location of sensors... 9 9 Overall dimensions and water fittings.... INSTALLER... 13 Unpacking the product.... 13 11 Handling... 14 12 Place of installation.... 16 13 Installation in older systems and systems requiring modernisation... 16 TECHNICAL assistance CENTRE... 17 14 Putting into service... 17 15 Temporary shutdown... 17 16 Preparing for extended periods of disuse... 17 17 Maintenance... 18 18 Cleaning and removing internal components.... 18 19 Recycling and disposal... 20 20 Troubleshooting... 20 END USER.... 21 21 Start-up... 21 22 Temporary shutdown... 21 23 Preparing for extended periods of disuse... 21 24 External maintenance... 21 3 The following symbols are used in this manual: CAUTION! = Identifies actions that require caution and adequate preparation. aa STOP! = Identifies actions that you MUST NOT do. This manual, Code - Rev. comprises pages. This manual, Code 20013693 - Rev. 11 (05/14) comprises 24 pages.

GENERAL General 4 1 General Safety Information 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 b 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 storage cylinder is not going to be used for an extended period of time, contact B 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. 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. 2 Precautions The operation of any appliance that uses electrical power demands that a number of fundamental safety precautions be respected. In particular: aa Never attempt to install the system without using suitable personal protection equipment and without following all applicable occupational safety standards. aa Do not touch the storage cylinder when barefoot or wet if it has any electrical accessories connected to it. aa 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. aa Never pull, disconnect, or twist any electrical cables coming from the appliance even if it is disconnected from the mains electricity supply. aa Do not expose the storage cylinder to the elements. It is not designed for use outdoors. aa 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. aa 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. aa Do not allow children or infirm persons to operate the system unsupervised. aa 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 3 Description of the appliance 5 System layout B IDRA DS solar storage cylinders are double coil units, specifically designed for installation in domestic hot water production systems heated by solar collectors. They are available in six models from 200 to 00. The most important technical features of these solar 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 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. Temperature sensor and power cables are all internally routed (models 200 to 550). A flange is provided for easy cleaning and maintenance of the anti-corrosion magnesium anode (double on models 750 and 00). 8 7 1 (*) 2 B IDRA DS storage cylinders can be connected to a special solar regulator and can be integrated in solar heating systems in which B boilers or water heaters provide supplementary heat. 11 3 4 Identification 6 B IDRA DS storage cylinders are identified by: Data plate This lists the technical specifications and performance of the product. 5 9 4 5 Beretta Caldaie Via Risorgimento, 1323900 Lecco (LC) SOLARBOILER SOLAR STORAGE CYLINDER T067659ED02 Modell Model Herstell. Nr. Serial number Artikel Nr. Code Baujahr Year Leistungsaufnahme obere Rohrschlange [Primärkreislauftemperatur T=80 C] Power absorbed by top coil (T primary 80 C) Erzeugung von Brauchwasser obere Rohrschlange[ T 35 C] Domestic Hot Water production - top coil Austauschoberfläche obere Rohrschlange Top coil heat exchange surface area Austauschoberfläche untere Rohrschlange Bottom coil heat exchange surface area Maximaler Boilerbetriebsdruck Maximum working pressure of storage cylinder Boilerfassungvermögen Storage cylinder capacity Elektrischer Leistung Electrical consumption Anschlussspannung Power supply bar l V-Hz ERDUNG OBLIGATORISCH - OBLIGATORY GROUND CONNECTION Herstell. Nr. Serial number Modell Model Beretta Caldaie Via Risorgimento, 1323900 Lecco (LC) Leistungsaufnahme obere Rohrschlange Power absorbed by top coil Austauschoberfläche untere Rohrschlange Bottom coil heat exch. surf. area Serial number plate This specifies the serial number and model. kw l/1' m 2 m 2 W kw m 2 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. 1 Storage cylinder 2 Boiler temperature sensor socket 3 Auxiliary temperature sensor socket 4 Solar controller temperature sensor socket 5 Cylinder inspection flange 6 Bottom coil 7 Top coil 8 First magnesium anode 9 Second magnesium anode (for models 750 and 00) Top flange (models 750 and 00 only) 11 Sleeve for electric heating element (not supplied) (*) On models 750 and 00, this fitting can be used as an alternative installation position for the first magnesium anode (in installations where height is limited).

GENERAL 6 Technical specifications 6 DESCRIPTION IDRA DS 200 300 430 550 750 00 Type of storage cylinder Vitrified Storage cylinder layout Vertical Heat exchanger layout Vertical Storage cylinder capacity 203 298 433 546 716 875 l Diameter of storage cylinder with insulation 605 755 00 mm Diameter of storage cylinder without insulation 500 650 790 mm Height with insulation 1330 1840 1630 1980 1870 2195 mm Insulation thickness 50 0 mm Diameter/length of first magnesium anode 33/450 33/520 33/450 mm Diameter/length of second magnesium anode - 33/450 mm Flange diameter 118 mm Diameter/length of sensor sockets 16/175 17/2 mm Sleeve for electric heating element (not supplied) 1 ½ F Ø Bottom coil water capacity 5,7 9,3 11,0 12,8 16,0 19,0 l Top coil water capacity 4,1 5,5 7,1 8,0,2,2 l Bottom coil heat exchange surface area 0,94 1,53 1,80 2, 2,80 3,16 m 2 Top coil heat exchange surface area 0,68 0,91 1,17 1,31 1,70 m 2 Maximum operating pressure of storage cylinder 7 bar Maximum operating pressure of coils bar Maximum operating temperature 99 C Net weight 78 9 139 169 214 244 Kg Heat loss according to EN 12897:2006 at ΔT=45 C 2,79 2,24 2,18 2,74 4,20 4,68 kwh/24h Performance obtained with a primary circuit temperature of 60 C (**) Power absorbed by top coil 11,0 15,8 19,5 23,4 33,0 33,0 kw Domestic hot water production top coil (*) 270 388 480 575 811 811 l/h Performance obtained with a primary circuit temperature of 70 C (**) Power absorbed by top coil 15,7 21,7 27,5 31,8 46,0 46,0 kw Domestic hot water production top coil (*) 386 532 676 781 1130 1130 l/h Performance obtained with a primary circuit temperature of 80 C (**) Power absorbed by top coil 20,7 30,6 36,5 43,0 58,0 58,0 kw Domestic hot water production top coil (*) 508 753 897 56 1425 1425 l/h Performance obtained with a primary circuit temperature of 90 C (**) Power absorbed by top coil 26,3 38,0 45,0 53,0 72,0 72,0 kw Domestic hot water production top coil (*) 646 934 15 1300 1769 1769 l/h (*) With T= 35 C. (**) Performance achieved with collector circuit pump delivering 3000 l/h, and using a boiler of suitable power.

GENERAL Pressure drops TOP COIL PRESSURE DROP (mbar) 800 700 Mod. 750 00 600 500 400 300 Mod. 550 Mod. 430 Mod. 300 Mod. 200 200 0 0 0 00 2000 3000 4000 FLOW RATE (l/h) Pressure drops BOTTOM COIL 7 PRESSURE DROP (mbar) 350 300 250 200 Mod. 00 Mod. 750 Mod. 550 Mod. 430 Mod. 300 150 Mod. 200 0 50 0 0 200 400 600 800 00 1200 1400 1600 FLOW RATE (l/h) Tests performed with a 30% glycol/water solution.

GENERAL 7 Water circuit TYPICAL WATER SYSTEM SCHEMATIC 3 4 MI Dir Solar regulator MI Mix SCo M 2 1 1 R RI Dir RI Mix MC UAC RC 16 PD 16 16 20 PB 22 18 SB1 17 19 PR 11 16 5 7 6 M C 8 9 16 PS Boiler 21 21 SB2 7 15 14 EAF 12 13 Water control system 8 1 Solar collector 2 Collector temperature sensor socket 3 Manual bleed valve 4 Vent cock 5 Vent valve 6 Pressure gauge 7 Safety valve 8 Drain 9 Expansion vessel Disconnect valves 11 Temperature gauge 12 Flow regulator 13 Flow meter 14 Pressure reducer 15 Water softener filter 16 Non-return valve 17 Thermostatic mixer valve 18 Solar storage cylinder 19 DHW recirculation temperature sensor 20 Central heating system pump 21 Central heating system manifolds 9 8 22 Mixer valve UAC Domestic hot water outlet EAF Domestic cold water inlet MI Mix Mixed central heating flow RI Mix Mixed central heating return MI Dir Direct central heating flow RI Dir Direct central heating return MC Outlet from boiler RC Return to boiler M Collector outlet R Collector return PI Mix Mixed central heating pump PB Solar storage cylinder heating pump PR DHW recirculation pump PD Direct central heating pump PS Solar collector circuit pump SB1 Storage cylinder top temperature sensor SB2 Storage cylinder bottom temperature sensor SCo Collector probe Note! The above schematic is purely indicative. B IDRA DS 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. b b 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 DS storage cylinders are equipped with dedicated sockets for the storage cylinder TEMPERATURE GAUGE or TEMPERATURE SENSOR. 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 Psc B Pau Psr 9 C A B C Psc Pau Psr Temperature sensor socket Temperature sensor Guide Boiler temperature sensor socket Auxiliary temperature sensor socket Solar controller temperature sensor socket b b Joins between temperature sensor cables and control panel extension cables must be soldered and protected by sheaths or other forms of electrical insulation.

GENERAL 9 Overall dimensions and water fittings IDRA DS 200-430 AD1 ICP TR AD1 UAC MC ICP (*) Psc RE DSA DSA RC Pau D M R N Q RL O C B A Psr EAF (SB) F G H I L (*) Cable routing 35 S P E DESCRIPTION IDRA DS 200 430 UAC Domestic hot water outlet 1 F Ø MC Outlet from boiler 1 F Ø RC Return to boiler 1 F Ø M Outlet from solar collector 1 M Ø R Return to solar collector 1 M Ø RL DHW recirculation ¾ F Ø EAF (SB) Domestic cold water inlet (storage cylinder drain) 1 F Ø Psc Diameter/length of boiler sensor socket 16/175 mm Psr Diameter/length of solar controller sensor socket 16/175 mm Pau Diameter/length of auxiliary temperature sensor socket 16/175 mm RE Sleeve for electric heating element (not supplied) 1 ½ F mm AD1 Diameter/length of magnesium anode 33/450 33/520 mm TR Temperature gauge DSA Sensor/power cable entrance ICP Rear cable entrance A 365 460 mm B 625 860 mm C 675 9 mm D 00 1330 mm E 170 205 mm F 425 480 mm G 140 300 mm H 645 870 mm I 725 960 mm L 840 1125 mm N 05 1330 mm O 1170 1440 mm P 640 790 mm Q 1330 1630 mm S 605 755 Ø mm We recommend that you install isolating valves in the outlet and return lines. b b Check the efficiency of the seals when filling/refilling the storage cylinder.

GENERAL IDRA DS 300-550 AD1 ICP TR UAC MC AD1 ICP (*) Psc RE DSA RC DSA RL Q D M R N Pau O C B A Psr EAF (SB) F G H I L (*) Cable routing 35 S P E DESCRIPTION IDRA DS 300 550 UAC Domestic hot water outlet 1 F Ø MC Outlet from boiler 1 F Ø RC Return to boiler 1 F Ø M Outlet from solar collector 1 M Ø R Return to solar collector 1 M Ø RL DHW recirculation ¾ F Ø EAF (SB) Domestic cold water inlet (storage cylinder drain) 1 F Ø Psc Diameter/length of boiler sensor socket 16/175 mm Psr Diameter/length of solar controller sensor socket 16/175 mm Pau Diameter/length of auxiliary temperature sensor socket 16/175 mm RE Sleeve for electric heating element (not supplied) 1 ½ F mm AD1 Diameter/length of magnesium anode 33/450 33/520 mm TR Temperature gauge DSA Sensor/power cable entrance ICP Rear cable entrance A 365 460 mm B 875 960 mm C 955 80 mm D 1490 1650 mm E 170 205 mm F 445 505 mm G 430 445 mm H 955 30 mm I 35 1130 mm L 1200 1290 mm N 14 1540 mm O 1670 1785 mm P 640 790 mm Q 1840 1980 mm S 605 755 Ø mm We recommend that you install isolating valves in the outlet and return lines. b b Check the efficiency of the seals when filling/refilling the storage cylinder. 11

GENERAL IDRA DS 750-00 AD1 AD1 UAC TR AD1 (*) MC O Q D RE M R Psc RC Pau RL L N T C A B AD2 Psr EAF (SB) (*) Cable routing S 35 P E F G H I 12 DESCRIPTION IDRA DS 750 00 UAC Domestic hot water outlet 1 ¼ M Ø MC Outlet from boiler 1 F Ø RC Return to boiler 1 F 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 (storage cylinder drain) 1 ¼ M Ø Psc Diameter/length of boiler sensor socket 2 x 7/2 mm Psr Diameter/length of solar controller sensor socket 2 x 7/2 mm Pau Diameter/length of auxiliary temperature sensor socket 2 x 7/2 mm RE Sleeve for electric heating element (not supplied) 1 ½ F mm AD1 Diameter/length of first magnesium anode 33/450 mm AD2 Diameter/length of second magnesium anode 33/450 mm TR Temperature gauge A 400 400 mm B 436 525 mm C 950 20 mm D 520 675 mm E 75 75 mm F 365 365 mm G 384 439 mm H 909 19 mm I 994 1111 mm L 130 130 mm N 235 235 mm O (*) 1459 1695 mm P 50 50 mm Q 248 336 mm S 18 18 Ø mm T 1840 2165 mm (*) This fitting can be used as an alternative installation position for the first magnesium anode (in installations where height is limited). 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.

INSTALLER Installer Unpacking the product MODELS IDRA DS 200 to 550 B IDRA DS 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 Hydraulic test certificate The second anode for installation instead of the inspection flange is supplied separately and must be fitted by the installer. The first anode comes pre-installed in the top flange (vertical position). b b The instruction manual is an integral part of the solar storage cylinder. Once located, read it thoroughly and keep it safe. H H A B IDRA DS A B H Weight (Kg) 200 700 700 1480 93 300 700 700 1980 126 430 850 850 1790 158 550 850 850 2130 188 MODELS IDRA DS 750-00 B IDRA DS storage cylinders are delivered in a single package, protected by a plastic bag inside a protective foam ruer wrapping and supported by a wooden pallet. The following items are delivered in a plastic bag inside the packaging: Instruction manual Hydraulic test certificate 4 adjustable feet A IDRA DS A B H Weight (Kg) 750 40 40 2025 235 00 40 40 2350 264 B 13

INSTALLER 11 Handling MODELS IDRA DS 200 to 550 Make sure that any lifting equipment is of adequate capacity to lift and move the storage cylinder. Remove the brackets (1) to remove the storage cylinder from the pallet. To lift the storage cylinder, remove the plug (2) and insulation (3) and screw an eyebolt (Ø ¾ ) 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 2 3 4 Wear suitable personal protective equipment and use suitable safety devices. aa 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. 14 1 1 1 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. MODELS IDRA DS 750 to 00 Make sure that any lifting equipment is of adequate capacity to lift and move the storage cylinder. Remove the brackets (1) to remove the storage cylinder from the pallet. To lift the storage cylinder, remove the plug (2), insulation (3) and magnesium anode (4) and screw an eyebolt (Ø 1 ¼ ) of suitable capacity for the weight of the cylinder into the hole (5). 2 3 4 5 1 1 1

INSTALLER 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. The casing and insulation can be removed to facilitate access into the place of installation. To do so, proceed as follows. Remove the plug (2). Unscrew the two fixing screws and remove the top insulation section (3). Remove the protective fitting plugs (4). Unzip the plastic cover (5). Cut the straps (6). Remove the insulation shells (7). Reverse the above steps to fit the insulation again. Make sure that the insulation shells (7) are securely fixed in place by straps before fitting the plastic cover. Use a strap wrench if necessary. 2 7 3 5 4 15 6 Fit the feet provided into the holes in the bottom of the storage cylinder and adjust as necessary to compensate for any unevenness in the floor. 17 Wear suitable personal protective equipment and use suitable safety devices. a 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.

INSTALLER 12 Place of installation B IDRA DS storage cylinders can be installed in any room where there is no specific requirement for an electrical protection rating higher than IP X0D. 13 Installation in older systems and systems requiring modernisation When installing B IDRA DS 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.) 0,3 m 0,4 m 0,6 m 0,4 m 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 16 Respect the minimum specified installation distances to ensure correct installation and access for maintenance.

TECHNICAL ASSISTANCE CENTRE Technical Assistance Centre 14 Putting into service It is essential to perform the following checks before starting up or testing the functioning of the storage cylinder. In particular, check that: The supply cocks in the domestic water circuit are all open. 15 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. If outdoor temperature may drop below ZERO (risk of freezing) perform the operations described in the Preparing for extended periods of disuse section. The water connections to the boiler and solar collectors have been made correctly. All the pipes in the water circuit have been insulated in conformity to relevant standards. The electrical connections have been made correctly (using the hoses provided to route the cables on models 200 to 550.) See page as well as the manuals for all installed accessories. The solar collector circuit has been correctly flushed out and filled with water-glycol mix, and all air has been bled out of the circuit. (See the manual for the solar collectors.) Start up the boiler (if installed) as instructed in its own manual. Put the solar collectors into service. See the manuals for the solar collectors and associated accessories. Once the system has been started up, perform the following checks. Make sure that all pumps are free and rotate in the right direction. Make sure that all circuits have been bled. 16 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. 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. 17 Drain the central heating circuit and domestic hot water circuit if there is any risk of freezing. Make sure that the boiler and solar collectors connected to the system shut down correctly when their mains power switches are turned OFF. Provided the above checks have been completed satisfactorily, restart the system and verify its performance.

TECHNICAL ASSISTANCE CENTRE 17 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. 3 1 2 Close the shut-off cocks for the domestic hot water circuit. 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. 18 Drain the storage cylinder s DHW (secondary) water circuit 4 5 6 7 8 9 18 Cleaning and removing internal components EXTERNAL CLEANING Clean the outside of the storage cylinder with a soft cloth damped in soapy water. To remove stuorn 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. aa Do not use abrasive products, petrol or triethylene. INTERNAL CLEANING MODELS IDRA DS 200 to 550 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. 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. 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. 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.

TECHNICAL ASSISTANCE CENTRE MODELS IDRA DS 750-00 Removing and checking the first magnesium anode If the magnesium anode is fitted in the top of the storage cylinder, remove the cover (1) and insulation (2), and use a suitable wrench to unscrew the anode holder (3). If the magnesium anode is fitted in position (A), remove the cover (4) and use a suitable wrench to unscrew the anode holder (3). Removing and checking the second magnesium anode Remove the flange cover (5) and use a suitable wrench to unscrew the anode holder (6). Check the magnesium anode for wear and replace it if necessary. On completion of cleaning, follow the above steps in the reverse order to refit all removed parts. Check the magnesium anode for wear and replace it if necessary. 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 5 6 3 2 Cleaning inside the storage cylinder Remove the anode (6) as instructed above, and then proceed as follows. Unscrew the bolts (7) and remove the cover (8), taking care not to damage the magnesium anode (6). Remove the seal (9). Clean inside the storage cylinder and remove any residues through the access hole. 19 A 3 4 7 8 9 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. 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.

TECHNICAL ASSISTANCE CENTRE 19 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. 20 Troubleshooting SUPPLEMENTARY HEATING CIRCUIT FAULT CAUSE SOLUTION Flow rate too high. Fit a pressure limiter. Fit a flow reducer. The storage cylinder functions incorrectly or irregularly. There are blockages or deposits in the domestic hot water circuit. Check and clean as necessary. The pump is malfunctioning. Check the pump. The water temperature from the boiler is too low. Check the temperature setting. There is air in the primary circuit. Bleed the circuit. SOLAR COLLECTOR CIRCUIT FAULT CAUSE SOLUTION 20 The storage cylinder functions incorrectly or irregularly. There is air in the circuit. Bleed the circuit. The flow rate is too low or too high. Pressure is too low. Check the flow rate of the collector circuit. Check that circuit pressure is approximately 3 bar when cold. The storage cylinder loses a lot of heat overnight. There is lime scale or sludge in the cylinder. There is natural circulation to the collectors. Check and clean as necessary. - - Make sure that the non-return valve is efficient and closes properly. Replace if necessary.

END USER End user End user instructions Refer to the GENERAL SAFETY INFORMATION and PRECAUTIONS section for safety-related information. 21 Start-up 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). 22 Temporary shutdown 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. If outdoor temperature may drop below ZERO (risk of freezing) perform the operations described in the Preparing for extended periods of disuse section. 23 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. 24 External maintenance Clean the cover, painted and plastic parts with a cloth damped in soap and water. To remove stuorn marks, use a cloth damped in a 50% mix of water and denatured alcohol or a suitable cleaning product. Do not use fuels, sponges impregnated with abrasive solutions or powder detergents. 21

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20013693 - Rev. 11 (05/14) 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.