RBS 2S Boiler for Solar Heating System
Product Information
The product is a solar storage cylinder unit manufactured by
Riello S.p.A. The range includes six models: RBS 200 2S, RBS 300
2S, RBS 430 2S, RBS 550 2S, RBS 800 2S and RBS 1000 2S. The product
comes with a user manual that provides installation, operation and
maintenance instructions. The product must be installed by a
legally qualified heating engineer who will issue a declaration of
conformity to confirm compliance with instructions and standards.
The product must only be used for its intended purpose and must be
serviced at least once a year by a qualified heating engineer. The
product complies with DIN 4753-3 and UNI EN 12897 standards.
Product Usage Instructions
Upon receiving the product, check that it is complete, undamaged
and as ordered. Report any discrepancies or damage to the dealer
who sold it. The product must be installed by a legally qualified
heating engineer who will issue a declaration of conformity upon
completion of the installation. The product must only be used for
its intended purpose as specified in the user manual. If water
leaks from the storage cylinder, turn off the water supply and
contact R’s Technical Assistance Service or a qualified heating
engineer immediately. If the product is not going to be used for an
extended period of time, contact the manufacturer’s Technical
Assistance Service.
cod. 20116337 rev. 10 05/2023
RBS 200-300-430-550 2S
RBS 800-1000 2S
RBS 2S
EN INSTALLATION, OPERATION AND MAINTENANCE MANUAL
GENERAL INFORMATION GENERAL INFORMATION
RANGE
MODEL RBS 200 2S RBS 300 2S RBS 430 2S RBS 550 2S RBS 800 2S RBS 1000 2S
CODE 20116675 20116335 20117339 20116587 20132268 20132269
The following symbols are used in this manual:
9 CAUTION! = Identifies actions that require caution and adequate preparation.
0 STOP! = Identifies actions that you MUST NOT do.
1 GENERAL SAFETY INFORMATION
9 ACCESSORIES
For a complete list of accessories and details of their compatibil-
Check that the product is complete, undamaged and as or-
ity, refer to the Catalogue.
dered as soon as you receive it. Report any discrepancies or
Dear heating engineer, We would like to congratulate you on having recommended a R solar storage cylinder unit: a modern product that’s capable of ensuring a high degree of reliability, efficiency, quality and safety. While your technical skills and knowledge will certainly be more than sufficient, 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,
Riello S.p.A.
damage to the R dealer who sold it.
9 This product must be installed by a legally qualified heat-
ing 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 R in this instruction manual, and that it conforms to all applicable laws and standards.
9 This product must only be used for the purpose for which it is designed and made, as specified by R. R declines all responsibility, contractual or other, for damage to prop-
erty or injury to persons or animals caused by improper in-
CONFORMITY
stallation, adjustment, maintenance or use.
The R solar heaters comply with DIN 4753-3 and UNI EN 12897.
CONTENTS
9 The product must be serviced at least once a year. Servicing
must be arranged in advance with the R Technical Assistance Service.
9 All servicing and repairs must be performed by a qualified
GENERAL INFORMATION
heating engineer.
1 2
9 General Safety Information . . . . . . . . . . . . . . . . . . . . . . 2
Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
If water leaks from the storage cylinder, turn off the water
3
Description of the appliance . . . . . . . . . . . . . . . . . . . . . 3
4
Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
supply and contact R’s Technical Assistance Service or a qualified heating engineer immediately.
5 6
9 System layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Technical specifications. . . . . . . . . . . . . . . . . . . . . . . . . 4
If the product is not going to be used for an extended peri-
od of time, contact the manufacturer’s Technical Assistance
INSTALLATION
7
Unpacking the product . . . . . . . . . . . . . . . . . . . . . . . . . 6
8 Assembly of the insulation and the lining (models
800 – 1000) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
9 Place of installation . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
10 Water quality requirements. . . . . . . . . . . . . . . . . . . . . . 6
11 Water connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Service 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.
9 TECHNICAL ASSISTANCE SERVICE
12 Putting into service . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
This instruction manual is an integral part of the product. It
13 Temporary shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . 8
must be kept safe and must ALWAYS accompany the product,
14 Preparing for extended periods of disuse . . . . . . . . . . . 8
even if it is sold to another owner or transferred to another
15 Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
user or to another installation. If you lose this manual, or-
16 Cleaning and removing internal components . . . . . . . . 9
der a replacement immediately. Keep the product purchase
17 Recycling and disposal . . . . . . . . . . . . . . . . . . . . . . . . 10
END USER 18 Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 19 Temporary shutdown . . . . . . . . . . . . . . . . . . . . . . . . . .11 20 Preparing for extended periods of disuse . . . . . . . . . . .11 21 External maintenance. . . . . . . . . . . . . . . . . . . . . . . . . .11
documents to be presented to the R authorised Technical Assistance Service to request a service call under warranty.
9 Size the solar expansion tank so as to ensure complete absorption of the expansion of the fluid contained within the system, with reference to the prevailing regulations on the matter. In particular, consider fluid characteristics, considerable fluctuation of service temperature and vapour that
might be generated during solar collector stagnation stage.
Proper size of expansion tank ensures setting off of all vol-
ENGLISH
ume changes of the heat transfer fluid, avoiding excessive
At the end of its life, the product should
pressure increase. Limited pressure changes avoid reach-
be not be disposed of as solid urban
ing safety valve opening pressure and the consequent fluid
waste, but rather it should be handed
drainage.
over to a differentiated waste collection
This manual, Code – Rev. comprises pages.
ENGLISH General information
centre.
This manual, Code 20116337 – Rev. 10 (05/2023)
comprises 12 pages.
2
GENERAL INFORMATION
GENERAL INFORMATION
2 PRECAUTIONS
4 IDENTIFICATION
The operation of any appliance that uses electrical power demands that a number of fundamental safety precautions be respected. In particular:
0 Never attempt to install the system without using suitable personal protection equipment and without following all applicable occupational safety standards.
0 Do not touch the product when barefoot or wet if it has any
electrical accessories installed in it.
0 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.
0 Never pull, disconnect, or twist any electrical cables coming
from the appliance even if it is disconnected from the mains electricity supply.
0 Do not expose the storage cylinder to the elements. It is not
designed for use outdoors.
0 If solar plant pressure decreases, it is forbidden to top up
with only water as there is a danger of freezing and overheating.
0 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.
0 Do not allow children or infirm persons to operate the sys-
tem unsupervised.
0 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.
The R RBS 2S solar heaters can be identified by:
Data plate This lists the technical specifications and performance of the product.
RIELLO S.p.A. Via Ing.Pilade Riello 7 37045 Legnago (VR) – ITALY
BOLLITORE SOLARE SOLARBOILER INTERACUMULADOR SOLAR
Modello Model Modelo
Codice Code Código
Matricola Serial numb. N° Fabric.
Anno Year Año
Massima potenza assorbita sup. [T° Primario 80°C] Power absorbed by top coil [T° primary 80°C] Potencia absor bida max.se rp.sup. [T° Pri mário 80°C]
Produzione acqua calda sanitaria – serp. sup. [T 35°C] Domestic hot water production top coil [T 35°C] Producción de agua caliente sanitaria – serp. sup. [T 35°C]
Superficie serpentino superiore Top coil heat exchange surface area Superficie serpentín superior
Superficie serpentino inferiore Bottom coil heat exchange surface area Superficie serpentín inferior
Press. esercizio max. Maximum working pressure of storage cylinder Presión máxima de fun cio namiento
Capacità del bollitore Storage cylinder capacity Capa cidad del interacumulador
Potenza elettrica assorbita Electrical consumption Potencia eléctrica absorbida
Alimentazione elettrica Power supply Alimen tación eléctrica
Dispersioni secondo EN 12897 Heat loss according to EN 12897 Dispersiones según EN 12897
T067765IES
kW l/1′ m2 m2 bar l W V-Hz W
Collegamento di terra obbligatorio – Obligatory ground connection Connexión a tierra obligatoria
Matricola Serial number N° Fabric. Modello Model Modelo
RIELLO S.p.A. Via Ing.Pilade Riello 7 37045 Legnago (VR) – ITALY
Max pot. assorb. sup. Power abs. by top coil
kW
Pot. absor. max.serp.sup.
Superficie serp. inf.
Bottom coil heat exch. surf. area
m2
Sup. serpentín inf.
Serial number plate This specifies the serial number and model.
9 Technical data plate and Serial number plate are to be
applied (by the installer) after installation is complete.
9 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 SYSTEM LAYOUT
3 DESCRIPTION OF THE APPLIANCE
R RBS 2S double-coil solar heaters, available in six different
models, can be integrated in solar systems for the production of
domestic hot water.
1
R RBS 2S solar heaters can be equipped with a solar regulator and can be easily used in solar systems where R boilers or
2
heating groups serve as an integration.
6 5 UAC
P
The most important technical features of these solar storage cyl-
inders are: – the accurate study of tank and coil geometry – internal glazing, bacteriologically inert, to ensure the
maximum hygiene of treated water, reduce limescale deposits and make cleaning operations easier
3
– insulation made of expanded polyurethane free from CFC
(chlorofluorocarbons)
– a flange is provided for easy cleaning and maintenance
of the anti-corrosion magnesium anode.
4
M
EAF SB
1
Storage cylinder
2
Top coil
3
Bottom coil
4
Flange for heater in-
spection
5
Insulation
6 Cover
P
Socket
M Guide
UAC Domestic hot water
3
outlet EAF Domestic cold water
inlet SB Storage cylinder drain
GENERAL INFORMATION GENERAL INFORMATION
6 TECHNICAL SPECIFICATIONS
DESCRIPTION
RBS 2S
200
300
430
550
800
1000
Type of storage cylinder
Vertical, glazed
Heat exchanger layout
Vertical, with elliptical section
Storage cylinder capacity
208
301
430
551
731
883
l
Useful non-solar volume (Vbu)*
68
117
182
175
251
312
l
Solar usable volume (Vsol)**
140
184
260
376
480
570
l
Diameter of storage cylinder with insulation
604
604
755
755
1000
1000
mm
Diameter of storage cylinder without insulation
–
–
–
–
790
790
mm
Height with insulation
1338
1838
1644
1988
1846
2171
mm
Height without insulation
–
–
–
–
1745
2070
mm
Insulation thickness
50
50
50
50
100
100
mm
Total net weight
80
104
135
159
218
240
kg
Quantity/diameter/length of magnesium anode
1/33/450 1/33/450 1/33/520 1/33/520 1/40/600 1/40/600 mm
Flange internal diameter
130
130
130
130
130
130
mm
Diameter/length of sensor sockets
16/180 16/180 16/180 16/180 16/180 16/180 mm
Top coil water capacity
3,5
4,0
5,0
5,0
8,0
8,0
l
Top coil heat exchange surface area
0,7
0,8
1,0
1,0
1,6
1,6
m2
Bottom coil water capacity
3,5
5,0
7,0
9,0
11,5
13,5
l
Bottom coil heat exchange surface area
0,7
1,0
1,4
1,8
2,3
2,7
m2
Maximum operating pressure of storage cylinder
10
7
bar
Maximum operating pressure of coils
10
7
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
94
101
W
Discharges according to UNI 11300
1,38
1,53
1,67
1,89
2,09
2,24
W/K
Energy class
B
B
B
B
B
B
PERFORMANCE RELATING TO INTEGRATION COIL Upper coil continuous efficiency (ACS 10-45°C) (Vbu reference volume)
Upper coil delivery temperature
80°C T 20°C
16,1
23
31,4
31,4
50
50
kW
400
572
774
774
1240
1240
l/h
70°C T 20°C
10,3
17
20,7
20,7
38
38
kW
247
425
505
505
930
930
l/h
60°C T 20°C
6,5
11
15,5
15,5
25
25
kW
160
277
375
375
620
620
l/h
50°C T 20°C
2,4
5
7
7
15
15
kW
57
130
170
170
380
380
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 tem-
peratures 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
26
28
min
70°C T 20°C
33
34
32
32
34
40
min
60°C T 20°C
66
65
65
65
65
67
min
NL thermal efficiency coefficient according to DIN 4708. The NL index, referred to the integration exchanger, indicates a num-
ber 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
3,63
3,79
70°C
0,86
1,34
1,66
1,69
2,88
3,19
60°C
0,65
1,04
1,37
1,42
2,17
2,47
PERFORMANCE RELATING TO SOLAR COIL Bottom coil continuous efficiency (ACS 10-45°C) (Vbu reference volume)
Bottom coil delivery temperature
80°C T 20°C
17,1 419,6
29,6 727,1
44,2
53,6
71,9
82,9
kW
1087,2
1316,3
1766,1
2037,0
l/h
70°C T 20°C
10,9 268,4
21,9 537,4
28,9 709,0
35,3 867,7
54,6
63,0
kW
1342,2
1548,1
l/h
60°C T 20°C
6,9
14,2
21,6
26,4
35,9
41,5
kW
169,4
347,7
530,9
649,7
883,0
1018,5
l/h
50°C T 20°C
2,5
6,4
9,8
11,9
21,6
24,9
kW
62,5
158,1
239,8
293,4
529,8
611,1
l/h
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). 4
GENERAL INFORMATION
GENERAL INFORMATION
EMPTYING IN 10′
RBS 2S
200
300
430
550
800
1000
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
595
673
l
70°C
138
255
323
340
513
666
l
60°C
131
250
308
336
473
626
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
1190
1530
l
60°C
284
375
531
675
877
1110
l
50°C
205
310
390
485
762
790
l
(*)
Integration coil probe point reference, Vbu reference volume.
(**)
Solar coil probe reference.
Pressure drops TOP COIL
Pressure drops BOTTOM COIL
PRESSURE DROP (mbar) 600
500
PRESSURE DROP (mbar)
800
160
1000
140
1000
430
120
400
550
300 100
800
300
200 80
550
200
60
430
300
100
40
200
0
20
0
1000
2000
3000
4000
FLOW RATE (l/h)
0 0 200 400 600 800 1000 1200 FLOW RATE (l/h)
1000 800
550
15
430
10
300
200
5
0 0 100 200 300 400 500
Values referred to a mix of water and 30% glycol.
5
INSTALLATION INSTALLATION
7 UNPACKING THE PRODUCT
R RBS 2S solar heaters are supplied in a single package on a wooden pallet. The insulation and the lining components of the models 800 and 1000 are supplied separately from the structural work and are to be assembled upon receiving the product as described in the paragraph “Assembly of the insulation and the lining (models 800 – 1000)”. For these models the magnesium anode is supplied in a cardboard box. The following items are delivered in a plastic bag inside the packaging:
– Instruction manual – Bar code label – Hydraulic test certificate – Energy label (to be applied to device upon installation) – No. 4 adjustable feet to be mounted during installation
(for models 800 – 1000 only).
9 The instruction manual is an integral part of the solar stor-
age cylinder. Once located, read it thoroughly and keep it safe.
9 For handling operations, thoroughly follow the instructions
on device package label.
8 ASSEMBLY OF THE INSULATION AND THE LINING (MODELS 800 – 1000)
– Close the interlocking flaps (L) completely, which were previously left with an open tooth
– Fit the cover of the inspection flange using the two self-tapping screws (7) provided
– Apply the technical data plate and serial number plate.
If disassembling is required, proceed in reverse order.
9 Wear suitable personal protective equipment and use suit-
able safety devices.
9 PLACE OF INSTALLATION
R RBS 2S solar heaters can be installed in all rooms not requiring a level of electrical protection of the device greater than IP X0D.
0,7 m
0,3 m 0,3 m
0,6 m
0,3 m
The assembly of the insulation and lining components must be performed at the site of installation to facilitate passage through any doors and/or entries to the room.
NOTE: the above-indicated dimensions are recommended for a correct maintenance and access to the device.
5
3
1
9.1 Installation in older systems and systems requiring modernisation
32 1
6
L
L
3
1 3 7
4
When installing R RBS 2S 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).
10 WATER QUALITY REQUIREMENTS
Proceed as follows: – Fit the magnesium anode (6) with its seal in the sleeve and fix it in place – Assemble the insulating covers (1) around the body of the heater, making sure that the engagement points on the edges are positioned correctly. The edges are not required to be closed completely – Place the front protection plate (3) correctly on the attachments – Place the washers on the attachments and the protection for the inspection flange (4) – Place the rear protection plate by closing the interlocking flaps (L) without closing completely (leave one tooth open) – Apply the upper insulation (2) and the upper cover (5) (in order to insert the cover, exert a light and homogeneous pressure)
REFERENCE VALUES
pH
6-8
Electrical conductivity
less than 200 S/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 specified in the current standards and regulations on the installation site.
Installation
6
INSTALLATION
INSTALLATION
11 WATER CONNECTIONS
RBS 200 – 550 2S AD
Psc RBS 200 Psc RBS 300 – 430 – 550
DF
UAC MC
RL RC
M Psr R EAF
N
A B C D E F G H I L M P O
RBS 800 – 1000 2S
UAC
MC
Psc RL RC AD RBS 1000
DF M
AD RBS 800
Psr R
EAF
N
F G H
I L M
A B C D E
DESCRIPTION
UAC
Domestic hot water outlet
MC
Outlet from boiler
RC
Return to boiler
M
Outlet from solar collector
R
Return to solar collector
RL
DHW recirculation
EAF
Domestic cold water inlet
Psc
Diameter/length of boiler sensor socket
Psr
Diameter/length of solar controller sensor socket
AD
Quantity/diameter/length of magnesium anode
DF
Flange internal diameter
A
B
C
D
E
F
G
H
I
L
M
N
O
P
RBS 2S
200
300
430
550
800 1000
1″ M
1″1/4 M
Ø
1″ M
1″ M
Ø
1″ M
1″ M
Ø
1″ M
1″ M
Ø
1″ M
1″ M
Ø
1″ M
1″ M
Ø
1″ M
1″1/4 M
Ø
16/180
16/180
mm
16/180
16/180
mm
1/33/450 1/33/450 1/33/520 1/33/520 1/40/600 1/40/600 mm
130
130
130
130
130
130 mm
171
171
208
207
75
75 mm
243
253
329
348
289
289 mm
403
393
427
443
428
421 mm
598
693
684
788
799
834 mm
738
903
824
1088
969
1006 mm
878
1113
964
1328
1144
1337 mm
953
1233
1064
1428
1234
1426 mm
–
1323
1174
1538
1321
1506 mm
1098
1438
1289
1653
1444
1637 mm
1170
1670
1440
1784
1707
2032 mm
1338
1838 1644 1988 1846
2171 mm
Ø 604 Ø 604 Ø 755 Ø 755 Ø 1000 Ø 1000 mm
–
–
–
–
555
–
mm
–
–
–
–
–
1237 mm
9 It is recommended to install shut-off valves at domestic water inlet and outlet.
9 Check the efficiency of the seals when filling/refilling the storage cylinder.
9 In case of a probe, 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.
9 Install the magnesium anode supplied (for the models 800 and 1000).
7
TECHNICAL ASSISTANCE SERVICE TECHNICAL ASSISTANCE SERVICE
12 PUTTING INTO SERVICE
13 TEMPORARY SHUTDOWN
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
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.
9 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”.
– 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 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.
14 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
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.
– Close the shut-off cocks for the domestic hot water circuit.
– Make sure that the boiler and solar collectors connected to the system shut down correctly when their mains power switches are turned OFF.
9 Drain the central heating circuit and domestic hot water cir-
cuit if there is any risk of freezing.
Provided the above checks have been completed satisfactorily, restart the system and verify its performance.
Technical Assistance Service
8
TECHNICAL ASSISTANCE SERVICE
15 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 Service 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
TECHNICAL ASSISTANCE SERVICE
1 2 3
– Close the shut-off cocks for the domestic hot water circuit
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A 3
– Drain the storage cylinder’s DHW (secondary) water circuit.
16 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.
0 Do not use abrasive products, petrol or triethylene.
INTERNAL CLEANING
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).
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.
6 5
4
9 8 7
If the magnesium anode is fitted in position (A), remove the cover (4) and use a suitable wrench to unscrew the anode holder (3).
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.
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.
9 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.
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TECHNICAL ASSISTANCE SERVICE TECHNICAL ASSISTANCE SERVICE
16.1 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
Filling pump
– Check and clean as necessary – Check the pump
The water temperature from the boiler is too low
– Check the setting
There is air in the primary circuit
– Bleed the circuit
SOLAR COLLECTOR CIRCUIT FAULT
The storage cylinder functions incorrectly or irregularly
The storage cylinder loses a lot of heat overnight
CAUSE
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 There is natural circulation to the
collectors
SOLUTION
– 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
– Make sure that the non-return valve is efficient and closes properly. Replace if necessary
17 RECYCLING AND DISPOSAL
The device is primarily composed of:
Material steel
PU (polyurethane) polystyrene – polyester felt
PE (polyethylene) ABS (acrylonitrile-butadiene-styrene)
Component structural work insulation (models 200 – 550) insulation (models 800 – 1000) water connection washers lining and covers
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.
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END USER
END USER
END USER INSTRUCTIONS
Refer to the GENERAL SAFETY INFORMATION and PRECAUTIONS section for safety-related information.
18 START-UP
19 TEMPORARY SHUTDOWN
The heater commissioning must be performed by Technical Assistance Service personnel. Under certain circumstances, such as after long periods of disuse, the user may need to re-start it without involving the Technical Assistance Service. 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 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.
9 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”.
20 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 Service to make the system safe.
21 EXTERNAL MAINTENANCE
Clean the outside of the storage cylinder with a soft cloth damped in soapy water.
0 Do not use abrasive products, petrol or triethylene.
End user
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RIELLO S.p.A. Via Ing. Pilade Riello, 7 37045 – Legnago (VR) www.riello.com
The manufacturer strives to continuously improve all products. Appearance, dimensions, technical specifications, standard equipment and accessories are therefore liable to modification without notice.
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