sylber SN 150/1 T, SN 220/2 TI, SN 200/1 TI, SN 300/3 TI, SN 300/2 TI Installer, Technical Assistance Centre And User Manual

NATURAL CIRCULATION SYSTEMS

SN TI

INSTALLER, TECHNICAL ASSISTANCE

CENTRE AND USER MANUAL

2

Dear Customer,
Thank you for choosing a S Natural circulation system. 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
Natural circulation system to be serviced regularly by an authorised

S Technical Assistance Centre. Their personnel

are specially trained to keep your product efficient and cheap to run. Your S Technical Assistance Centre will also
stock any original spare parts that might be required.
This instruction manual contains important instructions and precautions that must be observed to ensure the trouble-free
installation and efficient functioning of your

S solar water heating system.

Please accept our renewed thanks for your purchase.

CONFORMITY

The solar collectors used in S natural circulation systems conform to EN standard 12975.

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

RANGE

MODEL CODE

SN 150/1 TI 20099131
SN 200/1 TI 20099132
SN 220/2 TI 20099133
SN 300/2 TI 20099134
SN 300/3 TI 20099135

ACCESSORIES

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

This manual, Code 20100700 - Rev. 0 (06/15) comprises 36 pages.

3

CONTENTS

The following symbols are used in this manual:

b

CAUTION! =

Identifies actions that require caution

and adequate preparation.

a

STOP! =

Identifies actions that you MUST NOT do.

This manual, Code

- Rev.
comprises
pages.

ENGLISH

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

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

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

3 Description of the system ..................... 5

4 Safety devices ............................. 5

5 Identification ............................... 5

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

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

8 Overall dimensions and weights................ 7

9 Water circuit ............................... 7

INSTALLER ..............................8

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

11 Handling .................................. 9

12 Preparing for installation ...................... 9

13 Assembly ................................ 10

14 System water connections ................... 27

15 Preparing for initial startup . . . . . . . . . . . . . . . . . . . 28

TECHNICAL ASSISTANCE CENTRE .........30

16 Initial startup .............................. 30

17 Maintenance .............................. 30

END USER..............................32

18 Putting into service ......................... 32

19 Maintenance .............................. 32

20 Troubleshooting ........................... 33

21 Disposal ................................. 33

4

GENERAL

1 GENERAL SAFETY INFORMATION

b

Check that the product is complete, undamaged and
as ordered as soon as you receive it. Report any dis­crepancies or damage to the S dealer who sold it.

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

S in this instruc-

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

b

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

S. S declines all responsibility, contractual or

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

b

Make sure that the roof is strong enough to support
the weight of the solar water heating system under
operating conditions. Also make sure that the section
of roof chosen for the installation enjoys a high level
of insolation, and is not shaded during the day by tall
plants, trees, other houses, hills, etc..

b

The installation of a solar water heating system mod­ifies the existing structure of the roof. Verify the suita­bility of all roof elements and if necessary adapt them
to avoid leaks or damage by wind and/or snow loads.

b

If the system is installed in an area subject to gusting
winds or snow loads in excess of the limits given in
the technical specifications, consult your supplier for
advice.

b

Snow can build up in the sheltered area behind the
solar water heating system. Provide adequate protec­tion to avoid increasing the static load on the roof.

b

The system must be serviced at least once a year.

b

The water supply circuit must permit the storage
cylinder to be filled and emptied in safety. Shut-off
valves must therefore be easily accessible to the user
and the operation of emptying the storage cylinder
must not create any risk of flooding or other damage.

b

Insulate the domestic water pipes (hot and cold) and
the pipes of the solar collector circuit. Provide suita­ble insulation for all outdoor accessories.

b

The point through which the water pipes enter the
building must be rain-proof and damp-proof.

b

If you notice any water or heat transfer liquid leaks,
disconnect the system immediately from the mains
electricity supply (if a supplementary heating ele­ment is installed), shut off the water supply, and notify

S’s Technical Assistance Service or a qualified

heating engineer immediately.

b

Make sure that the water-glycol mix in the solar col­lector circuit is able to resist the minimum tempera­tures likely to occur in the place of installation.

b

The system can reach very high temperatures. Safety
valves can therefore discharge extremely hot liquids.
Make sure that the expansion vessel is of a suitable
size and design for use in solar water heating sys­tems.

b

Use proper slings to lift and move the elements of the
system. Never lift the collector or storage cylinder by
their fittings. Avoid subjecting the collector to impacts
or mechanical strain, and take care to protect the
glass panel. Use the personal protection equipment
required by applicable safety standards.

2 PRECAUTIONS

a

Never attempt to install the system without using the
personal protection equipment and without following
the safety precautions specified by applicable occu­pational safety standards.

a

Never install solar collectors on roofs without an ade­quate lightning protection system.

a

Never install the system without providing proper
drainage for the two safety valves: that of the domes­tic hot water circuit and that of the primary (solar col­lector) circuit.

a

If the storage cylinder is equipped with a supplemen­tary heating element, never attempt any cleaning or
maintenance without first disconnecting it from the
mains power supply.

a

Do not allow children or infirm persons to operate the
system unsupervised.

a

Do not tamper with or adjust the safety or control de­vices without prior authorisation and instructions from
the manufacturer.

a

Never use anti-freeze other than that supplied by

S to fill or top up the solar collector circuit. Mixing

different products can reduce the anti-freeze protec­tion provided.

a

Never drain the solar collector circuit under sunny
conditions or when the collector is hot.

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

5

GENERAL

3 DESCRIPTION OF THE SYSTEM

The

SN TI

system is a solar hot water heating system that
functions on the principle of natural circulation. The heat
transfer liquid therefore circulates by normal convection.
The system comprises one or more solar collectors and
a jacket type storage cylinder, located above the collec­tor/s.
The system does not require any pumps or adjustments.
A supplementary heating element is also available for use
if needed.

The system comprises:

- Solar collector/s

- A jacket type solar storage cylinder

- Box of water pipes and fittings

- Mounting brackets

- Anti-freeze liquid.

4 SAFETY DEVICES

The system is equipped with the following safety devices:

- A primary circuit safety valve that opens if pressure in
the primary (solar collector) circuit rises above a 2.5 bar
threshold.

- A secondary circuit safety valve that opens if pressure
in the secondary (DHW) circuit rises above a 10 bar
threshold.

b

Water may come out of the primary and secondary
circuit safety valves as a result of variations in tem­perature and pressure during the course of the day.
Ensure that proper drainage is provided. For the
same reason, avoid standing near the safety valves
during the day.

b

Safety devices must only be replaced by S's
Technical Assistance Service using original spare
parts.

b

Over-temperature protection requires an adequate
supply of cold water from the mains.

5 IDENTIFICATION

S

SN TI

systems are identified by:

CODICE : 20091464

TIPO : CP20TSS

S/N :

COLLETTORE SOLARE PIANO

DIMENSIONI: 1818X1048X70 mm
SUPERFICIE LORDA: 1,91 m

2

TEMPERATURA DI STAGNAZIONE: 192°C

SUPERFICIE DI APERTURA: 1,78 m

2

CONTENUTO LIQUIDO: 1,6 l

SUPERFICIE ASSORBITORE: 1,77 m

2

PESO A VUOTO: 34 kg LIQUIDO TERMOVETTORE:

ACQUA+GLICOLE PROPILENICO

MAX CONCENTRAZIONE GLICOLE: 50%

MAX PRESSIONE ESERCIZIO: 10 bar

FABBRICATO IN ITALIA

da Riello S.p.A.

20092486_E2

EN 12975

Certif. 011-7S2400F

13000000

BAR CODE 128B

Anno di produzione

SERIALE PROGRESSIVO

SISTEMA SOLARE A CIRCOLAZIONE NATURALE

NATURAL CIRCULATION SOLAR WATER HEATING SYSTEM

Serial N°

Mod.

bar

Anno

l

Cod.

Tipo/Type

bar

Year

Capacità bollitore

Storage cylinder capacity

Pressione di progetto acqua sanitaria

DHW circuit operating pressure

Pressione max circuito solare

Max solar heating circuit pressure

La protezione da sovratemperatura dipende dalla fornitura di acqua fredda sanitaria

Over

r - t

emperat

ure

prot

ection

requires an a

dequate supply of co

ld water

T067783GE

SYLBER
Via Risorgimento, 13
23900 Lecco (LC)

Storage cylinder data plate

Collector data plate

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.

6

GENERAL

6 SYSTEM LAYOUT

11 11

8

2

7

4

7

1 5

2

1

4

3

6

10

12

9 (*)

Components

1 Solar collector/s
2 Storage cylinder
3 Mounting frame

Pipes and ttings

4 Collector outlet
5 Collector return
6 Plug

External connections

7 Domestic cold water inlet - 3/4”
8 Domestic hot water outlet - 3/4”
9 Domestic cold water inlet cock
10 Filling/drain cock

Safety devices

11 Primary circuit safety valve (2.5 bar)
12 Non-return valve - Secondary circuit safety valve (10

bar)

(*) (Not supplied. To be provided by installer.)

POSSIBLE CONFIGURATIONS

SN TI

150/1÷200/1

SN TI

220/2÷300/2

SN TI

300/3

7 TECHNICAL SPECIFICATIONS

Description

SN TI

150/1 200/1 220/2 300/2 300/3

Collector surface area 1,91 x 1 1,91 x 1 1,91 x 2 1,91 x 2 1,91 x 3

m

2

x n.

of pan.

Exposed area 1,78 x 1 1,78 x 1 1,78 x 2 1,78 x 2 1,78 x 3

m

2

x n.

of pan.

Absorption area 1,77 x 1 1,77 x 1 1,77 x 2 1,77 x 2 1,77 x 3

m

2

x n.

of pan.
Stagnation temperature 192 °C
Storage cylinder capacity 153 202 223 278 278 l
Magnesium anode 22 x 300 22 x 300 22 x 300 22 x 400 22 x 400 Ø x mm
Heat transfer liquid capacity 8,5 13,6 16,3 20,3 22,2 l
Maximum wind and snow load 1900 1900 1500 1900 1500 Pa
DHW circuit safety valve operating pressure 10 bar
Solar collector circuit safety valve operating pressure 2,5 bar

7

GENERAL

8 OVERALL DIMENSIONS AND WEIGHTS

L

H

P2

P1

P

Description

SN TI

150/1 200/1 220/2 300/2 300/3

Empty weight 94 122 143 193 200 kg
Full weight 256 338 382 491 500 kg
L 1300 1300 2410 2410 3510 mm
P 270 270 360 360 360 mm
P1 1965 1965 1619 1619 1619 mm
P2 - - 332 332 332 mm
H 720 720 720 720 720 mm

9 WATER CIRCUIT

UAC

Domestic hot water outlet

EAF

Domestic cold water inlet

1

Primary (solar collector) circuit safety valve (2.5 bar)

2

Non-return valve - safety valve of secondary (DHW)
circuit (10 bar)

3

Storage cylinder

4

Collector

5

DHW tank (secondary circuit)

6

Primary circuit

7

Temperature sensor socket

8

Magnesium anode

9

Primary circuit filling/drain cock

10

Insulation

CWI

HWO

1

2

3

5

6

6

4

heat exchange

heat exchange

9

8

7

10

8

INSTALLER

10 UNPACKING THE PRODUCT

Contents of packing:

- Solar collector/s

- Storage cylinder

- Box of accessories containing fittings and a container

of glycol anti-freeze

- Mounting kit for flat roofs (see the assembly section for

details of kit contents).

A plastic pouch containing:

- Instruction manual

- Bar code label

- Serial number plate.

b

This instruction manual is an integral part of the

SN

TI

system. Once located, read it thoroughly and

keep it safe.

b

A protective lm is applied to the glass of the solar
collector. On completion of installation, only remove
this lm if you are going to put the system into service
immediately.

Description

SN TI

150/1 200/1 220/2 300/2 300/3

WEIGHT

Total weight of supply See the transport document kg
COLLECTOR/S package 34 34 3 x 34 3 x 34 4 x 34 kg
STORAGE CYLINDER package 62 76 84 106 116 kg

DIMENSIONS

Total supply package

2034 x
1246 x

770

2034 x
1246 x

770

2053 x
1246 x

870

2160 x
1250 x

870

2174 x
1246 x

870

mm

COLLECTOR/S package

1866 x
1200 x

95

1866 x
1200 x

95

3 x

(1865 x

1200 x

95)

3 x

(1865 x

1200 x

95)

4 x

(1865 x

1200 x

95)

mm

STORAGE CYLINDER package

1250 x

600 x

600

1250 x

600 x

600

1250 x

600 x

600

2050 x

600 x

600

2050 x

600 x

600

mm

Installer

9

INSTALLER

11 HANDLING

Hold solar collectors at the points shown (A) to move them.
Lift and move the storage cylinder in a horizontal position.
Make sure that the slings and lifting gear used are suitable
for the weight.

A

A

A

A

a

Do not lift the solar collector by its water fittings.

a

Do not lift the storage cylinder by its water fittings.

b

Wear suitable personal protective equipment and use
suitable safety devices.

12 PREPARING FOR INSTALLATION

Select the best possible orientation for the solar collectors
(ideally facing south). Avoid positions that are shaded by
plants, trees, buildings or hills, etc. during the day.

Maintain the minimum distance (A) between the system
and the edge of the roof.
Remove all gravel and detritus from the surface on which
the system is to be installed.

The mounting kit must not be used to install other super­structures. It is designed only for use with S solar water
heating systems.

The installation of a solar water heating system modifies
the existing structure of the roof. Verify the suitability of all
roof elements and if necessary adapt them to avoid leaks
or damage by wind and/or snow loads.

> A

> A

SN TI

U.M.

150/1 200/1 220/2 300/2 300/3

A 1 1 1,5 1,5 1 m

10

INSTALLER

13 ASSEMBLY

Start installing the system by assembling the mounting frame for sloping roofs. To do so, follow the instructions given
below.

5

6

7

13

2 3

18

14 4 8 11 9 12

19 20 17 1521 16

1 10

23

24

25

27

28

29

26

22

11

INSTALLER

CONTENTS OF MOUNTING KIT

Description

SN TI

150/1 200/1 220/2 300/2 300/3

1 Clamp 2 2 4 4 6
2 Collector fixing bracket 2 2 4 4 6
3 Collector fixing bracket 2 2 4 4 6
4 Rectangular head screw 4 4 8 8 12
5 Mounting brackets 2 2 2 2 2
6 Profiles 2 2 2 2 2
7 Support bars 2 2 2 2 4
8 M12 nut 12 12 24 24 36
9 M8 flanged nut 12 12 24 24 36
10 Join clamps - - - - 2
11 M12 washer 12 12 24 24 36
12 M8 screw 14 14 28 28 42
13 Stud strips 6 6 6 6 6
14 1" seal 4 4 6 6 8
15 1/2" F x 1" M straight union 1 1 1 1 1
16 3/4" straight union 2 2 2 2 2
17 Elbow union - - 2 2 2
18 Collector plug 1 1 1 1 1
19 10 bar safety valve 1 1 1 1 1
20 2.5 bar safety valve 1 1 1 1 1
21 Cock 1 1 1 1 1
22 150-200 return pipe 1 1 - - ­23 150-200 flow pipe 1 1 - - ­24 200-300 return pipe - - 1 1 ­25 200-300 flow pipe - - 1 1 ­26 Additional flow pipe - - 1 1 1
27 Additional return pipe - - 1 1 1
28 300 return pipe - - - - 1
29 300 flow pipe - - - - 1

12

INSTALLER

STEPS VALID FOR ALL MODELS

- Mark the anchoring points

b

Check that the marks are square.

150/1
200/1

220/2
300/2

300/3

13

INSTALLER

- Position the stud strips (13) in the concave section of the tiles. Maintain the distances specified in the previous point
between the studs “A”

A

A

A

A

A

A

13

13

14

INSTALLER

Fix the front and rear stud strips to the roof. Secure each strip at a minimum of two points, and check for tightness. The
screws “V” are NOT SUPPLIED and must be provided on installation. Only use screws that are suitable for the character­istics of the roof.
Proceed as follows:

- Remove the tiles

- Fit the stud strip (13) in close contact with the roof, minimising the distance "D". If necessary bend the strip as needed

- Replace the roof tiles

1

2

V

V

D

3

V

V

4

13

15

INSTALLER

STEPS VALID FOR THE FOLLOWING MODELS: 150/1 - 200/1

Fix the profiles to the front studs.
Proceed as follows:

- Screw the nuts (8) and washers (11) as far down as possible over the studs

- Fit the profiles (6) over the studs

- Fix the profiles in place with the nuts (8)

Fix the mounting brackets (5) to the profiles (6) with the M8 screws (12) and nuts (9).

M12

M12

860 mm 150/1 - 200/1 - 220/2

1040 mm 300/2 - 300/3

M8

M8

8

8

6

6

5

11

16

INSTALLER

Position the storage cylinder on the mounting brackets (5) and fix it in place with the M8 bolts (12).

5

12

12

5

17

INSTALLER

Fit the support bar to the rear studs.
Proceed as follows:

- Screw the nuts (8) and washers (11) as far down as possible over the studs

- Fit the clamps (1) to the studs on the strips

- Engage the support bar (7) in the clamps (1)

- Fix the support bar (7) in place with the nuts (8) of the clamps (1)

Adjust the clamps to the same height and fix them in place (about 20-30 mm from the top of the tiles), then saw off the
protruding lengths of stud.

M12

M12

8

1

11

18

INSTALLER

Position the collector, pivoting it on the support bar (7).

7

19

INSTALLER

Secure the collector with the top fixing brackets (3).
Make the water connections.
Secure the collector with the bottom fixing brackets (2), using the top hole.

3

12

4

9

20

INSTALLER

STEPS VALID FOR THE FOLLOWING MODELS: 220/2 - 300/2 - 300/3

Fit the support bars to the front and rear studs.
Proceed as follows:

- Screw the nuts (8) and washers (11) as far down as possible over the studs

- Fit the clamps (1) to the studs on the strips

- Engage the support bar (7) in the clamps (1)

- Fix the support bar (7) in place with the nuts (8) of the clamps (1)

Adjust the clamps to the same height and fix them in place (about 20-30 mm from the top of the tiles), then saw off the
protruding lengths of stud.

M12

M12

M12

M12

11

1

1

8

8

11

21

INSTALLER

Position the collector, pivoting it on the support bar (7).

7

22

INSTALLER

Secure the collector with the top fixing brackets (3).

3

9

4

23

INSTALLER

Fix the profiles to the front studs.
Proceed as follows:

- Screw the nuts (8) and washers (11) as far down as possible over the studs

- Fit the profiles (6) over the studs

- Fix the profiles in place with the nuts (8)

Fix the mounting brackets (5) to the profiles (6) with the M8 screws (12) and nuts (9).

M12

M12

860 mm 150/1 - 200/1 - 220/2

1040 mm 300/2 - 300/3

M8

M8

8

8

6

6

5

11

24

INSTALLER

Position the storage cylinder on the mounting brackets (5) and fix it in place with the M8 bolts (12).

5

12

12

5

25

INSTALLER

Make the water connections.
Secure the collector with the bottom fixing brackets (2), using the top hole.

4

9

2

26

INSTALLER

STEPS VALID FOR ALL MODELS

Make the following connections:

- 2.5 bar safety valve (20)

- 10 bar safety valve (19)

- straight flow and return unions (16)

20

19

16

16

Complete the collector water connections:

- flow pipes

- return pipes

- drain cock

- plug

150/1
200/1

14

22

21

15

14

18

14

23

220/2
300/2

14

21

15

14

26

25

17

18

14

17

25

300/3

14

21

15

14

26

17

29

18

14

29

17

27

INSTALLER

Make sure that you comply with all applicable lightning
protection and building potential compensation legisla­tion.

On completion of assembly, make sure that the S so­lar water heating system is perfectly stable, then remove
the protective film from the storage cylinder. Apply the
data plate (1) and the S label to the storage cylinder.

a

Never attempt to install the system without using the
personal protection equipment and without follow­ing the safety precautions specified by applicable
occupational safety standards.

1

b

A protective film is applied to the glass of the solar collector to protect the absorber against solar irradiation and
prevent the solar collector from becoming too hot if it is not going to be put into service immediately.

Fill the system,

but do not remove the lm until you are ready to put the system into service.

Take care when removing the film as it may
be electrostatically charged. Do not leave the protective film in place for longer than 12 months. Once removed,
the protective film cannot be re-used. Dispose of the protective film in compliance with legislation governing the
disposal of PVC.

14 SYSTEM WATER CONNECTIONS

UAC

Domestic hot water outlet (Ø 3/4”)

EAF

Domestic cold water inlet (Ø 3/4”)

1

Primary (solar collector) circuit safety valve
(2.5 bar)

2

Non-return valve - safety valve of secondary
(DHW) circuit (10 bar)

3

Storage cylinder

4

Collector

5

DHW tank (secondary circuit)

6

Primary circuit

7

Temperature sensor socket

8

Magnesium anode

9

Primary circuit filling/drain cock

10

Cock

11

Insulation

12

DHW circuit expansion vessel

13

Pressure reducer

14

Water softener filter

15

Drain

CWI

HWO

heat exchange

heat exchange

Connections to be
made by the installer

1

10

10

10

12

13

14

15

15

15

9

15

2

3

5

8

6

6

4

11

7

The water supply circuit must permit the storage cylinder to be filled and emptied in safety. Shut-off valves must therefore
be easily accessible to the user and the operation of emptying the storage cylinder must not create any risk of flooding
or other damage.

b

All water pipe connections must conform to appli­cable standards.

b

The operating pressure limits specified on the data
plate must never be exceeded. It may therefore be
necessary to fit a pressure reducer.

b

A thermal mixing valve must always be connected
to the hot water outlet to control the temperature of
hot at the taps.

b

The point through which the water pipes enter the
building must be rain-proof and damp-proof.

28

INSTALLER

b

All shut-off cocks and drain cocks must be easily
accessible. Make sure that the end user fully under­stands how they function.

Shut-off and drain cocks

15 PREPARING FOR INITIAL STARTUP

Proceed as follows to fill the primary and secondary cir­cuits.

- Fill the DHW tank.

- Flush out the solar collector circuit.

- Fill the solar collector circuit.

b

Fill the DHW tank before filling the solar collector
circuit.

b

Only fill the solar collector circuit when the collec­tors are cold.

FILLING THE DHW TANK

- Open and leave open the cock (5) for the domestic cold
water inlet (CWI).

- Open a hot water tap and fill the storage cylinder with
cold water from the mains supply. When water starts
coming out of the hot water tap, leave it run until you
obtain an even flow then close the tap. The DHW tank
is now full.

FLUSHING THE SOLAR COLLECTOR CIRCUIT

Carefully check all connections and unions for leaks be­fore filling the system with the water and glycol mix. Use
the following procedure to test for water tightness. The
same procedure can also be used to flush out the circuit
to remove any residues.

- Connect the hose union on the filling/drain cock (1) to a
cold water tap using a length of hose pipe.

- Connect the union (2) on the storage cylinder to a drain.

- Open the cock (1) and the cold water tap and leave wa­ter flow into the solar collector circuit for a few minutes.

- Close the cold water tap and the cock (1).

- Check all connections and unions for leaks.

EAF

Sc

UAC

5

2

1

29

INSTALLER

FILLING THE SOLAR COLLECTOR CIRCUIT

Heat transfer liquid

The anti-freeze supplied contains non-toxic, biodegrada­ble and environmentally friendly propylene glycol. Mix the
propylene glycol with water (preferably demineralised).
Establish the necessary concentration of propylene gly­col using the table alongside on the basis of the tempera­tures for which anti-freeze protection is required.

b

Only use the products listed in the S Catalogue
to top up the circuit.

Pressure and gravity lling

- Premix a sufficient volume of water and glycol solution
in a suitable container, selecting the right concentration
according to the table above.

Pressure

filling

- Use lengths of rubber hose to connect a pump between
the container and the hose union on the filling/drain
cock (1). Open the cock.

- Start up the pump and fill the solar heating circuit until
the heat transfer liquid starts to flow out of the fitting (2)
at the top of the storage tank.

Gravity

filling

- Use a length of rubber hose to connect the container to
the filling/drain cock (1). Open the cock.

- Fill the solar heating circuit under gravity until the heat
transfer liquid starts to flow out of the fitting (2) at the top
of the storage tank.

When the storage cylinder is full:

- Close the cock (1).

- Fit the safety valve (3) to the fitting (2).

Anti-freeze Temperature Density (20 °C)

55% -40 °C 1,048 kg/dm

3

50% -32 °C 1,045 kg/dm

3

45% -26 °C 1,042 kg/dm

3

40% -21 °C 1,037 kg/dm

3

35% -17 °C 1,033 kg/dm

3

30% -14 °C 1,029 kg/dm

3

25% -10 °C 1,023 kg/dm

3

2

1

3

2

1

3

30

TECHNICAL ASSISTANCE CENTRE

16 INITIAL STARTUP

Checks and preparations for initial start-up

Fill the storage cylinder with (potable) water.

Fill the solar collector circuit.

Make sure that the domestic cold water inlet

cock is open.

Make sure that the safety valves are functio-

ning.

Check the system for leaks.

Check the concentration of the anti-freeze.

Uncover the solar collectors and clean them

if necessary.

Make sure that the system is securely fixed

to the mounting frame.

Make sure that the roof does not leak.

Inspect the insulation.

17 MAINTENANCE

b

The solar water heating system must be serviced periodically by S’s Technical Assistance Centre or by a qual­ified heating engineer.

b

The system should be serviced at least once a year, ideally in the autumn.

b

Check the condition of the magnesium anode.

Visually inspect the collectors for damage/

dirt.

Visually inspect the storage cylinder.

Visually inspect the mounting frame and

roof anchor points.

Inspect the insulation.

Make sure that the roof does not leak.

Make sure that the safety valves are functio-

ning.

Check the system for leaks.

Check the concentration of the anti-freeze.

Check the pH of the anti-freeze with litmus

paper.

Topping up or changing the heat transfer

liquid

Clean inside the storage cylinder (every 2

years or more frequently in hard water/high

temperature areas)

Checking the heat transfer liquid

- Use an instrument like a refractometer or densimeter to check the density of the anti-freeze. If the value is below that
necessary to protect the system at the minimum temperature selected, replace the heat transfer liquid or add an­ti-freeze.

- Use litmus paper to check the pH (nominal value approx. 7.5). If the measured value is below 7, change the heat trans­fer liquid.

Storage cylinder components

1

2

3

4

5

6

1

Insulated storage cylinder

2

Sensor socket (1/2”)

3

Flange

4

Magnesium anode

5

Flange cover

6

Fitting for electrical heating element (accessory)

Technical Assistance Centre

31

TECHNICAL ASSISTANCE CENTRE

Topping up or changing the heat transfer liquid

For certain maintenance operations (such as replacing
pipes or unions or changing the heat transfer liquid) the
solar collector (primary) circuit may have to be drained.
Proceed as follows:

- Connect a hose to the hose union on the filling/drain
cock (1).

- Open the cock (1).

- Remove the safety valve (2) to allow air into the primary
circuit and allow the heat transfer liquid to flow out.

b

Only use the products listed in the S Catalogue
to top up the circuit.

b

In areas where there is a significant risk of freezing,
take particular care over tightness testing and flush­ing with water.

b

DO NOT drain the solar collector circuit under sun­ny conditions or when the collectors are hot.

Cleaning inside the storage cylinder

Proceed as follows to clean inside the storage cylinder:

- Close the domestic cold water inlet cock.

- Connect a hose to the storage cylinder drain cock (D)
fitted on installation, and open the cock. Leave the wa­ter run out until the tank is completely empty.

- Unscrew the fixing screws and remove the flange cover
(1) from the left of the storage cylinder.

- Remove the nuts (2) and screw the bolt (3) in to release
the flange (4) from the tank.

- Remove the flange (4). Check and clean the inside of
the tank.Check the condition of the seal (5). Replace if
necessary.

- Check the magnesium anode (6) for wear and replace
it if necessary.

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

b

Screw the bolt (3) out until the flange fits snugly
against the tank. Tighten the nuts (2) to secure the
flange (4), proceeding diagonally around the flange
to apply pressure uniformly around the seal.

2

1

EAF

UAC

Sc

1

2

4

3

6

5

32

END USER

END USER INSTRUCTIONS

The

SN TI

system is a solar hot water heating system that functions on the principle of natural circulation. The heat transfer
liquid therefore circulates by normal convection.
The system comprises one or more solar collectors and a jacket type storage cylinder, located above the collector/s.
The system does not require any pumps or adjustments.

18 PUTTING INTO SERVICE

The system must be put into service for the first time by S’s Technical Assistance Centre. After this it will continue to
function automatically.

19 MAINTENANCE

If the system is easily accessible, regularly check the cleanliness of the glass panel/s of the collector/s. If necessary,
clean the glass, but only when it is cold, preferably in the early morning. If access is difficult, contact your local Technical
Assistance Centre.

Once a year, check the condition of the insulation around the pipes.

If the system is not going to be used for an extended period of time, contact your local Technical Assistance Centre to
have it made safe.

b

The solar water heating system must be serviced periodically by S’s Technical Assistance Centre or by a qual­ified heating engineer.

b

The system must be serviced at least once a year.

b

If no domestic hot water is drawn off from the system, the safety valves of the domestic hot water and solar collector
circuits may open to discharge pressure and ensure correct functioning.

b

These safety valves present a risk of burns or scalding. If a pressure in excess of 2.5 bar builds up in the solar col­lector circuit, the safety valve opens.

b

Check the condition of the magnesium anode regularly as it provides protection against corrosion.

b

The system can reach very high temperatures (>150°C) under normal operating conditions. Take the greatest care
to avoid burns or scalding.

b

In the event of any malfunctioning or failure, and to have parts replaced, contact S’s Technical Assistance
Centre.

End user

33

END USER

20 TROUBLESHOOTING

FAU LT CAUSE SOLUTION

No or insufficient domestic hot

water production

Unusually high draw of DHW. - Check.

Water leaks in the DHW distribution

circuit.

- Check.

Collector glass covered in dust or

leaves.

- Clean.

The level of heat transfer liquid in the

circuit has dropped as the result of

leaks from the unions or because of

over-temperature during extended

periods of disuse.

- Top up the circuit with water/glycol
mix and bleed any air out.

Air bubbles have formed inside the

circuit and are impeding natural

circulation.

- Bleed the circuit by loosening the
uppermost union on the short pipe
until liquid comes out.

- Top up to replace any lost liquid.

Vibrations Loose screws. - Tighten the screws.

21 DISPOSAL

When the system is no longer needed, do not abandon it in the environment, but dispose of it through appropriate chan­nels and in compliance with applicable legislation.

34

END USER

35

END USER

20100700 - Rev. 0 (06/15)

www.sylber.it

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

standard equipment and accessories are therefore liable to modication without notice.