Riello KOMBISOLAR 430 3S User manual

cod. 20145435 rev. 2 07/2018
KOMBISOLAR 3S
EN INSTALLATION, OPERATION AND MAINTENANCE MANUAL

2
RANGE
Model Code
KOMBISOLAR 430 3S 20139026
KOMBISOLAR 550 3S 20139044
KOMBISOLAR 750 3S 20145318
KOMBISOLAR 1000 3S 20145324
ACCESSORIES
For a complete list of accessories and details of their compatibil-
ity, refer to the Catalogue.
ENGLISH
Dear Customer,
Thank you for choosing a RCombination 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 RCombi-
nation cylinder to be serviced regularly by an authorised R
service centre. Their personnel are specially trained to keep your
Combination cylinder efcient and cheap to run. Rservice
centres also stock any original spare parts that might be re-
quired.
This manual contains important instructions and precautions
that must be observed to ensure the trouble-free installation
and efcient functioning of your RCombination cylinder.
Please accept our renewed thanks for your purchase,
Riello S.p.A.
CONFORMITY
The Rsolar heaters comply with UNI EN 12897.

3
This manual, Code 20145435 - Rev. 2 (07/2018)
comprises 24 pages.
CONTENTS
The following symbols are used in this manual:
9 CAUTION! = Identies actions that require caution and
adequate preparation.
0 STOP! = Identies actions that you MUST NOT do.
Thismanual,Code
-Rev.
comprises
pages.
GENERAL
1 General Safety Information ......................4
2 Important safety precautions ....................4
3 Description of the appliance .....................5
4 Identication ................................5
5 System layout ................................6
6 Technical specications.........................8
7 Typical water system schematics ................. 13
8 Location of sensors ........................... 15
9 Overall dimensions and water ttings............. 16
INSTALLER
10 Unpacking the product ........................ 18
11 Handling................................... 18
12 Assembly of the insulation and the lining .......... 19
13 Place of installation .......................... 19
TECHNICAL ASSISTANCE SERVICE
14 Putting into service ...........................20
15 Temporary shutdown ......................... 21
16 Preparing for extended periods of disuse .......... 21
17 Clean the combination storage cylinder ........... 21
18 Recycling and disposal ........................ 21
END USER
19 Start-up ...................................23
20 Temporary shutdown .........................23
21 Preparing for extended periods of disuse ..........23
22 External maintenance......................... 23

4
GENERAL
GENERAL
1 GENERAL SAFETY INFORMATION
9 Check that the product is complete, undamaged and as or-
dered as soon as you receive it. Report any discrepancies or
damage to the Rdealer who sold it.
9 This product must be installed by a legally qualied heat-
ing engineer. On completion of the installation, the install-
er must issue the owner with a declaration of conformity
conrming that the installation has been completed to the
highest standards in compliance with the instructions pro-
vided by Rin this instruction manual, and that it con-
forms to all applicable laws and standards.
9 This product must only be used for the purpose for which it
is designed and made, as specied by R. Rdeclines
all responsibility, contractual or other, for damage to prop-
erty or injury to persons or animals caused by improper in-
stallation, adjustment, maintenance or use.
9 The product must be serviced at least once a year. Servicing
must be arranged in advance with the RTechnical Assis-
tance Service.
9 All servicing and repairs must be performed by a qualied
heating engineer.
9 If water leaks from the storage cylinder, turn off the water
supply and contact R’s Technical Assistance Service or a
qualied heating engineer immediately.
9 If the product is not going to be used for an extended peri-
od of time, contact the manufacturer’s Technical Assistance
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
tted) and at the mains power switch
−Drain the central heating circuit and domestic hot water
circuit if there is any risk of freezing.
9 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, or-
der a replacement immediately. Keep the product purchase
documents to be presented to the Rauthorised Technical
Assistance Service to request a service call under warranty.
9 Size the solar expansion tank so as to ensure complete ab-
sorption of the expansion of the uid contained within the
system, with reference to the prevailing regulations on the
matter. In particular, consider uid characteristics, consid-
erable uctuation of service temperature and vapour that
might be generated during solar collector stagnation stage.
Proper size of expansion tank ensures setting off of all vol-
ume changes of the heat transfer uid, avoiding excessive
pressure increase. Limited pressure changes avoid reach-
ing safety valve opening pressure and the consequent uid
drainage.
2 IMPORTANT SAFETY PRECAUTIONS
The operation of any appliance that uses electrical power de-
mands that a number of fundamental safety precautions be re-
spected. 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 rst
turning the mains power switch OFF to disconnect all elec-
trical accessories (if tted) 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 over-
heating.
0 Do not use connections or safety devices or ttings (expan-
sion vessels, pipes, insulation) that are not specically de-
signed and tested for use in solar water heating systems.
0 Do not allow children or inrm 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 com-
pliance with applicable legislation.
General

5
GENERAL
GENERAL
3 DESCRIPTION OF THE APPLIANCE
The triple coil combi storage tanks RKOMBISOLAR 3S are made
of an inertial storage tank inside of which three coils are im-
mersed: a top one for the solar heating circuit, a top one for the
heating circuit and a stainless steel one used for the production
of domestic hot water.
The most important technical features of these combination cyl-
inders are:
−the accurate study of tank and coil geometry
−A rapid heat exchange coil in bacteriologically inert stain-
less steel for domestic hot water production ensures
maximum water hygiene and reduced lime scale depos-
its
−Water ttings are available at different heights, permit-
ting different hot water generators to be used without
reducing the stratication effect
−insulation made of expanded polyurethane free from CFC
(chlorouorocarbons)
−Excellent exibility permits use in both high and low
temperature systems
−Dimensions are extremely compact thanks to the combi-
nation of an inertial storage cylinder and a domestic hot
water coil.
The triple coil combi storage tanks RKOMBISOLAR 3S can be
equipped with a specic solar regulator and they can easily be
inserted into solar equipment where the boilers or thermal sys-
tems Ract as auxiliary producers of heat.
4 IDENTIFICATION
RKOMBISOLAR 3S combination storage cylinders are identi-
ed by:
Mod. 430-550
Data plate
This lists the technical speci-
cations and performance of
the product.
Product identication
plate
This states the name of
the product.
bar
V-Hz
l
W
bar
°C
kW
l
°C
kW
RIELLO S.p.A.
Via Ing.Pilade Riello 7
37045 Legnago (VR) - ITALY
RIELLOS.p.A.
Via Ing.Pilade Riello7
37045 Legnago (VR) - ITALY
T067830ED
COMBINATION STORAGE CYLINDER - KOMBISPEICHER
Model
Modell
Code
Bestellnummer
Serial number
Seriennummer
Year of manufacture
Baujahr
DHW coil capacity
Inhalt der Warmwasserwendel
Power absorbed by top coil [Primary T = 80°C]
Leistungsaufnahme obere Rohrwendel [T Primärkreis 80°C]
Inertial storage cylinder capacity
Inhalt des Pufferspeichers
Maximum working pressure (DHW)
Max. Druck Warmwasserbetrieb
Maximum working temperature (DHW)
Max. Temp. Warmwasserbetrieb
Electrical consumption
Stromaufnahme
Maximum working pressure of inertial storage cylinder
Max. Druck Pufferspeicher-Betrieb
Maximum working temperature of inertial storage cylinder
Max. Temp. Pufferspeicher-Betrieb
Power supply
Stromversorgung
W
Heat loss according to EN 12897
Verluste nach EN 12897
Obligatory ground connection - Erdschluss ist Vorschrift
l/h
l/h
Serial number
Seriennummer
Power absorbed by top coil
Leist.aufn. o. Wendel
Model
Modell
DHW prod., cont. draw
WW-Bereitungdurchg. Anzapfung
DHW production, continuousdraw
Warmwasserbereitungbeidurchgehender Anzapfung
[ ∆T 35°C]
[ ∆T 35°C]
Serial number plate
This species the serial number, model, consumption
and capacity.
Mod. 750-1000
Data plate
This lists the technical
specications and per-
formance of the prod-
uct.
Product identication plate
This states the name of the
product.
bar
V-Hz
l
W
bar
°C
kW
l
°C
kW
RIELLO S.p.A.
Via Ing.Pilade Riello 7
37045 Legnago (VR) - ITALY
RIELLO S.p.A.
Via Ing.Pilade Riello 7
37045 Legnago(VR) - ITALY
T067830ED
COMBINATION STORAGE CYLINDER - KOMBISPEICHER
Model
Modell
Code
Bestellnummer
Serial number
Seriennummer
Year of manufacture
Baujahr
DHW coil capacity
Inhalt der Warmwasserwendel
Power absorbed by top coil [Primary T = 80°C]
Leistungsaufnahme obere Rohrwendel [T Primärkreis 80°C]
Inertial storage cylinder capacity
Inhalt des Pufferspeichers
Maximum working pressure (DHW)
Max. Druck Warmwasserbetrieb
Maximum working temperature (DHW)
Max. Temp. Warmwasserbetrieb
Electrical consumption
Stromaufnahme
Maximum working pressure of inertial storage cylinder
Max. Druck Pufferspeicher-Betrieb
Maximum working temperature of inertial storage cylinder
Max. Temp. Pufferspeicher-Betrieb
Power supply
Stromversorgung
W
Heat loss according to EN 12897
Verluste nach EN 12897
Obligatory ground connection - Erdschluss ist Vorschrift
l/h
l/h
Serial number
Seriennummer
Power absorbed by top coil
Leist.aufn. o. Wendel
Model
Modell
DHW prod., cont. draw
WW-Bereitungdurchg. Anzapfung
DHW production, continuousdraw
Warmwasserbereitungbeidurchgehender Anzapfung
[ ∆T 35°C]
[∆T 35°C]
Serial number plate
This species the serial
number, model, consump-
tion and capacity.
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 difcult.

6
GENERAL
GENERAL
5 SYSTEM LAYOUT
Mod. 430-550
1
2
5
7
10
6
12
11
9
3
4
8
13
14
7
15
16
18
20
20
21
22
17
19
23
1 Insulation
2 Domestic cold water inlet
3 Buffer tank
4 Bottom coil
5 Probe pit
6 Sleeve for electric heating element (not supplied)
7 Boiler temperature sensor socket
8 Top coil
9 Storage cylinder temperature gauge
10 Domestic hot water outlet
11 DHW coil
12 Vent valve tting
13 Outlet from boiler
14 Flow from second boiler
15 Heating system inlet
16 Return to second boiler
17 Flow from solar collector
18 Boiler return line (water 50°C)
19 Return to solar collector
20 Condensation boiler inlet / Water return 50° C
21 Solar controller temperature sensor socket
22 Condensing boiler return / Storage tank lling
23 Heating system return line (water 30°C) / Storage tank
draining

7
GENERAL
GENERAL
Mod. 750-1000
1
2
5
7
10
6
12
11
9
3
4
8
13
14
7
15
16
18
20
21
22
23
17
19
1 Insulation
2 Domestic cold water inlet
3 Buffer tank
4 Bottom coil
5 Probe pit
6 Sleeve for electric heating element (not supplied)
7 Boiler temperature sensor socket
8 Top coil
9 Storage cylinder temperature gauge
10 Domestic hot water outlet
11 DHW coil
12 Vent valve tting
13 Outlet from boiler
14 Flow from second boiler
15 Heating system inlet
16 Return to second boiler
17 Flow from solar collector
18 Boiler return line (water 50°C)
19 Return to solar collector
20 Condensation boiler inlet / Water return 50° C
21 Solar controller temperature sensor socket
22 Condensing boiler return / Storage tank lling
23 Heating system return line (water 30°C) / Storage tank
draining

8
GENERAL
GENERAL
6 TECHNICAL SPECIFICATIONS
Description KOMBISOLAR 3S
430 550 750 1000
Type of inertial storage cylinder non vitried
Storage cylinder layout vertical
Heat exchanger layout vertical
Bottom coil smooth steel pipe
DHW coil Corrugated pipe in AISI 316 L stainless steel
Inertial storage cylinder capacity 407 520 732 898 l
Diameter with insulation 755 755 1000 1000 mm
Diameter of storage cylinder without insulation 650 650 790 790 mm
Height 1650 2000 1855 2180 mm
Insulation thickness 50 100 mm
Sensor socket diameter (boiler and solar circuits) 16 Ø mm
Temperature sensor diameter 16 8Ø mm
Temperature gauge sensor diameter 10 1/2" Ø mm
Top primary coil water content 7,1 8,0 10,0 10,0 l
Bottom primary coil water capacity 11,0 12,8 17,4 19,8 l
DHW coil water capacity 23,6 23,6 30,4 30,4 l
Top primary coil heat exchange surface 1,17 1,31 1,72 1,72 m2
Bottom primary coil heat exchange surface area 1,80 2,10 2,90 3,34 m2
DHW coil heat exchange surface area 4,5 4,5 5,8 5,8 m2
Power absorbed (*) by top primary coil 25,0 26,0 30,0 30,0 kW
Maximum working pressure of inertial storage cylin-
der 3 5 bar
Maximum working temperature of inertial storage
cylinder 99 °C
Maximum working pressure of primary coils 10 bar
Maximum working pressure of DHW coil 6bar
Maximum working temperature of primary coils 99 °C
Maximum working temperature of DHW coil 99 °C
Recommended surface area of solar panel 6 8 12 14 m2
Net weight 169 193 238 268 kg
Heat loss according to EN 12897:2006 at ∆T=45 °C 78 85 93 98 W
Energy efciency class B
(*) With ∆T= 35°C and primary temperature = 80 °C
Performance achieved with collector circuit pump delivering 3000 l/h, and using a boiler of suitable power.

9
GENERAL
GENERAL
Performance of combination storage cylinder with boiler connected in:
CONFIGURATION A
KOMBISOLAR 3S Boiler
Description KOMBISOLAR 3S
430 550 750 1000
Domestic hot water produc-
tion (*) 3050 3300 3150 3200 l/h
Domestic hot water produc-
tion (**) 1970 2115 1980 2250 l/h
Water draw in 10 minutes with mean ∆T of 35°C and primary
storage cylinder at:
90°C 600 670 800 800 l
80°C 425 470 670 670 l
70°C 370 400 570 570 l
60°C 220 280 285 285 l
Useful non-solar volume
(Vbu) 320 430 565 705 l
(*) With ∆T = 35°C and primary temperature = 80°C.
Performance achieved with boiler of suitable power
congured for a ow rate of 3000 l/h.
(**) With ∆T = 35°C and primary temperature = 80°C.
Performance achieved with boiler of suitable power
congured for a ow rate of 1500 l/h.
CONFIGURATION B
KOMBISOLAR 3S Boiler
Description KOMBISOLAR 3S
430 550 750 1000
Domestic hot water produc-
tion (*) 2300 2400 2600 2650 l/h
Domestic hot water produc-
tion (**) 1650 1750 1900 1950 l/h
Water draw in 10 minutes with mean ∆T of 35°C and primary
storage cylinder at:
90°C 350 400 420 560 l
80°C 260 310 350 470 l
70°C 200 220 285 350 l
60°C 130 160 200 240 l
Useful non-solar volume
(Vbu) 190 235 325 435 l
(*) With ∆T = 35°C and primary temperature = 80°C.
Performance achieved with boiler of suitable power
congured for a ow rate of 3000 l/h.
(**) With ∆T = 35°C and primary temperature = 80°C.
Performance achieved with boiler of suitable power
congured for a ow rate of 1500 l/h.

10
GENERAL
GENERAL
CONFIGURATION C
KOMBISOLAR 3S Boiler
Description KOMBISOLAR 3S
430 550 750 1000
Domestic hot water produc-
tion (*) 690 790 1100 1270 l/h
(*) With ∆T = 35°C and primary temperature = 80°C.
Performance achieved with boiler of suitable power
congured for a ow rate of 3000 l/h.
CONFIGURATION D
KOMBISOLAR 3S Boiler
Description KOMBISOLAR 3S
430 550 750 1000
Domestic hot water produc-
tion (*) 610 640 750 750 l/h
(*) With ∆T = 35°C and primary temperature = 80°C.
Performance achieved with boiler of suitable power
congured for a ow rate of 3000 l/h.

11
GENERAL
GENERAL
Pressure drops
TOP COIL KOMBISOLAR 3S
PRESSURE DROP (mbar)
600
700
800
900
500
400
300
200
100
0
0 1000 2000 3000 4000 5000 6000
430 - 550
750 - 1000
FLOW RATE (l/h)
Pressure drops
KOMBISOLAR 3S BOTTOM COIL
PRESSURE DROP (mbar)
600
700
800
900
500
400
300
200
100
0
0 1000 2000 3000 4000
550
430
750
1000
FLOW RATE (l/h)

12
GENERAL
GENERAL
Pressure drops
KOMBISOLAR 3S DHW COIL
PRESSURE DROP (mbar)
600
700
500
400
300
200
100
0
0 1000 2000 3000 4000 5000
550
750-1000
430
FLOW RATE (l/h)

13
GENERAL
GENERAL
7 TYPICAL WATER SYSTEM SCHEMATICS
Water circuit with conventional boiler and biomass fuelled boiler
1 Pressure reducer-stabiliser
2 Ball valve with sampling cock
3 Sand lter
4 Water softener
5 Bypass pipe (normally closed)
6 Polyphosphate dosing unit
(DHW)
7 Sanitary water meter
8 Non-return valve
9 Mains water inlet
10 Filter and valve drain
11 Resin wash drain
12 Overow drain
13 Filter and valve drain
14 Manual bleed valve
15 Solar collector
16 Solar circuit disconnect valve
17 Safety tank
18 Solar module with solar con-
troller
19 KOMBISOLAR 3S (430-550)
20 Solar circuit expansion vessel
21 DHW user
22 Isolating valve
23 Thermostatic mixer valve
24 Safety valve
25 Bleed valve
26 DHW circuit expansion vessel
27 Filter
28 System cocks
29 Boiler with built-in pump
30 Non-return valve
31 Pump
32 CH expansion vessel
33 Laddomat 21
34 Thermal drain valve
35 Biomass fuelled boiler
36 Distribution manifold
37 MIX module
38 Thermostatic valve
39 Detent
40 Distribution manifold
41 Valve drain
42 Condensate outlet
43 Air inlet
44 Exhaust ue duct
45 Gas supply connection
1 2 3
4
2
5
6 7 8
8
9
10
11 12
13
14 15 15
16
17
18
20
45
19
21
22 23 22
22 22
22
22
22
24 24 25
25
25
25
24
22
22
42
32
26 32
27
28
34
41 35
29
43
44
36
3737
38
40
40
39
30
30
31 33
22
22
15

14
GENERAL
GENERAL
Water circuit with conventional boiler and biomass fuelled boiler
1 Pressure reducer-stabiliser
2 Ball valve with sampling cock
3 Sand lter
4 Water softener
5 Bypass pipe (normally closed)
6 Polyphosphate dosing unit
(DHW)
7 Sanitary water meter
8 Non-return valve
9 Mains water inlet
10 Filter and valve drain
11 Resin wash drain
12 Overow drain
13 Filter and valve drain
14 Manual bleed valve
15 Solar collector
16 Solar circuit disconnect valve
17 Safety tank
18 Solar module with solar con-
troller
19 KOMBISOLAR 3S (750-1000)
20 Solar circuit expansion vessel
21 DHW user
22 Isolating valve
23 Thermostatic mixer valve
24 Safety valve
25 Bleed valve
26 DHW circuit expansion vessel
27 Filter
28 System cocks
29 Boiler with built-in pump
30 Non-return valve
31 Pump
32 CH expansion vessel
33 Laddomat 21
34 Thermal drain valve
35 Biomass fuelled boiler
36 Distribution manifold
37 MIX module
38 Thermostatic valve
39 Detent
40 Distribution manifold
41 Valve drain
42 Condensate outlet
43 Air inlet
44 Exhaust ue duct
45 Gas supply connection
1 2 3
4
2
5
6 7 8
8
9
10
11 12
13
14 15 15
16
17
18
20
45
19
21
22 23 22
22 22
22
22
22
24
24 25
25
25
25
24
22
22
42
32
26 32
27
28
34
41 35
29
43
44
36
3737
38
40
40
39
30
30
31 33
22
22
15

15
GENERAL
GENERAL
9 RKOMBISOLAR 3S combination storage cylinders are de-
livered without pumps. Suitably rated pumps must be pro-
vided and installed separately. Flow rate from the solar col-
lector circuit depends on the type and number of collectors
installed. For further information, consult the manual for
the collectors.
9 The domestic hot water system MUST INCLUDE an expansion
vessel, safety valve, automatic vent valve and combination
storage cylinder drain cock.
9 Safety valves must be connected to a suitable collection and
drain system. The manufacturer declines all responsibility
for damage caused by water escaping from the safety valve.
9 The selection and the installation of the components of the
system is the responsibility of the installer, who must op-
erate in accordance with good practice and current Legis-
lation.
9 Circuits lled with anti-freeze must be tted with water dis-
connectors.
8 LOCATION OF SENSORS
RKOMBISOLAR 3S combination storage cylinders incorporate
sockets for solar controller and boiler sensors. Make sure that
these sensors are pushed rmly home into the sockets.
9 The installer is responsible for making all necessary con-
nections to the boiler and solar collectors. Installers must
use their expertise to ensure proper installation and func-
tioning in compliance with all applicable legislation.
Mod. 430-550
SC
SC
T
S
SRS
TTemperature gauge socket (10 mm)
STemperature sensor socket (16 mm)
SC Boiler temperature sensor socket (16 mm)
SRS Solar controller temperature sensor socket (16 mm)
Mod. 750-1000
SC
SC
T
S
SRS
TTemperature gauge socket (1/2")
STemperature sensor socket (8 mm)
SC Boiler temperature sensor socket (16 mm)
SRS Solar controller temperature sensor socket (16 mm)
9 In case of a probe, any electric junction between probe ca-
ble and extensions for the connection to the electric panel
must be soldered and protected with a sheath or a suitable
electric insulation.

16
GENERAL
GENERAL
9 OVERALL DIMENSIONS AND WATER FITTINGS
F
G
H
I
L
A
D
E
B
C
M
N
O
P
Q
R
S
T
U
M R
EAF
UAC
VS
RI/SB
CB
RA50
RA50
RA
RC2
MI
MC2
MC
UAC Domestic hot water outlet (Ø 1”1/4 F)
EAF Domestic cold water inlet (Ø 1”1/4 F)
MFlow from solar collector (Ø 1” M)
RReturn to solar collector (Ø 1” M)
MC Outlet from boiler (Ø 1”1/4 F)
MC2 Flow from second boiler (Ø 1” F)
MI Heating system inlet (Ø 1” F)
RC2 Return to second boiler (Ø 1” F)
RA Return to boiler (Ø 1”1/4 F)
RA50 Return to boiler (water 50°C) (Ø 1” F)
CB Buffer tank charging (Ø 1” F)
RI/SB Heating system return / Inertial storage cylinder drain
(Ø 1”1/4 F)
VS Vent valve tting (Ø 1” F)
DESCRIPTION KOMBISOLAR 3S
430 550
A307 525 mm
B815 1005 mm
C945 1025 mm
D1042 1252 mm
E1343 1688 mm
F377 377 mm
G208 208 mm
H380 380 mm
I490 520 mm
L610 635 mm
M730 855 mm
N865 920 mm
O845 995 mm
P980 1135 mm
Q1090 1340 mm
R1208 1499 mm
S1320 1615 mm
T1442 1787 mm
U1635 1985 mm
9 We recommend that you install isolating valves in the outlet and return lines.
9 Check the efciency of the seals when lling/relling the buffer tank.

17
GENERAL
GENERAL
O
RI/SB
CB
RA50
RA
RC2
MI
MC2
MC
A
EAF
UAC
VS
N
M
O
P
Q
R
S
T
M R
D
E
B
C
G
H
I
L
UAC Domestic hot water outlet (Ø 1”1/4 F)
EAF Domestic cold water inlet (Ø 1”1/4 F)
MFlow from solar collector (Ø 1” M)
RReturn to solar collector (Ø 1” M)
MC Outlet from boiler (Ø 1”1/4 M)
MC2 Flow from second boiler (Ø 1” F)
MI Heating system inlet (Ø 1” F)
RC2 Return to second boiler (Ø 1”F)
RA Return to boiler (Ø 1”1/4 F)
RA50 Return to boiler (water 50°C) (Ø 1” F)
CB Buffer tank charging (Ø 1” F)
RI/SB Heating system return / Inertial storage cylinder drain
(Ø 1”1/4 M)
VS Vent valve tting (Ø 1” F)
DESCRIPTION KOMBISOLAR 3S
750 1000
A365 365 mm
B870 950 mm
C950 1020 mm
D1075 1190 mm
E1420 1745 mm
F495 495 mm
G75 75 mm
H345 345 mm
I435 435 mm
L600 600 mm
M855 925 mm
N900 980 mm
O995 1110 mm
P1090 1210 mm
Q1260 1375 mm
R1360 1475 mm
S1705 2030 mm
T1845 2170 mm
9 We recommend that you install isolating valves in the outlet and return lines.
9 Check the efciency of the seals when lling/relling the buffer tank.

18
INSTALLER
INSTALLER
10 UNPACKING THE PRODUCT
RKOMBISOLAR 3S combination cylinders are supplied in a
single package on a wooden pallet.
The insulation and the lining components of the models 750
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".
The following items are delivered in a plastic bag inside the
packaging:
−Instruction manual
−Bar code label
−Hydraulic test certicate
−Energy label (to be applied to device upon installation)
−No. 4 adjustable feet to be mounted during installation
(for models 750 - 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.
11 HANDLING
Make sure that any lifting equipment is of adequate capacity to
lift and move the combination cylinder.
Remove the brackets (1) to free the combination cylinder from
the pallet.
To lift the combination cylinder, remove the plug (2) and screw
an eyebolt (Ø 1”) of suitable capacity for the weight into the hole
(3).
1
2
3
1
1
If suitable equipment is not on hand to lift the combination cyl-
inder off the pallet using the eyebolt, proceed as follows.
−Place a platform of about half the height of the pallet
near the combination cylinder. Make sure the platform is
able to support the weight of the combination cylinder
−Remove the brackets (1) then carefully rotate and slide
the combination cylinder off the pallet on to the platform
−Make sure that the combination cylinder is perfectly sta-
ble, and then remove the pallet
−Carefully rotate and slide the combination cylinder off the
platform on to the oor
−Remove the platform and position the combination cyl-
inder as required.
1
1
Adjust the feet to ensure that the storage cylinder is perfectly
level.
17
9 Wear suitable personal protective equipment and use suit-
able safety devices.
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 com-
pliance with applicable legislation.
Installer

19
INSTALLER
INSTALLER
12 ASSEMBLY OF THE INSULATION AND THE LINING
KOMBISOLAR 3S 750 - 1000
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.
1
1
1
2
1
2
1
2
2
3
4
4
5
6
Proceed as follows:
−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 re-
quired to be closed completely
−Place the front protection plate (2) correctly on the at-
tachments
−Put the washers on the attachments (3)
−Place the rear protection plate by closing the interlock-
ing aps (4) without closing completely (leave one tooth
open)
−Apply the upper insulation (5) and the upper cover (6) (in
order to insert the cover, exert a light and homogeneous
pressure)
−Close the interlocking aps (4) completely, which were
previously left with an open tooth
−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.
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 com-
pliance with applicable legislation.
13 PLACE OF INSTALLATION
RKOMBISOLAR 3S combination storage cylinders can be in-
stalled in any room where there is no specic requirement for
an electrical protection rating higher than IP X0D.
≥ 0,4 m
≥ 0,6 m
≥ 0,3 m ≥ 0,4 m
9 Respect the minimum specied installation distances to
ensure correct installation and access for maintenance.
13.1 Installation in older systems and systems
requiring modernisation
When installing RKOMBISOLAR 3S combination storage cylin-
ders in old systems or systems requiring modernisation, always
perform the following checks.
−Make sure that the system is tted with safety and con-
trol devices in accordance with applicable legislation and
standards
−Make sure that the central heating circuit has been
ushed out to remove all sludge and lime scale, and has
been vented and seal tested
−Make sure that a suitable water treatment system is in-
stalled if the quality of the supply/recirculation water so
demands (refer to the reference values listed in the table
alongside).
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

20
TECHNICAL ASSISTANCE SERVICE
TECHNICAL ASSISTANCE SERVICE
14 PUTTING INTO SERVICE
It is essential to perform the following checks before starting up
or testing the functioning of the combination cylinder. In par-
ticular, check that:
−The supply cocks in the domestic water circuit are all open
−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 ushed out
and lled with water-glycol mix, and all air has been
bled out of the circuit (see the manual for the solar col-
lectors)
−Start up the combination cylinder’s auxiliary heating
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.
9 The domestic hot water tank must be lled and pressur-
ised before the inertial storage cylinder is lled.
Solar heating circuit
Once the system has been started up, perform the following
checks.
−Check that the ow rate in the solar collector circuit is
equivalent to 30 l/h for each m2of collector area
−Check that the solar collector circuit has been properly
bled
−Check that the pressure of the system when cold is ap-
proximately 3 bar
−Check that the safety valve operates at 6 bar
−All the pipes in the water circuit have been insulated in
conformity to relevant standards.
1
2
3
4
5
06
Heating circuit
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.
−Make sure that the boiler and solar collectors connect-
ed 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.
TechnicalAssistanceService