Riello ALUDOMUS SOLAR KV/200 20 ISC SOLAR Manual

cod. Doc-0077232 rev. 0 10/15
ALUDOMUS SOLAR KV/200 20 ISC SOLAR
EN INSTALLATION AND MAINTENANCE MANUAL

MODEL CODE
ALUDOMUS KV/200 20 ISC SOLAR 20101209
ALUDOMUS SOLAR Rboilers conform to the following directives:
−Low Voltage Directive 2006/95/EEC
−Electromagnetic Compatibility Directive 2004/108/EEC
−Boiler and Condensation UNI EN 677 standard.
−Gas Appliances Directive 2009/142/EEC
−Boiler Efciency Directive 92/42/EEC
−Ecodesign Directive 2009/125/CE for energy-related products
−Energy Labelling Directive 2010/30/EU
−Delegated Regulation (UE) N. 811/2013
−Delegated Regulation (UE) N. 813/2013
−Delegated Regulation (UE) N. 814/2013
For a complete list of accessories and details of their compatibility, refer to the Catalogue.
RANGE
CONFORMITY
ACCESSORIES
2

Dear heating engineer,
Congratulations on having chosen a ALUDOMUS SOLAR Rboiler. You have selected a modern, quality product that is
designed to give dependable, efcient and safe service and to provide comfort in the home for many years to come.
This manual provides information that is essential to the installation of the appliance. Used in conjunction with your
own knowledge and expertise it will enable you to install the appliance quickly, easily, and correctly.
Once again, please accept our thanks and our congratulations on your choice of product.
Riello S.p.A.
3

This manual, Code. Doc-0077232 - Rev. 0 (10/15) is made
up of 116 pages.
CONTENTS
GENERAL ................................... 5
General safety information ...........................5
Precautions .......................................5
Product description .................................6
Safety devices .....................................6
Identication......................................7
Data plate ........................................7
Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Technical specications ..............................9
Water circuit ..................................... 12
Pumps.......................................... 14
Wiring diagram ................................... 18
Control panel.....................................20
Room unit .......................................26
INSTALLER .................................. 32
Unpacking the product ............................. 32
Dimensions and weight.............................32
Handling ........................................33
Place of installation ................................33
Installation in older systems and systems requiring
modernisation ................................34
Water in central heating systems ......................34
Water connections.................................36
Draining the condensate ............................38
Installing the room unit.............................38
Electrical connections ..............................39
Outdoor sensor connections ......................... 41
Gas connection ...................................42
Flue gas outlet and combustion air intake...............42
Filling and draining the system .......................44
THECNICAL ASSISTANCE SERVICE................... 47
Preparing for initial start-up ......................... 47
Initial start-up.................................... 47
Checks during and after initial start-up.................49
Temporary shutdown...............................50
Preparing for extended periods of disuse ...............50
Maintenance ..................................... 51
PREMIX gas burner ................................. 51
Setting the electrodes ..............................54
Settings .........................................54
Setting combustion parameters.......................55
Conversion from one gas type to another ............... 57
Setting functioning parameters .......................60
Error codes ......................................65
Complete list of parameters ..........................79
Disassembling and cleaning the boiler ................ 109
Troubleshooting...................................111
Useful information.................................113
The following symbols are used in this manual:
9 CAUTION = Identies actions that requi-
re caution and adequate preparation
0 STOP = Identies actions that you MUST NOT do
4

9 As soon as you open the packaging, check imme-
diately that the contents are all present and unda-
maged. Contact the R.
9 This system must be installed by a legally qualied
heating engineer. On completion of the installation,
the installer must issue the owner with a declara-
tion of conformity conrming 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 The boiler must only be used for the purpose spe-
cied by ALUDOMUS SOLAR and for which it is desi-
gned. The manufacturer declines all responsibility,
contractual or other, for damage to property or in-
jury to persons or animals caused by improper in-
stallation, adjustment, maintenance or use.
9 If you notice any water leaking from the boiler, di-
sconnect it immediately from the mains electricity
supply, shut off the water supply, and notify your
local R Technical Assistance Centre or a qualied
heating engineer immediately.
The operation of any appliance that uses fuel, electrical
power and water demands that a number of funda-
mental safety precautions be respected. In particular:
0 Do not allow children or inrm persons to operate
the boiler unsupervised.
0 Do not operate any electrical devices or equipment,
including switches or domestic appliances, etc., if
you can smell fuel or fumes. If you detect any su-
spicious smells:
−Ventilate the room by opening all doors and win-
dows;
−Close the fuel shut-off cock;
−Report the fault immediately to the RTechni-
cal Assistance Service or a professionally quali-
ed heating engineer.
0 Do not touch the boiler when barefoot or wet.
0 Never clean or service the boiler without rst di-
sconnecting it from the mains electricity supply by
turning it off at the mains power switch off and at
the control panel.
0 Do not tamper with or adjust the safety or control
devices without prior authorisation and instruc-
tions from the boiler's manufacturer.
9 Periodically check that operating pressure in the-
water circuit is over 1 bar. If water pressure is consi-
stently low, contact R's Technical Assistance Ser-
vice or a professionally qualied heating engineer.
9 If the boiler is not going to be used for an extended
period of time, proceed as follows to prepare it for
shut-down:
−Turn the boiler OFF at the control panel.
−Turn the main power switch OFF.
−Close the fuel cock and heating circuit water cock.
−Drain the central heating circuit if there is any risk
of freezing.
9 The boiler must be serviced at least once a year.
9 If the boiler is destined to heat low temperatu-
re (under-oor) heating systems, it must be tted
with an accessory mixer valve kit.
9 This instruction manual is an integral part of the
boiler. It must be kept safe and must ALWAYS ac-
company the boiler, even if it is sold to another
owner or transferred to another user or to another
installation. If you damage or lose this manual, or-
der a replacement immediately from your local R
Technical Assistance Centre.
1 GENERAL
1.1 General safety information
1.2 Precautions
0 Never pull, disconnect, or twist the electrical cables
coming from the boiler even if it is disconnected
from the mains electricity supply.
0 Do no obstruct or restrict the vents in the room
where the appliance is installed. Adequate ventila-
tion is essential for correct combustion.
0 Do not expose the boiler to the elements. It is not
designed to work outdoors and is not tted with
the necessary automatic anti-frost systems to do so.
0 Do not switch the boiler off if outside temperature
drops below ZERO (risk of freezing).
0 Do not leave ammable substances or containers in
the room where the boiler is installed.
0 Do not dispose of packaging material into the en-
vironment, or leave it within the reach of children,
since it can become a potential hazard. Dispose of
packaging material in compliance with applicable
legislation.
5
GENERAL

ALUDOMUS SOLAR R boilers are high efciency, low
temperature, condensing boilers for the production of
hot water for central heating and domestic hot water
systems. They incorporate a 200 litre double coil solar
storage cylinder and are equipped as standard with
a water return group for use in conjunction with so-
lar panels. ALUDOMUS SOLAR boilers incorporate a low
water content, low pressure drop, compact, monobloc,
aluminium heat exchanger, and a premixed microa-
me burner controlled by an electronic control panel, all
enclosed within a robust free-standing casing. They fe-
ature sealed combustion chambers and, depending on
what ue accessories are tted, can be classed as B23,
B23P, B53, B53P, C13, C33, C43, C53, or C63 appliances. The
fan extracts ue gases and aspirates comburent air from
outdoors, and is continuously controlled by the electro-
nic control card.
ALUDOMUS SOLAR boilers are equipped with the fol-
lowing safety devices:
A safety valve that opens if pressure in the heating cir-
cuit rises above the 3 bar threshold.
A safety valve that opens if pressure in the DHW circuit
rises above the 8 bar threshold.
A safety valve that opens if pressure in the solar
circuit rises above the 6 bar threshold.
A heat exchanger safety thermostat that forces the
boiler to perform a safety shutdown if circuit tempe-
rature exceeds the preset safety threshold (100°C). The
sensor used to monitor circuit temperature is located on
the central heating ow pipe.
An electronic safety system that monitors ow rate
through the central heating system using two sensors,
one on the ow pipe and the other on the return pipe,
plus a water pressure switch. This safety system forces
the boiler to perform a safety shutdown if ow rate is
insufcient or not detected.
A ue gas thermostat in the bottom of the heat exchan-
ger that triggers an error condition if ue gas tempera-
ture exceeds 90°C. A oat device is also installed in the
siphon to prevent ue gases escaping from the conden-
sate drain.
The characteristics of the horizontal heat exchanger and
of the burner ensure an excellent level of performance.
The combustion chamber and the heat exchange area
are designed to keep temperature low over the burner
surface, thus minimising emissions, maximising com-
bustion efciency and improving ignition reliability
ALUDOMUS SOLAR Rboilers come complete with safe-
ty valves, vent and bleed valve, expansion vessels, drain
cocks, system ll cock and pumps for the central hea-
ting circuit, storage cylinder and solar collector circuit.
Additional water control valves and electrical controllers
can be used to manage automatically up to 3 zones, the
rst direct and the other two mixed.
A fan safety system that uses a Hall effect speed sensor
to continuously monitor fan speed.
9 The intervention of a safety device indicates a po-
tentially dangerous malfunction in the system, and
means that you must contact R's Technical Assi-
stance Service immediately.
You may attempt to restart the boiler after a short delay
(see Preparing for initial start-up).
0 Never start the boiler up even for a short period if
the safety devices are not functioning correctly or
have been tampered with.
9 Safety devices must only be replaced by R’s
Technical Assistance Service using original spare
parts. Refer to the spare parts catalogue supplied
with the boiler.
Always check that the boiler is functioning correctly after
any repairs.
1.3 Product description
1.4 Safety devices
6
GENERAL

−Data plate
This lists the appliance’s technical specifications and performance data.
−Gas plate
This is applied near the data plate and species the type
of gas used by the boiler, and the country in which the
boiler is destined for use.
G20 - 20 mbar
0694 08
/
0694BS1412
ALU DOMUS KV/200 20 ISC SOLAR
X4DevitceriDnaeporuE02
92/42/EEC:
η =
η =
η =
N°
230 V ~ 50Hz W
Pms= bar T = °C
Qn(min)=
Pn(min)=
NOx: 5
B23-P,B53-P,C13,C33,C43,C53,C63
IP
IT FR BE CH
T067657GEII2H3P
I2E(S)B
II2Esi3P
II2H3P
CH: G20=20mbar G31=37mbar
BE: G20=20mbar G25=25mbar
FR:G20=20mbarG25=25mbarG31=37mb
IT: G20=20mbar G31=37mbar
P.min.G20= mbar
Categoria :
Qn(max)=
Pn(max)=
Cod.
kW
kW
kW
kW
KESSEL GEREGELT FÜR
PAYS DE DESTINATION:
Categorie:
Kategorie :
Combustible:
Brennstoff :
Combustibile :
Brandstof:
PAESE DI DESTINAZIONE:
BESTIMMUNGSLAND:
LAND VON BESTEMMING:
CALDAIA REGOLATA PER:CHAUDIERE REGLEE POUR:
VERWARMINGSKETEL INGESTELD OP:
Pmw= bar T = °C
D = l/min
kW
kW
kW
kW
RIELLO S.p.A.
Via Ing.Pilade Riello 7
37045 Legnago (VR) - ITALY
Caldaia a condensazione - Chaudière à condensation - Brennwertkessel - Condenserende verwarmingsketel
C63,C63x verboden in België - C63,C63x défendu en Belgique
G20 - 20 mbar
0694 08
/
0694BS1412
ALU DOMUS
X0DevitceriDnaeporuE02
92/42/EEC:
η =
η = η =
N°
230 V ~ 50Hz W
Pms= bar T = °C
Qn(min)= Pn(min)=
NOx: 5
B23-P,B53-P,C13,C33,C43,C53,C63
IP
IT FR BE CH
T067657GEII2H3P
I2E(S)B
II2Esi3P
II2H3P
CH: G20=20mbar G31=37mbar
BE: G20=20mbar G25=25mbar
FR:G20=20mbarG25=25mbarG31=37mb
IT: G20=20mbar G31=37mbar
P.min.G20= mbar
Categoria :
Qn(max)=
Pn(max)=
Cod.
kW
kW kW
kW
KESSEL GEREGELT FÜR
PAYS DE DESTINATION:
Categorie:
Kategorie :
Combustible: Brennstoff :
Combustibile :
Brandstof:
PAESE DI DESTINAZIONE:
BESTIMMUNGSLAND:
LAND VON BESTEMMING:
CALDAIA REGOLATA PER:CHAUDIERE REGLEE POUR:
VERWARMINGSKETEL INGESTELD OP:
Pmw= bar T = °C
D = l/min
kW kW kW kW
RIELLO S.p.A. Via Ing.Pilade Riello 7 37045 Legnago (VR) - ITALY
Caldaia a condensazione - Chaudière à condensation - Brennwertkessel - Condenserende verwarmingsketel
C63,C63x verboden in België - C63,C63x défendu en Belgique
R ALUDOMUS SOLAR boilers are identied by two plates:
9 If the plates or other means for clearly identifying the product have been tampered with, removed or are missing,
the installation and servicing operations will be much more difcult.
Domestic hot water section
Central heating
Qn Rated heat input
Pn Rated useful heat output
IP Index of protection
P.min Minimum pressure
Pmw Maximum operating pressure,
DHW system
Pms Maximum operating pressure,
CH system
T Temperature
η Efciency
D Specic ow rate
NOx
NOx class
G20 - 20 mbar
0694 08
/
0694BS1412
ALU DOMUS KV/200 20 ISC SOLAR
X4DevitceriDnaeporuE02
92/42/EEC:
η =
η =
η =
N°
230 V ~ 50Hz W
Pms= bar T = °C
Qn(min)=
Pn(min)=
NOx: 5
B23-P,B53-P,C13,C33,C43,C53,C63
IP
IT FR BE CH
T067657GEII2H3P
I2E(S)B
II2Esi3P
II2H3P
CH: G20=20mbar G31=37mbar
BE: G20=20mbar G25=25mbar
FR:G20=20mbarG25=25mbarG31=37mb
IT: G20=20mbar G31=37mbar
P.min.G20= mbar
Categoria :
Qn(max)=
Pn(max)=
Cod.
kW
kW
kW
kW
KESSEL GEREGELT FÜR
PAYS DE DESTINATION:
Categorie:
Kategorie :
Combustible:
Brennstoff :
Combustibile :
Brandstof:
PAESE DI DESTINAZIONE:
BESTIMMUNGSLAND:
LAND VON BESTEMMING:
CALDAIA REGOLATA PER:CHAUDIERE REGLEE POUR:
VERWARMINGSKETEL INGESTELD OP:
Pmw= bar T = °C
D = l/min
kW
kW
kW
kW
RIELLO S.p.A.
Via Ing.Pilade Riello 7
37045 Legnago (VR) - ITALY
Caldaia a condensazione - Chaudière à condensation - Brennwertkessel - Condenserende verwarmingsketel
C63,C63x verboden in België - C63,C63x défendu en Belgique
1.6 Data plate
1.5 Identication
7
GENERAL

1.7 Layout
5
2
1
3
4
RIGHT SIDE VIEW FRONT VIEW
13
15
16
14
12
10
11
9
8
17
26
24
25
28
27
23
21
19
20
18
36
35
37
3
34
26
42
40
41
7
18
44
43
45
6
7
48
9
11
10
47
12
15
16
46
17
32
33
28
4
27
24
23
27
30
50
49
1 Top panel
2 Top front panel
3 Fan
4 Direct CH zone pump
5 Control panel
6 LMU-RVS control cards
7 CH circuit expansion vessel (12 litres)
8 CH system ll cock
9 Thermostatic mixer valve
10 Solar circuit non-return valve
11 Solar circuit pump
12 Flow regulator
13 Solar circuit safety valve (6 bar)
14 Bottom front panel
15 Storage cylinder temperature sensor socket (bottom)
16 DHW circuit safety valve (8 bar)
17 Storage cylinder drain cock
18 200 litre storage cylinder
19 DHW circuit expansion vessel (8 litres)
20 Storage cylinder temperature sensor socket (top)
21 Condensate drain siphon
22 Condensate drain pipe
23 CH circuit drain cock
24 Fittings for second mixed CH zone (accessory)
25 Distribution manifold insulation
26 Storage cylinder circuit non-return valve
27 Fittings for rst mixed CH zone (accessory)
28 Distribution manifold
29 Direct CH zone non-return valve
30 Manual bleed valve
31 Vent valve drain bowl
32 Automatic vent valve
33 CH circuit safety valve (3 bar)
34 Flue gas exhaust tting
35 Gas valve
36 CH ow temperature sensor
37 Ignition transformer
38 Ignition electrode and detection sensor
39 Storage cylinder pump
40 Burner insulation
41 CH return temperature sensor
42 LH side panel
43 Magnesium anode
44 Storage cylinder ange
45 RH side panel
46 Solar circuit pressure gauge (8 bar)
47 CH circuit pressure gauge (6 bar)
48 Flue gas analysis socket
49 Comburent air intake tting
50 Water pressure switch
29
51
30
31
32
33
38
39
22
8
GENERAL

1.8 Technical specications
Description ALUDOMUS
KV/200 20 ISC SOLAR
Type of boiler
condensing boiler for
central heating
B23-B23P-B53-B53P-C13-
C33-C43-C53-C63
Fuel IT CH
G20-G31 G20-G31
Class of boiler IT CH
II 2H3P II 2H3P
Maximum rated heat input at furnace referred to HVC (LCV) 22,2 (20) kW
Minimum rated heat input at furnace referred to HVC (LCV) 5,6 (5) kW
Rated heat input at furnace referred to HVC 22,2 kW
Rated heat input at furnace referred to LCV 20 kW
Useful (rated) heat output 19 kW
Maximum useful heat output (60-80°C) P4 19,4 kW
Maximum useful heat output (50-30°) 20,3 kW
30% heat output with return at 5,8 kW
Minimum useful heat output (80-60°) 4,8 kW
Heat energy efficiency class A
Energy efciency class DHW B
Seasonal energy efciency in central heating
mode hs91 %
Efciency at rated heat input in
high temperature mode (HCV) h4Useful Pn
(60-80°C) 87,5 %
Efciency at 30% rated heat input
in low temperature mode (HCV) h1Useful 30%
of Pn 97,4 %
Energy efciency in DHW mode hwh 59 %
Storage cylinder charging prole XL
Heat loss in standby mode Pstby 39 W
Combustion efciency 97,8 %
Annual energy consumption QHE 61 GJ
Daily electrical energy consumption Qelec 0,411 kWh
Annual electrical power consumption AEC 90,009 kWh
Daily fuel consumption Qfuel 35,179 kWh
Annual fuel consumption AFC 24,810 GJ
Noise (sound power) LWA 65 dB(A)
Emissions at maximum heat input
Nox (referred
to HCV) 31 mg/kWh
CO2 (**) 9,2 %
CO w.a.<
(**) 30 mg/kWh
∆T ue gas 66,5 °C
Emissions at minimum heat input CO2 (**) 9,15 %
∆T ue gas 54 °C
Flue gas mass ow rate (*) 0,009 Kg/s
Gas ow rate (min - max) (*) 0,7-2,9 Sm3/h
Maximum operating pressure 3bar
Safety thermostat trip temperature 100 °C
Maximum operating temperature 80 °C
Minimum CH return temperature (***) 30 °C
Boiler water temperature setting range 30-80 °C
Boiler water capacity 1,6 l
Volume of expansion vessel (CH) 12 l
Precharge of expansion vessel (CH) 1,5 bar
Condensate production at 50/30°C 1l/h
Power supply 230-50 V-Hz
Absorbed electric power (max) X0D IP
9
GENERAL

Description ALUDOMUS
KV/200 20 ISC SOLAR
Absorbed electric power (max) 133 W
Absorbed power supply at full load Elmax 80 W
Absorbed power supply at partial load Elmin 24 W
Absorbed power supply standby PSB P sb 15 W
(*) Temp.: 15°C ; Press.: 1013 mbar.
(**) Parameters refer to 0% residual O2 in the products of combustion and atmospheric pressure at sea level.
(***) Only if ow temperature ≥50°C.
STORAGE CYLINDER CHARACTERISTICS ALUDOMUS
KV/200 20 ISC SOLAR
Type of storage cylinder Vitried
Cylinder layout Vertical
Heat exchanger layout Vertical
Maximum power input to top coil 20 kW
Maximum power input to bottom coil 29 kW
Cooling rate 0,38 Wh/
K.l.24h
Losses on shutdown of storage cylinder 144 W
DHW temperature setting range 20÷65 °C
Storage cylinder capacity 200 l
Useful non-solar volume (Vbu) 100 l
Top coil water capacity 4,1 l
Bottom coil water capacity 5,7 l
Top coil heat exchange surface area
0,68 m2
Bottom coil heat exchange surface area 0,94
m2
Domestic hot water production with ∆T 25°C 11,4 l/min
Domestic hot water production with ∆T 35°C 8,1 l/min
Water draw in 10 minutes with storage cylinder at 48°C (**) 148 l
Water draw in 10 minutes with storage cylinder at 60°C (*) 200 l
DHW draw, boiler + solar circuit at 85°C (DHW user point at 43°C) 23 x 23 l/min x
min
DHW draw, boiler + solar circuit at 65°C (DHW user point at 43°C) 21,5 x 20 l/min x
min
Specic ow rate (EN625) 20,6 l/min
Replenishment time (∆t 35°C) 18,4 l/min
Maximum operating pressure of storage cylinder 8bar
Volume of expansion vessel (DHW) 8 l
Precharge of expansion vessel (DHW) 3,5 bar
(*) Inlet water temperature 13°C. Average water discharge temperature 43°C.
10
GENERAL

BOILER ONLY DHW performance (winter months with no
contribution from solar panels)
STORAGE CYLINDER
CHARACTERISTICS
ALUDOMUS SOLAR
KV/200 20 ISC
SOLAR
Continuous water draw
with ∆T 25°C and Vmix
setting = MAX
11,4 l/min
Continuous water draw
with ∆T 35°C and Vmix
setting = MAX
8,1 l/min
Water draw in 10 minutes
with storage cylinder at
60°C(*)
and Vmix setting = MAX
200 l
Water draw in 10 minutes
with storage cylinder at
48°C(*)
148 l
Specic ow rate (EN625)
with Vmix setting = 3.1 20,6 l/min
Replenishment time 20 min
(*) Inlet water temperature 13°C. Average water dischar-
ge temperature 43°C.
BOILER + SOLAR DHW performance
STORAGE CYLINDER
CHARACTERISTICS
ALUDOMUS SOLAR
KV/200 20 ISC
SOLAR
Continuous water
draw with storage
cylinder at 85°C and
Vmix setting = 4 (52°C)
23 x 23 l/min x min
Continuous water
draw with storage
cylinder at 65°C and
Vmix setting = 4 (52°C)
21,5 x 20 l/min x min
(*) Inlet water temperature 13°C. Average water dischar-
ge temperature 43°C.
THERMOSTATIC MIXER VALVE
Knob position MIN 1 2 3 4 5 MAX
Temperature (°C) -30 38 42 52 65 -
IAF
ACS
IAF
ACS
RS
MS
IAF
ACS
IAF
ACS
RS
MS
Cold water
DHW
user points
Domestic hot water from the
SOLAR STORAGE CYLINDER
11
GENERAL

G
MI
34
6
RI
11
9
8
7
2
10
ACS
RS
RC
IAF
MS
1
1
1
12
16
14
17
18
19
20
22
23
13
15
21
24
25
24 24
1 Non-return valve
2 Safety valve (3 bar)
3 Manual bleed valve
4 Automatic vent valve
5 Central heating pump
6 Distribution manifold
7 Burner
8 Boiler body
9 Condensate drain siphon
10 CH drain cock
11 Storage cylinder pump
12 Pressure gauge (6 bar)
13 CH system ll cock
14 Expansion vessel (12 litres)
15 Storage cylinder
16 Solar heating system pump
17 Flow meter
18 Pressure gauge (8 bar)
19 Safety valve (6 bar)
20 Storage cylinder drain cock
21 DHW circuit safety valve (8 bar)
22 Expansion vessel (8 litres)
23 Thermostatic valve
24 Solenoid valves or shut-off valves
25 Bypass detent
RI CH return
MI CH ow
GGas supply
ACS Domestic hot water outlet
RC DHW recirculation tting
IAF Domestic cold water inlet
RS Solar collector return
MS Solar collector outlet
1.9 Water circuit
9 If manifolds incorporating solenoid valves or shut-off valves are used, these should also be equipped with a
hydraulic detent system.
9 The hydraulic detent device chosen must be suitable for the maximum pump head for that zone.
12
GENERAL

1 Safety thermostat
2 Flue gas thermostat
3 Flue gas probe
4 CH ow temperature sensor
5 CH return temperature sensor
6 Storage cylinder temperature sensor (boiler)
7 Storage cylinder temperature sensor (solar system)
1
2
5
6
7
4
3
CHARACTERISTICS OF CH FLOW AND RETURN AND STORAGE CYLINDER TEMPERATURE SENSORS
Measured temperature (°C) - Resistance (Ω).
T (°C) R (Ω)T (°C) R (Ω)T (°C) R (Ω)T (°C) R (Ω)
-30.0 175203 30.0 8059 90.0 915 150.0 183
-25.0 129289 35.0 6535 95.0 786 155.0 163
-20.0 96360 40.0 5330 100.0 677 160.0 145
-15.0 72502 45.0 4372 105.0 586 165.0 130
-10.0 55047 50.0 3605 110.0 508 170.0 117
-5.0 42158 55.0 2989 115.0 443 175.0 105
0.0 32555 60.0 2490 120.0 387 180.0 95
5.0 25339 65.0 2084 125.0 339 185.0 85
10.0 19873 70.0 1753 130.0 298 190.0 77
15.0 15699 75.0 1481 135.0 262 195.0 70
20.0 12488 80.0 1256 140.0 232 200.0 64
25.0 10000 85.0 1070 145.0 206
13
GENERAL

0
1
2
3
4
5
Q [m³/h]
0,0 0,2 0,4 0,6 0,8 1,0 1,2 1,4 1,6 1,8 2,0 2,2 2,4 2,6 2,8 3,0 3,2 3,4
0,0 0,2 0,4 0,6 0,8 1,0 1,2 1,4
Q [m³/h]
6
7
[m]
H
0
10
20
30
40
50
60
[kPa]
p
0,0 0,1 0,2 0,3 0,4 0,5 0,60,7 0,80,9 1,0 Q [l/s]
0
10
20
30
40
50
[W]
P1
Residual head
Flow-rate
Curves are referred to a water density of 983.2 Kg/m3, a temperature of +20°C, and a kinematic
viscosity of 0.474 mm2/s (0.474 cSt).
1.10 Pumps
CH PUMP CURVE
TECHNICAL DATA FOR CH/STORAGE CYLINDER PUMP
DESCRIPTION ErP ready 2015
Electrical consumption 53 W
EEI Part 3 (*) ≤0.20
P L,Avg (**) ≤24 W
Minimum pressure at pump suction inlet 0.5 bar
(*) Energy efciency index according to ErP 2015 (Commission regulations 641/2009 and 622/2012)
(**) Average annual electricity consumption according to ErP 2015 (Commission regulations 641/2009 and 622/2012)
14
GENERAL

The boiler's pump is ErP 2015 Ready, and suitable for
use in central heating only/domestic hot water applica-
tions. The pump can be controlled by an external PWM
signal and has 4 different pressure curves for central
heating applications.
When controlled by a PWM signal, pump speed varies
according to the frequency of the incoming PWM signal,
modulating head/ow rate on the basis of the selected
curve.
In the absence of a PWM signal, the pump runs at full
speed and delivers the head/ow rate determined by
the selected curve. Each curve is characterised by a
maximum head expressed in metres.
User interface
The user interface features one button (1), one red/
green LED (2) and four yellow LEDs.
LED(2)
BUTTON (1)
Via this interface, users can access:
−Functioning (performance display) mode. Pump
performance is displayed during functioning as
a % of current draw with respect to rated load.
Alarm conditions can be seen from the colour of
LED (2).
−Setting mode. Setting mode is accessed by
pressing the button (1), and is used to select the
pump curve.
ADJUSTING THE PUMP
Display Meaning % power
LED 1 ashing green Stand-by (only
with PWM
control)
0
LED 1 green and LED 2
yellow, both lit
Low load 0-25
LED 1 green and LEDs 2,
3 yellow, all lit
Low-medium
load
25-50
LED 1 green, LEDs 2, 3,
4 yellow, all lit
Medium-high
load
50-75
LED 1 green, LEDs 2, 3,
4, 5 yellow, all lit
High load 75-100
PUMP LOAD CURVE
100 %
75 %
50 %
25 %
Functioning mode
A) Performance display
When the pump is functioning, LED 1 is green. The four
yellow LEDs indicate the instantaneous power draw as
shown in the table above. In functioning mode, all ac-
tive LEDs are lit (not ashing) to differentiate this con-
dition from setting mode. If the pump is stopped by the
external control signal, LED 1 ashes green.
B) Alarm display
If the pump detects one or more alarm conditions, LED 1
changes from green to red. When an alarm is active, the
LEDs indicate the type of alarm as shown in the follow-
ing table. If more than one alarm is active at the same
time, the LEDs only show the alarm condition with the
highest priority. Alarm priority follows the order of the
table.
When no alarm is active, the user interface automati-
cally displays pump performance.
15
GENERAL

Display Meaning Function Action
LED 1 red and LED 5 yellow,
both lit
The pump rotor is blocked. The pump automatically
attempts to start every 1.5
seconds.
Wait or check that the
pump rotor is free to ro-
tate.
LED 1 red and LED 4 yellow,
both lit
Supply voltage too low. Indication only. The pump
continues to function.
Check the voltage of the
power supply.
LED 1 red and LED 3 yellow,
both lit
Electronic controller error. The pump has stopped
because supply voltage is
too low or because an error
has occurred in the inter-
nal electronic controller.
Check the voltage of the
power supply or replace
the pump.
SETTING MODE
A) Setting display
switch from performance display to setting display,
press button (1). The LEDs shows the current setting. See
the following table for the meaning of the LED display.
Setting display mode shows the type of pump control or
the currently selected pump curve. Settings cannot be
changed in performance display mode. After 2 seconds,
the display returns to performance display mode.
If LED 1 is red, it indicates that an alarm is active or that
the the pump is being controlled by an external (PWM)
signal.
LEDs 2 and 3 show the type of internal control while LEDs
4 and 5 show the currently selected curve (1, 2, 3 or 4).
All these LEDs are yellow in colour.
LED 1 LED 2 LED 3 LED 4 LED 5
PWM A Red ON ---
Curve 1 (4 m) ---
Curve 2 (5m) -ON -
Curve 3 (6m) -ON ON
Curve 4 (7m) --ON
B) Button lock function
The button lock function serves to prevent improper use
or accidental changes to pump settings.
When the button lock is active, pressing the button has
no effect. This prevents users from accidentally acces-
sing setting mode while allowing them to use setting
display mode.
Press and hold the button for more than 10 seconds, to
activate / deactivate the button lock.
When the button is held down for 10 seconds, all the
LEDs except the red LED ash for one second to indicate
that the button lock function has been activated/deac-
tivated.
C) Setting mode
To access setting mode, press and hold the button (1)
for between 2 and 10 seconds. The button lock must be
deactivated in order to change settings. Available set-
tings are displayed in a pre-dened sequence that is
repeated every time the button is briey pressed and
released. If the button is not pressed for over 10 secon-
ds, the pump exits setting mode and returns to perfor-
mance display mode. The last settings made are saved
in memory. See the table above for the meanings of the
LED sequences.
> 10s.
SETTING MENUPERFORMANCE
> 2 s.
X
10 s.
2 s.
SELECTED SETTING
16
GENERAL

0
1
2
3
4
5
Q [m³/h]
0,0 0,2 0,4 0,6 0,8 1,0 1,2 1,4 1,6 1,8 2,0 2,2 2,4 2,6 2,8 3,0 3,2 3,4
0,0 0,2 0,4 0,6 0,8 1,0 1,2 1,4
Q [m³/h]
6
7
[m]
H
0
10
20
30
40
50
60
[kPa]
p
0,0 0,1 0,2 0,3 0,4 0,5 0,60,7 0,80,9 1,0 Q [l/s]
0
10
20
30
40
50
[W]
P1
RESIDUAL HEAD
FLOW RATE
Curves are referred to a water density of 983.2 Kg/m3, a temperature of +20°C, and a kinematic
viscosity of 0.474 mm2/s (0.474 cSt).
SOLAR CIRCUIT PUMP CURVE
TECHNICAL DATA FOR SOLAR CIRCUIT PUMP
DESCRIPTION ERP ready 2015
Electrical consumption 60 W
EEI Part 3 (*) ≤0,20
P L,Avg (**) ≤27 W
Minimum pressure at pump suction inlet 0,5 bar
(*) Energy efciency index according to ErP 2015 (Commission regulations 641/2009 and 622/2012)
(**) Average annual electricity consumption according to ErP 2015 (Commission regulations 641/2009 and 622/2012)
17
GENERAL

1.11 Wiring diagram
L ali. 230V
X1-01-1
N ali. 230V
X1-01-2
PE
X1-01-3
L aux
X1-02-1
N aux
X1-02-2
L ali. fan
X2-01-1
N ali. fan
X2-01-2
L pi 1
X2-02-1
N pi 1
X2-02-2
L Blocco
X2-03-1
N
X2-03-2
L-Vmix
X2-04-1
Com.
X2-04-2
L-PB
X2-04-3
ER
X2-05-1
Sic
X3-01-1
Sic
X3-01-2
VG 230VRC
X3-02-1
VG 230VRC
X3-02-2
N T-at
X3-03-1
L T-at
X3-03-2
0 M
X3-04-1
GND Fan controlX14-1
+UB Fan controlX14-2
HALL Fan controlX14-3
PWM Fan controlX14-4
+ 26VX11-1
Sic1 X11-2 Sic2 X11-3
PWM PI X11-4
GNDX11-5 VDCX11-6
IN X11-7
AN4 SfumiX11-8
AN3 BW1X11-9
AN2 SR X11-10
AN1 SM X11-11
+5VX11-12
AN5 +5V SE X10-06-2
AN5 -I-SEX10-06-1
AN3 +5V SB X10-05-2
SBA AN3 I SB X10-05-1
Pa
X10-04-2
Pa
X10-04-1
Sic-
X10-03-2
Sic-
X10-03-1
TA1X10-02-2 TA1X10-02-1
TA2-S QAA73X10-01-2
TA2-GND QAA73X10-01-1
AGU2.5 X50-5
AGU2.3 X30-14
OCI420 X40-5
SCH1
88
88
X30-1/14 T1
T2 T3
T4
T5
T6 T7 T8 T9 T10
SCH2
M
+
1TAC 2PE 3
DCV
PVM
4- 5
L1 N PE
VE1
FU1
L1
N
PE
PI
1
2
AT
PE
TAT1 EA
Fan-PWM
L1
N
PE
PB
VG1
Fan-PWM
SE SM SR SBASF
RIV
ER
Lockout lamp
TF
TS
H2
TA1
H1
L1 NPE
Power supply
230 Vac
0
1
IP
PA
Open
Y1
Close
Y2
BSB-4pBSB
NA/0-10V
CH1 pump
Q2
QX1
QX1
St.cyl. pump
Q3
1st stage
L1
PE
PE
T1
T1 N
N
T2
T2
X30-10pX30
L1
L1
S3
S3
N
N
CH1 snsr
BX1BX1
Ground M
Boiler snsr
B2
S sanitari.1B3
Out. temp. snsr
B9
Ground
BX2BX2
LPB-4p LPB
Ground M
X50-5p X50 X60-6p X60
LPBDB
Ground MB
L
L
PE
PE
S3
S3
4
4
SK2
SK2SK1 SK1
N
N
N
N
N
N
N
N
PE
PE
PE
PE
PE
PE
PE
PE
M MM MM MM
CL+CL+ CL+CL+
CL-CL- CL-CL-
G+ G+
SCH3
S.CS
P.CS
88
8
8
SCH4
DB-LPB
MB-LPB
LMU
OCI
L 230V N 230V L P1 N P1 C val C comun. A val
NTC/10K
NTC 10K
SCH5
PI3VM3
S.I3
S.BB
B1 M
S.I2
PI2VM2
H1 M
(*)
TA2
A
B
C
D
E
F
G
H
EA Ignition electrode
ER Flame detection sensor
FU1 Fuse 6.3 AT
H1 Power supply signal
H2 Burner lockout indicator
IP Main switch
OCI Communications interface
PA Water pressure switch
PB Storage cylinder pump
PCS Solar system pump
PI Direct CH zone pump
PI2 Mixed CH zone 1 pump (accessory)
PI3 Mixed CH zone 2 pump (accessory)
SBA Storage cylinder upper temperature sensor
SBB Storage cylinder lower temperature sensor
SCH1 Main board
SCH2 Display and control card
SCH3 RVS card
SCH4 Room unit card
SCH5 Clip-in card (accessories)
SCS Solar collector probe
SE Outdoor temperature sensor (supplied)
SF Flue gas temperature sensor
18
GENERAL

L ali. 230V
X1-01-1
N ali. 230V
X1-01-2
PE
X1-01-3
L aux
X1-02-1
N aux
X1-02-2
L ali. fan
X2-01-1
N ali. fan
X2-01-2
L pi 1
X2-02-1
N pi 1
X2-02-2
L Blocco
X2-03-1
N
X2-03-2
L-Vmix
X2-04-1
Com.
X2-04-2
L-PB
X2-04-3
ER
X2-05-1
Sic
X3-01-1
Sic
X3-01-2
VG 230VRC
X3-02-1
VG 230VRC
X3-02-2
N T-at
X3-03-1
L T-at
X3-03-2
0 M
X3-04-1
GND Fan controlX14-1
+UB Fan controlX14-2
HALL Fan controlX14-3
PWM Fan controlX14-4
+ 26VX11-1
Sic1 X11-2 Sic2 X11-3
PWM PI X11-4
GNDX11-5 VDCX11-6
IN X11-7
AN4 SfumiX11-8
AN3 BW1X11-9
AN2 SR X11-10
AN1 SM X11-11
+5VX11-12
AN5 +5V SE X10-06-2
AN5 -I-SEX10-06-1
AN3 +5V SB X10-05-2
SBA AN3 I SB X10-05-1
Pa
X10-04-2
Pa
X10-04-1
Sic-
X10-03-2
Sic-
X10-03-1
TA1X10-02-2 TA1X10-02-1
TA2-S QAA73X10-01-2
TA2-GND QAA73X10-01-1
AGU2.5 X50-5
AGU2.3 X30-14
OCI420 X40-5
SCH1
88
88
X30-1/14 T1
T2 T3
T4
T5
T6 T7 T8 T9 T10
SCH2
M
+
1TAC 2PE 3
DCV
PVM
4- 5
L1 N PE
VE1
FU1
L1
N
PE
PI
1
2
AT
PE
TAT1 EA
Fan-PWM
L1
N
PE
PB
VG1
Fan-PWM
SE SM SR SBASF
RIV
ER
Lockout lamp
TF
TS
H2
TA1
H1
L1 NPE
Power supply
230 Vac
0
1
IP
PA
Open
Y1
Close
Y2
BSB-4pBSB
NA/0-10V
CH1 pump
Q2
QX1
QX1
St.cyl. pump
Q3
1st stage
L1
PE
PE
T1
T1 N
N
T2
T2
X30-10pX30
L1
L1
S3
S3
N
N
CH1 snsr
BX1BX1
Ground M
Boiler snsr
B2
S sanitari.1B3
Out. temp. snsr
B9
Ground
BX2BX2
LPB-4p LPB
Ground M
X50-5p X50 X60-6p X60
LPBDB
Ground MB
L
L
PE
PE
S3
S3
4
4
SK2
SK2SK1 SK1
N
N
N
N
N
N
N
N
PE
PE
PE
PE
PE
PE
PE
PE
M MM MM MM
CL+CL+ CL+CL+
CL-CL- CL-CL-
G+ G+
SCH3
S.CS
P.CS
88
8
8
SCH4
DB-LPB
MB-LPB
LMU
OCI
L 230V N 230V L P1 N P1 C val C comun. A val
NTC/10K
NTC 10K
SCH5
PI3VM3
S.I3
S.BB
B1 M
S.I2
PI2VM2
H1 M
(*)
TA2
A
B
C
D
E
F
G
H
SM CH ow temperature sensor
SR CH return temperature sensor
TA1 Room thermostat
TA2 Mixed CH zone room thermostat (accessory)
TAT1 Ignition transformer
TF Flue gas thermostat
TS Safety thermostat (100°C +0/-6)
VE1 Variable speed fan
VG1 Gas valve
VM2 Mixer valve (accessory)
VM3 Mixer valve (accessory
(*) To connect during installation.
19
GENERAL

1.12 Control panel
Primary user interface / controls
21
534 8
91011121315 14
76
CONTROL PANEL IN CLOSED POSITION
1 Electrical power indicator (green)
Lights to show that the boiler is receiving
electrical power.
2 Burner lockout indicator (red)
Lights to show that a burner lockout has oc-
curred.
3 DHW production on/off key.
When DHW production is active, the ?? symbol
appears on the display.
4 Main switch.
5 Central heating or room temperature setting
key.
6 Fuse (accessible by tilting the control panel).
7 Display
8 Functioning mode selection key
The selected mode is identied by a line under
the corresponding symbol:
s Automatic: the boiler functions according to
the set program.
oDaytime: the boiler operates at daytime
(comfort) setpoint.
l Night-time: the boiler operates at night-
time (reduced) setpoint.
b Stand-by
9 Information key
10 Value decrement/increment keys
11 Value decrement/increment keys
12 Parameter selection keys
13 Parameter selection keys
14 DHW temperature control key
15 Reset key.
Restores normal functioning after a safety
shutdown.
CONTROL PANEL IN OPEN POSITION
CONTROL OF BOILER, DIRECT CH ZONE AND DHW PRODUCTION
20
GENERAL