Sime Brava One 25 OF ErP Manual

Fonderie SIME S.p.A. 6322856 - 07/2015 - R3
Calderas murales de baja temperatura
Caldeiras de parede de baixa temperaturao
Low temperature wall mounted boiler
Навесные низкотемпературные котлы
MANUAL DE INSTALACIÓN Y MANTENIMIENTO
MANUAL PARA A INSTALAÇÃO E A MANUTENÇÃO
INSTALLATION AND MAINTENANCE MANUAL
ИНСТРУКЦИЯ ПО МОНТАЖУ ИТЕХНИЧЕСКОМУ ОБСЛУЖИВАНИЮ
BRAVA ONE OF ErP
EN
PT
ES
RU

58
EN
RANGE
MODEL CODE
Brava One 25 OF ErP - (G20) 8112182
Brava One 25 OF ErP - (G30/G31) 8112183
COMPLIANCE
Brava One OF ErP boilers comply with:
– Gas Appliances Directive 2009/142/EC
– Boiler Efficiency Directive 92/42/EEC
– Low Voltage Directive 2006/95/EC
– Electromagnetic Compatibility Directive 2004/108/EC
– Thermal efficiency
– "Low temperature" class
– Class NOx 3 (< 150 mg/kWh)
1312
Please refer to the technical data plate for the serial number
and year of manufacture.
EC DECLARATION OF CONFORMITY
In accordance with "Gas Appliances" Directive 2009/142/EC,
"Electromagnetic Compatibility" Directive 2004/108/EC, "Boiler
Efficiency" Directive 92/42/EC and "Low Voltage" Directive
2006/95/EC, the manufacturer Fonderie SIME S.p.A., via Garbo
27, 37045 Legnago (VR),
DECLARES THAT the boiler models
Brava One OF ErP comply with the European Directives.
The Technical Manager
(Franco Macchi)
SYMBOLS
a
DANGER
To indicate actions which, if not carried out correctly,
can result in injury of a general nature or may damage
or cause the appliance to malfunction; these actions
therefore require particular caution and adequate
preparation.
f
DANGER
To indicate actions which, if not carried out correctly,
could lead to injury of an electrical nature; these
actions therefore require particular caution and
adequate preparation.
d
IT IS FORBIDDEN
To indicate actions which MUST NOT BE carried out.
m
CAUTION
To indicate particularly important and useful
information.
TABLE OF CONTENTS
1 DESCRIPTION OF THE APPLIANCE 60
1.1 Characteristics ................................60
1.2 Check and safety devices ........................60
1.3 Identification ..................................60
1.3.1 Technical Data Plate................... 61
1.4 Structure .....................................62
1.5 Technical features ..............................63
1.6 Main water circuit ..............................64
1.7 Sensors.......................................64
1.8 Expansion vessel ...............................64
1.9 Circulation pump ...............................65
1.10 Control panel ..................................65
1.11 Wiring diagram ................................66
2 INSTALLATION 67
2.1 Receiving the product ...........................67
2.2 Dimensions and weight..........................67
2.3 Handling......................................67
2.4 Installation room ...............................67
2.5 New installation or installation of a replacement
appliance .....................................68
2.6 Cleaning the system ............................68
2.7 Water system treatment .........................68
2.8 Boiler installation ..............................68
2.9 Plumbing connections...........................69
2.9.1 Plumbing accessories (optional) ......... 69
2.10 Gas supply ....................................69
2.11 Smoke outlet and combustion air inlet .............69
2.12 Electrical connections...........................70
2.12.1 External sensor....................... 71
2.12.2 Chrono-thermostat or Air Thermostat .... 71
2.12.3 EXAMPLE of use of the command/control
device on some types of heating systems.. 71
2.13 Refilling or emptying............................72
2.13.1 REFILL operations .................... 72
2.13.2 EMPTYING operations ................. 73
3 COMMISSIONING 74
3.1 Preliminary operations ..........................74
3.2 Before commissioning ..........................74
3.3 Parameter setting and display....................74
3.4 List of parameters..............................75
3.5 Fault / malfunction codes........................76
3.6 Display of operating data and counters.............77
3.7 Checks and adjustments ........................77
3.7.1 Chimney sweep function ............... 77
3.7.2 Adjusting gas pressure at the nozzles..... 78
3.8 Gas conversion.................................79
3.8.1 Preliminary operations................. 79
3.9 Automatic calibration procedure ..................80
4 MAINTENANCE 83
4.1 Adjustments...................................83
4.2 External cleaning...............................83
4.2.1 Cleaning the cladding.................. 83
4.3 Cleaning the inside of the appliance ...............83
4.3.1 Cleaning the heat exchanger ............ 83
4.3.2 Cleaning the burner ................... 83
4.3.3 Checking the ignition/detection electrode . 83
4.3.4 Final operations ...................... 84
4.4 Checks .......................................84
4.4.1 Checking the smoke duct............... 84
4.4.2 Checking the expansion vessel pressure . . 84
4.5 Unscheduled maintenance .......................84
4.6 Possible faults and solutions .....................84

59
EN
SAFETY WARNINGS AND REGULATIONS
m
WARNINGS
– After having removed the packaging make sure that
the product supplied is integral and complete in all
its parts. If this is not the case, please contact the
Dealer who sold the appliance.
– The appliance must be used as intended by
Sime
who is not responsible for any damage caused to
persons, animals or things, improper installation,
adjustment, maintenance and improper use of the
appliance.
– In the event of water leaks, disconnect the appliance
from the mains power supply, close the water
mains and promptly inform professionally qualified
personnel.
– Periodically check that the operating pressure of
the water heating system when cold is
1-1.2 bar . If
this is not the case, increase the pressure or contact
professionally qualified personnel.
– If the appliance is not used for a long period of time,
at least one of the following operations must be
carried out:
-
set the main system switch to "OFF";
- close the gas and water valves for the water
heating system.
– In order to ensure optimal appliance operations
Sime recommends that maintenance and checks
are carried out
ONCE A YEAR .
m
WARNINGS
– It is recommended that all operators read this manual
carefully in order to use the appliance in a safe and
rational manner.
–
This manual is an integral part of the appliance. It
must therefore be kept for future reference and
must always accompany the appliance in the event
the appliance is transferred or sold to another
Owner or User or is installed on another system.
–
Installation and maintenance of this appliance
must be carried out by a qualified company or by
a professionally qualified technician in accordance
with the instructions contained in the manual. The
company or technician will, at the end of installation
operations, issue a statement of compliance
with national and local Technical Standards and
Legislation in force
RESTRICTIONS
d
IT IS FORBIDDEN
– The appliance is not to be used by children or
unassisted disabled persons.
– Do not use electrical devices or appliances such as
switches, electrical appliances etc if you can smell
fuel. If this should happen:
-
open the doors and windows to air the room;
- close the gas isolation device;
- promptly call for professional assistance.
– Do not touch the appliance with bare feet or with any
wet part of the body.
– Do not carry out any technical intervention or
cleaning operation before having disconnected the
appliance from the mains power by setting the main
switch to "OFF", and closing the gas supply.
– Do not modify the safety or adjustment devices
without authorization and instructions from the
manufacturer.
– Do not block the condensate drain (if present).
– Do not pull, detach or twist the electrical cables
coming out of the appliance even if the appliance is
disconnected from the mains power supply.
– Do not expose the boiler to atmospheric agents.
These boilers can also be installed in partially
covered areas, as per EN 15502, with a maximum
ambient temperature of 60°C and a minimum
ambient temperature of - 5°C. It is recommended
that the boiler is installed below weathered roofs,
on the balcony or in a protected niche, to protect it
from exposure to weathering agents (rain, hail and
snow). The boiler is equipped as standard with an
antifreeze function.
– Do not block or reduce the size of the ventilation
openings of the room where the appliance is
installed, if present.
– Remove the mains power and gas supply from the
appliance if the external temperature could fall
below ZERO (risk of freezing).
– Do not leave containers with flammable substances
in the room where the appliance is installed.
– Do not leave packaging material around since it
could be dangerous. Therefore dispose of it as
prescribed by legislation in force.

60
EN
1 DESCRIPTION OF THE APPLIANCE
1.1 Characteristics
Brava One OF ErP are last generation low temperature wall
mounted boilers which
Sime has produced for heating and
domestic hot water production. The main design choices made
by
Sime for the Brava One OF ErP boilers are:
– the atmospheric burner combined with a copper heat
exchanger for heating and a rapid heat exchanger for DHW
– the open combustion chamber which classifies the "Type B"
boiler in relation to the room where it is installed
– the command and control microprocessor electronic board
not only allows a better management of the heating system
and the system for domestic hot water production but it can
also be connected to air thermostats or a remote control
(with an Open Therm protocol), an auxiliary sensor for the
connection of any possible solar kits or to an external sensor.
If this is the case, the boiler temperature varies on the basis
of the external temperature according to the selected optimal
climatic curve allowing for significant energy and economic
savings.
Other special features of the
Brava One OF ErP boilers are:
– the anti-freeze function which activates automatically if the
temperature of the water inside the boiler falls below the
threshold of the value set at parameter "tS 1.0" and , if there
is an external sensor, if the external temperature falls below
the threshold of the value set at parameter "tS 1.1".
– the anti-blocking function of the pump and diverter valve. This
activates automatically every 24 hours if no request for heat
has been made
– the chimney sweep function lasts 15 minutes and makes the
job of the qualified technician easier when measuring the
parameters and combustion efficiency and when checking
gas pressure at the nozzles
– screen display of the operating and self-diagnostic
parameters with error code display when the fault occurs.
This makes repair interventions easier and allows appliance
operation to be restored correctly.
1.2 Check and safety devices
The Brava One OF ErP boilers are equipped with the following
check and safety devices:
– thermal safety sensor 100°C
– smoke thermostat
– 3 bar relief valve
– heating water pressure switch
– delivery sensor
– DHW sensor.
d
IT IS FORBIDDEN
to commission the appliance with safety devices which
do not work or which have been tampered with.
a
DANGER
Safety device may only be replaced by professional
qualified personnel using
Sime original spare parts.
1.3 Identification
The Brava One OF ErP boilers can be identified by means of:
1 Packaging label: this is located on the outside of the
packaging and provides a code, the serial number of the
boiler and the bar code
2 Energy Efficiency Label: this is positioned on the outside
of the packaging to notify the User of the level of energy
savings and reduced environmental pollution produced by
the appliance
3 Technical Data Plate: this is located inside the front panel of
the boiler and provides the technical specification, appliance
performance and any other information required by law.
1
3
1
I II
A
B
C
D
E
F
G
2015 811/2013
Cod. 6244745
dB
kW
A++
A+
A
B
C
D
E
F
G
2
3
2
Fig. 1
KEY:
1 Packaging label
2 Energy Efficiency Label
3 Technical Data Plate

61
EN
1.3.1 Technical Data Plate
REFERENCE DIRECTIVE
CODE
APPLIANCE TYPE
MAX OPERATING TEMPERATURE
MIN USEFUL INPUT (50-30°C)
MAX D.H.W. TEMPERATURE
MIN HEAT INPUT
MIN USEFUL OUTPUT (80-60°C)
APPLIANCE CLASSIFICATION
TYPE OF GAS
SUPPLY PRESSURE
MIN HEAT INPUT
NOx CLASS
GAS COUNCIL NUMBER CODE (UK)
WRAS CERTIFICATION (UK)
ELECTRICAL PROTECTION DEGREE
PIN NO.
YEAR OF MANUFACTURE
SERIAL NUMBER
NAME
MAX USEFUL OUTPUT (50-30°C)
MAX OPERATING PRESSURE
MAX USEFUL OUTPUT (80-60°C)
MAX HEAT INPUT
WATER CONTENT IN BOILER
FLOW RATE
MAX OPERATING PRESSURE
ELECTRICAL SUPPLY
MAXIMUM ABSORBED POWER
MAX HEAT INPUT
COUNTRY OF INTENDED INSTALLTION
APPLIANCE CATEGORY
D.H.W. CONTENT
Fig. 2
m
CAUTION
Tampering with, removing or failing to display the identification plate or carrying out any other operation which does not
allow safe identification of the product or which may hinder installation and maintenance operations.

62
EN
1.4 Structure
20
21
17
18
19
2
1
3
4
7
8
6
9
10 11
12 14
15
16
13
5
1 Smoke thermostat
2 Smoke chamber
3 Dual sensor (thermal safety/delivery)
4 Combustion chamber
5 Ignition/detection electrode
6 Diverter valve
7 System filling unit
8 Domestic hot water sensor
9 Control panel
10 Secondary heat exchanger
11 Gas valve
12 Domestic water filter and flow regulator
13 System relief valve
14 Boiler drain
15 System pump
16 Water pressure switch
17 Automatic bleed valve
18 Burner
19 Primary heat exchanger
20 Expansion vessel
21 Smoke outlet
Fig. 3

63
EN
1.5 Technical features
DESCRIPTION Brava One 25 OF ErP
CERTIFICATIONS
Country of intended installation IT – ES – PT – GR – SI
Fuel G20 - G30/G31
PIN number 1312CP5940
Category II2H3+
Appliance classification B11BS
Class NO
x 3 (< 150 mg/kWh)
HEATING PERFORMANCE
HEAT INPUT (*)
Nominal flow (Q
n max) kW 25
Minimum flow (Q
n min) kW 10
HEAT OUTPUT
Nominal (80-60°C) (P
n max) kW 23,0
Minimum (80-60°C) kW 8,7
EFFICIENCY
Max useful efficiency (80-60°C) %92,2
Min useful efficiency (80-60°C) %87,0
Useful efficiency at 30% of load (50-30°C) %91,5
Thermal efficiency (EEC 92/42)
Losses after shutdown at 50°C W168
DOMESTIC HOT WATER PERFORMANCE
Nominal heat input [Q
nw max] kW 25,0
Minimum heat input [Q
nw min] kW 10,0
Specific D.H.W. flow rate ∆t 30°C (EN 13203) l/min 10,9
Continuous D.H.W. flow rate (∆t 25°C / ∆t 35°C) l/min 13,3 / 9,5
Minimum D.H.W. flow rate l/min 2,2
Max [PMW] / Min pressure bar 7 / 0,4
kpa 700 / 40
ENERGY PERFORMANCE
HEATING
Heating seasonal energy efficiency class C
Heating seasonal energy efficiency %79
Sound power db(A) 48
DOMESTIC HOT WATER
Domestic hot water energy efficiency class B
Domestic hot water energy efficiency %73
Stated domestic hot water profile load XL
ELECTRICAL SPECIFICATIONS
Power supply voltage V230
Frequency Hz 50
Absorbed electrical power [Q
n max] W79
Absorbed electrical power at [Q
n min] W50
Absorbed electrical power in stand-by W2,8
Electrical power absorbed by the pump W41
Electrical protection degree IP X4D
COMBUSTION DATA
Smoke temperature at Max/Min flow (80-60°C) °C 107,7 / 81,0
Maximum smoke flow Min/Max g/s 18 / 16
CO
2 at Max / Min flow rate (G20) %5,3 / 2,3
CO
2 at Max / Min flow rate (G31) %5,8 / 2,6
NOx measured mg/kWh 148
NOZZLES -GAS
Number of nozzles No. 13
Nozzle diameter (G20) mm 1,30
Nozzle diameter (G30/G31) mm 0,72
Gas consumption at Max/Min flow rate (G20) m
3
/h 2,65 / 1,05
Gas consumption at Max/Min flow rate (G30) Kg/h 1,97 / 0,79
Gas consumption at Max/Min flow rate (G31) Kg/h 1,94 / 0,78
Gas supply pressure (G20/G30/G31) mbar 20 / 28-30 / 37
kpa 2 / 2,8-3 / 3,7

64
EN
TEMPERATURE -PRESSURE
Max operating temperature [T max] °C 85
Heating adjustment range °C 20 ÷ 80
Domestic hot water adjustment range °C 10 - 60
Max operating pressure [PMS] bar 3
kpa 300
Water content in boiler l3,15
(*) Heat input calculated using the lower heat output (Hi)
Lower Heat Output (Hi)
G20 Hi. 9.45 kW/m
3
(15°C, 1013 mbar) - G30 Hi. 12.68 kW/kg (15°C, 1013 mbar) - G31 Hi. 12.87 kW/kg (15°C, 1013 mbar)
1.6 Main water circuit
1
19
4
5
3
6
8
16
109
15 18
17
12
11 14 S
13
7
MUG E R
2
Fig. 4
KEY:
M System delivery
R System return
U Domestic hot water outlet
E Domesti hot water inlet
S Safety valve outlet
G Gas supply
1 Smoke thermostat
2 Heat exchanger (mono-
thermal)
3 Dual sensor (thermal
safety/delivery)
4 Combustion chamber
5 Gas valve
6 Domestic hot water heat
exchanger
7 Domestic hot water
sensor
8 Diverter valve
9 Automatic bleed valve
10 Pump
11 Domestic hot water flow
meter
12 Domestic hot water filter
13 System filling
14 System relief valve
15 Water pressure switch
16 Boiler drain
17 System expansion vessel
18 Water pressure gauge
19 Smoke chamber
1.7 Sensors
The sensors installed have the following characteristics:
– Dual sensor (thermal safety/output) NTC R25°C; 10kΩβ25°-
85°C: 3435
– domestic hot water sensor NTC R25°C; 10kΩβ25°-85°C: 3435
– external sensor NTC R25°C; 10kΩβ25°-85°C: 3435
Correspondence of Temperature Detected/Resistance
Examples of reading:
TR=75°C →R=1925Ω
TR=80°C →R=1669Ω.
TR
0°C 1°C 2°C 3°C 4°C 5°C 6°C 7°C 8°C 9°C
Resistance R (Ω)
0°C 27279
17959
12090
8313
5828
4161
3021
2229
1669
1266
973
26135
17245
11634
8016
5630
4026
2928
2164
1622
1232
25044
16563
11199
7731
5440
3897
2839
2101
1577
1199
24004
15912
10781
7458
5258
3773
2753
2040
1534
1168
23014
15289
10382
7196
5082
3653
2669
1982
1491
1137
22069
14694
9999
6944
4913
3538
2589
1925
1451
1108
21168
14126
9633
6702
4751
3426
2512
1870
1411
1079
20309
13582
9281
6470
4595
3319
2437
1817
1373
1051
19489
13062
8945
6247
4444
3216
2365
1766
1336
1024
18706
12565
8622
6033
4300
3116
2296
1717
1300
998
10°C
20°C
30°C
40°C
50°C
60°C
70°C
80°C
90°C
100°C
1.8 Expansion vessel
The expansion vessel installed on the boilers has the following
characteristics:
Description U/M
Brava One OF ErP
25
Total capacity l8,0
Prefilling pressure kPa 100
bar 1,0
Useful capacity l4,0
Maximum system content (*) l109
(*) Conditions of:
Average maximum temperature of the system 85°C
Start temperature at system filling 10°C.
m
CAUTION
– For systems with water content exceeding the
maximum system content (as indicated in the
table) an additional expansion vessel must be
prearranged.
– The difference in height between the relief valve
and the highest point of the system cannot exceed
6 metres. If the difference is greater than 6 metres,
increase the prefilling pressure of the expansion
vessel and the system when cold by 0.1 bar for each
meter increase.

65
EN
1.9 Circulation pump
The flow-head performance curve available for the heating
system is shown in the graph below.
RESIDUAL HEAD (mbar)
0
0 800 1000 1200 1400600400200
100
200
300
400
500
600
25 OF
FLOW (l/h)
Fig. 6
1.10 Control panel
1 1
2 2
2 2
2
3
Fig. 7
1 KNOBS
tThe heating knob allows the user to set the heating
temperature to between 20 and 80°C during normal
operation.
rThe domestic hot water knob allows the user to set the
domestic hot water temperature to between 10 and 60°C
during normal operation.
2 FUNCTIONAL BUTTONS
sIf pressed once or more than once for at least 1 second
during normal operation, this button allows the user to
change the boiler operating mode in a cyclical sequence
(Stand-by – Summer – Winter).
<This allows the user to scroll through the parameters or
decrease the values.
>This allows the user to scroll through the parameters or
increase the values.
oThis allows the user to confirm the selected parameter
or to modify the value or to "unblock" the appliance
when the alarm for a "block" malfunction is present.
cProgramming connector cover plug.
NB: pressing any one of these buttons for more than 30 seconds
generates a fault on the display without preventing boiler
operation. The warning disappears when normal conditions are
restored.
3 DISPLAY
l
“SUMMER” . This symbol appears when the boiler is
operating in Summer mode or if only the domestic hot
water mode is enabled via the remote control. If the
symbols land nare flashing, this indicates that the
chimney sweep function is active.
n
“WINTER” . This symbol appears when the boiler is
operating in Winter mode or if both the domestic hot
water and heating modes are enabled via the remote
control. With the remote control, if no operating modes
have been enabled both symbols land nwill be off.
R
“RESET REQUIRED” . This message only appears if there
is a malfunction which must be or may be restored
manually.
r
“DOMESTIC HOT WATER” . This symbol is present during
a request for DHW or when the chimney sweep function
is operating; it flashes during the domestic hot water set
point selection.
t
“HEATING” . This symbol is present during heating
operation or when the chimney sweep function is
operating; it flashes during the heating set point
selection.
f
“BLOCK” DUE TO NO FLAME .
F
“FLAME PRESENCE” .
K
“ALARM” . This indicates that a fault has occurred. The
number specifies the cause which generated the alarm
(see paragraph "Fault / malfunction codes".

66
EN
1.11 Wiring diagram
BLUE BLUE
RED
RED
RED RED
RED
GREEN
WHITE
RED RED
BLUE
CD .6324910
BROWN
BLUE
230 V - 50 HZ
L
N
BROWN
SS
SM1 SM2
TRA
EAR
EV
F
PI
PA FLM
BLACK BLACK
CN6
CN5
CN3
CN17
CN4 CN1
CN15
CN14
CN13CN12
CN11
VCC GND IN
CN2
TF
BLACK BLACK
BLUE BLUE
3456
SE
TA
CR
BLACK
BLUE
BROWN
VD
23
L Line
N Neutral
F Fuse (3.15AT)
TRA Ignition transformer
PI System pump
TF Smoke thermostat
EAR Ignition / Detection electrode
EV Gas solenoid valve
SS Domestic hot water sensor
SM1-2 Dual sensor (thermal safety/delivery)
FLM Flow meter
VD Diverter valve
PA Water pressure switch
TA Air thermostat
SE External sensor
CR Remote control (instead of air
thermostat)
To connect the "Air Thermostat" or, alternatively the "Remote Control", remove the bridge
between terminals 5-6. Fig. 8
m
CAUTION
Users must:
– Use an omnipolar cut-off switch, disconnect switch
in compliance with EN Standards
– Respect the connections L (Live) - N (Neutral)
– Ensure that the special power cable is only replaced
with a cable ordered as a spare part and connected
by professionally qualified personnel
– Connect the earth wire to an effective earthing
system. The manufacturer is not responsible for any
damage caused by failure to earth the appliance or
failure to observe the information provided in the
wiring diagrams.
d
IT IS FORBIDDEN
To use water pipes for earthing the appliance.

67
EN
2 INSTALLATION
2.1 Receiving the product
Brava One OF ErP appliances are delivered in a single unit
protected by cardboard packaging.
Fig. 9
The plastic bag found inside the packaging contains the
following:
– Installation, use and maintenance manual
– Paper template for boiler installation
– Certificate of warranty
– Hydrostatic test certificate
– System booklet
– Bag with expansion plugs
d
IT IS FORBIDDEN
Do not leave packaging material around or near
children since it could be dangerous. Dispose of it as
prescribed by legislation in force.
2.2 Dimensions and weight
H
LP
Ø 130 mm
Fig. 10
Description
Brava One OF ErP
25
W (mm) 450
D (mm) 250
H (mm) 700
Weight (kg) 26
2.3 Handling
Once the packaging has been removed, the appliance is to
be handled manually, tilting it slightly, lifting it and applying
pressure in the points indicated in the figure.
Fig. 11
d
IT IS FORBIDDEN
DO NOT hold onto the appliance cladding but use the
"solid" parts such as the base and the rear structure.
a
DANGER
Use suitable tools and accident protection when
removing the packaging and when handling the
appliance.
2.4 Installation room
The room where the appliance is to be installed must comply
with the Technical Regulations and Legislation in force. It must
be equipped with sufficiently sized ventilation openings.
The minimum temperature of the installation room must NOT
be lower than
-5 °C .
m
CAUTION
Remember to consider the space needed in order to
access the safety/adjustment devices and to carry out
maintenance interventions (see Fig. 12).

68
EN
APPROXIMATE MINIMUM DISTANCES
≥50 mm
≥300 mm
≥900 mm
Fig. 12
2.5 New installation or installation of a
replacement appliance
When Brava One OF ErP boilers are installed on old systems or
systems requiring updating, it is recommended the installer
checks that:
– the connecting flue pipe is suitable for the combustion
temperature of the appliance, calculated and manufactured in
compliance with Standards, that it is as straight as possible,
air tight, isolated, with no obstructions or restriction and
that it has appropriate condensate collection and evacuation
systems
– the electrical system has been manufactured in compliance
with specific Standards and by professionally qualified
personnel
– the fuel delivery line and the tank (LPG) comply fully with
specific Standards
– the expansion vessel ensures total absorption of the fluid
dilation in the system
– the pump flow-head performance is sufficient for the system
characteristics
– the system is clean, free of any sludge, deposits, de aerated
and air tight. For system cleaning, please refer to the relevant
paragraph.
m
CAUTION
The manufacturer declines all liability for any damage
caused by an incorrect implementation of the smoke
outlet.
2.6 Cleaning the system
Before installing the appliance on a newly constructed system or
replacing a heat generator on an existing system, it is important
that the system is thoroughly cleaned to remove sludge, slag,
dirt, residue etc.
Before removing an old heat generator from an existing system,
it is recommended that the user:
– puts a descaling additive into the water system
– allows the system to work with the generator active for a few
days
– drains the dirty water from the system and flushes the system
with clean water once or more than once.
If the old generator has already been removed or is not available,
replace it with a pump to circulate water in the system and then
proceed as described above.
Once cleaning operations have been carried out and before
installing the new appliance, it is recommended that a fluid
is added to the water system to protect it from corrosion and
deposits.
m
CAUTION
For further information on the type of additive and
usage, please contact the appliance manufacturer.
2.7 Water system treatment
When filling and restoring the system it is good practice to use
water with:
– aspect: clear if possible
– pH: 6÷8
– hardness: < 25°f.
If the water characteristics are different from those indicated, it
is recommended that a safety filter is used on the water delivery
pipe to retain impurities, and a chemical treatment system to
protect against possible deposits and corrosion which could
affect boiler operation.
If the systems are only low temperature systems, it is
recommended that a product is used to prevent the development
of bacteria.
In any case, please refer to and comply with Legislation and
specific Technical Standards in force.
2.8 Boiler installation
Brava One OF ErP boilers leave the factory with a paper template
for installation onto a solid wall.
For installation:
– position the paper template (1) on the wall (2) where the boiler
is to be mounted
– make the holes and insert the expansion plugs (3)
– hook the boiler onto the plugs.
1
2
3
Fig. 13

69
EN
m
CAUTION
– The height of the boiler is to besuch thatdisassembly
and maintenance interventions are facilitated.
2.9 Plumbing connections
The plumbing connections have the following characteristics
and dimensions.
9565 65 65 65 ==
L
MU G E R
Fig. 14
Description
Brava One OF ErP
25
M - System delivery Ø 3/4" G
R - System return Ø 3/4" G
U - Domestic hot water output Ø 1/2" G
E - Domestic hot water inlet Ø 1/2" G
G - Gas supply Ø 3/4" G
W (mm) 450
2.9.1 Plumbing accessories (optional)
To facilitate plumbing and gas connections to the systems, the
accessories as shown in the table below are available and are to
be ordered separately from the boiler.
DESCRIPTION CODE
Installation plate 8075441
Curve kit 8075418
Curve and valve kit with connections from DIN
to SIME 8075443
Cocks kit 8091806
Valve kit with connections from DIN to SIME 8075442
Wall mount replacement kit for other makers 8093900
Fitting protection Kit 8094531
Polyphosphate dosing kit 8101700
Dosing recharge kit 8101710
NB: kit instructions are supplied with the accessory itself or are
to be found on the packaging.
2.10 Gas supply
Brava One OF ErP boilers leave the factory specifically
prearranged for G20 gas or G30/G31. The G20 models can be
converted to function with G30/G31 using the "specific nozzle
kit" (optional) provided by
Sime on request separately from the
boiler.
If changing the type of gas to be used, carry out the entire
“GAS
CONVERSION”
phase of the appliance.
Boiler connection to the gas mains must be carried out in full
compliance with installation Standards in force.
Before connecting the boiler to the gas mains, the user must
ensure that:
– the type of gas is correct for the appliance
– the pipes are clean
– the gas supply pipe is the same dimension as or greater than
that of the boiler fitting (G3/4") and with a load loss less than
or equal to that contemplated between the gas mains and the
boiler.
a
DANGER
Once installation has been completed, check that
the joints are air tight as indicated in the installation
Standards.
m
CAUTION
It is recommended that the gas line has a suitable
filter.
2.11 Smoke outlet and combustion air inlet
Brava One OF ErP boilers take in combustion air from the room
where the boiler is installed through the ventilation openings
which must fully comply with Technical Standards.
Permitted outlets
B11BS B11BS
Fig. 15
B11BS
Combustion air inlet into the atmosphere and smoke outlet to
open air.
NB: opening for combustion air (6 cm2 x kW).
On the basis of REGULATION (UE) N. 813/2013 OF THE
COMMISSION of 2nd August 2013:
"This natural draught boiler is intended to be connected only to
a flue shared between multiple dwellings in existing buildings
that evacuates the residues of combustion to the outside of the
room containing the boiler. It draws the combustion air directly
from the room and incorporates a draught diverter. Due to
lower efficiency, any other use of this boiler shall be avoided
and would result in higher energy consumption and higher
operating costs."

70
EN
m
WARNINGS
– The smoke flue and the connection to the flue pipe
must be in compliance with the national and local
Standards and Legislation in force.
– The use of rigid ducts which are resistant to
temperature, condensate, mechanical stress and
are air-tight is compulsory.
– Outlet ducts which are not isolated are a risk of
danger.
2.12 Electrical connections
The boiler is equipped with a ready wired power cable which is
to be connected to a 230V~50 Hz network.
If this cable needs to be replaced, an original spare must be
requested from
Sime .
Therefore only the connections of the original components
as shown in the table are needed. These are to be ordered
separately from the boiler.
DESCRIPTION CODE
External sensor kit (ß=3435, NTC 10KOhm at 25°C) 8094101
Power cable (dedicated) 6323875
Remote control HOME (open therm) 8092280
Remote control HOME PLUS (open therm) 8092281
m
CAUTION
The maintenance interventions described must ONLY
be carried out the professionally qualified personnel.
a
DANGER
Before carrying out any interventions described:
– set the main system switch to "OFF"
– close the gas valve
– make sure that no hot parts inside the appliance are
touched.
OFF
Fig. 16
To facilitate introduction of the connection wires of the optional
components into the boiler:
– remove the two screws (1), pull the front panel (2) forwards
and release it from the top by lifting it
1
2
Fig. 17
– remove the screws (3) securing the control panel (4)
– move the panel (4) upwards (a) but keeping it in the side
guides (5) to the end of travel
– bring it forwards and down (b) until it is horizontal
3a
b
5
4
Fig. 18
– insert the connection wires into the cable gland (6) and the
opening (7) on the control panel
6
7
Fig. 19
– bring the control panel (4) to the original position and secure
it with the screws (3) which were removed previously
– connect the component wires to the terminal board (8)
following the indications provided on the data plate (9).
3
4
8
9
SE
CR-TA
6
5
4
3
Fig. 20

71
EN
m
CAUTION
It is compulsory:
– to use an omnipolar cut-off switch, disconnect
switch in compliance with EN Standards
– if the power cable is to be replaced, that ONLY
a special cable is used with a factory produced
re-wired connector, ordered as a spare part and
connected by a professionally qualified person
– to connect the earth wire to an effective earthing
system (*)
– that before any intervention on the boiler, the mains
power is disconnected by setting the main system
switch to "OFF".
(*) The manufacturer is not responsible for any damage
caused by failure to earth the appliance or failure to
observe the information provided in the wiring diagrams.
d
IT IS FORBIDDEN
To use water pipes for earthing the appliance.
2.12.1 External sensor
The boiler is prearranged for connection to an external air
temperature sensor and can operate with a sliding temperature.
This means that the delivery temperature sent to the boiler can
vary on the basis of the external temperature depending on the
climatic curve selected from those shown in the diagram (Fig.
21).
When fitting the sensor on the outside of the building, follow
the instructions provided on the packaging of the product itself.
Climatic curve
Delivery temperature
20 15 10 5 0 -10 -15-5 -20
80
90
70
60
50
40
30
20
°C
°C
K=9 K=6 K=4,5 K=3
K=2,2
K=1,5
K=0,75
External temperature
Fig. 21
m
CAUTION
If there is an external sensor, turn the heating knob
tuntil the required curve K has been selected within
the range
K=0.0 - K=9.0 in order to select the optimal
climatic curve for the system and therefore the delivery
temperature based on the external temperature.
2.12.2 Chrono-thermostat or Air Thermostat
The electrical connection of the chrono-thermostat or air
thermostat has already been described. When fitting the
component in the room where the readings are to be taken,
follow the instructions provided on the packaging of the product
itself.
2.12.3 EXAMPLE of use of the command/control
device on some types of heating systems
KEY
M System delivery
CR Remote control
EXP Expansion card
SE External sensor
TA÷TA3 Air thermostat for the zone
VZ1-VZ3 Zone valves
RL1-RL3 Zone relays
P1-P3 Zone pump
SP Hydraulic separator
ONEDIRECTZONEsystem,external sensorand airthermostat.
R
M
SE
TA
CR
Fig. 22
MULTI ZONE system - with zone valve, air thermostat and
external sensor.
TA
TA1
VZ1 VZ2 VZ3
TA2 TA3
SE
R
M
Fig. 23
m
CAUTION
Set the parameter "tS 1.7 = DELAY SYSTEM PUMP
ACTIVATION to allow the opening of zone valve VZ.

72
EN
MULTI ZONE system - with pump, air thermostat and external
sensor.
TA
SE
TA2 TA3
TA1
P3
RL1
SP
RL2 RL3
P2P1
R
M
Fig. 24
2.13 Refilling or emptying
Before carrying out the operation described below, make sure
that the main system switch is set to "OFF".
OFF
Fig. 25
2.13.1 REFILL operations
Remove the front panel:
– remove the two screws (1), pull the front panel (2) forwards
and release it from the top by lifting it.
1
2
Fig. 26
Domestic hot water circuit:
– open the isolation valves of the domestic hot water circuit (if
present)
– open one or more than one hot water valve to fill and bleed the
domestic hot water circuit
– once bleeding has been completed, close the hot water valves.
Heating circuit:
– open the isolation and air bleeding valves in the highest points
of the system
– loosen the automatic bleed valve (3)
– open the isolation valves of the heating circuit (if present)
– open the filling valve (4) and fill the heating system until a
pressure of
1-1.2 bar is shown on the display
– close the filling valve (4)
– check that there is no air in the system by bleeding all the
radiators and the circuit on the high points of the system
4 5
3
Fig. 27
NB: to completely remove all air from the system, it is
recommended that this operation is repeated a number of times.
– check the pressure on the pressure gauge (5) and if necessary
top up until the correct pressure reading appears
– close the automatic bleed valve (3).
Refit the front panel of the boiler hooking it on at the top,
pushing it forwards and securing it with the screw (1) which was
removed previously.

73
EN
2.13.2 EMPTYING operations
Domestic hot water circuit:
– close the domestic hot water circuit isolation valve
(prearranged in installation)
– open one or more than one hot water valve to fill and bleed the
domestic hot water circuit.
Boiler:
– loosen the automatic bleed valve (3)
– close the heating circuit isolation valves (prearranged in
installation)
– check that the filling valve (4) is closed
– connect a rubber hose to the boiler drain valve (7) and open it
– when it has fully emptied, close the drain valve (7)
– close the automatic bleed valve (3).
4
3 7
Fig. 28

74
EN
3 COMMISSIONING
3.1 Preliminary operations
Before commissioning the appliance, check that:
– the type of gas is correct for the appliance
– the gas isolation valves for the heating system and the water
system are open
– the system pressure as shown on the pressure gauge when
the system is cold , is between
1 and 1.2 bar
– the pump impeller rotates freely.
3.2 Before commissioning
After having carried out the preliminary operations, perform the
following to start the boiler:
– set the main system switch to "ON"
ON
Fig. 29
– the type of gas for which the boiler has been calibrated, “nG”
(methane) or
“LG” (LPG,) will appear followed by the power.
After this the correct representation of the symbols will be
checked and finally
“- -” will appear on the display
– press the button sonce for at least 1 second to select
"SUMMER mode" l. The value of the delivery sensor
detected at that moment will appear on the display
– open one or more than one hot water tap. The boiler will work
at maximum power until the taps are closed.
– if there is a fault, the message “AL” will appear on the display
followed by the fault code (eg.
“06” - no flame detected).
m
CAUTION
If the boiler has blocked, restore the start conditions
by pressing and holding the button o(R) for more
than 3 seconds. This operation can be carried out no
more than 6 times.
– close the taps opened previously and check that the appliance
shuts down
– press the button sonce to select "WINTER mode" n. The
value of the heating water temperature detected at that
moment will appear on the display
– adjust the air thermostat and check that the boiler starts and
operates correctly
– to check that the pressure in the network and the nozzles are
correct, the procedure described in section must be carried
out "Chimney sweep function".
3.3 Parameter setting and display
To go into the parameter menu:
– from the selected mode (eg. WINTER)
– press the buttons <and o(approximately 5 seconds) at the
same time until
“tS” (installer) appears on the 2 digits of the
display which alternate with
“0.1” (parameter number) and a
“2” (set value)

75
EN
– press the button >to scroll up the list of parameters and then
<to scroll down the list
NB: holding the buttons
>
or
<
increases the speed of the
scrolling movement.
– once the required parameter has been reached, press the
button ofor approximately 3 seconds to confirm and access
the set value which will then flash and can then be modified
– to modify the value in the permitted range, press the buttons
>to increase it or <to decrease it
– once the required value has been reached, press the button
oto confirm.
When all the parameter modifications have been made, exit the
parameter menu by pressing and holding down the buttons <
and o
at the same time for approximately 5 seconds until the
initial screen is displayed.
3.4 List of parameters
Type No. Description Range U/M Step Default
CONFIGURATION
tS 0.1 Index showing boiler power in kW
0 = 24 ---0
tS 0.2
Hydraulic configuration
0 = rapid
1 = storage tank with thermostat or heating only
2 = hot water tank with sensor
3 = two programmer
4=instant with solar power input
0 .. 4 -10
tS 0.3 Gas Type Configuration
0 = G20; 1 = G31 0 .. 1 -10 or 1
tS 0.4
Combustion configuration
0 = sealed chamber with combustion control
1 = open chamber with smoke thermostat
2 = low NOx
0 .. 2 -11
tS 0.8 External sensor value correction -5 .. +5 °C 10
DOMESTIC HOT WATER - HEATING
tS 1.0 Boiler Antifreeze Threshold 0 .. +10 °C 13
tS 1.1 External Sensor Antifreeze Threshold
-- = Disabled -9 .. +5 °C 1-2
tS 1.2 Heating Curve Incline 0 .. 80 -120
tS 1.3 Minimum Heating Temperature Adjustment 20 .. Par tS 1.4 °C 120
tS 1.4 Maximum Heating Temperature Adjustment Par tS 1.3 .. 80 °C 180
tS 1.5 Maximum power heating 0 .. 100 %1100
tS 1.6 Heating Post-Circulation Time 0 .. 99 seconds
x 10 13
tS 1.7 Heating Pump Activation Delay 0 .. 60 seconds
x 10 10
tS 1.8 Re-ignition Delay 0 .. 60 Min 13
tS 1.9 Domestic Hot Water Modulation with Flow meter 0 = Disabled
1 = Enabled 0 .. 1 -11
tS 2.0 Maximum power domestic hot water 0 .. 100 %1100
tS 2.1 Minimum power heating/domestic hot water (premixed) 0 .. 100 %1 0
tS 2.2 Domestic hot water preheating enabling
0 = OFF; 1 = ON 0 .. 1 -10
tS 2.5 Internal parameter (no change) ---0
tS 2.6 Zone Valve / Pump Relaunch Delay 0 .. 99 Min 11
tS 2.9 Anti-legionella Function (Only hot water tank)
-- = Disabled 50 .. 80 -1--

76
EN
Type No. Description Range U/M Step Default
tS 3.0 Maximum domestic hot water temperature 35 .. 67 °C 160
tS 3.5
Digital / analogue Pressure switch
0 = water pressure switch
1 = water pressure transducer
2 = water pressure transducer (only pressure displayed)
0 .. 2 -10
tS 4.0 Modulating Pump Speed -- = No modulation AU = Automatic 30
.. 100 %10 AU
tS 4.1 ∆T Modulating pump delivery/Return 10 .. 40 %120
tS 4.7 System pump forcing (only in winter mode) 0 = Disabled
1 = Enabled 0 .. 1 -10
RESET
tS 4.8 INST Parameter set to default 0 .. 1 --0
In the event of a fault/malfunction the message “AL” will appear
on the display alternating with the alarm number eg.
“AL 04”
(Domestic Hot Water Sensor Fault).
Before repairing the fault:
– disconnect the appliance from the mains power by setting the
main switch to "OFF"
OFF
Fig. 30
– as a precautionary measure, close the gas isolation valve.
Repair the fault and start-up the boiler again.
NB: after having repaired the fault, when the alarm number
appears on the display together with the message RESET (see
figure), press the button
o
(
R
) for approximately 3 seconds
to start the appliance up again.
3.5 Fault / malfunction codes
Type No. Description
AL 01 Smoke thermostat
AL 02 Low water pressure in system
AL 04 Domestic hot water sensor fault
AL 05 Delivery sensor fault
AL 06 No flame detection
AL 07 Sensor or safety thermostat intervenes
AL 08 Fault in the flame detection circuit
AL 09 No water circulating in the system
AL 11 Gas valve modulator disconnected
AL 12 Incorrect configuration of the open /sealed chamber
AL 17 Fault regarding maximum deviation between the 2
NTC heating sensors
AL 28 Maximum number of consecutive releases
AL 37 Fault due to low network voltage
AL 40 Incorrect network frequency detected
AL 41 Flame loss more than 6 consecutive times
AL 42 Button fault
AL 43 Open Therm communication fault
AL 44 Anomaly inside electronic board
AL 62 The self-calibrating procedure must be carried out
AL 72 Incorrect positioning of the delivery sensor
AL 74 Fault in the 2nd element of the delivery sensor
AL 80 Anomaly in gas valve control line
AL 81 Block due combustion during start-up
AL 83 Irregular combustion (temporary error)
AL 88 Anomaly inside electronic board
AL 96 Block due to clogging in smoke outlet