Sime Brava Slim HE 25 Manual

Fonderie SIME S.p.A. 6322780 - 03/2014 - R0
Calderas murales de condensación
Caldeiras de parede de condensação
Condensing wall mounted boiler
Навесные конденсационные котлы
MANUAL DE INSTALACIÓN Y MANTENIMIENTO
MANUAL PARA A INSTALAÇÃO E A MANUTENÇÃO
INSTALLATION AND MAINTENANCE MANUAL
ИНСТРУКЦИЯ ПО МОНТАЖУ ИТЕХНИЧЕСКОМУ ОБСЛУЖИВАНИЮ
BRAVA SLIM HE
EN
PT
ES
RU

54
EN
RANGE
MODEL CODE
Brava Slim HE 25 - (G20) 8112250
Brava Slim HE 30 - (G20) 8112252
Brava Slim HE 35 - (G20) 8112254
Brava Slim HE 40 - (G20) 8112256
COMPLIANCE
Brava Slim HE 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
– Classified as "Condensing"
– Class NOx 5 (< 70 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, "Boil-
er 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
Slim HE
comply with the European Directives.
The Technical Manager
(Franco Macchi)
SYMBOLS

DANGER
To indicate actions which, if not carried out correctly,
can result in injury of a general nature or may dam-
age or cause the appliance to malfunction; these ac-
tions therefore require particular caution and adequate
preparation.

DANGER
To indicate actions which, if not carried out correctly,
could lead to injury of an electrical nature; these ac-
tions therefore require particular caution and adequate
preparation.

IT IS FORBIDDEN
To indicate actions which MUST NOT BE carried out.

CAUTION
To indicate particularly important and useful informa-
tion.
TABLE OF CONTENTS
1 DESCRIPTION OF THE APPLIANCE 56
1.1 Characteristics ................................56
1.2 Check and safety devices ........................56
1.3 Identification ..................................56
1.4 Structure .....................................57
1.5 Technical features ..............................58
1.6 Main water circuit ..............................59
1.7 Sensors.......................................59
1.8 Expansion vessel ...............................59
1.9 Circulation pump ...............................59
1.10 Control panel ..................................60
1.11 Wiring diagram ................................61
2INSTALLATION 62
2.1 Receiving the product ...........................62
2.2 Dimensions and weight..........................62
2.3 Handling......................................62
2.4 Installation room ...............................62
2.5 New installation or installation of a replacement
appliance .....................................63
2.6 Cleaning the system ............................63
2.7 Water system treatment .........................63
2.8 Boiler installation ..............................63
2.9 Plumbing connections...........................64
2.9.1 Plumbing accessories (optional) ......... 64
2.10 Condensate outlet/collection .....................64
2.11 Gas supply ....................................64
2.12 Smoke outlet and combustion air inlet .............65
2.12.1 Coaxial duct.......................... 66
2.12.2 Separate ducts (split pipe system Ø 80mm) 66
2.13 Electrical connections...........................67
2.13.1 External sensor....................... 69
2.13.2 Chrono-thermostat or Air Thermostat .... 69
2.13.3 EXAMPLE of use of the command/control
device on some types of heating systems.. 69
2.14 Refilling or emptying............................70
2.14.1 REFILL operations .................... 70
2.14.2 EMPTYING operations ................. 70
3 COMMISSIONING 71
3.1 Preliminary operations ..........................71
3.2 Before commissioning ..........................71
3.2.1 Self-calibrating procedure .............. 71
3.3 Parameter setting and display....................72
3.4 List of parameters..............................72
3.5 Fault / malfunction codes........................73
3.6 Display of operating data and counters.............74
3.7 Checks .......................................75
3.7.1 Chimney sweep function ............... 75
3.8 Gas conversion.................................76
4 MAINTENANCE 77
4.1 Adjustments...................................77
4.2 External cleaning...............................77
4.2.1 Cleaning the cladding.................. 77
4.3 Cleaning the inside of the appliance ...............77
4.3.1 Removing components................. 77
4.3.2 Cleaning the burner and the combustion
chamber ............................ 78
4.3.3 Final operations ...................... 78
4.4 Checks .......................................78
4.4.1 Checking the smoke duct............... 78
4.4.2 Checking the expansion vessel pressure . . 78
4.5 Unscheduled maintenance .......................78
4.6 Possible faults and solutions .....................79

55
EN
SAFETY WARNINGS AND REGULATIONS

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 person-
nel.
–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 pro-
fessionally qualified personnel.
–If the appliance is not used for a long period of time,
at least one of the following operations must be car-
ried 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 car-
ried out
ONCE A YEAR .

WARNINGS
– It is recommended that all operators read this manu-
al 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 ap-
pliance 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 profes-
sionally qualified technician in accordance with the
instructions contained in the manual. The company
or technician will, at the end of installation opera-
tions, issue a statement of compliance with nation-
al and local Technical Standards and Legislation in
force
RESTRICTIONS

IT IS FORBIDDEN
– The appliance is not to be used by children or unas-
sisted 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 clean-
ing operation before having disconnected the ap-
pliance from the mains power by setting the main
switch to "OFF", and closing the gas supply.
– Do not modify the safety or adjustment devices with-
out authorization and instructions from the manufac-
turer.
–Do not block the condensate drain (if present).
– Do not pull, detach or twist the electrical cables com-
ing out of the appliance even if the appliance is dis-
connected from the mains power supply.
–Do not expose the boiler to atmospheric agents. This
boiler has not been designed to work on the outside
of a building.
– Do not block or reduce the size of the ventilation
openings of the room where the appliance is in-
stalled, if present.
–Remove the mains power and gas supply from the
appliance if the external temperature could fall be-
low 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.

56
EN
1 DESCRIPTION OF THE APPLIANCE
1.1 Characteristics
Brava Slim HE are last generation condensing wall mounted boil-
ers which
Sime has produced for heating and domestic hot water
production. The main design choices made by
Sime for the Brava
Slim HE
boilers are:
– the total pre-mix microflame burner combined with a steel
heat exchanger for heating and a rapid heat exchanger for DHW
– the sealed combustion chamber which can be classified "Type
C" or "Type B" in relation to the room where the boiler is in-
stalled, depending on the smoke outlet configuration adopted
during installation
– 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 a remote control with an Open Thermo protocol
or to air thermostats or to an external sensor. If connected to
an external sensor, the boiler temperature varies on the basis
of the external temperature according to a selected optimal cli-
matic curve providing significant energy and economic savings.
Other special features of the
Brava Slim HE 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 "PAR 10" and , if there
is an external sensor, if the external temperature falls below
the threshold of the value set at parameter "PAR 11".
– 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 pa-
rameters and combustion efficiency
–screen display of the operating and self-diagnostic parameters
with error code display when the fault occurs. This makes re-
pair interventions easier and allows appliance operation to be
restored correctly.
1.2 Check and safety devices
The Brava Slim HE boilers are equipped with the following check
and safety devices:
– thermal safety thermostat 100°C
– 3 bar relief valve
– heating water pressure transducer
– delivery sensor
– DHW sensor
– smoke probe.

IT IS FORBIDDEN
to commission the appliance with safety devices which
do not work or which have been tampered with.

DANGER
Safety device may only be replaced by professional
qualified personnel using
Sime original spare parts.
1.3 Identification
The Brava Slim HE boilers can be identified by means of:
1 Packaging label: this is located on the outside of the packag-
ing and provides a code, the serial number of the boiler and
the bar code
2 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
2
1
2
Fig. 1
KEY:
1 Packaging label
2 Technical Data Plate

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 op-
erations.

57
EN
1.4 Structure
22
23
24
25
26
27
14 15 16
17 19
22
21
20
18
1
2
3
4
5
6
7
10
11
12
13
8
9
2829
1 Heat exchanger bleed point
2 Heat exchanger
3 Combustion chamber door
4 Oversleeve
5 Flame viewing window
6 Ignition/detection electrode
7 Heat safety thermostat
8 Delivery sensor
9 Ventilator
10 Condensate siphon
11 Diverter valve
12 System filling unit
13 Domestic hot water sensor
14 Control panel
15 Domestic hot water heat exchanger
16 Gas valve
17 Domestic hot water filter
18 System relief valve
19 Boiler drain
20 System pump
21 Water pressure transducer
22 Automatic bleed valve
23 Air-gas mixer
24 Expansion vessel
25 Air inlet pipe
26 Air-smoke chamber
27 Smoke probe
28 Air inlet
29 Smoke outlet
Fig. 2

58
EN
1.5 Technical features
DESCRIPTION
Brava Slim HE
25 30 35 40
CERTIFICATIONS
Country of intended installation IT – ES – PT – GR – SI
Fuel G20 / G31
PIN number 1312CO5936
Category II2H3P
Type B23P - B53P - C13 - C33 - C43 - C53 - C63 - C83
Class NO
x 5 (< 70 mg/kWh)
HEATING PERFORMANCE
HEAT INPUT
Nominal kW 20 24 30 35
Minimum kW 4,0 4,8 6 7
HEAT OUTPUT
Nominal (80-60°C) kW 19,7 23,6 29,5 34,5
Nominal (50-30°C) kW 21,4 25,7 32,2 37,5
Minimum G20 (80-60°C) kW 3,9 4,7 5,9 6,9
Minimum G20 (50-30°C) kW 4,3 5,1 6,5 7,5
Minimum G31 (80-60°C) kW 3,9 4,7 5,9 6,9
Minimum G31 (50-30°C) kW 4,3 5,1 6,5 7,5
EFFICIENCY
Max useful efficiency (80-60°C) % 98,5 98,3 98,3 98,6
Min useful efficiency (80-60°C) % 97,5 97,9 98,3 98,6
Max useful efficiency (50-30°C) % 107 107,1 107,3 107,1
Min useful efficiency (50-30°C) % 107,5 106,25 108,3 107,1
Useful efficiency at 30% of load (40-30°C) % 107,0 107,0 107,0 107,0
Thermal efficiency (EEC 92/42)
Losses after shutdown at 50°C W 84 88 88 92
DOMESTIC HOT WATER PERFORMANCE
Nominal heat input kW 24 28 35 40
Minimum heat input kW 4 4,8 6 7
D.H.W. flow rate ∆t 30°C l/min 11,2 12,9 16,5 19,4
Continuous D.H.W. flow rate (∆t 25°C / ∆t 35°C) l/min 13,6 / 9,7 16,1 / 11,5 20 / 14,3 22,9 / 16,4
Minimum D.H.W. flow rate l/min 2,2 2,2 2,2 2,2
Max / Min Pressure bar 7 / 0,5 7 / 0,5 7 / 0,5 7 / 0,7
kpa 700 / 50 700 / 50 700 / 50 700 / 70
ELECTRICAL SPECIFICATIONS
Power supply voltage V 230
Frequency Hz 50
Absorbed electrical power W 105 114 135 135
Electrical protection degree IP X5D
COMBUSTION DATA
Smoke temperature at Max/Min flow (80-60°C) °C 82 / 66 89 / 71 77 / 67 75 / 62
Smoke temperature at Max/Min flow (50-30°C) °C 59 / 45 71 / 51 58 / 49 54 / 39
Maximum smoke flow Min/Max g/s 11,2 / 1,9 13,1 / 2,2 16,3 / 2,8 18,6 / 3,3
CO
2 at Max/Min flow rate (G20) % 9,0 / 9,0 9,0 / 9,0 9,0 / 9,0 9,0 / 9,0
CO
2 at Max/Min flow rate (G31) % 10,0 /10,0 10,0 /10,0 10,0 / 10,0 10,0 / 10,0
NOZZLES -GAS
Number of nozzles No. 1 1 1 1
Nozzle diameter (G20-G31) mm 5,3 5,3 5,3 5,3
Gas consumption at Max/Min flow rate (G20) m3/h 2,53 / 0,42 2,96 / 0,50 3,70 / 0,63 4,23 / 0,74
Gas consumption at Max/Min flow rate (G31) Kg/h 1,86 / 0,31 2,17 / 0,37 2,71 / 0,46 3,10 / 0,74
Gas supply pressure (G20/G31) mbar 20 / 37 20 / 37 20 / 37 20 / 37
kpa 2 / 3,7 2 / 3,7 2 / 3,7 2 / 3,7
TEMPERATURE -PRESSURE
Max operating temperature °C 85
Heating adjustment range °C 20÷80
Domestic hot water adjustment range °C 10÷60
Max operating pressure bar 3
kpa 300
Water content in boiler l 4,65 4,75 4,95 5,60
Lower Heat Output (Hi)
G20 Hi. 9.45 kW/m
3
(15°C, 1013 mbar) - G31 Hi. 12.87 kW/kg (15°C, 1013 mbar)

59
EN
1.6 Main water circuit
3
4
5
13
12
14 15
17
18
9
8
7
10
16
20 19
11
6
MU GERSc S
2
1
Fig. 3
KEY:
M System delivery
R System return
U Domestic hot water outlet
E Domesti hot water inlet
S Safety valve outlet
G Gas supply
Sc Condensate outlet
1 Condensing heat exchanger
2 Combustion chamber
3 Ventilator
4 Thermal safety thermostat
5 Delivery sensor
6 Domestic hot water heat exchanger
7 Pressure transducer
8 Automatic bleed valve
9 Pump
10 System expansion vessel
11 Diverter valve
12 Automatic by-pass
13 Domestic hot water sensor
14 Gas valve
15 Domestic hot water flow meter
16 Domestic hot water filter
17 Boiler drain
18 System relief valve
19 System filling
20 Condensate siphon outlet
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
Resistenza 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 Slim HE
25 30 35 40
Total capacity l 9,0 10,0
Prefilling pressure kPa 100
bar 1,0
Useful capacity l 5,0 6,0
Maximum system
content (*) l 124 140
(*) Conditions of:
Average maximum temperature of the system 85°C
Start temperature at system filling 10°C.

CAUTION
– For systems with water content exceeding the max-
imum 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 me-
tres. If the difference is greater than 6 metres, in-
crease the prefilling pressure of the expansion vessel
and the system when cold by 0.1 bar for each meter
increase.
1.9 Circulation pump
The flow-head performance curve available for the heating sys-
tem is shown in the graph below.
RESIDUAL HEAD (mbar)
0
0 800 1000 1200600400200
100
200
300
400
500
600
HE 25-30
HE 35
HE 40
FLOW (l/h)
Fig. 4

CAUTION
The appliance is equipped with a by-pass which en-
sures water circulation in the boiler when the thermo-
static valves or cocks are used in the system.

60
EN
1.10 Control panel
21
Fig. 5
1 FUNCTIONAL BUTTONS
yIf 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).If the boiler is experienc-
ing a fault which can be reset, it allows boiler operation to
be unblocked.
rDuring normal operation, pressing the button displays
the domestic hot water set point which can be between
10 and 60°C. In "parameter setting", the user can scroll
through the parameter index (decreasing) by pressing
this button.
tDuring normal operation, pressing the button displays the
heating set point which can be between 20 and 80°C. In
"parameter setting", the user can scroll through the pa-
rameter index (increasing) by pressing this button.
<During normal operation, pressing this button allows the
user to reduce the heating or DHW set point on the basis
of the selection made previously. If there is a Remote Con-
trol (Open Therm), after having selected the heating but-
ton, the user can modify the incline of the climatic curve
(decreasing it) by pressing the button (
- ). In "parameter
setting/display", the user can modify the parameter set-
ting or value (decreasing) by pressing this button.
>During normal operation, pressing this button allows the
user to increase the heating or DHW set point on the ba-
sis of the selection made previously. If there is a Remote
Control (Open Therm), after having selected the heating
button, the user can modify the incline of the climatic
curve (increasing it) by pressing the button (
+ ). In "param-
eter setting/display", the user can modify the parameter
setting or value (increasing) by pressing this button.
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 oper-
ation.The warning disappears when normal conditions are re-
stored.
2 DISPLAY
l
“SUMMER” . This symbol appears when the boiler is oper-
ating 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 oper-
ating 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.
d
“RESET REQUIRED” . The message indicates that after
having repaired the fault, normal boiler operation can be
restored by pressing the button y.
r
“DOMESTIC HOT WATER” . This symbol is present during a
DHW request or during the "chimney sweep function" It
flashes during the selection of the domestic hot water set
point.
t
“HEATING” . This symbol lights up during heating opera-
tion or during the "chimney sweep function It flashes dur-
ing the selection of the heating set point.
f
“BLOCK” DUE TO NO FLAME .
F
“FLAME PRESENCE” .
v
“POWER LEVEL” . This indicates the power level at which
the boiler is operating.
p
“PARAMETER” . This indicates that the user may be in pa-
rameter setting/display, or "info" or "counter", or in "acti-
vated alarms" (history).
A
“ALARM” . This indicates that a fault has occurred. The
number specifies the cause which generated the alarm.
z
“CHIMNEY SWEEP” . This indicates that the "chimney
sweep function" has been activated.
e
“EXTERNAL SENSOR” . This indicates that the external
sensor has been installed and that the boiler is working
on a sliding temperature.

61
EN
1.11 Wiring diagram
BLACK
BLUE
BROWN
TRA
EV
F
CN11
BLUE BLUE
GREEN GREEN
BLACK BLACK
TA
SE
CR
BLACK
BLACK
PI
VD
23
BLUE
BROWN
230 V - 50 Hz
L
N
CD. 6324920
CN6
CN5
CN3
CN17
CN4 CN1
CN15
CN14
CN13CN12
CN2
RED
GREEN
WHITE
RED RED
RED
RED
SS
V
FLM
SF
TS
TFU
SM
VCC GND IN
BLACK
BLACK
BLUE
RED GREEN BLACK BLUE
BLUE
4321
BLUE
BLACK
GREEN
RED
BLUE
BROWN
EAR
SAUX
BLACK BLACK
TA2
321 4 5 6
RED
ORANGE
GREEN
TPA
5V GND OUT
L Line
N Neutral
F Fuse (3.15AT)
TRA Ignition transformer
PI System pump
V Ventilator
EAR Ignition / Detection electrode
EV Gas solenoid valve
SS Domestic hot water sensor
SM Delivery sensor
SAUX Auxiliary sensor
TS Safety thermostat
TFU Thermal fuse
SF Smoke probe
FLM Flow meter
VD Diverter valve
TPA Pressure transducer
TA-TA2 Air thermostat
SE External sensor
CR Remote control (instead of air thermostat)

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 sys-
tem.The manufacturer is not responsible for any
damage caused by failure to earth the appliance or
failure to observe the information provided in the wir-
ing diagrams.

IT IS FORBIDDEN
To use water pipes for earthing the appliance.
To connect the "Air Thermostat" or, alternatively the "Remote Control", remove the bridge
between terminals 5-6. Fig. 6

62
EN
2 INSTALLATION
2.1 Receiving the product
Brava Slim HE appliances are delivered in a single unit protected
by cardboard packaging.
Fig. 7
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

IT IS FORBIDDEN
Do not leave packaging material around or near chil-
dren since it could be dangerous. Dispose of it as pre-
scribed by legislation in force.
2.2 Dimensions and weight
H
LP
Fig. 8
Description
Brava Slim HE
25 30 35 40
W (mm) 400
D (mm) 250 250 250 300
H (mm) 700
Weight (kg) 28,5 28,5 30,0 32,5
2.3 Handling
Once the packaging has been removed, the appliance is to be
handled manually, tilting it slightly, lifting it and applying pres-
sure in the points indicated in the figure.
Fig. 9

IT IS FORBIDDEN
DO NOT hold onto the appliance cladding but use the
"solid" parts such as the base and the rear structure.

DANGER
Use suitable tools and accident protection when remov-
ing 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 suitably sized ventilation openings when the in-
stallation is a "TYPE B" installation.
The minimum temperature of the installation room must NOT be
lower than
-5 °C .

CAUTION
Remember to consider the space needed in order to
access the safety/adjustment devices and to carry out
maintenance interventions(see the figure below).

63
EN
APPROXIMATE MINIMUM DISTANCES
≥50 mm
≥300 mm
≥900 mm
Fig. 10
2.5 New installation or installation of a
replacement appliance
When Brava Slim HE boilers are installed on old systems or sys-
tems requiring updating, it is recommended the installer checks
that:
–the connecting flue pipe is suitable for the combustion tem-
perature 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 person-
nel
– the fuel delivery line and the tank (LPG) comply fully with spe-
cific Standards
–the expansion vessel ensures total absorption of the fluid dila-
tion 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.

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 in-
stalling the new appliance, it is recommended that a fluid is add-
ed to the water system to protect it from corrosion and deposits.

CAUTION
For further information on the type of additive and us-
age, 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 deliv-
ery 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 recom-
mended that a product is used to prevent the development of
bacteria.
In any case, please refer to and comply with Legislation and spe-
cific Technical Standards in force.
2.8 Boiler installation
Brava Slim HE 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. 11

64
EN

CAUTION
– The height of the boiler is to be such that disassem-
bly and maintenance interventions are facilitated.
2.9 Plumbing connections
The plumbing connections have the following characteristics and
dimensions.
175
48
65 65 65 65 ==
48
400
M
Sc
Sc
UGER
Fig. 12
Description
Brava Slim HE
25 30 35 40
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
Sc - Condensate outlet Ø 20 mm
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
Cocks kit 8091806
Wall mount replacement kit for other makers 8093900
Fitting protection Kit 8094530
Polyphosphate dosing kit 8101700
Dosing recharge kit 8101710
Solar kit for instant combination boilers 8105101
NB: kit instructions are supplied with the accessory itself or are
to be found on the packaging.
2.10 Condensate outlet/collection
In order to collect the condensate, it is recommended that:
– the appliance condensate outlets and the smoke outlet are
ducted
– a neutralising device is prearranged
– the outlet incline is
>3% .

CAUTION
– The condensate outlet duct must be airtight, suitably
sized to that of the siphon and must not be restricted
at any point.
– The condensate outlet must be constructed in full
compliance of the National or Local regulations in
force.
– Before commissioning the appliance, fill the siphon
with water.
2.11 Gas supply
Brava Slim HE boilers leave the factory prearranged for gas G20
(methane) and can also work with G31 (propane) without the need
for any type of mechanical conversion. Simply select parame-
ter ”03” (see “Parameter setting and display") and set the type
of gas to be used.
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 en-
sure 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.

DANGER
Once installation has been completed, check that the
joints are air tight as indicated in the installation Stand-
ards.

CAUTION
It is recommended that the gas line has a suitable filter.

65
EN
2.12 Smoke outlet and combustion air inlet
Brava Slim HE boilers must be equipped with appropriate smoke flue ducts and combustion air inlet ducts. These ducts are considered
an integral part of the boiler and are provided by
Sime as an accessory kit, to be ordered separately from the appliance on the basis of the
type permitted and the system requirements.
Permitted outlets
max 0,5 m
max 0,5 m
B23P
B53P
C33
C53 C43
C83
C43
C13
C13
C33
B23P-B53P
Combustion air inlet into the atmosphere and smoke
outlet to open air.
NB: opening for combustion air (6 cm2 x kW).
C13
Concentric wall smoke outlet The pipes can start from
the boiler but the outlets must be concentric or close
together (no more than 50 cm) to be subject to similar
wind conditions.
C33
Concentric roof smoke outlet The pipes can start from
the boiler but the outlets must be concentric or close
together (no more than 50 cm) to be subject to similar
wind conditions.
C43
Outlet and inlet in shared or separate flue pipes but sub-
jected to similar wind conditions.
C63
Same type as C42 but with outlet and inlet made from
pipes which are sold and certified separately.
C53
Separate wall or roof inlet and outlet in different pres-
sure areas.
NB: the inlet and outlet must never be positioned on op-
posing walls.
C83
Outlet in single or shared flue or with inlet on wall.
P: smoke outlet system designed to operate with posi-
tive pressure.
Fig. 13

WARNINGS
– The smoke flue and the connection to the flue pipe must be in compliance with the national and local Standards and Legis-
lation 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.

66
EN
2.12.1 Coaxial duct
Coaxial accessories
Description
Code
Ø 60/100
mm Ø 80/125 mm
Coaxial duct kit 8096250 8096253
Extension W. 1000 mm 8096150 8096171
Extension W. 500 mm 8096151 8096170
Vertical extension W. 140 mm with
smoke analysis take-off point 8086950 -
Adapter for Ø 80/125 mm - 8093150
Additional 90° curve 8095850 8095870
Additional 45° curve 8095950 8095970
Tile with joint 8091300 8091300
Roof outlet terminal W. 1284 mm 8091205 8091205
Load loss - Equivalent lengths
Model
Leq (linear metres)
Ø 60/100
mm Ø 80/125 mm
90° curve 1,5 2
45° curve 1 1
Minimum-Maximum Lengths
Model
Duct Length Ø 60/100 Duct Length Ø 80/125
W Horizon-
tal (m) H Vertical
(m) W Horizon- tal (m) H Vertical (m)
Min. Max. Min. Max. Min. Max. Min. Max.
Brava Slim
HE 25
- 6 1,3 8 - 12 1,2 15
Brava Slim
HE 30
- 5 1,3 7 - 10 1,2 13
Brava Slim
HE 35
- 4 1,3 6 - 10 1,2 13
Brava Slim
HE 40
- 4 1,3 6 - 10 1,2 13
2.12.2 Separate ducts (split pipe system Ø 80mm)
Constructing outlets for separate ducts indicates the use of the
"air-smoke split pipe system". This is to be ordered separate-
ly from the boiler and when connected to the other accessories,
from those listed in the table below, completes the smoke-outlet/
combustion air inlet assembly.
Separate accessories
Description
Code
Diameter Ø
60 (mm) Diameter Ø 80 (mm)
Air-smoke split pipe system (without
take-off point) 8093060 -
Air-smoke split pipe system (with take-
off point) - 8093050
90° curve M-F (6 pieces) 8089921 8077450
90° curve M-F (with take-off point) 8089924 -
M-F 80/60 reduction 8089923 -
Extension W. 1000 mm (6 pieces) 8089920 8077351
Extension W. 500 mm (6 pieces) - 8077350
Extension W. 135 mm (with take-off
point) - 8077304
Wall outlet terminal 8089541 8089501
Internal and external ring nut kit 8091510 8091500
Inlet terminal 8089540 8089500
45° curve M-F (6 pieces) 8089922 8077451
Description
Code
Diameter Ø
60 (mm) Diameter Ø 80 (mm)
Manifold 8091400
Tile with joint 8091300
Roof outlet terminal W. 1390 mm 8091204
Inlet/outlet fitting Ø 80/125 mm - 8091210
Split pipe system
1
2
3
4
Fig. 14
KEY:
1 Split pipe system with take-off point
2 Air inlet
3 Smoke outlet
4 Take-off point for smoke analysis

CAUTION
– The maximum total length of the ducts , obtained by
adding the lengths of the inlet and outlet pipes, is de-
termined by the load losses of the individual accesso-
ries used and
must not exceed 15 mm H2O .
–
The total extension must not in any case exceed 50 m
even if the total load loss is less than the maximum
which can be applied.
Load loss accessory Ø 60 mm
Description Code
Load loss (mm H2O)
Brava Slim HE 25 Brava Slim HE 30
Inlet Outlet Inlet Outlet
Air/smoke split
pipe system
8093060 2,5 0,5 2,5 0,5
90° curve MF
8089921 0,4 0,9 0,5 1,1
45° curve MF
8089922 0,35 0,7 0,45 0,9
Horizontal exten-
sion W. 1000 mm
8089920 0,4 0,9 0,5 1,1
Vertical extension
W. 1000 mm
8089920 0,4 0,6 0,5 0,7
Wall outlet ter-
minal
8089541 _ 1,2 _ 1,4
Wall inlet terminal
8089540 0,5 _ 0,8 _
Roof outlet termi-
nal (*)
8091204 0,8 0,1 1,1 0,15
(*) The losses of the roof outlet terminal at inlet include the man-
ifold code 8091400.

67
EN
Load loss accessory Ø 60 mm
Description Code
Load loss (mm H2O)
Brava Slim HE 35 Brava Slim HE 40
Inlet Outlet Inlet Outlet
Air/smoke split
pipe system
8093060 2,5 0,5 2,5 0,5
90° curve MF
8089921 0,6 1,4 0,6 1,4
45° curve MF
8089922 0,55 1,2 0,55 1,2
Horizontal exten-
sion W. 1000 mm
8089920 0,6 1,4 0,6 1,4
Vertical extension
W. 1000 mm
8089920 0,6 0,8 0,6 0,8
Wall outlet ter-
minal
8089541 _ 1,6 _ 1,6
Wall inlet terminal
8089540 1,1 _ 1,1 _
Roof outlet termi-
nal (*)
8091204 1,5 0,2 1,5 0,2
(*) The losses of the roof outlet terminal at inlet include the man-
ifold code 8091400.
NB: for the boiler to operate correctly it is necessary that a min-
imum distance of 0.50 m of the duct is respected with a 90° inlet
curve.
Load loss accessory Ø 80 mm
Description Code
Load loss (mm H2O)
Brava Slim HE 25 Brava Slim HE 30
Inlet Outlet Inlet Outlet
90° curve MF
8077450 0,20 0,25 0,25 0,30
45° curve MF
8077451 0,15 0,15 0,20 0,20
Horizontal exten-
sion W. 1000 mm
8077351 0,15 0,15 0,20 0,20
Vertical extension
W. 1000 mm
8077351 0,15 0,15 0,20 0,20
Wall terminal
8089501 0,10 0,25 0,10 0,35
Roof outlet termi-
nal (*)
8091204 0,80 0,10 1,10 0,15
Load loss accessory Ø 80 mm
Description Code
Load loss (mm H2O)
Brava Slim HE 35 Brava Slim HE 40
Inlet Outlet Inlet Outlet
90° curve MF
8077450 0,30 0,4 0,30 0,4
45° curve MF
8077451 0,25 0,25 0,25 0,25
Horizontal exten-
sion W. 1000 mm
8077351 0,25 0,25 0,25 0,25
Vertical extension
W. 1000 mm
8077351 0,25 0,25 0,25 0,25
Wall terminal
8089501 0,15 0,50 0,15 0,50
Roof outlet termi-
nal (*)
8091204 1,5 0,2 1,5 0,2
(*) The losses of the roof outlet terminal at inlet include the man-
ifold code 8091400.
NB: for the boiler to operate correctly it is necessary that a min-
imum distance of 0.50 m of the duct is respected with a 90° inlet
curve.
Example: calculation of the load loss of a Brava Slim HE 25 boiler.
Accessories Ø 80
mm Code Quan- tity
Load loss (mm H2O)
Inlet Outlet Total
Extension W. 1000
mm (horizontal)
8077351 7 7 x 0,15 - 1,05
Extension W. 1000
mm (horizontal)
8077351 7 - 7 x 0,15 1,05
90° curve
8077450 2 2 x 0,20 - 0,40
90° curve
8077450 2 - 2 x 0,25 0,50
Wall terminal
8089501 2 0,10 0,25 0,35
TOTAL 3,35
(installation permitted since the total of the load loss of the ac-
cessories used is less than 15 mm H
2 O).
120
Ø 80
185
185
Ø 80
250
400
169
169
Fig. 15
2.13 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 re-
quested from Sime .
Therefore only the connections of the original components as
shown in the table are needed. These are to be ordered separate-
ly from the boiler.
DESCRIPTION CODE
External sensor kit (ß=3435, NTC 10KOhm at 25°C) 8094101
Power cable (dedicated) 6323875
Remote control CR 63 (open therm) 8092219
Remote control CR 73 (open therm) 8092226
Remote control CR 83 (open therm) 8092241
Remote control HOME (open therm) 8092280
Remote control HOME PLUS (open therm) 8092281

CAUTION
The maintenance interventions described must ONLY
be carried out the professionally qualified personnel.

68
EN

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
3
a
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) follow-
ing the indications provided on the data plate (9).
3
4
8
9
3
Fig. 20

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 spe-
cial 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 sys-
tem (*)
–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 in-
formation provided in the wiring diagrams.

69
EN

IT IS FORBIDDEN
To use water pipes for earthing the appliance.
2.13.1 External sensor
The boiler is prearranged for connection to an external air tem-
perature 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 diaphragm (de-
fault curve no. 20).
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 10 0 -10 -20
-30
90
80
70
60
50
40
30
°C
°C
40 35 30 27,5 25 22,5
20
17,5
15
12,5
10
7,5
5
2,5
100
External temperature
Fig. 21

CAUTION
The curves are calculated with a room temperature
of 20°C. To modify the curve, set "PAR. 12 = HEATING
CURVE INCLINE".
2.13.2 Chrono-thermostat or Air Thermostat
The electrical connection of the chrono-thermostat or air ther-
mostat has already been described. When fitting the component
in the room where the readings are to be taken, follow the in-
structions provided on the packaging of the product itself.
2.13.3 EXAMPLE of use of the command/control device
on some types of heating systems
KEY
M System delivery
R System return
CR Remote control
SE External sensor
TA÷TA3 Air thermostat for the zone
VZ1-VZ3 Zone valves
RL1-RL3 Zone relays
P1-P3 Zone pump
SI Hydraulic separator
ONE DIRECT ZONE system , external sensor and air thermostat
or, alternatively, remote control.
R
M
SE
TA
CR
Fig. 22
MULTI ZONE system -with pump, air thermostat and external
sensor.
TA
SE
TA2 TA3
TA1
P3
RL1
SI
RL2 RL3
P2P1
R
M
Fig. 23
MULTI ZONE system -with zone valve, air thermostat and exter-
nal sensor.
TA
TA1
VZ1 VZ2 VZ3
TA2 TA3
SE
R
M
Fig. 24

CAUTION
Set the parameter "tS 17 = DELAY SYSTEM PUMP ACTI-
VATION to allow the opening of zone valve Vz.

70
EN
2.14 Refilling or emptying
Before carrying out the operation described below, make sure
that the main system switch is set to "OFF".
OFF
Fig. 25
2.14.1 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.
2
1
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 pres-
sure of
1-1.2 bar is shown on the pressure gauge (5)
– close the filling valve (4)
– check that there is no air in the system by bleeding all the radi-
ators and the circuit on the high points of the system
– remove the front plug (6) of the pump and use a screwdriver to
check that the impeller is not blocked
– replace the plug (6)
4 5
6 3
Fig. 27
NB: to completely remove all air from the system, it is recom-
mended 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)
– fill the siphon disconnecting it from the pipe or using (by means
of) the smoke take-off point.
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.
2.14.2 EMPTYING operations
Domestic hot water circuit:
– close the domestic hot water circuit isolation valve (prear-
ranged 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 instal-
lation)
–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
37
Fig. 28

71
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 once 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
3.2.1 Self-calibrating procedure
Carry out the "Automatic self-calibrating procedure" as follows:
– press and hold down the buttons <and >at the same time for
approximately 12 seconds until the flashing symbols land
nappear on the display
– as soon as the symbols begin to flash, release the buttons <
and >and press the button y,
within 3 seconds
– the "Automatic self-calibrating procedure" starts
– open one or more than one hot water tap
– the values flash on the display:
“99” (maximum value), followed
by an "intermediate value" and finally
“00” (minimum value)
The operator must wait for approximately 15 minutes for the
"self-calibrating procedure" to end and the message "SUMMER
mode" lto reappear on the display Once the procedure has ter-
minated:
–close the taps opened previously and check that the appliance
shuts down.
if there is a fault, the message
“ALL” will appear on the display,
the fault code (eg.
“06” - no flame detected) and the message
d.

CAUTION
To restore the start conditions press and hold the but-
tonyfor more than 3 seconds. This operation can
be performed up to a maximum of 6 times without the
"self-calibrating procedure" being interrupted.
– press the button yonce to select "WINTER mode" n. the
value of the heating water temperature detected at that mo-
ment will appear on the display
– adjust the air thermostat and check that the boiler starts and
operates correctly
– carry out the procedure"Chimney sweep function", to check
the mains gas pressure, detect the combustion parameters
and to measure the combustion efficiency required by legis-
lation in force..

72
EN
3.3 Parameter setting and display
To go into the parameter menu:
– from the selected mode (eg. WINTER)
– press the buttons rand t(for approximately 5 seconds) at
the same time until
“PAR 01” (parameter number) and the val-
ue set (0-4) appears on the display
– press the button tto scroll up the list of parameters and then
rto scroll down the list
NB: holding the buttons
r
or
t
increases the speed of the
scrolling movement.
– once the required parameter has been reached, press the but-
tons>or <to modify the value within the permitted range. The
modifications are stored automatically.
When all the parameter modifications have been made, exit the
parameter menu by pressing and holding down the buttons r
and t
at the same time until the initial screen is displayed.
3.4 List of parameters
Type No. Description Range Unit of measure-
ment Step Default
CONFIGURATION
PAR 01 Index showing boiler power in kW
1 = 25; 2 = 30; 3 = 35; 4 = 40 0 .. 3 - 1 1-2-3-4
PAR 02
Hydraulic configuration
0 = rapid
1 = hot water tank with thermostat
2 = hot water tank with sensor
3 = two programmer
0 .. 3 - 1 0
PAR 03 Gas Type Configuration
0 = G20; 1 = G31 0 .. 1 - 1 0
PAR 04 Combustion configuration 0 = sealed chamber with combustion control
1 = open chamber with smoke probe 0 .. 1 - 1 0
PAR 07 Ignition power 0 .. 40 - 1 0
PAR 08 External sensor value correction -5 .. +5 °C 1 0