Sime BRAVA SLIM HE R Series User guide

Fonderie SIME S.p.A. 6322891C - 06/2022 - R6
Cod.
INSTALLATION AND SERVICING INSTRUCTIONS
BRAVA SLIM HE R
Gas Safety Certified AS/NZS 5263.1.2
LN: SAI-400196
CAUTION
This product must be installed exclusively by professionally
qualified personnel in accordance with the requirements of
the standards AS/NZS 5601, AS/NZS 3500, AS/NZS 3000 (cur-
rent version) of the local gas, electricity authorities and other
relevant legislation.
Condensing wall mounted boiler
EN
TRANSLATION OF THE ORIGINAL INSTRUCTIONS
To consult the documentation,
visit our website www.sime.it

2
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 intend-
ed by
Sime who is not responsible for
any damage caused to persons, ani-
mals or things, improper installation,
adjustment, maintenance and improp-
er use of the appliance.
–In the event of water leaks, disconnect
the appliance from the mains pow-
er supply, close the water mains and
promptly inform professionally quali-
fied personnel.
–Periodically check that the operating
pressure of the water heating system
when cold is
1-1.2 bar (100-120 kPa) . If
this is not the case, increase the pres-
sure or contact professionally qualified
personnel.
–If the appliance is not used for a long
period of time, at least one of the fol-
lowing 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 TWICE 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 profession-
ally qualified technician in accordance
with the instructions contained in the
manual. Once the work is complete,
the company or technician will issue a
declaration of conformity with national
and local technical standards and leg-
islation in force in the country where
the appliance will be used.
–
Any repairs on the appliance must be
carried out solely by professional-
ly qualified personnel, using original
spare parts only. Failure to comply with
these instructions can jeopardise the
appliance’s safety and void the warran-
ty with immediate effect.
–This appliance is not suitable for pool
or SPA heating
–
Fonderie SIME S.p.A. reserves the right
to make improvements to its prod-
ucts at any time without prior notice,
without compromising their essential
characteristics. The graphic illustra-
tions and/or images in this document
may show optional accessories that
vary according to the country in which
the appliance is used.

3
RESTRICTIONS
d
IT IS FORBIDDEN
–To allow appliance to be used by chil-
dren or unassisted disabled persons.
–To 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 assis-
tance.
–To touch the appliance with bare feet or
with any wet part of the body.
–To carry out any technical interven-
tion or cleaning operation before hav-
ing disconnected the appliance from
the mains power by setting the main
switch to "OFF", and closing the gas
supply.
–To modify the safety or adjustment
devices without authorization and in-
structions from the manufacturer.
–To block the condensate drain (if pres-
ent).
–To pull, detach or twist the electrical
cables coming out of the appliance
even if the appliance is disconnected
from the mains power supply.
–To expose the boiler to atmospheric
agents. These boilers can also be in-
stalled in partially covered areas, as
per EN 15502, with a maximum am-
bient temperature of 60°C and a min-
imum 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 anti-
freeze function.
d
IT IS FORBIDDEN
–To block or reduce the size of the venti-
lation openings of the room where the
appliance is installed, if present.
–Remove the mains power and gas sup-
ply from the appliance if the external
temperature could fall below ZERO
(risk of freezing).
–To leave containers with flammable
substances in the room where the ap-
pliance is installed.
–To dispose of the packaging material
irresponsibly as it could be danger-
ous. Packaging must be disposed of as
specified by the legislation in force in
the country where the appliance will be
used.
–Do not install the boiler in special en-
vironments that may limit its optimum
operation (e.g. marine environment).
–To spray aerosols in the vicinity of this
appliance while it is in operation.
–To use or store flammable materials in
or near this appliance.
–To place articles on or against this ap-
pliance.
–To modify this appliance.

4
Dear Customer,
Thank you for purchasing a
Sime Brava Slim HE R boiler, a
new-generation condensing modulating device possessing
technical and performance characteristics capable of satisfying
your heating requirements with the utmost safety and with lim-
ited running costs.
RANGE
MODEL CODE
Brava Slim HE 20 R i - (Natural gas) 8112265
Brava Slim HE 20 R e - (Natural gas) 8112266
Brava Slim HE 40 R i - (Natural gas) 8112267
Brava Slim HE 40 R e - (Natural gas) 8112268
COMPLIANCE
Our company declares that Brava Slim HE R boilers comply with
the following Australian Standards
–AS/NZS 5601 Gas Installations
–AS/NZS 3500 Water services, Sanitary plumbing and drainage
–AS/NZS 3000 Electrical installations, Buildings, structures
and premises
License Number: SAI-400196 .
SYMBOLS
a
WARNING
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
ELECTRICAL HAZARD
To indicate actions which, if not carried out correct-
ly, could lead to injury of an electrical nature; these
actions therefore require particular caution and ade-
quate preparation.
d
IT IS FORBIDDEN
To indicate actions which MUST NOT BE carried out.
m
CAUTION
To indicate particularly important and useful informa-
tion.
MANUAL STRUCTURE
This manual is organized as follows.
USER INSTRUCTIONS
TABLE OF CONTENTS 5
DESCRIPTION OF THE APPLIANCE
TABLE OF CONTENTS 13
INSTALLATION AND SERVICING
INSTRUCTIONS
TABLE OF CONTENTS 21

5
USER INSTRUCTIONS
TABLE OF CONTENTS
1USING THE BOILER BRAVA SLIM HE R 6
1.1 Control panel ...................................6
1.2 Preliminary checks ..............................7
1.3 Ignition ........................................7
1.4 Adjusting the heating temperature .................7
1.5 Fault / malfunction codes .........................7
2SHUTDOWN 8
2.1 Temporary shutdown.............................8
2.2 Shutting down for long periods ....................8
3MAINTENANCE 9
3.1 Adjustments....................................9
3.2 External cleaning................................9
3.2.1 Cleaning the cladding................... 9
4DISPOSAL 9
4.1 Disposal of the equipment (European Directive
2012/19/EU) ....................................9
5HANDOVER INSTRUCTIONS 10
6SERVICE RECORDS 10

6
1USING THE BOILER BRAVA SLIM HE R
1.1 Control panel
21
Fig. 1
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. (Note: the "SUMMER" mode is not ap-
plicable to this boiler).
(In "parameter setting", the user can scroll through the
parameter index (decreasing) by pressing this button.
tDuring normal operation, pressing this button displays
the flow temperature set point which can be between 20
and 80°C. In "parameter setting", the user can scroll
through the parameter index (increasing) by pressing
this button.
<During normal operation, pressing this button allows the
user to reduce the flow temperature set point. In "pa-
rameter setting/display", the user can modify the pa-
rameter setting or value (decreasing) by pressing this
button.
>During normal operation, pressing this button allows
the user to increase the flow temperature set point. In
"parameter setting/display", the user can modify the
parameter setting or value (increasing) by pressing this
button.
cProgramming connector cover plug.
NOTE: pressing any one of these buttons for more than 30 sec-
onds generates a fault on the display without preventing boiler
operation. The warning disappears when normal conditions are
restored.
2 DISPLAY
l
“SUMMER” . The symbol for "Summer" mode is dis-
played. If the symbols l and n are flashing, this indi-
cates that the chimney sweep function is active.
n
“WINTER” . This symbol appears when the boiler is oper-
ating in "Winter" mode. If no operating modes have been
enabled both symbols l and n will 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.
t
“HEATING” . This symbol lights up during heating oper-
ation or during the "chimney sweep function It flashes
during 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
parameter setting/display, or "info" or "counter", or in
"activated 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.
a
“HEATING SYSTEM PRESSURE" . Display of heating system
pressure.
E
"ECO", ALTERNATIVE ENERGY SOURCES . Where active, it
indicates that there is a solar system available.
c
"MAINTENANCE REQUEST" . If active, it shows it is time to
perform maintenance on the boiler.
m
CAUTION
–Access to the control panel of models Brava Slim HE
20 R e
and Brava Slim HE 40 R e is possible after loos-
ening screw (1) and removing panel (2).
–On completion of the operations, refit the panel on
the control panel and secure fully.
a
b
1
2
Fig. 2

7
1.2 Preliminary checks
a
WARNING
–Should it be necessary to access the areas in the
bottom part of the appliance, make sure that the
system components and pipes are not hot (risk of
burning).
–Before replenishing the heating system, put on pro-
tective gloves.
Commissioning of the
Brava Slim HE R boiler must be carried
out by professionally qualified technicians, after which the boil-
er can operate automatically. It may, however, be necessary for
the user to start the appliance autonomously without involving a
technician: for example, after a holiday.
First of all check that the gas isolation and water system valves
are open.
1.3 Ignition
After having carried out the preliminary checks, perform the
following to start the boiler:
–set the main system switch to "ON" in order for the display to
show the pressure level in the system during refilling
–
make sure that the operating mode is set to "Stand-by"; if this is
not the case, press the button y until "Stand-by" mode has
been selected
ON
Fig. 3
–on the display (1), check that the heating system pressure
when cold is
1-1.2 bar (100-120 kPa) . Otherwise, open the fill-
ing valve, which is to be prearranged on the system return,
and fill until a pressure of
1-1.2 bar (100-120 kPa) is shown on
the display (1)
–close the filling valve
1
Fig. 4
–select the "WINTER" l operating mode by pressing the
ybutton twice. the value of the delivery sensor detected at
that moment will appear on the display
–set the room thermostat to the required temperature, or if
the system is equipped with a timed programmer or external
temperature controller, check that this is ON and set accord-
ingly.
1.4 Adjusting the heating temperature
If the heating temperature is to be increased or decreased,
press the buttont followed by the buttons > or < until the de-
sired temperature is reached. The temperature can be set to
between 20 and 80°C.
1.5 Fault / malfunction codes
If a fault/malfunction is detected during boiler operation, the
message
"ALL" will appear on the display followed by the fault
code.
If you see alarm
“02” (low water pressure in the system):
–on the display (1), check that the heating system pressure
when cold is
1-1.2 bar (100-120 kPa) . Otherwise, open the fill-
ing valve, which is to be prearranged on the system return,
and fill until a pressure of
1-1.2 bar (100-120 kPa) is shown on
the display (1)
–press and hold the button y for more than 3 seconds and
check whether normal operating conditions are restored
–close the filling valve
1
Fig. 5

8
If you see alarm “06” (no flame detected) and “07” (safety ther-
mostat intervention):
–press and hold the button y for more than 3 seconds and
check whether normal operating conditions are restored.
If this operation is not successful, ONLY ONE MORE ATTEMPT can
be made, therefore:
–close the gas isolation valve
–set the main system switch to "OFF"
–contact the Qualified Technical Personnel.
OFF
Fig. 6
m
CAUTION
Should you see an alarm not described here, contact a
qualified technical professional.
2SHUTDOWN
2.1 Temporary shutdown
If the user wishes to interrupt boiler operation, press and hold
the button y for at least one second, once if in "WINTER
mode" n or twice if in "SUMMER mode" l.
"- -" will appear on the display.
f
ELECTRICAL HAZARD
The boiler will still be powered.
If the user is away temporarily, for a weekend, short trip etc and
if the outside temperature is at ZERO:
–press and hold the button y once if in "WINTER mode" n
or twice if in "SUMMER mode" l to put the boiler into stand-
by
–set the main system switch to "OFF"
–close the gas valve.
OFF
Fig. 7
m
CAUTION
If the outside temperature might fall below ZERO,
since the appliance is equipped with an "antifreeze
function" and the "anti-freeze kit to -15°C":
–PUT THE BOILER INTO STAND-BY
–leave the main system switch set to "ON" (boiler is
powered)
–leave the gas valve open.
2.2 Shutting down for long periods
If the boiler is to be left unused for a long period, the following
operations need to be carried out:
–press and hold the button y for at least 1 second, once if in
"WINTER mode" n or twice if in "SUMMER mode" l to put
the boiler into stand-by
"- -" will appear on the display
–set the main system switch to "OFF"
OFF
Fig. 8
–close the gas valve
–close the heating system isolation valves
–drain the heating system if there is the risk of freezing.
m
CAUTION
Contact the Qualified Technical Personnel if the pro-
cedure described above cannot be easily carried out.

9
3MAINTENANCE
3.1 Adjustments
For the appliance to operate correctly and efficiently it is recom-
mended that the User calls upon the services of a Professionally
Qualified Technician to carry out
BI-ANNUAL maintenance.
m
CAUTION
Maintenance interventions must ONLY be carried out
by professionally qualified personnel who will follow
the indications authorised in the INSTALLATION AND
MAINTENANCE INSTRUCTIONS.
3.2 External cleaning
a
WARNING
–Should it be necessary to access the areas in the
bottom part of the appliance, make sure that the
system components and pipes are not hot (risk of
burning).
–Before performing any maintenance, put on protec-
tive gloves.
3.2.1 Cleaning the cladding
When cleaning the cladding, use a cloth dampened with soap
and water or alcohol for stubborn marks.
d
IT IS FORBIDDEN
to use abrasive products.
4DISPOSAL
4.1 Disposal of the equipment (European Di-
rective 2012/19/EU)
At the end of their life span, the appliance
and electrical and electronic devices coming
from households or classifiable as household
waste must be delivered to appropriate waste
collection systems, in accordance with the law
and with Directive 2012/19/EU. This product
was designed and manufactured for minimis-
ing its impact on the environment and on hu-
man health, but it contains components that
could be detrimental if managed improperly.
The symbol (crossed-out wheelie bin) depict-
ed here and also appearing on your appliance
means that the appliance at the end of its life
must be managed in accordance with the law
and treated as electrical and electronic waste.
Before delivering the appliance for its disposal,
consult the applicable provisions of the laws in
force in the country where the appliance is used
and get information on the authorised waste
disposal facilities by contacting the relevant lo-
cal offices.
d
IT IS FORBIDDEN
dispose of the product with urban waste.

10
5HANDOVER INSTRUCTIONS
N° Description

When done
1Fill in all the details on this Boiler manual.
2Instruct the end user on how to correctly operate the system. Including how to turn the system on and
off, adjust the time and temperature settings.
3 Instruct how to turn theheating system off in summer and on for winter.
4Show end user how to locate all major components and ensure they understand their functions.
Explain how to check them and turn them on or off. Teach simple fault resolution.
5 Instruct how to check for air in a radiator, and bleed it from the system. Provide a bleed key.
6Turn ONgas, bleed air out at the isolation valve unions. Reseal and check for gas leaks.
Turn gas OFF.
7 Outline the importance of the below SERVICE RECORDS, and instruct to keep them safe & accessible.
8Recommend that the boiler be serviced at/before the start of winter every year, and that the heat
exchangerbe flushed at every service.
For any needs please contact Reece Customer Care 1800 080 055 or [e-mail].
6SERVICE RECORDS
Service – 1 – Year 1
Date
Service technician
Name
PIC Licence No.
Service Company
Contact phone number
Work Completed
Notes

11
Service–2 – Year 3
Date
Service technician
Name
PIC Licence No.
Service Company
Contact phone number
Work Completed
Notes
Service–3 – Year 5
Date
Service technician
Name
PIC Licence No.
Service Company
Contact phone number
Work Completed
Notes
Service–4 – Year 7
Date
Service technician
Name
PIC Licence No.
Service Company
Contact phone number
Work Completed
Notes

12
Service–5 – Year 9
Date
Service technician
Name
PIC Licence No.
Service Company
Contact phone number
Work Completed
Notes
Service–7 – Year 11
Date
Service technician
Name
PIC Licence No.
Service Company
Contact phone number
Work Completed
Notes
Service–8 – Year 13
Date
Service technician
Name
PIC Licence No.
Service Company
Contact phone number
Work Completed
Notes
For any needs please contact Reece Customer Care 1800 080 055 or [e-mail].

13
DESCRIPTION OF THE APPLIANCE
TABLE OF CONTENTS
7DESCRIPTION OF THE APPLIANCE 14
7.1 Characteristics ................................14
7.2 Check and safety devices ........................14
7.3 Identification ..................................14
7.4 Structure .....................................15
7.4.1 Brava Slim HE 20 R i - Brava Slim HE 40 R i....15
7.4.2 Brava Slim HE 20 R e
- Brava Slim HE 40 R e...16
7.5 Technical features ..............................17
7.6 Main water circuit ..............................18
7.7 Sensors.......................................18
7.8 Expansion vessel ...............................18
7.9 Circulation pump ...............................18
7.10 Control panel ..................................19
7.11 Wiring diagram ................................20

14
7 DESCRIPTION OF THE APPLIANCE
7.1 Characteristics
Brava Slim HE R are last generation condensing wall mounted
boilers which
Sime has produced for heating ONLY. Models Brava
Slim HE R i
are designed for installation in rooms, while models
Brava Slim HE R e are designed specifically for outdoor installa-
tion, protected against atmospheric agents. The main elements
choices made by
Sime for the Brava Slim HE R 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, with respect to the room
where the boiler is installed
– the command and control microprocessor electronic board
provides efficient management of both heating and hot wa-
ter production. It can also be connected to a remote control
with an Open Therm protocol or to room thermostat and/or
external sensor. If connected to an external sensor, the boiler
temperature varies on the basis of the external temperature
according to a selected optimal climatic curve providing sig-
nificant energy and economic savings.
Other special features of the
Brava Slim HE R boilers are:
– use of a smoke probe to control the relative temperatures. If
the temperature exceeds 110°C the boiler will shut down in
safety status, requiring intervention of the Technical Service
department of qualified professional personnel
– 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
– domestic hot water comfort function which allows the time
necessary for the hot water to become available to be reduced
and ensures that the temperature is stable
– screen display of the operating and self-diagnostic parame-
ters with error code display when the fault occurs. This makes
repair interventions easier and allows appliance operation to
be restored correctly.
7.2 Check and safety devices
The Brava Slim HE R boilers are equipped with the following
check and safety devices:
– thermal safety thermostat 100°C
– 3 bar (300 kPa) relief valve
– heating water pressure transducer
– delivery sensor
– DHW sensor
– smoke flue gas probe.
NOTE: the proper fan operation of this boiler is checked elec-
tronically from the control panel. Then the use of an air pressure
switch is not required.
d
IT IS FORBIDDEN
To commission the appliance with safety devices
which do not work or which have been tampered with.
a
WARNING
Safety device may only be replaced by professional
qualified personnel using
Sime original spare parts.
7.3 Identification
The Brava Slim HE R 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. 9
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 op-
erations.

15
7.4 Structure
7.4.1 Brava Slim HE 20 R i - Brava Slim HE 40 R i
1
2
3
4
5
7
10
8
9
6
12 13
15
18
17
16
14
18
19
20
21
22
232425
11
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 Fan
10 Condensate siphon
11 Automatic by-pass
12 Control panel
13 Gas valve
14 System relief valve
15 Boiler drain
16 System pump
17 Water pressure transducer
18 Automatic bleed valve
19 Air-gas mixer
20 Expansion vessel
21 Air inlet pipe
22 Air-smoke chamber
23 Smoke flue gas probe
24 Air inlet
25 Smoke outlet
Fig. 10

16
7.4.2 Brava Slim HE 20 R e - Brava Slim HE 40 R e
15
17
16
14
24
26
25
23
18
19
20
21
22
12 13
2
3
4
5
6
7
10
11
8
9
1
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 Fan
10 Condensate siphon
11 Automatic by-pass
12 Control panel
13 Gas valve
14 System relief valve
15 Boiler drain
16 System pump
17 Water pressure transducer
18 Automatic bleed valve
19 Air-gas mixer
20 Expansion vessel
21 Air inlet pipe
22 Air-smoke chamber
23 Smoke flue gas probe
24 Air inlet
25 Smoke outlet
26 Coaxial duct
Fig. 11

17
7.5 Technical features
DESCRIPTION
Brava Slim HE R
20 R i
- 20 R e 40 R i - 40 R e
CERTIFICATIONS
Country of intended installation AUS
Fuel NATURAL GAS / UNIVERSAL LPG
SAI GLOBAL number SAI-400196
Class NO x 5 (< 70 mg/kWh)
DHW rated useful heat output kW 0,0
HEATING PERFORMANCE
HEAT INPUT
Nominal MJ/h 80 160
Minimum MJ/h 17.0 28.0
HEAT OUTPUT
Nominal (80-60°C) kW 19.7 39.1
Nominal (50-30°C) kW 21.4 42.2
Minimum NATURAL GAS (80-60°C) kW 3.9 6.9
Minimum NATURAL GAS (50-30°C) kW 4.3 7.5
Minimum UNIVERSAL LPG (80-60°C) kW 3.9 6.9
Minimum UNIVERSAL LPG (50-30°C) kW 4.3 7.5
EFFICIENCY
Max useful efficiency (80-60°C) %98.5 97.8
Min useful efficiency (80-60°C) %97.5 98.6
Max useful efficiency (50-30°C) %107.0 105.5
Min useful efficiency (50-30°C) %107.5 107.1
ELECTRICAL SPECIFICATIONS
Power supply voltage V230
Frequency Hz 50
Absorbed electrical power W105 135
Electrical protection degree IP X5D
COMBUSTION DATA
Smoke temperature at Max/Min flow (80-60°C) °C 82/66 75 / 62
Smoke temperature at Max/Min flow (50-30°C) °C 59/45 54 / 39
Smoke flow Max/Min g/s 11.2/1.9 18.6 / 3.3
CO
2 at Max/Min flow rate (NATURAL GAS) %9.0/9.0 9.0 / 9.0
CO
2 at Max/Min flow rate (UNIVERSAL LPG) %10.0/10.0 10.0 / 10.0
NOZZLES  GAS
Number of nozzles No. 1
Nozzle diameter (NATURAL GAS-UNIVERSAL LPG) mm 5.3 6.5
Gas consumption at Max/Min flow rate (NATURAL GAS) m
3
/h 2.11/0.42 4.23 / 0.74
Gas consumption at Max/Min flow rate (UNIVERSAL
LPG) m
3
/h 0.83/0.16 3.10 / 0.74
Gas supply pressure (NATURAL GAS/UNIVERSAL LPG) mbar 11.3 / 27.5
kPa 1.13 / 2.75
TEMPERATURE  PRESSURE
Max operating temperature °C 85
Heating adjustment range °C 20÷80
Max operating pressure bar 3
kPa 300
Water content in boiler l4.6 5.6
Higher Heat Output (Hs)
NATURAL GAS Hs. 37.78 MJ/m
3
(15°C, 1013 mbar/101.3 kPa) - UNIVERSAL LPG Hs. 95.65 MJ/m
3
(15°C, 1013 mbar/101.3 kPa)

18
7.6 Main water circuit
3
4
5
11
12
13
98
7
10
14
15 16 17
6
M G RSc S
2
1
Fig. 12
KEY:
MSystem delivery
RSystem return
GGas supply
Sc Condensate outlet
SSafety valve outlet
1 Condensing heat exchanger
2 Combustion chamber
3 Fan
4 Thermal safety thermostat
5 Delivery sensor
6 Automatic by-pass
7 Pressure transducer
8 Automatic bleed valve
9 Pump
10 System expansion vessel
11 Gas valve
12 Boiler drain
13 System relief valve
14 Condensate siphon outlet
15 System delivery valve
16 Gas valve
17 System return valve
7.7 Sensors
The sensors installed have the following characteristics:
–Dual sensor (thermal safety/output) NTC R25°C; 10kΩ β25°-
85°C: 3435
–domestic hot water sensor NTC R25°C; 10kΩ β25°-85°C: 3435
–External temperature sensor NTC R25°C; 10kΩ β25°-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
7.8 Expansion vessel
The expansion vessel installed on the boilers has the following
characteristics:
Description U/M
Brava Slim HE R
20 R i
- 20
R e
40 R i - 40
R e
Total capacity l9.0 10.0
Prefilling pressure kPa 100
bar 1.0
Useful capacity l5.0 6.0
Maximum system content (*) l124 140
(*) Conditions of:
Average operating temperature 70°C (with high tempera-
ture system 80/60°C)
Start temperature at system filling 10°C.
m
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 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 (10 kPa)
for each meter increase.
7.9 Circulation pump
The flow-head performance curve available for the heating sys-
tem is shown in the graph below.
RESIDUAL HEAD (mbar/kPa)
0
0 800 1000 1200600400200
100
/10
200
/20
300
/30
400
/40
500
/50
600/60
40Ri - 40Re
20Ri - 20Re
WATER FLOW RATE (l/h)
Fig. 13
m
CAUTION
The appliance is equipped with a by-pass which en-
sures water circulation in the boiler when the thermo-
static valves or manual valves are used in the system.

19
7.10 Control panel
21
Fig. 14
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. (Note: the "SUMMER" mode is not ap-
plicable to this boiler).
(In "parameter setting", the user can scroll through the
parameter index (decreasing) by pressing this button.
tDuring normal operation, pressing this button displays
the flow temperature set point which can be between 20
and 80°C. In "parameter setting", the user can scroll
through the parameter index (increasing) by pressing
this button.
<During normal operation, pressing this button allows the
user to reduce the flow temperature set point. In "pa-
rameter setting/display", the user can modify the pa-
rameter setting or value (decreasing) by pressing this
button.
>During normal operation, pressing this button allows
the user to increase the flow temperature set point. In
"parameter setting/display", the user can modify the
parameter setting or value (increasing) by pressing this
button.
cProgramming connector cover plug.
NOTE: pressing any one of these buttons for more than 30 sec-
onds generates a fault on the display without preventing boiler
operation. The warning disappears when normal conditions are
restored.
2 DISPLAY
l
“SUMMER” . The symbol for "Summer" mode is dis-
played. If the symbols l and n are flashing, this indi-
cates that the chimney sweep function is active.
n
“WINTER” . This symbol appears when the boiler is oper-
ating in "Winter" mode. If no operating modes have been
enabled both symbols l and n will 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.
t
“HEATING” . This symbol lights up during heating oper-
ation or during the "chimney sweep function It flashes
during 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
parameter setting/display, or "info" or "counter", or in
"activated 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.
a
“HEATING SYSTEM PRESSURE" . Display of heating system
pressure.
E
"ECO", ALTERNATIVE ENERGY SOURCES . Where active, it
indicates that there is a solar system available.
c
"MAINTENANCE REQUEST" . If active, it shows it is time to
perform maintenance on the boiler.
m
CAUTION
–Access to the control panel of models Brava Slim HE
20 R e
and Brava Slim HE 40 R e is possible after loos-
ening screw (1) and removing panel (2).
–On completion of the operations, refit the panel on
the control panel and secure fully.
a
b
1
2
Fig. 15

20
7.11 Wiring diagram
TRA
EV
F
CN11
TA1
SE
CR
PI
230 V - 50 Hz
L
N
CN6
CN5
CN3
CN17
CN4 CN1
CN15
CN14
CN13CN12
CN2
V
SF
TS
TFU
SM
4 3 2 1
EAR
SAUX
BLACK BLACK
TA2
321 4 5 6
TPA
5V GND OUT
BLUE BLUE
GREEN GREEN
BLACK BLACK
BLACK
BLACK
BLUE
BROWN
RED
RED
RED GREEN BLACK BLUE
BLACK
BLACK
BLUE BLUE
BLUE
BLACK
GREEN
RED
BLUE
BROWN
RED
ORANGE
GREEN
L Line
N Neutral
F Fuse (3.15AT - 250V)
TRA Ignition transformer
PI System pump
V Fan
EAR Ignition / Detection electrode
EV Gas solenoid valve
SM Delivery sensor
SAUX Auxiliary sensor
TS Safety thermostat
TFU Thermal fuse
SF Smoke flue gas probe
TPA Pressure transducer
TA1-TA2 Air thermostat
SE External sensor
To connect the "Air Thermostat" or, alternatively the "Remote Control", remove the bridge
between terminals 5-6. Fig. 16
m
CAUTION
Users must:
– Use an omnipolar cut-off switch, disconnect switch
in compliance with AS/NZS 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
m
CAUTION
Users must:
– 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
wiring diagrams.
d
IT IS FORBIDDEN
To use water pipes for earthing the appliance.