Sime Mia HE 25 C10 Manual

Fonderie SIME S.p.A. 6333504 - 07/2023- R0
Cod.
USER, INSTALLATION AND SERVICING INSTRUCTIONS
MIA HE C10
To consult the documentation,
visit our website www.sime.it
Condensing sealed wall-mounted boiler
EN
TRANSLATION OF THE ORIGINAL INSTRUCTIONS

2
Dear Customer,
Thank you for purchasing a
Sime MIA HE C10 boiler, a new-
generation modulating condensing device with technical features
and excellent performance, allowing you to satisfy your heating
and instant domestic hot water requirements with the utmost
safety and limited running costs.
RANGE
MODEL CODE
Mia HE 25 C10 8116630
Mia HE 30 C10 8116632
Mia HE 40 C10 8116634
NOTE: Some models may NOT be available in some countries.
COMPLIANCE
Our company declares that MIA HE C10 boilers comply with the
following directives:
–Gas Appliances EU Regulation 2016/426
–Boiler Efficiency Directive 92/42/EEC
–Low Voltage Directive 2014/35/EU
–Electromagnetic Compatibility Directive 2014/30/EU
–Ecodesign Directive 2009/125/EC
–Regulation (EU) No. 811/2013 - 813/2013
–Regulation (EU) No. 2017/1369
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 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.
MANUAL STRUCTURE
This manual is organized as follows.
USER INSTRUCTIONS
TABLE OF CONTENTS 5
DESCRIPTION OF THE APPLIANCE
TABLE OF CONTENTS 11
INSTALLATION AND SERVICING
INSTRUCTIONS
TABLE OF CONTENTS 19

3
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 .
– If the power cable is damaged, replace
it with a cable ordered as a spare part
with the same characteristics (type X).
Assembly must be by carried out by a
qualified professional.
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. Once the work is complete,
the company or technician will issue a
declaration of conformity with national
and local technical standards and
legislation in force in the country where
the appliance will be used.
–
Any repairs on the appliance must be
carried out solely by professionally
qualified personnel, using original
spare parts only. Failure to comply with
these instructions can jeopardise the
appliance’s safety and void the warranty
with immediate effect.
–
Fonderie SIME S.p.A. reserves the right
to make improvements to its products
at any time without prior notice,
without compromising their essential
characteristics.Thegraphicillustrations
and/or images in this document may
show optional accessories that vary
according to the country in which the
appliance is used.

4
RESTRICTIONS
d
IT IS FORBIDDEN
– To allow children under the age of 8 to
use the appliance. The appliance can
be used by children no younger than
8 years old, by people with physical or
cognitive disabilities, and by people
lacking experience or the necessary
knowledge, provided that they are
supervised or have been instructed on
how to use the appliance safely and that
they understand the risks associated
with it.
– To allow children to play with the
appliance.
– To allow unsupervised children to
perform user maintenance and
cleaning.
– 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
assistance.
– To touch the appliance with bare feet or
with any wet part of the body.
– To 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.
– To modify the safety or adjustment
devices without authorization and
instructions from the manufacturer.
d
IT IS FORBIDDEN
– To block the condensate drain (if
present).
– 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
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.
– To 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).
– To leave containers with flammable
substances in the room where the
appliance is installed.
– To dispose of the packaging material
irresponsibly as it could be dangerous.
Packaging must be disposed of as
specified by the legislation in force in
the country where the appliance will be
used.

5
USER INSTRUCTIONS
TABLE OF CONTENTS
1 USING THE BOILER MIA HE C10 6
1.1 Control panel ...................................6
1.2 Preliminary checks ..............................7
1.3 Ignition ........................................7
1.4 Adjusting the delivery temperature .................7
1.5 Adjusting the domestic hot water temperature .......7
1.6 Fault / malfunction codes .........................8
2 SHUTDOWN 8
2.1 Temporary shutdown.............................8
2.2 Shutting down for long periods ....................8
3 MAINTENANCE 9
3.1 Adjustments....................................9
3.2 External cleaning................................9
3.2.1 Cleaning the cladding................... 9
4 DISPOSAL 9
4.1 Disposal of the equipment (European Directive
2012/19/EU) ....................................9

6
1 USING THE BOILER MIA HE C10
1.1 Control panel
3
1 12 2
2 2
2
Fig. 1
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.
RThis 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.
NOTE: 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 "Malfunction codes and possible
solutions".
H
"MAINTENANCE REQUEST" . If active, it shows it is time to
perform maintenance on the boiler.

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
protective gloves.
Commissioning of the
MIA HE C10 boiler must be carried out
by professionally qualified Personnel after which the boiler
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 . In these cases certain
checks and the following operations must be carried:
– check that the gas isolation and water system valves are open
– using a pressure gauge (1), check that the heating system
pressure when cold is
1-1.2 bar . If this is not the case, open the
filling valve (2) and restore the heating system pressure until
the pressure gauge (1) shows a reading of
1-1.2 bar
– close the filling valve (2).
2 1
Fig. 2
1.3 Ignition
After having carried out the preliminary checks, perform the
following to start the boiler:
– set the main system switch to "ON"
ON
Fig. 3
– on the display, check that the operating mode on the display
is "SUMMER” land if necessary select it by pressing and
holding the button sfor at least 1 second. 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.
Once the boiler has been commissioned in "SUMMER mode"l
"WINTER mode" ncan be selected by pressing and holding the
buttonsfor at least 1 second. the value of the heating water
temperature detected at that moment will appear on the display.
In this case it is necessary to adjust the air thermostat/s to the
required temperature or if the system has a chrono-thermostat,
check that this is "active" and adjusted.
1.4 Adjusting the delivery temperature
Should you wish to increase or decrease the boiler delivery
temperature, turn the dial tto the desired setpoint. The value
can be set to between 20°C and 80°C.
Fig. 4
1.5 Adjusting the domestic hot water
temperature
Should you wish to increase or decrease the domestic hot water
temperature, turn the dial rto the desired setpoint. The value
can be set to between 10°C and 60°C.
Fig. 5

8
1.6 Fault / malfunction codes
If a fault/malfunction is detected during boiler operation, the
message
"AL" will appear on the display followed by the fault
code.
If you see alarm “02” (low water pressure in the system):
– using a pressure gauge (1), check that the heating system
pressure when cold is
1-1.2 bar . If this is not the case, open the
filling valve (2) and restore the heating system pressure until
the pressure gauge (1) shows a reading of
1-1.2 bar
– close the filling valve (2)
– press and hold the oRbutton for more than 3 seconds and
check whether normal operating conditions are restored.
2 1
Fig. 6
If you see alarm “06” (no flame detected) and “07” (safety
thermostat intervention):
– press and hold the oRbutton 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. 7
m
CAUTION
Should you see an alarm not described here, contact a
qualified technical professional
.
2 SHUTDOWN
2.1 Temporary shutdown
If the user wishes to interrupt boiler operation, press and hold
the button sfor at least one second, once if in "WINTER mode"
nor 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 sonce if in "WINTER mode" nor
twice if in "SUMMER mode" lto put the boiler into stand-by
– set the main system switch to "OFF"
– close the gas valve.
OFF
Fig. 8
m
CAUTION
If the outside temperature might fall below ZERO, since
the appliance is equipped with an "antifreeze function"
– ONLY 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 sfor at least 1 second, once if in
"WINTER mode" nor twice if in "SUMMER mode" lto put
the boiler into stand-by
"- -" will appear on the display

9
– set the main system switch to "OFF"
OFF
Fig. 9
– close the gas valve
– close the heating and domestic hot water isolation valves
– drain the heating and domestic hot water system if there is the
risk of freezing.
m
CAUTION
Contact the Qualified Technical Personnel if the
procedure described above cannot be easily carried out.
3 MAINTENANCE
3.1 Adjustments
For the appliance to operate correctly and efficiently it is
recommended that the User calls upon the services of a
Professionally Qualified Technician to carry out
ANNUAL
maintenance.
m
CAUTION
Maintenance must ONLY be carried out by qualified
professionals who follow the indications provided 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
protective 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.
4 DISPOSAL
4.1 Disposal of the equipment (European
Directive 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 minimising
its impact on the environment and on human
health, but it contains components that could
be detrimental if managed improperly. The
symbol (crossed-out wheelie bin) depicted 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 local offices.
d
IT IS FORBIDDEN
dispose of the product with urban waste.

10

11
DESCRIPTION OF THE APPLIANCE
TABLE OF CONTENTS
5 DESCRIPTION OF THE APPLIANCE 12
5.1 Characteristics ................................12
5.2 Check and safety devices ........................12
5.3 Identification ..................................12
5.4 Structure .....................................13
5.5 Technical features ..............................14
5.6 Main water circuit ..............................15
5.7 Sensors.......................................16
5.8 Expansion vessel ...............................16
5.9 Circulation pump ...............................16
5.10 Control panel ..................................17
5.11 Wiring diagram ................................18

12
5 DESCRIPTION OF THE APPLIANCE
5.1 Characteristics
MIA HE C10 are last generation condensing wall mounted boilers
which
Sime has produced for heating and domestic hot water
production. The main design choices made by
Sime for the MIA
HE C10
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
installed, depending on the smoke outlet configuration adopted
during installation
– the microprocessor electronic control board, which makes
the heating and domestic hot water production system easier
to manage and offers the option to be connected to room
thermostats or to a remote control (with Open Therm protocol)
and also to an external sensor. Where connected to an external
sensor, the boiler temperature varies on the basis of the external
temperature, according to the selected optimal climatic curve.
This provides significant energy and cost savings.
Other special features of the
MIA HE C10 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
– 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.
5.2 Check and safety devices
The MIA HE C10 boilers are equipped with the following check and
safety devices:
– thermal safety thermostat 100°C
– 3 bar relief valve
– heating water pressure switch
– delivery sensor
– DHW sensor
– smoke flue gas probe.
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.
5.3 Identification
The MIA HE C10 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 on the side of the appliance
and provides the technical data, appliance performance and
any other information required by law.
MIA HE ...
3
1
Fonderie SIME S.p.A.
Via Garbo, 27 - 37045 Legnago - VR (Italy) - Tel. [phone]
MIA HE 25 8116600
9999999999
230V~ - 50Hz - 84 W
2018
4,00
20,00
24,00
4,00
2,45
---
85
60
11,0
NOx class 6
1312CR6307
IP X5D
1312
3,8019,60
MADE IN ITALY
CALDAIA A CONDENSAZIONE - CONDENSING BOILER - CALDERA DE CONDENSACION - CALDEIRA A
CONDENSACAO - CHAUDIERE A CONDENSAT ION - CONDENSATIEKETEL - GASBRENNWERTKESSEL -
ȂǽǻǿȊǺ ȉȋȃȇȋȁȄȎȉǿȉ -KONDENZACIJSKI KOTEL - PLYNOVÝ KONDENZ$þNI KOTEL - CONDENSARE
CAZAN -K OCIOLK ONDENSACYJNY- KONDENZÁCIÓS KAZÁNOK - ɅɉɈȿɀɈɌȻɑȲɄɈɃɄ ɅɉɍɀɆ
Q max = Q min =
Q max = Q min =
PMW = T max =
T max =PMS =
P max 80-60°C = P min 80-60°C =
L
L
°C
°C
kW
kW
kW
kW
kW kW
l/min (EN 13203)
PIN n.
n
n
n
n
wnwn
P max 50-30°C = P min 50-30°C =
21,20
kW 4,20 kWnn
G20 G31 G20 G31
G20 G31 G20 G31
20,00
kW
19,60 kW
21,20
kW
4,00 kW
3,80 kW
4,20 kW
24,00
kW 4,00 kW
3 bar 0,3 MPa
7 bar 0,7 MPa
G20 20 mbar
G31 37 mba r
II2H3P
GR-SI-CZ-SK-LT-HR G20/G31 20/37mbar (2/3,7 kPa) B23P-B53P-C13-C43-C53-C63-C83
I2E
PL-RO G20 20 mbar (2 kPa) B23P-B53P-C13-C43-C53-C63-C83
I2H
HU G20 25mb ar (2,5 kPa) B23P-B53P-C13-C43-C53-C63-C83
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
1 2
3
Fig. 10
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.

13
5.4 Structure
262728
13
2529
14 16
18
17
15
19
20
21
22
24
23
10 11 12
1
2
6
7
8
9
4
3
5
30
1 Combustion chamber door
2 Oversleeve
3 Heat safety thermostat
4 Air-gas mixer
5 Delivery sensor
6 Condensate siphon
7 Diverter valve
8 System filling unit
9 Domestic hot water sensor
10 Control panel
11 Domestic hot water heat exchanger
12 Gas valve
13 Pressure gauge
14 Flow meter
15 System relief valve
16 Boiler drain
17 System pump
18 Water pressure switch
19 Automatic bleed valve
20 Swing
21 Fan
22 Expansion vessel
23 Ignition/detection electrode
24 Flame viewing window
25 Air inlet closing plate (separate ducts)
26 Smoke flue gas probe
27 Smoke outlet
28 Air inlet (concentric ducts)
29 Plug/socket for attaching the air inlet
pipe (separate ducts)
30 By-pass
Fig. 11

14
5.5 Technical features
DESCRIPTION
MIA HE C10
25 30 40
CERTIFICATIONS
Country of intended installation
UZ
Fuel G20 / G30 / G31
PIN number 1312CT6307
Category II2H3P - II2H3B/P
Type B23P - B53P - C13 - C13X - C33 - C33X - C43 - C43X - C53 - C53X - C63 - C63X
- C83 - C83X - C93 - C93X - C(10)3
Class NO
x 6 (< 56 mg/kWh)
DHW rated useful heat output kW 24,0 30,0 37,7
HEATING PERFORMANCE
HEAT INPUT
Nominal kW 20 24 34,8
Minimum (G20-G31) kW 5,0 5,0 7,5
HEAT OUTPUT
Nominal (80-60°C) kW 19,6 23,6 33,5
Nominal (50-30°C) kW 21,2 25,5 36,4
Minimum G20/G30/G31 (80-60°C) kW 4,8 4,8 7,1
Minimum G20/G30/G31 (80-60°C) kW 5,2 5,2 7,7
EFFICIENCY
Max useful efficiency (80-60°C) %98,2 98,2 96,2
Min useful efficiency (80-60°C) %95,2 95,2 94,3
Max useful efficiency (50-30°C) %105,9 106,1 104,7
Min useful efficiency (50-30°C) %104,7 104,7 102,4
Useful efficiency at 30% of load (40-30°C) %105,7 106,8 106,9
Thermal efficiency (EEC 92/42)
Losses after shutdown at 50°C W82 82 119
DOMESTIC HOT WATER PERFORMANCE
Nominal heat input kW 24 30 37,7
Minimum heat input kW 5,0 5,0 7,5
D.H.W. flow rate ∆T 30°C l/min 11,0 14,2 17
Continuous D.H.W. flow rate (∆T 25°C / ∆T 35°C) l/min 13,7 / 9,8 17,5 / 12,5 21,2 / 15,2
Minimum D.H.W. flow rate l/min 222
Max / Min Pressure bar 7 / 0,5
kPa 700 / 50
ENERGY PERFORMANCE
HEATING
Heating seasonal energy efficiency class AAA
Heating seasonal energy efficiency %90 91 91
Sound power dB(A) 56 57 58
DOMESTIC HOT WATER
Domestic hot water energy efficiency class AAA
Domestic hot water energy efficiency %82 86 86
Stated domestic hot water profile load XL XL XL
ELECTRICAL SPECIFICATIONS
Power supply voltage V230
Frequency Hz 50
Absorbed electrical power (Q
n max) W82 103 111
Absorbed electrical power at (Q
n min) W58 58 70
Absorbed electrical power in stand-by W 4 4 4
Electrical protection degree IP X5D
COMBUSTION DATA
Smoke temperature at Max/Min flow (80-60°C) °C 81 / 63 83 / 64 76 / 66
Smoke temperature at Max/Min flow (50-30°C) °C 60 / 48 68 / 50 62 / 55
Smoke flow Max/Min g/s 11,6 / 2,4 14,5 / 2,4 18,2 / 3,6
CO
2 at Max/Min flow rate (G20) %9,0 / 9,0
CO
2 at Max/Min flow rate (G30) %10,5 /10,5
CO
2 at Max/Min flow rate (G31) %10,0 /10,0
NOx measured (*) mg/kWh 30 33 19
(*) Calculated with upper calorific value (Hs)

15
DESCRIPTION
MIA HE C10
25 30 40
NOZZLES  GAS
Number of nozzles No. 1
Nozzle diameter (G20/G31) mm 5,3 6,3
Gas consumption at Max/Min flow rate (G20) m
3
/h 2,53 / 0,53 3,17 / 0,53 3,98 / 0,79
Gas consumption at Max/Min flow rate (G30) kg/h 1,89 / 0,39 2,36 / 0,39 2,97 / 0,59
Gas consumption at Max/Min flow rate (G31) kg/h 1,86 / 0,39 2,33 / 0,39 2,92 / 0,58
Gas supply pressure (G20/G30/G31) mbar 20 / 30 / 37
kPa 2,0 / 3,0 / 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 l2,45 2,55 3,20
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)
5.6 Main water circuit
3
4
5
14
13
15 16
18
19
109
7
11
17
21
20
12
6
M U G E RSc S
8
2
1
22
Fig. 12
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 Fan
4 Thermal safety thermostat
5 Delivery sensor
6 Domestic hot water heat exchanger
7 Water pressure switch
8 Pressure gauge
9 Automatic bleed valve
10 Pump
11 System expansion vessel
12 Diverter valve
13 Automatic by-pass
14 Domestic hot water sensor
15 Gas valve
16 Domestic hot water flow meter
17 Domestic hot water filter
18 Boiler drain
19 System relief valve
20 System filling
21 Condensate siphon outlet
22 Swing

16
5.7 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
5.8 Expansion vessel
The expansion vessel installed on the boilers has the following
characteristics:
Description U/M
MIA HE C10
25 30 40
Total capacity l7,0 9,0
Prefilling pressure kPa 100
bar 1,0
Useful capacity l4,45 5,2
Maximum system content (*) l110 120
(*) Conditions of:
Average operating temperature 70°C (with high temperature
system 80/60°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.
5.9 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 1200600400200
100
200
300
400
500
600
700
1400
25-30
40
FLOW (l/h)
Fig. 13
m
CAUTION
The appliance is equipped with a by-pass which ensures
water circulation in the boiler when the thermostatic
valves or cocks are used in the system.

17
5.10 Control panel
3
1 12 2
2 2
2
Fig. 14
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.
RThis 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.
NOTE: 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 "Malfunction codes and possible
solutions".
H
"MAINTENANCE REQUEST" . If active, it shows it is time to
perform maintenance on the boiler.

18
5.11 Wiring diagram
BLACK
BLUE
BROWN
TRA
EV
F
CN11
BLUE BLUE
BLACK BLACK
TA1
SE
3456
BROWN
BLUE
PI
VD
2 3
1
BLUE
BROWN
220 V - 50 Hz
L
N
CN6
CN5
CN3
CN17
CN4 CN1
CN15
CN14
CN13CN12
CN2
RED
RED RED
GREEN
WHITE
RED RED
RED
RED
SS PA
V
FLM
SF
TS
SM
VCC GND IN
BLACK
BLACK
BLUE
RED GREEN BLACK BLUE
BLUE
4 3 2 1
BLUE
BLACK
GREEN
RED
BLUE
BROWN
EAR
CR
BLACK BLACK
TA2
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
SS Domestic hot water sensor
SM Delivery sensor
TS Safety thermostat
SF Smoke flue gas probe
FLM Flow meter
VD Diverter valve
PA Water pressure switch
TA1-TA2 Air thermostat
SE External sensor
CR Sime EASY HOME or HOME or HOME
PLUS remote control (alternative to TA1)
To connect the "TA" remove the jumper between terminals 5-6.
Fig. 15
m
CAUTION
Users must:
– Use an omnipolar cut-off switch, disconnect switch
in compliance with EN Standards
which ensures
complete cut-off in overvoltage category III conditions
(i.e. where there is at least 3 mm between the open
contacts)
.
– 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
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.

19
INSTALLATION AND SERVICING INSTRUCTIONS
TABLE OF CONTENTS
6 INSTALLATION 20
6.1 Receiving the product ...........................20
6.2 Dimensions and weight..........................20
6.3 Handling ......................................20
6.4 Installation room ...............................20
6.5 New installation or installation of a replacement
appliance .....................................21
6.6 Cleaning the system ............................21
6.7 Water system treatment .........................21
6.8 Boiler installation ..............................21
6.9 Plumbing connections...........................22
6.9.1 Plumbing accessories (optional) ......... 22
6.10 Condensate outlet/collection .....................22
6.11 Gas supply ....................................22
6.12 Smoke outlet and combustion air inlet .............23
6.12.1 Coaxial duct (Ø 60/100mm and Ø 80/125mm). 24
6.12.2 Separate ducts (Ø 80mm)............... 24
6.13 Electrical connections...........................25
6.13.1 External temperature sensor............ 26
6.13.2 Chrono-thermostat or Air Thermostat .... 27
6.13.3 EXAMPLE of use of the command/control
device on some types of heating systems.. 27
6.14 Refilling or emptying............................27
6.14.1 REFILL operations .................... 27
6.14.2 EMPTYING operations ................. 28
7 COMMISSIONING 29
7.1 Preliminary operations ..........................29
7.2 Before commissioning ..........................29
7.2.1 Automatic self-calibrating procedure ..... 29
7.3 Parameter setting and display ....................30
7.4 List of parameters..............................30
7.5 Display of operating data and counters.............32
7.6 Checks .......................................32
7.6.1 Chimney sweeper function.............. 32
7.7 Gas conversion.................................33
8 MAINTENANCE 34
8.1 Adjustments...................................34
8.2 External cleaning...............................34
8.2.1 Cleaning the cladding.................. 34
8.3 Cleaning the inside of the appliance ...............34
8.3.1 Removing components................. 34
8.3.2 Cleaning the burner and the combustion
chamber ............................ 35
8.3.3 Checking the ignition/detection electrode . 35
8.3.4 Final operations ...................... 35
8.4 Checks .......................................36
8.4.1 Checking the smoke duct............... 36
8.4.2 Checking the expansion vessel pressure .. 36
8.5 Unscheduled maintenance .......................36
8.6 Malfunction codes and possible solutions ..........36
9 ANNEXES 38
9.1 Boiler product board ............................38
9.2 Boiler technical sheet ...........................39

20
6 INSTALLATION
m
CAUTION
The appliance must only be installed by the Sime
Technical Service or by qualified professionals
who
MUST wear
suitable protective safety equipment.
6.1 Receiving the product
MIA HE C10 appliances are delivered in a single unit protected by
cardboard packaging.
Fig. 16
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
– Bag with expansion plugs
d
IT IS FORBIDDEN
To leave packaging material around or near children
since it could be dangerous. Dispose of it as prescribed
by legislation in force.
6.2 Dimensions and weight
H
WD
Fig. 17
Description
MIA HE 25
C10
MIA HE 30
C10
MIA HE 40
C10
W (mm) 420
D (mm) 262
H (mm) 700
Weight (kg) 27 27,5 30
6.3 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. 18
d
IT IS FORBIDDEN
To grip the appliance casing. Hold the "solid" parts of
the appliance such as the base and structural frame.
a
WARNING
Use suitable tools and accident protection when
removing the packaging and when handling the
appliance. Observe the maximum weight that can be
lifted per person.
6.4 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
installation is a "TYPE B" installation.
The minimum temperature of the installation room must NOT be
lower than
-5 °C .
m
CAUTION
– Before assembling the appliance, the installer MUST
make sure that the wall supports the weight.
– Remember to consider the space needed in order to
access the safety/adjustment devices and to carry
out maintenance interventions (see Fig. 19).