Beretta METEO GREEN HE R.S.I. Operation and installation manual

Installer and user manual
Meteo Green HE R.S.I.

2
METEO GREEN HE R.S.I.
METEO GREEN HE R.S.I. boiler complies with basic requirements of the following Directives:
- Gas directive 2009/142/EC;
- Yield directive 92/42/EEC;
- Electromagnetic compatibility directive 2004/108/EC;
- Low-voltage directive 2006/95/EC;
- Directive 2009/125/EC Ecodesign for energy-using appliances;
- Directive 2010/30/EU Indication by labelling of the consumption of energy by energy-related products;
- Delegated Regulation (EU) No. 811/2013;
- Delegated Regulation (EU) No. 813/2013;
- Delegated Regulation (EU) No. 814/2013.
0694
BU1240
RANGE RATED
This boiler can be adapted to the heating requirements of the system, it is possible to change the maximum output in central heating. Refer to chapter
“Adjustments” for calibration.
After setting the desired output (parameter 23 maximum heating) report the value in the table on the back cover of this manual, for future references.
INSTALLER MANUAL - CONTENTS
1 GENERAL SAFETY DEVICES page 3
2 BOILER OPERATING ELEMENTS page 4
3 BOILER DIMENSIONS page 4
4 TECHNICAL DATA page 5
5 MULTIGAS TABLE page 6
6 HYDRAULIC CIRCUIT page 7
7 MULTI-WIRE DIAGRAM page 8
8 ELECTRICAL CONNECTIONS page 9
9 BOILER INSTALLATION page 10
10 HYDRAULIC CONNECTIONS page 11
11 INSTALLING THE EXTERNAL PROBE page 12
12 CONDENSATE COLLECTION page 12
13 GAS CONNECTION page 12
14 ELECTRIC CONNECTION page 12
15 FILLING AND EMPTYING THE SYSTEM page 13
16 FUMES EXHAUSTION AND BURNING AIR SUCTION page 14
17 START-UP AND OPERATION page 16
18 TROUBLESHOOTING page 20
19 RESETTING FAULTS page 24
20 PROGRAMMING PARAMETERS page 25
21 SERIAL NUMBER PLATE page 27
22 ADJUSTMENTS page 27
23 SETTING THE THERMOREGULATION page 32
24 GAS CONVERSION page 33
25 CHECKING COMBUSTION PARAMETERS page 34
26 MAINTENANCE page 34
REMOTE CONTROL USER MANUAL - CONTENTS
1 GENERAL SAFETY INFORMATION page 37
2 SWITCHING ON page 39
3 USING THE REMOTE CONTROL PANEL page 39
4 SWITCHING OFF page 46
GUIDE TO MAIN CONFIGURATIONS page 47
In some parts of the manual, these symbols are used:
ATTENTION = for actions that require particular caution and proper
training
FORBIDDEN = for actions that MUST NOT be performed
This handbook contains data and information for both users and
installers. In detail:
- The chapters entitled “Boiler installation, Hydraulic connections,
Gas connection, Electric connection, Filling and emptying the
system, Fumes exhaustion and burning air suction, Technical
data, Programming parameters, Gas conversion, Checking
combustion parameters” are intended for installers;
- The chapters entitled “General safety devices, Start-up and
operation” are for both users and installers.

3
METEO GREEN HE R.S.I.
INSTALLER MANUAL
1 - GENERAL SAFETY DEVICES
The boilers produced in our factory are built with care down to the last
component to protect both the user and installer from eventual accidents.
We therefore recommend qualified personnel that after working on the
product they should pay particular attention to the wiring, especially the
bare wires, that must not be exposed outside the terminal board for any
rason to prevent any contact with the live parts of the wiring.
This instructions manual is integral parts of the product. Make sure they
remain with the boiler, even if it is transferred to another owner or user
or moved to another heating system. In case of loss or damage, please
contact your local Technical Assistance Service for a new copy.
This boiler may only be installed and serviced by qualified fitters who
satisfy the requirements of local rules. Work must be done in compliance
with regulations in force and subsequent updates.
The boiler must be serviced at least once a year. This should be booked
in advance with the Technical Assistance Service.
The installer shall instruct the user in the operation of the boiler and the
safety devices.
This boiler may only be used for what it was expressly built to do. The
manufacturer declines all contractual and non-contractual liability for
injury to persons or animals or damage to property deriving from errors
made during installation, adjustment and servicing and from improper
use.
This appliance is used to produce hot water and must therefore be
connected to a heating and/or a domestic hot water system, according
to its performance and power.
After removing the packaging, make sure the contents are undamaged
and complete. If this is not the case, contact your dealer.
When the product reaches the end of its life it should not be disposed
of as solid urban waste but should be brought to a separated waste
collection facility.
The safety valve outlet must be connected to a suitable collection and
venting system. The manufacturer declines all liability for any damage
caused by the safety valve.
The safety and automatic adjustment devices on the appliance must
never be modified during its lifetime, except by the maker or dealer.
If the appliance develops a fault and/or works badly, switch it off and do
not attempt to repair it yourself.
Immediately after installation, inform the user that:
- in the event of leaks, he/she must shut off the water supply and
promptly inform the Technical Assistance Service
- GREEN HE R.S.I.: must periodically check, on the display, that the
pressure value is between 1 and 1,5 bar; if not fill the system as
described in the paragraph “Boiler functions”
- if the boiler is not planned to be used for a long period, he/she should
call in the Technical Assistance Service to perform the following
operations:
- turn off the main boiler and general system switches.
- close the gas and water taps on the heating.
- drain the heating circuits to prevent freezing.
Connect the outlet collector to a suitable outlet system (refer to chapter
5 - CONDENSATE COLLECTION).
Safety measures:
The boiler should not be used by children or unassisted disabled people
Electrical devices or equipment, such as switches, appliances, etc.,
should not be used if there is a smell of gas or fumes. If there is a gas
leak, open all the doors and windows to ventilate the area, turn off the
general gas tap and immediately call the Technical Assistance Service
Do not touch the boiler barefoot or if parts of your body are wet or damp
Press the button until “- -” is shown on the display and disconnect the
electricity supply by turning off the two-position system switch, before
cleaning
It is forbidden to modify the safety or adjustment devices without the
manufacturer’s permission and relative instructions
Do not pull, detach or twist the wires from the boiler even if they are not
connected to the power supply
Do not block or reduce the size of the ventilation openings in the room
Do not leave inflammable containers or substances in the room
Keep packaging out of reach of children
Only use appliance for purposes it is devoted to
Do not lean any object on the boiler
Do not tamper with sealed elements
It is forbidden to block the condensate outlet.

4
METEO GREEN HE R.S.I.
2 - BOILER OPERATING ELEMENTS
3 - BOILER DIMENSIONS
1. Electrical connections box
2. Safety valve
3. Three-way solenoid valve
4. Circulation pump
5. Lower air vent valve
6. Siphon
7. Return NTC sensor
8. Expansion vessel
9. Fume probe
10. Fume analysis sample cap
11. Fumes outlet
12. Ignition transformer
13. Upper air vent valve
14. Delivery NTC sensor
15. High limit thermostat
16. Detection electrode
17. Ignition electrode
18. Condensate level sensor
19. Burner
20. Silencier (25 HE only)
21. Main exchanger
22. Fan
23. Mixer
24. Pressure transducer
25. Gas valve
26. Alarm reset button
27. Hydrometer
NOTE: measures in mm
A: condensate outlet
C: water-gas
A
C

5
METEO GREEN HE R.S.I.
4 - TECHNICAL DATA
R.S.I. 25 kW R.S.I. 35 kW
CH Nominal thermal load kW 25.00 34.60
kcal/h 21 500 29 756
Nominal thermal power (80-60°C) kW 24.38 33.74
kcal/h 20 963 29 012
Nominal thermal power (50-30°C) kW 26.20 36.50
kcal/h 22 532 31 393
Reduced thermal load (G20/G31) kW 2.50 / 4.50 3.50 / 6.20
kcal/h 2 150 / 3 870 3 010 / 5 332
Reduced thermal power (80-60°C) (G20/G31) kW 2.49 / 4.47 3.41 / 6.04
kcal/h 2 144 / 3 847 2 929 / 5 193
Reduced thermal power (50-30°C)(G20/G31) kW 2.69 / 4.82 3.71 / 6.57
kcal/h 2 309 / 4 145 3 188 / 5 647
Nominal thermal load Range Rated heat (Cn) kW 25.00 34.60
kcal/h 21 500 29 756
Minimal thermal load Range Rated (Qm) (G20/G31) kW 2.50 / 4.50 3.50 / 6.20
kcal/h 2 150 / 3 870 3 010 / 5 332
Working efficiency Pn max - Pn min (80-60°C) % 97.5 - 99.7 (G31: 99.4) 97.5 - 97.3 (G31: 97.4)
Working efficiency 30% (47°C return) % 102.8 103.1
Combustion efficiency % 97.8 97.7
Working efficiency Pn max - Pn min (50-30°C) % 104.8 - 107.4 (G31: 107.1) 105.5 - 105.9 (G31: 105.9)
Working efficiency 30% (30°C return) % 109.4 108.0
Average Range Rated Pn performance (80-60°C) % 98.1 97.6
Average Range Rated Pn performance (50-30°C) % 105.2 106.1
Electric power W 88 116
Category II2H3P II2H3P
Supply voltage V - Hz 230 - 50 230 - 50
Protection level IP X5D X5D
Chimney losses with burner off-on % 0.10 - 2.16 0.08 - 2.30
CH operation
Maximum pressure - temperature bar - °C 3 - 90 3 - 90
Minimum pressure for standard working/operating bar 0.25 - 0.45 0.25 - 0.45
Selection field of CH water temperature °C 20 - 80 20 - 80
Pump maximum head available for system mbar 320 320
capacity l/h 1 000 1 000
Membrane expansion tank l 10 10
Expansion vessel pre-charge (CH) bar 1 1
Gas pressure
Natural gas pressure (G20) mbar  
LPG pressure (G31) mbar  
Hydraulic connections
CH input-output Ø 3/4" 3/4"
Water tank delivery-return Ø 3/4" 3/4"
Gas input Ø 3/4" 3/4"
Boiler dimensions and weight
Height mm 797 797
Width mm 553 553
Depth mm 268 268
Weight kg 44 45
Fan performance
Fan residual head without pipes Pa 98 199
Flow rates (G20)
Air capacity Nm3/h 31.135 43.090
Fumes capacity Nm3/h 33.642 46.561
Mass flow (max-min) gr/s 11.282 - 1.070 15.614 - 1.498
Fume exhaustion and air suction concentric pipe
Diameter mm 60 - 100 60 - 100
Max lenJWKPP 7.85
Loss for a 90°/45° bend m 1.6 / 1.3 1.6 / 1.3
Hole in the wall mm 105 105
Fume exhaustion and air suction concentric pipe
Diameter mm 80 - 125 80 - 125
Max lengWK PP 1 14.85
Loss for a 90°/45° bend m 1,5 / 1 1.5 / 1
Hole in the wall mm 130 130

6
METEO GREEN HE R.S.I.
R.S.I. 25 kW R.S.I. 35 kW
Fume exhaustion and air suction separated pipe
Diameter mm 80 80
Max lenght m 32 + 32 40 + 40
Loss for a 90°/45° bend m 1.5 / 1 1.5 / 1
Forced open installation (B23P-B53P)
Diameter mm 80 80
Max lenght m 50 60
Loss for a 90°/45° bend m 1.5 / 1 1.5 / 1
Nox 55
Emission values at maximum and minimum of gas G20 **
Maximum CO s.a. lower than p.p.m. 180 180
CO
2% 9.0 9.0
NOx s.a. lower than p.p.m. 45 35
T fumes °C 76 74
Minimum CO s.a. lower than p.p.m. 5.0 10
CO
2% 9.5 9.5
NOx s.a. lower than p.p.m. 10 15
T fumes °C 59 62
* Average value among various sanitary running conditions.
** Tested with Ø60-100 concentric - lenght 0,85m - water temperature 80-60°C.
5 - MULTIGAS TABLE
G20 G31
Lower Wobbe index (15°C-1013 mbar) MJ/m3S 45.67 70.69
Lower heat value MJ/m3S
MJ/kgS
34.02
-
88
46.34
Supply nominal pressure mbar
mm H2O
20
203.9
37
377.3
Supply minimum pressure mbar
mm H2O
10
102.0 -
Meteo Green R.S.I. 25 kW
Diaphragm (number of holes) n. 2 2
Diaphragm (diameter of holes) mm 3.65 2.95
CH maximum gas capacity Sm3/h 2.64 -
kg/h - 1.94
CH minimum gas capacity Sm3/h 0.26 -
kg/h - 0.35
Numbers of fan revolutions at slow start rpm 3 700 3 700
Maximum number of fan revolutions rpm 6 000 6 000
Minimum number of fan revolutions rpm 1 200 1 900
Meteo Green R.S.I. 35 kW
Diaphragm (number of holes) n. 2 2
Diaphragm (diameter of holes) mm 3.80 3.05
CH maximum gas capacity Sm3/h 3.66 -
kg/h - 2.69
CH minimum gas capacity Sm3/h 0.37 -
kg/h - 0,48
Numbers of fan revolutions at slow start rpm 3 300 3 300
Maximum number of fan revolutions rpm 6 000 5 900
Minimum number of fan revolutions rpm 1 200 1 900

7
METEO GREEN HE R.S.I.
Parameter Symbol R.S.I. 25 kW R.S.I. 35 kW Unit
Seasonal space heating energy efficiency class - A A -
Water heating energy efficiency class - - - -
Rated heat output Pnominal 24 34 kW
Seasonal space heating energy efficiency  93 92 %
Useful heat output
At rated heat output and high-temperature regime (*) P4 24,4 33,7 kW
At 30% of rated heat output and low-temperature regime (**) P1 8,2 11,2 kW
Useful efficiency
At rated heat output and high-temperature regime (*)  88,3 87,9 %
At 30% of rated heat output and low-temperature regime (**)  98,5 97,3 %
Auxiliary electricity consumption
At full load elmax 40,0 68,0 W
At part load elmin 16,4 25,8 W
In Stand-by mode PSB 6,3 7,7 W
Other parameters
Stand-by heat loss Pstby 55,0 42,0 W
Pilot flame energy consumption Pign - - W
Annual energy consumption QHE 42 58 GJ
Sound power level, indoors LWA 58 60 dB
Emissions of nitrogen oxides NOx 36 23 mg/kWh
For combination heaters
Declared load profile - -
Water heating energy efficiency  - - %
Daily electricity consumption Qelec - - kWh
Daily fuel consumption Qfuel - - kWh
Annual electricity consumption AEC - - kWh
Annual fuel consumption AFC - - GJ
(*) High-temperature regime means 60 °C return temperature at heater inlet and 80 °C feed temperature at heater outlet.
(**) Low temperature means for condensing boilers 30 °C, for low-temperature boilers 37 °C and for other heaters 50 °C return temperature (at heater inlet).
6 - HYDRAULIC CIRCUIT
A. Water tank delivery (DO NOT USE)
B. Water tank return (DO NOT USE)
C. Heating flow
D. Heating return
G. Safety valve
H. Drain valve
I. Automatic by-pass
L. 3-way motor valve
M. Circulator
N. Lower air vent valve
O. Expansion vessel
P. Return NTC sensor
Q. Primary exchanger
R. Delivery NTC sensor
S. Upper air vent valve
T. Air water separator
U. Manual bleed valve
V. Pressure transducer
Z. Hydrometer
H
I
L
G
M
N
O
P
Q
R
S
T
U
V
Z
ABCD
NOTE (if the external probe or the control panel or both devices are in the boiler) With reference to Delegated Regulation (EU) No. 811/2013, the data in
the table can be used for completing the product card and the labelling for ambient heating appliances, for mixed heating appliances, for assemblies of
appliances for ambient heating, and for temperature control devices and solar devices:
Component Class Bonus
External probe II 2%
Control panel V 3%
External probe + control panel VI 4%

8
METEO GREEN HE R.S.I.
7 - MULTI-WIRE DIAGRAM
NOTE: L-N POLARISATION IS RECOMMENDED Blu Blue Marrone Brown Nero Black Rosso Red Bianco White Viola Violet Rosa Pink Arancione Orange Grigio Grey Valvola gas Gas valve Fusibile Fuse Elettrodo Electrode RISC. • CH SAN. • DHW
3V • 3-way solenoid valve servomotor AC0X • Display board AE02X • Control board CN1-CN12 Connectors E.A. • Ignition electrode E.R. • Detection electrode F • Fuse 3.15 AF F1-F2 • Fuse 4AF ITRF 11 • Remote control interface J1-J24 • Connectors L • Line M10 • Terminal board for external connections in low voltage M2 • Terminal board supplementary pump connection M3-M6 • Terminal board for
external connections in high voltage M4 • Terminal board water tank sensor connection (R.S.I.) N • Neutral OPE • Gas valve operator PWM • Modulating Pump P2 • External supplementary pump REC • Remote control S.BOLL. • Water tank sensor (R.S.I.) S.C. • Condensate sensor S.E. • External sensor S.M. • Primary circuit delivery temperature sensor S.R. • Primary circuit temperature sensor (NTC)
S.S. • Domestic hot water circuit temperature sensor (NTC) (C.S.I.) T.BOLL. • Water tank thermostat (R.S.I.) S.F. • Fume probe T.A.A. • Reset button T.L • Limit thermostat over- temperature water T.P • Pressure transducer TR1 • Main transformer TSC2 • Ignition transformer V HV • Fan power supply 230V V LV • Fan control alarm BE06 • Modulating pump driver circuit board

9
METEO GREEN HE R.S.I.
8 - ELECTRICAL CONNECTIONS
HIGH VOLTAGE CONNECTIONS
Any external connection of a second circulator will be connected to
the terminal black M2 as shown below.
The limit of the zone valves must have free contact tension.
The contacts of the room thermostat must be designed for V= 230
volts.
HIGH VOLTAGE CONNECTIONS
The programmable heating thermostat and ambient thermostat to
be connected as shown in the diagram. The contacts of the room
thermostat and time programmer must be designed for V= 230 volts.
P.O.R. = Programmable Thermostat
Ambient
Thermostat
F = 3.15 A fuse
F = 3.15 A fuse
Zone valves or
Thermostat
HIGH VOLTAGE CONNECTIONS
The programmable heating thermostat to be connected as shown in
the diagram. The contacts of the room thermostat and time program-
mer must be designed for V= 230 volts.
P.O.R. = Programmable Thermostat
LOW VOLTAGE CONNECTIONS
Any low voltage units to be connected as shown in the diagram
below on the terminal M10 disigned for connection of loads in the
low voltage.
TSBT = safety thermostat low temperature
SE = outside probe
REC = remote control panel
S.BOLL = DHW probe
T.BOLL = boiler thermostat

10
METEO GREEN HE R.S.I.
9 - BOILER INSTALLATION
Boiler must only be installed by qualified personnel.
Boiler is available in the following models:
Model Type Category Power
R.S.I. CH only C 25-35 kW
Meteo Green HE R.S.I. is a C-type condensation wall-mounted boiler and
is able to operate:
- CASE A: only heating. The boiler doesn’t supply domestic hot water
Meteo Green HE boilers are fitted with:
- circulation at adjustable speed (PWM = Pulse-Width Modulation)
- 1-10 modulation, the boiler is designed to automatically modulate the flow
rate supplied between a maximum and a minimum (see technical data)
- Range Rated, indicates that the boiler has a device for adapting to the
system’s heat requirements, making it possible to adjust the boiler’s thermal
load to the energy requirements of the building
The following types of fumes outlet are available for this kind of boiler:
B23P; B53P; C13,C13x; C23; C33,C33x; C43,C43x; C53,C53x; C63,C63x;
C83,C83x, C93,C93x.
In B23P configuration (if installed inside), do not install the apparatus in
rooms used as bedrooms, bathrooms, showers or where there are open
vent stacks without own air exchange. The boiler must be installed in an
adequately ventilated room. See the local and national rules aboutetailed
instructions on installing vent stacks, gas pipes and to ventilate the room.
In Cconfiguration the boiler can be installed in any type of room and there
are no limits to aeration conditions and size of room.
For proper installation, we remind you that:
- the boiler must not be installed over a kitchen or any other cooking equip-
ment
- minimum spaces are to be left in order to allow maintenance operations:
at least 5,0 cm every side and 20 cm under the boiler
- it is forbidden to leave inflammable substances in the room
- suitably insulate heat-sensitive walls (e.g.: in wood).
Support plate and integrated pre-installation template are provided for with
the boiler (Fig. 1.1).
Mounting instructions:
- fix the boiler support plate (F) with the template (C) to the wall and use a
plumb to check that it is perfectly horizontal
- trace out 4 holes (Ø 6 mm) for fixing the boiler support plate (F) and 2
holes (Ø 4 mm) for fixing the pre-installation template (C)
- make sure all the measurements are correct, then drill holes in the wall
using a drill and point with the diameter given previously
- fix the plate to the wall by the supplied anchor screws
- make hydraulic connections.
Fit the lower cover (Fig. 1.2) so that its hooks slip into the relative slots in the
lower part of the boiler. Fix the lower cover with the screws A- B (Fig. 1.3)
contained in the documentation envelope in the boiler.
CLEANING THE SYSTEM AND CHARACTERISTICS OF
HEATING CIRCUIT WATER
After installing a new system or replacing a boiler, clean the heating system.
To ensure the product works correctly, after cleaning, additivating and/or
chemically treating the system (e.g.: anti-freeze, film-formers, etc.), make sure
the characteristics of the water satisfy the parameters indicated in the table.
Parameters Water in heating circuit Inlet water
PH 7÷8
Hardness - 15÷20 °F
Appearance - limpid
If water hardness exceeds 28°Fr, it is recommended to use water softeners,
to prevent any limestone deposit in boiler due to excessively hard water.
PUMP DUTY
Meteo Green HE boilers are fitted with a variable speed circulation unit that
is already connected up in terms of plumbing and electrics, and the usable
performance it provides is shown in the graph.
The boilers are fitted with an anti-blocking system that starts an operating
cycle every 24 hours when not used, irrespective of the position of the func-
tion selector.
C
M
R
F
G
- 1.1 -
G
inlet outlet
pressure relief
- 1.2 -
- 1.3 -
A
B

11
METEO GREEN HE R.S.I.
The “anti-blocking” function is only active when the electrical power
supply to the boiler is on.
Operating the circulation system without any water is strictly forbidden.
VARIABLE SPEED CIRCULATION UNIT
The modulating circulating function is only active for the heating function.
When switching the three ways on the plate heat exchanger, the circulation
unit is set at maximum speed. The modulating circulation function applies
only to the boiler circulation unit and not to circulation units on any external
devices connected to it (e.g. booster circulation unit).
Any of 4 operating modes can be chosen, depending on situations and the
type of plant.
By accessing parameter 90 in the technical menu, one of the following pos-
sibilities can be chosen:
1 - VARIABLE SPEED CIRCULATION UNIT WITH PROPORTIONAL

 

3 - VARIABLE SPEED CIRCULATION UNIT WITH MAXIMUM FIXED
MAXIMUM SPEED MODE (P90 = 1)
4 - EXCEPTIONAL USE OF A STANDARD CIRCULATION UNIT WITHOUT
SPEED ADJUSTMENT (P90 = 0)
1 - VARIABLE SPEED CIRCULATION UNIT WITH PROPORTIONAL

In this mode the boiler’s board determines what flow rate curve to adopt
according to the instantaneous power supplied by the boiler.
The boiler controller breaks down the power range within which the boiler
operates in heating mode into various levels. Depending on the power level
in use when heating, one of the speeds available is selected automatically
according to a linear logic:
- maximum power = high speed
- minimum power = low speed
This is used on all types of plants where the machine’s power has been
correctly balanced with the plant’s real needs.
Operationally:
- Access parameter 90
- Set the parameter = 41
NOTE - The parameter 90 = 41 setting is recommended by the manufacturer.
Values exceeding 41 are used in specific cases.
0,0
0,2
0,4
0,6
0,8
1,0
1,2
1,4
1,6
1,8
2,0
2,2
2,4
2,6
2,8
3,0
3,2
3,4
3,6
3,8
4,0
4,2
4,4
4,6
4,8
5,0
5,2
5,4
5,6
5,8
6,0
0 100 200 300 400 500 600 700 800 900 1000 1100 1200
Residual head (m.c.a.)
Plant flow rate (l/h)
MAX
PUMP
MODULATION
AREA
MIN
2 - VARIABLE SPEED CIRCULATION UNIT WITH CONSTANT DT


delivery and return (e.g. if a value of 10 is entered, the circulation unit’s
speed will change to implement a plant flow rate aimed at maintaining the

By periodically sampling the values provided by the boiler delivery/return
sensors, the board increases or decreases the circulation unit’s speed


Vice-versa is sampling is higher than the value set, the speed is increased.
This is used for direct high temperature plants (typical of replacement),
where the boiler is not thermostatically controlled, and where a calculated

When working with a constant delivery temperature and attainment of sta-
bilising the ambient conditions, the average temperature of the radiators

obtained by changing the operating curve, which produces a lower return
temperature that in turn favours high boiler performance and the reduction
of electricity consumption.
Operationally:
- Access parameter 90
- Set the parameter at a value between 2 and 40 (normally between 10
and 20).
3 - VARIABLE SPEED CIRCULATION UNIT WITH MAXIMUM FIXED
MAXIMUM SPEED MODE (P90 = 1)
In this mode the modulating circulation unit works constantly at maximum
speed.
It is used on plants with a high load loss in which the boiler’s head must be
used as much as possible in order to guarantee sufficient circulation (plant
flow rate at maximum speed lower than 600 litres per hour).
This is used when bottles of mixture are involved, with high flow rates in the
circuit downstream.
Operationally:
- Access parameter 90
- Set the parameter = 1
4 - EXCEPTIONAL USE OF A STANDARD CIRCULATION UNIT
WITHOUT SPEED ADJUSTMENT (P90 = 0)
This mode must be used in exceptional cases in which the boiler is to be used
with a traditional circulation unit without a speed adjustment. It presupposes
that the adjustable speed circulation unit has been removed and replaced
with a non-adjustable speed circulation unit.
WARNING!!! The BE06 board connected to connector CN9 must be removed
and replaced with a connector with a jumper to be inserted into connector
CN9. This latter connection is obligatory and if not formed may cause the
system to malfunction.
Operationally:
- Access parameter 90
- Set the parameter = 0
CONFIGURATIONS RECOMMENDED BY THE
MANUFACTURER
EXTERNAL
SENSOR YES
(heat regulation)
EXTERNAL
SENSOR NO
(no heat
regulation)
HIGH TEMPERATURE
(radiators without
thermostatic valves)
PROPORTIONAL
(P90 = 41)


LOW TEMPERATURE
(floor)
PROPORTIONAL
(P90 = 41)
PROPORTIONAL
(P90 = 41)
HIGH TEMPERATURE
(radiators with thermostatic
valves)
PROPORTIONAL
(P90 = 41)
PROPORTIONAL
(P90 = 41)
10 - HYDRAULIC CONNECTIONS
Position and dimensions of hydraulic connections are specified in figure 1.1:
RCH return 3/4"
MCH flow 3/4"
GGas connection 3/4"
FSupport plate
CPre-installation template

12
METEO GREEN HE R.S.I.
11 - INSTALLING THE EXTERNAL PROBE
The sensor (Fig. 1.4) must be installed on an external wall of the building
you want to heat, while taking care to comply with the instructions below:
- It must be fitted on the facade most often exposed to wind, on a wall
facing SOUTH or SOUTH-EAST, and taking care to avoid direct sunlight.
- It must be fitted about 2/3 up the height of the façade.
- It must not be near any doors, windows, outlets for air ducts, or near
chimneys or other heat sources.
The electrical connection to the external sensor must be formed using a two-
pole cable (not supplied), with a cross-section of 0,5 to 1 mm² and a maximum
length of 30 metres. It is not necessary to worry about the polarity of the cable
for the connection to the external sensor. Do not form joints in this cable.
If a joint has to be made it must be watertight and adequately protected.
Any conduiting used for the connection cable must be separate from the
conduits used for the power cables (230 Vac).
WALL MOUNTING OF THE EXTERNAL SENSOR
- Install the probe in an area of smooth wall; for brick walls or other irregular
surfaces, prepare a smooth contact area if at all possible.
- Remove the upper plastic cover by turning it anti-clockwise.
- Identify the wall fixing point and drill a hole for the 5x25 expansion grip.
- Insert the expansion grip into the hole.
- Remove the card from its housing.
- Fix the housing to the wall using the supplied screw.
- Attach the bracket and tighten the screw.
- Loosen the cable grommet screw, push in the probe connection cable and
connect it to the electrical terminal.
Remember to firmly secure the cable grommet to prevent humidity from
entering.
- Put the card back into its housing.
- Close the upper plastic cover by turning it clockwise. Firmly secure the
cable grommet.
12 - CONDENSATE COLLECTION
The outlet collector A (Fig. 1.5) collects: the condensate water, any evacua-
tion water from the safety valve and the system outlet water.
The collector must be connected, by means of a rubber pipe (not sup-
plied), to a suitable collection and evacuation system in the storm water
outlet and in compliance with current regulations.
The external diameter of the collector is 20 mm: we therefore suggest
using an Ø 18-19 mm pipe, to be closed with a suitable clamp (not
supplied).
The manufacturer is not responsible for any damage caused by the lack
of a collection system.
The outlet connection line must have a guaranteed seal.
The manufacturer of the boiler is not responsible for any flooding caused
by interventions of the safety valve.
13 - GAS CONNECTION
Before connecting appliance to gas pipe network, check the following:
- regulations in force are met
- gas type used is the same as set for appliance operation
- pipes are clean.
Gas must be piped externally. If the pipe goes through a wall it must go
through the central opening in the lower part of the template. It is recom-
mended to install an appropriately sized filter on the gas line in case gas
from the mains contains some small solid particles. After installation make
sure that all the joints have been made airtight conforming to standard
installation practices
14 - ELECTRIC CONNECTION
To access the electrical connections, proceed as follows:
- unscrew the lower cover fixing screw B, (Fig. 1.6)
- loosen the fixing screws (A - B) (Fig. 1.3) and remove the shell
- open the terminal board (Fig. 1.7 : high voltage connections 230 V, low
voltage connections.
Connect the appliance to the mains power supply with a switch featuring a
distance of at least 3,5 mm (EN 60335-1, category III) between each wire.
The appliance uses alternating current at 230 Volt/50 Hz, has a power input
of 88 W (25kW R.S.I.) and 116 W (35kW R.S.I.) and complies with EN 60335-
1 standard. Connect the boiler to a safe earth circuit according to current
legislation. Live and neutral (L-N) connections should also be respected.
- 1.4 -
- 1.5 -
114
~ 230
A
- 1.6 -
B
The boiler can operate with phase-neutral or phase-phase power supply. For
floating power supply, without an earth-bonded conductor, it is necessary to
use an insulation transformer with secondary anchored to ground.
The earth conductor must be a couple of cm longer than the others.
Gas and/or water pipes may not be used to earth electrical equipment.
The installer is responsible for making sure that the appliance has an
adequate earthing system; the manufacturer shall not be held liable
for eventual damages caused by incorrect usage or failing to earth the
boiler.
Use the supplied power cable to connect the boiler to the mains power
supply. Connect the ambient thermostat and/or time clock as shown in the
electrical diagrams.
When replacing the power cable, use a HAR H05V2V2-F cable, 3 x 0,75
mm², Ø max. external 7 mm.

13
METEO GREEN HE R.S.I.
- 1.7 -
HIGH VOLTAGE CONNECTIONS (230V)
LOW VOLTAGE CONNECTIONS
15 - FILLING AND EMPTYING THE SYSTEM
The central heating system can be filled up once the water mains have been
connected up. This must be done while the installation is cold by:
- turn the caps of the lower (A) and upper (E) automatic bleed valves two
or three times; leave A and E valve caps open for continual air venting
(Fig. 1.8);
- making sure the cold water inlet tap is open
- opening the external filling tap until the pressure on the hydrometer (C)
is between 1 and 1,5 bar (blue zone) (Fig. 1.8).
Close the filling tap after filling it up.
The boiler is equipped with an efficient air separator so that there is no need
to do anything manually.
The burner only ignites when air venting has finished.
NOTE: air extraction from the boiler takes place automatically, through two
automatic bleeding valves, A and E.
The first is situated on the pump, while the second is inside the air chamber.
NOTE: manual filling tap is not supplied with the boiler, foresee one external
or verify if external water tank has one.
Before starting to empty it, remove the electrical feeder by positioning the
general switch for the system on “off”.
- Close the interception devices for the thermal system
- Loosen the system outlet valve (B) manually
- The water from the system is discharged through the outlet collector
(A - Fig. 1.5).
SUGGESTIONS TO CORRECTLY ELIMINATE AIR FROM THE
HEATING SYSTEM AND BOILER (Fig. 1.9)
We recommend carrying out the sequence of operations given below during
first installation or with extraordinary maintenance work:
1. Using a CH11 spanner open the manual air vent valve located above
the air box; the tube supplied with the boiler must be connected to the
valve to let out the water into an outside container.
2. Open the manual system filling stopcock on the water group, wait until
the water starts coming out of the valve;
3. Switch on the boiler leaving the gas cock closed;
4. Use the room thermostat or the remote control panel to activate request
for heat so that the three-way will turn to heating;
5. Activate request for hot water as follows:
instant boilers: turn on a tap for 30” every minute so that the three-
way cycles from heating to domestic hot water and vice versa about
ten times (here the boiler will go into alarm as it lacks gas and has to
be reset every time this happens).
Heating only boilers connected to an external water tank: use the
water tank thermostat;
- 1.8 -
C
- 1.9 -
6. Continue the sequence until water only comes out of the manual air
vent valve and the flow of air has finished; close the manual air vent
valve at this point;
7. Make sure the system is at the correct pressure (1 bar is ideal);
8. Close the manual system filling stopcock on the water group;
9. Open the gas cock and ignite the boiler.

14
METEO GREEN HE R.S.I.
16 - FUMES EXHAUSTION AND BURNING AIR
SUCTION
EXHAUSTION CONFIGURATIONS (Fig. 1.10-1.11)
Boiler is homologated for the following exhaustion configurations:
B23P-B53P - Suction in room and discharge outside
C13 - Concentric wall exhaustion. Pipes can separately start from boiler,
but outlets must be concentric or close enough to be subject to similar wind
conditions (within 50 cm)
C23 - Concentric exhaustion in common chimney (suction and exhaustion
in the same chimney)
C33 - Concentric roof exhaustion. Outlets like C13
C43 - Exhaustion and suction in common separate chimneys, but subject
to similar wind conditions
C53 - Wall or roof separate exhaustion and suction in different pressure areas.
Exhaustion and suction must never be located on opposite walls
C63 - Exhaustion and suction with separately certified and sold pipes (1856/1)
C83 - Single or common chimney exhaustion and wall suction
C93 - Exhaust on roof (similar to C33) and air
Refer to regulations in force for exhaustion of combustion products.
Boiler is provided for without fume exhaustion/air suction kit, since forced
draught sealed chamber accessories can be used, as they better adapt
to installation characteristics. For fume extraction and burning air restora-
tion in boiler, use original pipes or other EC-certified pipes with equivalent
characteristics; check connection is correct as shown on instructions fume
accessories provided for with. More appliances can be connected to a single
chimney, provided that all appliances are condensing type.
“FORCED OPEN” INSTALLATION (TYPE B23P-B53P, intake
inside and outlet outside)Fumes outlet duct Ø 80 mm
The fumes outlet duct can be aimed in the most suitable direction for instal-
lation needs. To install follow the instructions supplied with the kit.
In this configuration, the boiler is connected to the Ø 80 mm fumes outlet
duct by means of a Ø 60-80 mm adaptor.
In this case, the combustion supporting air is taken from the room in
which the boiler is installed, which must be a suitable and ventilated
technical room.
Non-insulated fumes outlet ducts are potential sources of danger.
Provision must be made for a 1% slope of the fumes outlet duct towards
the boiler.
Max length fumes outlet
duct Ø 80 mm
Pressure drop for each
bend (45°/90°) [m]
25 R.S.I. 50 m
1 / 1,5
35 R.S.I. 60 m
INSTALLATION “SEALED” (TYPE C)
Boiler is a C-type appliance (sealed chamber) and must be safely connected
to fume exhaustion duct and burning air suction duct, both getting outside;
appliance cannot operate without these ducts.
Concentric outlets (Ø 60-100 mm) (Fig. 1.12)
Concentric ducts may be placed in the most suitable direction for installa-
tion requirements but special care must be taken as regards the external
temperature and the length of the duct.
Horizontal
Max linear length concentric
duct Ø 60-100 mm
Pressure drop for each
bend (45°/90°) [m]
25 R.S.I. 7.85 m
1.3 / 1.6
35 R.S.I. 7.85 m
Vertical
Max linear length concentric
duct Ø 60-100 mm
Pressure drop for each
bend (45°/90°) [m]
25 R.S.I. 8.85 m
1.3 / 1.6
35 R.S.I. 8.85 m
- 1.10 -
C93
rear outlet
B53
max 50 cm
- 1.11 -
- 1.12 -
CONCENTRIC DUCT FOR FUMES OUTLET/AIR INTAKE

15
METEO GREEN HE R.S.I.
- 1.13 -
sealing
rubber
- 1.14 -
Length of the intake duct (m)
25 R.S.I.
Exhaustion lenght (m)
0
5
10
15
20
25
30
35
40
45
50
55
60
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
Length of the intake duct (m)
Exhaustion lenght (m)
35 R.S.I.
Rectilinear length means without bends, outlet ends and connections.
The fumes outlet duct must slope by 1% towards the condensate col-
lector.
Uninsulated fumes outlets are potential hazards.
The boiler automatically adapts ventilation according to the type of
installation and the length of the duct.
Do not obstruct or narrow the comburent air inlet duct in any way.
To install follow the instructions supplied with the kit.
Concentric outlets (Ø 80-125)
For this installation it is necessary to install the suitable adaptor kit. Ducts
may be placed in the most suitable direction for installation requirements.
For the installation process, follow the instructions supplied with the kit for
the specific accessory for condensation boilers.
Max linear length
concentric duct
Ø 80-125 mm
Pressure drop for each
bend (45°/90°) [m]
25 R.S.I. 14,85 m
1 / 1.5
35 R.S.I. 14,85 m
Twin outlets (Ø 80)
The split duct can be aimed in the most suitable direction for installation
needs. Upper cover not used (Fig. 1.13).
The combustion-supporting air intake duct must be connected to the entrance
after having removed the closing cap, attached with three screws, and having
attached a suitable adaptor.
The fumes outlet duct must be connected to the fumes outlet after having
installed a suitable adaptor.
For the installation process, follow the instructions supplied with the kit for
the specific accessory for condensation boilers.
The fumes outlet duct must slope by 1% towards the condensate col-
lector.
The boiler automatically adapts ventilation according to the type of
installation and the length of the duct. Do not obstruct or narrow the
comburent air inlet duct in any way.
For an indication of the maximum lengths of every single pipe, refer to
the graphs (Fig. 1.14).
Using longer ducts causes a loss in the power of the boiler.
Max length twin duct
Ø 80 mm
Pressure drop for each
bend (45°/90°) [m]
25 R.S.I. 32 + 32 m
1 / 1.5
35 R.S.I. 40 + 40 m
Rectilinear length means without bends, outlet ends and connections.

16
METEO GREEN HE R.S.I.
17 - START-UP AND OPERATION
NB: all the adjustments (boiler calibration, thermoregulation setting, pa-
rameter setting) must be made directly on the boiler control panel only.
Ignition, switch-off, function selection and heat requests must ALWAYS
be carried out on the remote control panel only.
This boiler is able to operate only in heating condition.
DESCRIPTION OF COMMANDS
Setting parameters selector
Operating mode button
ON-OFF-RESET
function selector
Heating water circuit
temperature selector
INFO button
Domestic hot water
temperature selector
- Heating water temperature selector: sets the heating water temperature.
- Domestic hot water temperature selector: sets the domestic hot water
temperature storaged in the water tank.
- Setting parameters selector (cases A): using in calibration and pro-
grammation phase.
- Function key:
ON - the boiler is electrically powered and waiting for operating requests
( - )
OFF - the boiler is electrically powered but will not respond to operating
requests
RESET - resets the boiler following a fault
- Operating mode button: button allows to choose the desired
operating mode: pressing it, the indicator “function selector” moves
to: (winter) or (summer, only if water-tank connected - DO
NOT USE).
- Info button: shows a sequence of information concerning the operating
status of the machine.
DESCRIPTION OF DISPLAY SYMBOLS
graduated heating water temperature scale with heating function symbol
graduated domestic hot water temperature scale (DO NOT USE)
domestic hot water function symbol (DO NOT USE)
fault symbol
reset symbol
pressure value
external sensor connection
heating/domestic hot water temperature
or
fault symbol (e.g. 10 - no flame)
function selector (turned to the chosen operating mode: winter or
summer (DO NOT USE)
burner operating symbol
anti-freeze function active symbol
17.1 - SWITCHING ON
Switch on the boiler as follows:
- access the gas tap through the slots in the cover located in the lower part
of the boiler.
- open the gas tap by turning it anti-clockwise (Fig. A)
- power the boiler.
When powered, the boiler performs a test sequence and a series of num-
bers and letters are shown on the display (Fig. B).
If the test is successful the boiler is ready to work about 4 seconds after
the cycle ends.
After being powered, the boiler begins an automatic vent cycle lasting ap-
proximately 2 minutes. The display indicates “sf” and the “function selection
indicators” light up in sequence.
- Press button to interrupt the automatic vent cycle. The display
will look like Fig. C.
- With the door of the remote control panel closed, press the key to view
the required type of operation - summer or winter (fig. 1A).
If the test is unsuccessful, the boiler will not work and a “0” will flash on
the display.
In this case, contact the Technical Assistance Centre.
The boiler turns on in the status it was in before it was switched off: if
the boiler was in the winter mode when it was switched off, it will turn
on again in the winter mode. If it was in the OFF mode, the display will
show two segments in the central area (Fig. D). Press the button to
enable operation.
Choose the desired operating mode by pressing button, until the
symbol moves to:
- WINTER
- SUMMER (DO NOT USE)
WINTER function (Fig. E)
With the selector in this position, the boiler provides hot water for the heat-
ing and, if an external water tank is connected, provides water to the water
tank to allow domestic hot water preparation. Function S.A.R.A is enabled
in this position.
Open position
- A -
PAUSE AUTO MAN
- B -

17
METEO GREEN HE R.S.I.
- C -
- D -
- E -
- F -
SUMMER function (only with external water tank connected,
DO NOT USE Fig. F)
With the selector in this position, the boiler provides water to the water tank
with a temperature stabiliser to allow domestic hot water preparation.
- G -
A
ADJUSTING HEATING WATER TEMPERATURE
Turning the selector A(Fig. G), after having positioned the selector mode
on winter , it is possible to regulate the heating water temperature.
Turn clockwise to increase the temperature and anticlockwise to decrease.
The bar segments light up (every 5°C) as the temperature is increased. The
selected temperature value appears on the display.
The boiler switches on the mode indicated by the remote control panel.
ADJUSTING HEATING WATER TEMPERATURE WITH AN
EXTERNAL SENSOR CONNECTED
When an external probe is connected, the value of the delivery temperature
is automatically chosen by the system which rapidly adjusts ambient tem-
perature to the changes in external temperature. Just the central segment
of the bar is illuminated (Fig. H).
To increase or decrease the temperature with respect to the value auto-
matically calculated by the electronic board, turn the heating water selector
clockwise to increase and anticlockwise to decrease. The bar segments
light up (at every comfort level), correction tolerance lies between - 5 and +
5 comfort levels (Fig. H). When choosing the level of comfort, the digit area
of the display shows the required level of comfort while the bar shows the
matching segment (Fig. I).
ADJUSTING DOMESTIC HOT WATER TEMPERATURE
CASE A - only heating - adjusting not applicable
- H -
+4/5˚C
+3˚C
+2˚C
+1˚C
0˚C
-1˚C
-2˚C
-3˚C
-4/5˚C
- I -

18
METEO GREEN HE R.S.I.
WORKING THE BOILER
Adjust the ambient thermostat to the required temperature (approx. 20°C).
If there is a demand for heating water, the boiler starts and the symbol
is shown on the display (Fig. K). The boiler will remain working until the set
temperatures are reached, after which it will go on stand-by. In the event of
ignition or operating faults, the boiler will perform a “safety stop”.
The flame symbol will go out and the fault code and will be displayed
(Fig. L). For a description of faults and how to reset them, consult chapter
“Troubleshooting”.
17.2 - SWITCHING OFF
Switching off for short periods
For brief absences press the button to switch off the boiler. The display
will show two segments in the central area (Fig. M). When the boiler remains
powered with the gas tap open, it is protected by the following systems:
- anti-freeze: when the temperature of the water in the boiler falls below
safety values, the circulator and the burner work at minimum power to
increase the water temperature to a safe value (35°C). The symbol
lights up on the display.
- circulator anti-block: one operating cycle is performed every 24 hours.
Switching off for long periods
For prolonged absences press the button to switch off the boiler (Fig. D).
The display will show two segments in the central area. Turn the main switch
to “off”.
Turn off the gas tap under the boiler by turning it clockwise (Fig. N).
In this case, the anti-freeze and anti-block systems are disabled. Empty
the water circuit or suitably protect it with a good make of anti-freeze.
17.3 - BOILER FUNCTIONS
Filling the circuit
If circuit pressure reaches 0.6 bar, the pressure value flashes on the dis-
play (Fig. O); if it falls below a minimum safety value (0.3 bar), fault code
41 appears on the display (Fig. P) for a certain time, following which, if the
fault persists, fault code 40 is displayed (see chapter on “Troubleshooting”).
In the event of faul 40 (Fig. Q) proceed as follow to restore the correct pres-
sure value:
- press button
- open the filling tap external to the boiler, until the pressure shown in the
display is between 1 and 1,5 bar.
If you have to fill the system several times, contact the Technical Service
Centre to check whether the heating circuit is watertight (see if there are
any leaks).
Information
Press , the display turns off and just the word InFO appears (Fig. R). Press
the button to view operating information. Press the button again to move
on to the next piece of information. If the button is not pressed, the system
automatically exits the function.
Info list:
Info 0 - shows the word InFO (Fig. R)
Info 1 - only with the external probe connected, displays external temperature
(e.g. 12°C) (Fig. S). The values shown on the display range between - 30°C
and 35°C. Beyond these values the display shows “- -”
Info 2 - shows circuit pressure (Fig. T)
Info 3 - shows the set heating temperature (Fig. U)
Info 4 - shows the setted temperature (only water tank with sensor, Fig. V)
Info 5 - displays the set heating temperature, in reference to the second
circuit, only if it is connected.
S.A.R.A. function (Fig. W)
If the “winter” mode is selected, the S.A.R.A. function is activated for the
heating circuit. This function allows to reach the required ambient tempera-
ture more quickly.
Depending on the temperature set on the ambient thermostat and the time
taken to reach it, the boiler automatically adjusts the heating water tem-
perature to reduce operating times, thereby increasing operating comfort
and energy saving.
- K -
- L -
- M -
Tap closed
- N -
- J -
D
- P -
- O -

19
METEO GREEN HE R.S.I.
- Q -
- R -
- S -
- T -
- U -
- V -
- W -
17.4 - INF2
It is possible to display information, which may be useful for the Technical
Assistance Centre, by pressing the button for 10 seconds: the code “INF2”
appears on the display.
INF2 list
Step Description Display
2 digits
Display
4 digits
1 Input probe temperature xx 01 °C
2 Return probe temperature xx 02 °C
3
Sanitary probe temperature:
(DO NOT USE)
Water tank with thermostat
(DO NOT USE) -- 03 °C
Water tank with probe (DO
NOT USE) xx 03 °C
4 Not used in this model xx Cond °C
5 Fumes probe temperature xx(**) 05
6Second heating system probe
temperature xx 06 °C
7 Not used in this model xx 07
8 Fan speed /100 xx FAN
9 Not used in this model xx 09
10 Not used in this model xx 10
11 Exchanger cleaning counter
status bH xxxx
12-19 Historic alarm codes xx HIS0-
HIS7
(**): if the display also shows the dot (.), the temperature of the fumes probe
is 100+displayed value.

20
METEO GREEN HE R.S.I.
Fault codes: GAS FAMILY
CODE TYPE MEANING
10 Final End of available attempts: this alarm is generated because the boiler failed the ignition
for the 5 attempts available.
It’s necessary to reset the boiler.
Post pump time 30”, Post purge time for 5”.
Or Condense electrode intervention.
YES NO
11 Temporary False flame: this alarm is generated because the boiler sensed the flame before the
IGNITION PHASE (spark +gas operators). The boiler stops the ignition and goes in
stand-by mode.
If the situation resets, the boiler will work, otherwise appears on the display the fault
code 15.
NO YES
12 Temporary Unsuccessful ignition in the second attempt: this alarm is generated from the 2nd
attempt.
If the ignition is successful the boiler will work at the requested thermal load, otherwise, if
the 5th attempt is failed appears on the display the fault code 10.
Condense electrode intervention.
NO NO
13 Temporary This alarm is generated because there is a problem on the bridge on the wiring harness.
Check the plug J13 between 3&4.
NO YES
14 Final YES NO
15 Final Flame presence without reasons in stand-by: This alarm is generated as the
evolution of error code 11. Check the electrode connections, the ignition transformer, the
wiring harness.
YES YES
Fault codes: SAFETY
CODE TYPE MEANING
20 Final Limit thermostats: this alarm is generated because the boiler sensed the intervention
of one of the two thermostats described in the section “LIMIT THERMOSTATS” of this
presentation.
It’s necessary to reset the boiler.
Post pump time for 30”, Post purge time for 5”.
YES NO
21 Temporary NTC FLUE TEMPERATURE probe disconnected. NO YES
22 Final Wiring harness: this alarm is generated because there is a problem on the bridge on
the wiring harness.

YES NO
23 Temporary NO YES
(continued)
18 - TROUBLESHOOTING
DIAGNOSTIC CODES
In this generation of PCB it’s possible to have more detailed fault signals
compared to the past. This is made to give to the service the chance to know
with an higher level of precision where the problem is, and avoid in this way
loss of time and/or the unnecessary substitution of functioning components.
FAMILY CODE
GAS 1X
SAFETY 2X
AIR 3X
WATER 4X
PCBs 5X
DHW CIRCUIT 6X
CH CIRCUIT 7X
GENERAL/SYSTEM 8X
CONDENSE 9X
FAULT CODES
Fault codes take priority over all display functions in the event of a system
fault occurring.
There are TWO different kind of faults (temporary-final) and THREE kind of
signals are displayed, as you can see here under:
Only KEY : it’s a temporary error, that the boiler attempts to solve auto-
matically (in the meanwhile it will go on working).
If the correct functioning is not reached, we can have two different situations:
(A) the KEY disappears, appears RESET with a different fault code;
or (B) KEY + , different fault code.
A RESET DURING THIS PHASE WILL HAVE NO EFFECT.
(A) Only RESET : it’s necessary to reset the boiler with the RESET button.
The fault is due to a random situation. If the alarm is repeated in the time, is
strongly suggested to call the After Sales Service.
(B) KEY + RESET : it’s necessary to call the After Sales Service.
If alarm 12 code is temporarily displayed at ignition (with flame burn-
ing) this does not indicate a fault. Check the relevant table if the alarm
persists.