RinNOVA

RinNOVA
RinNOVA
User manual
and installation
instructions
WARNING
Congratulations on your selection.
Your modulating boiler is electronically adjusted and ignited.
• highly efficient
• sealed chamber
• with steel domestic hot water heat exchanger.
The materials used and the regulation system offer you safety, high levels of comfort and energy
savings so you can appreciate the maximum advantages of autonomous central heating.
DANGER: Information marked with this symbol must be observed to prevent mechanical or generic accidents (e.g. injuries or bruises.
DANGER: Information marked with this symbol must be observed to avoid electrical accidents (electrocution).
DANGER: Information marked with this symbol must be observed to avoid the danger of fire or explosions.
DANGER: Information marked with this symbol must be observed to avoid heatrelated accidents (burns).
ATTENTION: Information marked with this symbol must be observed to avoid malfunctions and/or material damage to the unit or other items.
ATTENTION: Information marked with this symbol is important information that
must be read carefully.
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The manual must be read carefully in order to use the boiler in a rational and safe manner. It
must be stored with care as it may be necessary to consult it in the future. If the unit is transferred to another owner, the manual must accompany the boiler.
The first ignition must be carried out by one of the Authorised Service Centres, which validates the warranty from the date on which it is performed.
The manufacturer declines all liability for translations of this manual from which incorrect interpretations may result. It cannot be considered responsible for failure to observe the instructions contained in this manual or the results of performing manoeuvres that have not been
specifically described.
DURING INSTALLATION
Installation must be carried out by qualified personnel who shall be responsible for compliance with all applicable national and local laws and standards.
The boiler is used to heat water to a temperature that is lower than the boiling point and must
be connected to a central heating system and/or a domestic hot water distribution network
that is compatible with its performance and its power.
The boiler must be supplied with Methane gas (G20) or LPG (BUTANE G30 - PROPANE G31).
The boiler must only be used for the purpose for which it was designed, furthermore:
• It must not be exposed to atmospheric agents.
• This unit is not meant for use by people with reduced psychic or motor skills or who lack in
experience and knowledge (including children), unless there they are supervised by a person
who is responsible for their safety and they have been properly instructed in using the unit.
• Children must be supervised to make sure they do not play with the unit.
• Prevent incorrect use of the boiler.
• Avoid manoeuvres on the sealed devices.
• Avoid contact with hot parts during operation.
-3-
WARNING
IMPORTANT
WARNING
DURING USE
It is prohibited and dangerous to obstruct, even partially, the air intakes for the ventilation of
the room where the boiler is installed (UNI 7129/08).
Repairs must only be carried out by Authorised Service Centres using original spare parts.
Therefore, in the case of a problem, deactivate the boiler only (see instructions).
If you smell gas:
• do not turn on electric switches, the telephone or any other object that could create sparks.
• immediately open up the doors and windows to create an air current that cleans the room.
• close the gas cocks.
• request the intervention of professionally qualified personnel.
Before starting the boiler, it is recommended to have professionally qualified personnel
check that the gas supply system :
• is perfectly sealed.
• is dimensioned for the flow rate necessary to the boiler.
• is equipped with the safety and control devices required by current standards;
• make sure that the installer has connected the safety valve discharge to a discharge funnel.
The manufacturer is not responsible for damage caused by the water released when the safety valve opens if it is not correctly connected to a drain.
Do not touch the unit with wet or moist body parts and/or with bare feet.
If performing structural work or maintenance near the flue gas duct and/or the flue gas
exhaust devices or their accessories, turn off the unit and, when the work is completed, have its
efficiency checked by professionally qualified personnel.
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TABLE OF CONTENTS
1 Boiler description . . . . . . . . . . . . . . . . . . . . . . 6
1.1
1.2
1.3
1.4
Assembly view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Shut-off valve and cocks . . . . . . . . . . . . . . . . . . . . . . . . 6
Control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
General LCD characteristics . . . . . . . . . . . . . . . . . . . . . 8
2 User instructions . . . . . . . . . . . . . . . . . . . . 10
2.1Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.2Ignition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.3 Heating circuit temperature . . . . . . . . . . . . . . . . . . 11
2.4 Domestic hot water temperature . . . . . . . . . . . . . 12
2.5 3 star preheating function . . . . . . . . . . . . . . . . . . . . 12
2.6Extinguishing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3 USEFUL TIPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.1 Filling the heating circuit . . . . . . . . . . . . . . . . . . . . . 14
3.2Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.3 Antifreeze protection . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.4 Periodic maintenance . . . . . . . . . . . . . . . . . . . . . . . . 15
3.5 External cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.6 Operating anomalies . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.7 Displays in INFO mode . . . . . . . . . . . . . . . . . . . . . . . . 16
3.8 Remote anomaly code . . . . . . . . . . . . . . . . . . . . . . . . 17
4 TECHNICAL SPECIFICATIONS . . . . . . . . . . . . . 18
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
Assembly view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Wiring diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Technical data M290.24CM/M . . . . . . . . . . . . . . . . . 22
Technical data M290.28CM/M . . . . . . . . . . . . . . . . . 25
Technical data M290.32CM/M . . . . . . . . . . . . . . . . . 28
Hydraulic characteristic . . . . . . . . . . . . . . . . . . . . . . . 31
Expansion tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
5INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
5.1Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
5.2 Precautions for installation . . . . . . . . . . . . . . . . . . . . 32
5.3 Installing the boiler support . . . . . . . . . . . . . . . . . . 33
5.4Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
5.5Fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
5.6 Boiler assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
5.7 Flue gas discharge dimensions and lengths . . . 35
5.8 Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . 41
5.9 Connecting an ambient thermostat or zone
valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
5.10 Installing the external temperature probe . . . . . 43
5.11 Electric connection between the boiler and
the external probe . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
5.12 Electrical connection of the remote control
(optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
5.13 Remote enabling of operation with the
external probe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
5.14 Setting the K coefficient of the external probe . 45
5.15 Setting pump post-circulation . . . . . . . . . . . . . . . . 46
5.16 Selecting reignition frequency . . . . . . . . . . . . . . . . 48
5.17 Examples of hydraulic plants with hydraulic
separator (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . 50
6 Preparation for service . . . . . . . . . . . . . . 51
6.1Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
6.2 Sequence of the operations . . . . . . . . . . . . . . . . . . . 51
7CHECKING THE GAS REGULATION . . . . . . . . 53
7.1Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
7.2 Operations and gas setting . . . . . . . . . . . . . . . . . . . 53
8 GAS CONVERSION . . . . . . . . . . . . . . . . . . . . . . . 57
8.1Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
8.2Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
9Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . 59
9.1Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
9.2 Removing the body panels . . . . . . . . . . . . . . . . . . . 59
9.3 Emptying the d.h.w. circuit . . . . . . . . . . . . . . . . . . . . 60
9.4 Emptying the central heating circuit . . . . . . . . . . 60
9.5 Cleaning the primary exchanger . . . . . . . . . . . . . . 60
9.6 Checking the pressure of the expansion tank . . 60
9.7 Cleaning the domestic hot water exchanger . . . 60
9.8 Cleaning the burner . . . . . . . . . . . . . . . . . . . . . . . . . . 60
9.9 Controlling the flue gas expulsion duct . . . . . . . . 60
9.10 Checking boiler efficiency . . . . . . . . . . . . . . . . . . . . 61
9.11 Setting the boiler chimney sweep function . . . . 62
9.12 Settings for changing the control card . . . . . . . . 63
Model
Boiler certification code
RinNOVA 24S
M290.24CM/...
RinNOVA 28S
M290.28CM/...
RinNOVA 32S
M290.32CM/...
Unit in category: II2H3+ (gas G20 20 mbar, G30 29 mbar, G31 37 mbar)
Country of destination: EN
This unit is compliant with the following European Directives:
Gas Directive Gas 2009/142/EC
Efficiency Directive 92/42/EEC
Electromagnetic Compatibility Directive 2004/108/EC
Low Voltage Directive 2006/95/EC
In order to constantly improve its products, the manufacturer reserves the right to change the data provided
in this documentation at any time and without notice.
This documentation is provided for information purposes and cannot be considered as a contract with third
parties.
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BOILER DESCRIPTION
1
Boiler description
1.2 Shut-off valve and cocks
1.1 Assembly view
The boiler model and serial number are printed in the warranty certificate.
9
2
USE
8
3
4
5
6
Figure 1.2
Figure 1.1
1 Control panel
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1
2
3
4
5
6
7
8
9
Gas supply label
Central heating flow pipe
Domestic hot water outlet pipe
Gas cock
Domestic cold water inlet pipe
Central heating return pipe
Central heating circuit filling cock
Central heating circuit drain cock
7
BOILER DESCRIPTION
1.3 Control panel
15
14
11
13
USE
10
12
Figure 1.3
10 Domestic hot water temperature increase
key
11 Domestic hot water temperature reduce
key
12 Reset/Stand-by/winter/Summer key
13 Domestic hot water temperature reduce
key
14 Central heating temperature increase key
15 LCD display
The RESET that restores all parameters to the factory settings occurs
only by setting "parameter 08=04".
When the reset is complete, this is
displayed by all the symbols on
the display turning on.
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BOILER DESCRIPTION
Constantly illuminated: flame
present
Flashing: drain upon ignition in
progress
Constantly illuminated: maintenance due pre-warning
Flashing: maintenance required
or maintenance due
Constantly illuminated: lockout
error. The boiler can be restarted
by the user by pressing the reset
button
Constantly illuminated: remote
control connected
Flashing: request from remote
control in process
1.4 General LCD characteristics
USE
For the technical specifications of the boiler
consult the section "TECHNICAL SPECIFICATIONS" on page 18.
Figure 1.4
KEY
LCD SIGNALS
All symbols represented with
lines around it indicate that the
symbol is flashing
Constantly illuminated: d.h.w.
function enabled
Flashing: d.h.w function in process
Constantly illuminated: solar
control unit connected
Flashing: solar pump operating
Illuminated fixed: central heating function enabled (winter)
Flashing: central heating function in progress
Constantly illuminated: 3 star
preheating function active
Flashing: 3 star preheating function in process
Illuminated fixed: for 15s only after system loading
Flashing: in the case of low system pressure or if viewing the
pressure from the "INFO" menu
-8-
LCD
E02 +
FUNCTION
Safety lockout due to
failed ignition
Lockout due to safety
thermostat operation
E03 +
Generic lockout
E01 +
E04 +
E05 +
E06 +
Pump circulation failure
or insufficient system
pressure
Flue gas pressure switch
anomaly
Central heating NTC
probe failure
E07 +
D.h.w. NTC probe failure
E08 +
External NTC probe failure
E11 +
Parasite flame presence
E14 +
Temperature gradient circulation failure (>2K/s)
E20 +
EVG lockout
BOILER DESCRIPTION
FUNCTION
E21 +
EVG lockout
E22 +
EVG lockout
E23 +
EVG lockout
E24 +
Abnormal combustion ignition lockout
Abnormal combustion
operation lockout
E25 +
E69 +
Wiring error lockout
L 01
Primary NTC limitation in
d.h.w. mode
Boiler Stand-By, hyphens
are turned on in sequence to simulate running (antifreeze protection activated)
In the case of low pressure, the value is automatically displayed with
the symbol flashing.
When
pressure
is
achieved the symbol remains on for 15s and then
disappears.
The current pressure
without a decimal point
can be displayed from the
"INFO" menu.
Pump active for the postcirculation phase (flashing Po + flashing temperature)
LCD
FUNCTION
Boiler with central heating power demand.
Central heating set
(all other symbols are
disabled)
D.h.w. set
(all other symbols are
disabled)
Delay burner ignition due
to system setting (flashing uu + flashing temperature)
Boiler in chimney sweep
function.
The activation of the
chimney sweep occurs
configuring the "parameter P09=01" and the following is visualized:
LP = minimum dhw
hP = minimum output in
heating mode
cP = maximum output in
heating mode
dP = maximum output in
domestic hot water mode
The transition occurs with
keys 14 (increase) and 13
(decrease) dhw temperature.
Boiler in antifreeze phase
(flashing bP + flashing
temperature)
Boiler with d.h.w. power
demand
The d.h.w. temperature is
displayed.
-9-
USE
LCD
USER INSTRUCTIONS
2
User instructions
Stand-by
Hyphens are turned
on in sequence to
simulate running
2.1 Warnings
USE
Check that the heating circuit is regularly filled with water even if the
boiler should only be used for producing domestic hot water.
Otherwise, proceed with its filling, see section
"Filling the heating circuit" on page 14.
All boilers have an "antifreeze" system that is activated if its temperature decreases below 5°C;
therefore do not turn off the boiler.
If the boiler is not used during cold periods,
with the resulting risk of freezing, proceed as
described in section "Antifreeze protection" on
page 14.
Winter
Summer
Figure 2.2
2.2 Ignition
• The boiler cocks and those provided during installation must be open (Figure 2.1).
Heating/d.h.w. operation
• Press key 12 for 2 seconds until both symbols
and
appear on the display (Figure
2.3).
15
10
14
11
13
Open position
12
Figure 2.1
Figure 2.3
• Electrically power the boiler by turning on the
installed bipolar switch. The LCD display shows
the boiler status (last stored) (Figure 2.2).
• The LCD display shows the boiler temperature
(primary circuit) and the symbols
and
(Figure 2.4).
- 10 -
USER INSTRUCTIONS
pressed makes it possible to modify it.
Data shown on the LCD display:
• The "set" value of the heating delivery temperature of the hot water and the symbol
will flash. The background of the display will be
illuminated (Figure 2.7).
Figure 2.4
Operation with only production of hot water
• Press key 12 for 2 seconds until the symbol
appears on the display (Figure 2.5).
14
10
11
13
12
Figure 2.5
• The LCD display shows the boiler temperature
(primary circuit) and the symbol
(Figure
2.6).
Figure 2.7
Adjustment of the heating temperature based
on the external temperature (without external probe)
Adjust the temperature of the heating delivery
hot water as follows:
• between 38 and 50 with an external temperature between 5 and 15°C
• between 50 and 73 with an external temperature between -5 and +5°C
• between 73 and 85 with an external temperature below -5°C.
Your qualified installer may suggest more suitable adjustments for your system.
It is possible to verify that the set temperature
has been reached when the symbol
is not visible on the LCD display.
Figure 2.6
2.3 Heating circuit temperature
The heating delivery temperature of the hot
water can be adjusted using keys 13 (decrease)
and 14 (increase) (Figure 2.5) between a minimum of approx. 38°C and a maximum of approx.
85°C. The first time one of those keys is pressed,
the "set" value is displayed. The second time it is
Heating power demand
When the boiler has a heating power demand,
the display will show the symbol
followed
by an increase in the temperature of the heating
delivery water temperature. The symbol
will
flash (Figure 2.8).
- 11 -
USE
15
USER INSTRUCTIONS
USE
Figure 2.8
Adjusting the heating temperature with an installed external probe
When the optional external probe is installed,
your boiler will automatically adjust the temperature of the heating system's delivery water temperature in relation to the external temperature.
In this case, the boiler must be set by a qualified
installer (section "Setting the K coefficient of the
external probe" on page 45).
If the ambient temperature is not comfortable,
you can increase or decrease the heating system
delivery temperature by ± 15°C with the keys 13
(decrease) and 14 (increase) (Figure 2.5).
Regulation
Adjust the temperature of the domestic hot water to a value that suits your needs.
Limit the need to mix hot water with cold water.
In this way you will appreciate the characteristics
of automatic regulation.
If the water is particularly hard, we recommend
regulating the boiler temperature to below 50°C.
In these cases, we recommend installing a water
softener in the d.h.w. system.
If the maximum flow rate of the domestic hot
water is too high so that a sufficient temperature
cannot be reached, request an Authorised Support Technician to install a flow rate limiter.
Domestic hot water demand
When the boiler has a domestic hot water demand, the display will show the symbol
followed by an increase in the temperature of the
domestic hot water. The symbol
will flash
(Figure 2.10).
2.4 Domestic hot water temperature
The domestic hot water temperature can be adjusted using keys 10 (decrease) and 11 (increase)
(Figure 2.5) between a minimum of approx. 35°C
and a maximum of approx. 60°C. The first time
one of those keys is pressed, the "set" value is
displayed. The second time it is pressed makes it
possible to modify it.
Data shown on the LCD display:
• The "set" value of the domestic hot water the
symbol
will flash. The background of the
display will be illuminated (Figure 2.7).
Figure 2.9
- 12 -
Figure 2.10
2.5 3 star preheating function
This function reduces consumption of the domestic water supply at the time of withdrawal,
preparing the boiler temperature at the requested temperature.
To activate the 3 star preheating function press
keys 10 and 11 together (Figure 2.12) until the
symbol
appears on the LCD display (Figure
2.11).
When the symbol
flashes, the function is in
process.
USER INSTRUCTIONS
• Disconnect the boiler from the electric power
supply;
• Close the boiler cocks (Figure 2.14);
Figure 2.11
USE
NOTE: Should the power to the boiler fail, wait at
least one minute before reactivating the function
upon reactivation.
To disable the 3 star preheating function press
keys 10 and 11 (Figure 2.12) until the symbol
disappears from the LCD display .
Closed position
2.6 Extinguishing
Press key 12 (Figure 2.12) for 2 seconds until the
symbol
appears on the display (the
dashes appear in sequence to simulate flowing)
(Figure 2.13).
15
10
14
11
13
Figure 2.14
• If necessary, empty the hydraulic circuits, see
section "Emptying the d.h.w. circuit" on page
60 and section "Emptying the central heating circuit" on page 60.
12
Figure 2.12
Figure 2.13
If the boiler will be inactive for a long period of
time:
- 13 -
USEFUL TIPS
3
USEFUL TIPS
3.2 Heating
3.1 Filling the heating circuit
Central heating circuit
filling cock
CLOSED
USE
OPEN
For rational and economic service, have an ambient thermostat installed.
Never turn off the radiator in the room where
the ambient thermostat is installed.
If a radiator (or convector) does not heat, check
if there is air in the system and that its cock is
open.
If the ambient temperature is too high, do not
adjust the radiator cocks but decrease the heating temperature regulation using the ambient
thermostat or the heating regulation keys 13
and 14 (Figure 3.3).
15
Figure 3.1
Press keys 12 and 14 together to access the
"INFO" (information) menu. The index value
"J00" will be shown on the display in alternation with the pressure value "b13" (1.3 bar). The
number indicating the pressure is displayed
without a decimal point, and the letter indicates the unit of measure (bar) (Figure 3.2).
10
14
11
13
12
Figure 3.3
3.3 Antifreeze protection
Figure 3.2
Open the filling cock in Figure 3.1 located under the boiler also check the heating circuit
pressure on the display. The pressure must be
between 1 bar and 1.5 bar (e.g. 1.3 bar in Figure
3.2).
When the operation is complete, reclose the
filling cock and bleed any air from the radiators.
- 14 -
The antifreeze system, and any additional protections, protect the boiler from possible damage due to freezing.
This system does not guarantee protection for
the entire hydraulic system.
If the external temperature could reach values
below 0°C it is recommended to leave the entire system on, setting the ambient thermostat
to a low temperature.
The antifreeze function is also active when the
boiler is in stand-by (the dashes are turned on
in sequence to simulate flowing) (Figure 3.4).
USEFUL TIPS
Figure 3.4
Figure 3.5
3.4 Periodic maintenance
For efficient and regular boiler operation, it is
recommended to have it serviced and cleaned
at least once a year by technician from an Authorised Service Centre.
During this check, the most important boiler
components will be inspected and cleaned.
This check may be performed within the scope
of a maintenance contract.
To restore operation, press the reset key 12
(Figure 3.3) on the boiler control panel.
Frequent safety lockouts should be
reported to the Authorised Service
Centre.
Other possible anomalies shown on the LCD
display
If the LCD display shows a code that is preceded by the letter E and the symbol
the boiler
has an anomaly that cannot be reset.
The background of the display will flash (Figure
3.6).
3.5 External cleaning
Before performing any cleaning
operation, disconnect the boiler
from the electric mains supply.
To clean, use a cloth soaked in soap and water.
Do not use: Solvents, flammable substances,
abrasive substances.
3.6 Operating anomalies
If the boiler is not operating and a code appears on the LCD display that is preceded by
the letter "E" and the message RESET (section
"General LCD characteristics" on page 8)
the boiler is in lockout. The background of the
display will flash (Figure 3.5).
Figure 3.6
Another possible signal occurs when the d.h.w.
exchanger is not able to exchange all the power delivered by the boiler.
E.g. D.h.w. exchanger blocked by limescale.
This occurs only when the boiler has a demand
for domestic hot water.
Code 01 preceded by the letter L will appear on
the LCD display. The background of the display
will flash (Figure 3.7).
- 15 -
USE
If the boiler is turned off, have a qualified technician empty the boiler (heating and d.h.w.
circuit) and empty the heating system and the
d.h.w. system.
USEFUL TIPS
Authorised Service Centre.
3.7 Displays in INFO mode
Figure 3.7
USE
To reset proper boiler operation
contact a technician at the Authorised Service Centre
Air bubble noises
Check the pressure of the heating circuit and
fill it if necessary, see section "Filling the heating circuit" on page 14.
Low system pressure
Add more water to the heating system.
For the operation, refer to section "Filling the
heating circuit" on page 14.
The user is responsible for periodically checking the pressure of the heating system.
If water must be added too often, have the
technical support centre check if there are
leaks in the heating system or the boiler itself.
The INFO mode makes it possible to view boiler
operation status information. In the case of a
boiler malfunction, it is recommended to provide this information to the Service Centre to
understand the causes.
To access the INFO mode, press keys 12 and
14 together (Figure 3.8) until the index "J00"
is shown on the display in alteration with the
parameter value (Figure 3.9).
15
10
14
11
13
12
Figure 3.8
Water leaks from the safety valve
Check if the filling cock is well closed (section
"Filling the heating circuit" on page 14).
Check from the "INFO" (information) menu that
the heating circuit pressure is not close to 3 bar.
In this case it is recommended to drain a part
of the water from the system through the air
relief valves in the radiators in order to reduce
the pressure to a regular value.
In the case of malfunctions other
than those described above, shut
down the boiler as described in section "Extinguishing" on page 13
and contact the technician from the
- 16 -
Figure 3.9
To scroll the values press the keys 13 (decrease)
and 14 (increase). Briefly press the key 12 to exit
USEFUL TIPS
The table summarises the possible values visible in INFO mode.
Value visualised
Primary circuit pressure
External temperature
K curve value configured in
loco
Offset climatic curve value
Calculated heating set point
(with climatic curve or set
configured)
Delivery NTC pressure
Temperature NTC return
Domestic set
Temp. Dhw inlet (if foreseen)
Temp. Dhw output
Dhw capacity
Flue gas temperature (if foreseen)
Fan speed (if foreseen)
Pressure transducer pressure
(if foreseen)
Ionization value
Number of months to maintenance
3 star status
(ON=01, OFF=00)
HWCH Hardware code high
HWCL Hardware code low
SWCH Software code high
SWCL Software code low
Index
J00 + value
J01 + value
J02 + value
J03 + value
J04 + value
J05 + value
J06 + value
J07 + value
J08 + value
J09 + value
J10 + value
code followed by the letter E.
The table summarises the possible codes that
can be displayed on the remote.
Anomaly
Ignition failed lockout
Safety thermostat trip lockout
Generic lockout
No water in the heating or circulation circuit
Flue gas pressure switch anomaly
Heating NTC probe anomaly
D.h.w. NTC probe anomaly
External NTC probe anomaly
Parasite flame
No circulation or pump failure or
activation due to primary temperature limit
Code
01E
02E
03E
04E
05E
06E
07E
08E
11E
14E
J11 + value
J12 + value
J13 + value
J14 + value
J15 + value
J16 + value
J17 + value
J18 + value
J19 + value
J20 + value
3.8 Remote anomaly code
If the optional remote is connected to the boiler, a code can be shown on the central part of
the display that indicates a boiler anomaly.
The current anomaly is indicated by a numeric
- 17 -
USE
INFO mode (Figure 3.8). Exit will occur automatically after 30 seconds if no key is pressed.
TECHNICAL SPECIFICATIONS
4
TECHNICAL SPECIFICATIONS
4.1 Assembly view
17
18
19
16
20
39
33
38
INSTALLATION
37
36
32
24
27
35
23
22
Figure 4.1
- 18 -
29
26
25
TECHNICAL SPECIFICATIONS
4.2 Schematic diagram
19
18
21
16
33
20
39
40
37
27
26
42
30
29
44
32
34
31
28
24
22
23
5
Figure 4.2
3 Heating flow pipe
4 Domestic hot water outlet pipe
5 Gas cock
6 Domestic cold water inlet pipe
7 Heating return pipe
8 Heating circuit filling cock
16 Flue gas pressure switch
43
35
41
INSTALLATION
36
8
7
3
6
4
17 Venturi vacuum check points
18 Flue gas exhaust duct
19 Air suction duct
20 Fan
21 Venturi
22 D.h.w. NTC probe
23 Primary circuit emptying cock
- 19 -
INSTALLATION
TECHNICAL SPECIFICATIONS
24 3 bar safety valve
25 Pump bleed cap
26 Pump
27 Automatic bleed valve
28 D.h.w. flowmeter
29 Modulating gas valve
30 Gas valve outlet tapping point
31 Gas valve outlet tapping point
32 Heating pressure transducer
33 Heating NTC /maximum heating temperature probe
34 Three-way valve
35 Three-way valve plug
36 Flame detection electrode / ignition
electrode
37 Burner
38 Combustion chamber
39 Primary exchanger
40 D.h.w. exchanger
41 Expansion tank
42 Integrated by-pass
43 Domestic hot water filter
44 D.h.w. flow rate limiter (optional)
* To access the plate, remove the front panel from
the body as described in the Maintenance chapter
- 20 -
TECHNICAL SPECIFICATIONS
4.3 Wiring diagram
1
Electric power supply cable
6
D.h.w. NTC
11
Boiler thermostat - boiler probe
2
Pump
7
D.h.w. flowmeter
12
External probe terminal board
3
Three-way valve
8
Heating transducer
13
Remote terminal board - Ambient thermostat
4
Fan
9
Heating NTC - Max temperature
NTC Max
14
Ignition/detection electrode
5
Gas valve
10
Flue gas pressure switch
15
Electric power supply terminal
board
n m
c
3
n
X14
1--L
c
g/v
n
n
m
c
m
9
c
b
r
n
b
n
b
X5
t
n
4
c
r
n
r
1
12
r r
b
c
X7
r
b
n
n
1
t
3
n
c
b
c
COM
b
b
b
7 X10
15
NO
c
4
c
10
2
1
r
c
1
F1= 3.15AF
m
X3
r
b
n
c
3
4
g/v c
m
r
r
OUT
1
1
2
M
~
9
5V
2
8
GND
n
t
M
~
g/v n
m
7
OUT
L
g/v
6
5
5V
c
4
GND
N
3
1
X15
g/v
X4
X9
3
1
INSTALLATION
2
1
5
1
3
1
11
6
12
X11
X13
X8
X6
13
1
b
b
b
14
a
orange
g
yellow
n
black
b
white
gr
grey
r
red
c
blue
m
brown
v
purple
g/v
yellow/green
Figure 4.3
- 21 -
TECHNICAL SPECIFICATIONS
4.4 Technical data M290.24CM/M
(nom.Q.) Nominal heating/d.h.w.
heat input (Hi)
kW
(nom.Q.) Minimum heat input (Hi)
for heating
kW
kcal/h
kcal/h
(nom.Q.) Minimum d.h.w. heat input kW
(Hi)
kcal/h
Maximum output power for
heating/d.h.w.
Minimum output power for heating
Minimum output power for d.h.w.
kW
kcal/h
kW
kcal/h
kW
kcal/h
25,5
21926
14,5
12468
11,0
9458
23,7
20378
12,9
11092
Heating
Adjustable temperature **
°C
38 - 85
Max. operating temp.
°C
90
kPa
300
bar
3,0
Maximum pressure
Minimum pressure
Available pressure difference (at
1000 l/h)
8426
INSTALLATION
Measured efficiency
Nominal efficiency 60°/80°C
%
92,8
Min. efficiency 60°/80°C
%
89,2
Efficiency at 30 % of load
%
90,7
Energy efficiency
***
Heat loss at the chimney with burner
Pf (%)
operating
6,3
Heat loss at the chimney with burner Pfbs
off ΔT 50°C
(%)
0,2
Heat loss towards the environment
through the casing with the burner
operating
0,9
Weighted NOx
kPa
20,4
bar
0,204
°C
35 - 60
Domestic hot water
2
mg/kWh
168
ppm
95
kPa
1000
bar
10
kPa
30
bar
0,3
(ΔT=25 K)
l/min
15,2
(ΔT=35 K)
l/min
10,6
Minimum flow rate
l/min
2,5
Specific d.h.w. flow rate (ΔT=30 K) * l/min
11,2
Minimum pressure
Maximum flow rate
* Reference standard EN 625
Gas supply pressures
Gas
Methane G20
Butane G30
Propane G31
- 22 -
0,3
** At minimum useful power
Maximum pressure
NOx class
30
bar
9,8
Temp. Minimum-Maximum
Pd (%)
kPa
Pa
mbar
Nom.
2000
20
Min.
1700
17
Max.
2500
25
Nom.
2900
29
Min.
2000
20
Max.
3500
35
Nom.
3700
37
Min.
2500
25
Max.
4500
45
TECHNICAL SPECIFICATIONS
Ignition pressure
Voltage
V~
230
Frequency
Hz
50
Output at nominal heat input
W
107
Output at minimum heat input
W
106
Output in stand-by
W
3
Degree of protection
IPX5D
Heating/d.h.w. maximum gas flow rate
Methane G20
3
m /h
2,70
Butane G30
kg/h
2,01
Propane G31
kg/h
1,98
Minimum gas flow rate in heating mode
Methane G20
Butane G30
Propane G31
Pa
mbar
Pa
900
9,0
1970
mbar
19,7
Pa
2520
mbar
25,2
Nozzles
N°
Ø mm
/100
Methane G20
11
130
Butane G30
11
78
Propane G31
11
78
123
Methane G20
m3/h
1,53
Butane G30
kg/h
1,14
Chimney design #
Propane G31
kg/h
1,13
Max. flue gas temperature
°C
Min. flue gas temperature
°C
kg/s
0,0154
Minimum gas flow rate in d.h.w. mode
110
Methane G20
3
m /h
1,16
Max. flue gas mass flow rate
Butane G30
kg/h
0,87
Min. flue gas mass flow rate
kg/s
0,0172
Propane G31
kg/h
0,85
Max. air mass flow rate
kg/s
0,0149
Min. air mass flow rate
kg/s
0,0169
Max. gas pressure at the burner in heating mode
Methane G20
Butane G30
Propane G31
Pa
1280
mbar
12,8
Flue gas discharges
Pa
2820
Boiler type
mbar
28,2
B22 C12 C32 C42 C52 C62 C82
Pa
3600
Coaxial air/flue gas duct Ø
mm
mbar
36,0
Twin pipe air/flue gas duct Ø
mm
80/80
Coaxial air/flue gas duct to roof Ø
mm
80/125
Min. gas pressure at the burner in heating mode
Methane G20
Butane G30
Propane G31
# Values refer to tests with 80 mm 1 + 1 twin pipe
discharge and Methane gas G20
Pa
60/100
400
mbar
4,0
Pa
980
mbar
9,8
Pa
1230
mbar
12,3
- 23 -
INSTALLATION
Electrical data
TECHNICAL SPECIFICATIONS
Other characteristics
Height
mm
703
Width
mm
400
Depth
mm
325
Weight
kg
32,9
Max. ambient temperature
°C
60
Min. ambient temperature
°C
-15
G20 Hi. 34.02 MJ/m3 (15°C, 1013.25 mbar)
G30 Hi. 45.65 MJ/kg (15°C, 1013.25 mbar)
G31 Hi. 46.34 MJ/kg (15°C, 1013.25 mbar)
INSTALLATION
1 mbar corresponds to approx. 10 mm H20
- 24 -
TECHNICAL SPECIFICATIONS
4.5 Technical data M290.28CM/M
kW
(nom.Q.) Minimum heat input (Hi)
for heating
kW
kcal/h
kcal/h
(nom.Q.) Minimum d.h.w. heat input kW
(Hi)
kcal/h
Maximum output power for
heating/d.h.w.
Minimum output power for heating
Minimum output power for d.h.w.
kW
kcal/h
kW
kcal/h
kW
kcal/h
31,1
26741
16,5
14187
13,0
11178
29,1
25021
14,9
12812
Heating
Adjustable temperature **
°C
38 - 85
Max. operating temp.
°C
90
kPa
300
bar
3,0
Maximum pressure
Minimum pressure
Available pressure difference (at
1000 l/h)
10146
Measured efficiency
Nominal efficiency 60°/80°C
%
93,3
Min. efficiency 60°/80°C
%
90,6
Efficiency at 30 % of load
%
92,2
Energy efficiency
***
Heat loss at the chimney with burner
Pf (%)
operating
5,2
Heat loss at the chimney with burner Pfbs
off ΔT 50°C
(%)
0,2
Heat loss towards the environment
through the casing with the burner
operating
1,5
Weighted NOx
0,3
kPa
21,0
bar
0,210
°C
35 - 60
** At minimum useful power
Domestic hot water
Maximum pressure
NOx class
30
bar
11,8
Temp. Minimum-Maximum
Pd (%)
kPa
2
mg/kWh
179
ppm
101
kPa
1000
bar
10
kPa
30
bar
0,3
(ΔT=25 K)
l/min
18,1
(ΔT=35 K)
l/min
12,7
Minimum flow rate
l/min
2,5
Specific d.h.w. flow rate (ΔT=30 K) * l/min
13,6
Minimum pressure
Maximum flow rate
* Reference standard EN 625
Gas supply pressures
Gas
Methane G20
Butane G30
Propane G31
Pa
mbar
Nom.
2000
20
Min.
1700
17
Max.
2500
25
Nom.
2900
29
Min.
2000
20
Max.
3500
35
Nom.
3700
37
Min.
2500
25
Max.
4500
45
- 25 -
INSTALLATION
(nom.Q.) Nominal heating/d.h.w.
heat input (Hi)
TECHNICAL SPECIFICATIONS
Electrical data
Ignition pressure
Voltage
V~
230
Frequency
Hz
50
Output at nominal heat input
W
116
Output at minimum heat input
W
115
Output in stand-by
W
3
Degree of protection
IPX5D
Heating/d.h.w. maximum gas flow rate
Methane G20
3
m /h
3,29
Butane G30
kg/h
2,45
Propane G31
kg/h
2,42
Minimum gas flow rate in heating mode
Butane G30
Propane G31
Pa
mbar
Pa
830
8,3
1950
mbar
19,5
Pa
2490
mbar
24,9
Nozzles
N°
Ø mm
/100
Methane G20
14
130
Butane G30
14
77
Propane G31
14
77
Methane G20
m3/h
1,75
Butane G30
kg/h
1,30
Chimney design #
Propane G31
kg/h
1,28
Max. flue gas temperature
°C
111
Min. flue gas temperature
°C
100
1,38
Max. flue gas mass flow rate
kg/s
0,0171
kg/s
0,0180
Minimum gas flow rate in d.h.w. mode
INSTALLATION
Methane G20
Methane G20
m3/h
Butane G30
kg/h
1,03
Min. flue gas mass flow rate
Propane G31
kg/h
1,01
Max. air mass flow rate
kg/s
0,0165
Min. air mass flow rate
kg/s
0,0177
Max. gas pressure at the burner in heating mode
Methane G20
Butane G30
Propane G31
Pa
1180
mbar
11,8
Flue gas discharges
Pa
2790
Boiler type
mbar
27,9
B22 C12 C32 C42 C52 C62 C82
Pa
3550
Coaxial air/flue gas duct Ø
mm
mbar
35,5
Twin pipe air/flue gas duct Ø
mm
80/80
Coaxial air/flue gas duct to roof Ø
mm
80/125
Min. gas pressure at the burner in heating mode
Methane G20
Butane G30
Propane G31
- 26 -
# Values refer to tests with 80 mm 1 + 1 twin pipe
discharge and Methane gas G20
Pa
320
mbar
3,2
Pa
820
mbar
8,2
Pa
1050
mbar
10,5
60/100
TECHNICAL SPECIFICATIONS
Other characteristics
Height
mm
703
Width
mm
400
Depth
mm
325
Weight
kg
33,6
Max. ambient temperature
°C
60
Min. ambient temperature
°C
-15
G20 Hi. 34.02 MJ/m3 (15°C, 1013.25 mbar)
G30 Hi. 45.65 MJ/kg (15°C, 1013.25 mbar)
G31 Hi. 46.34 MJ/kg (15°C, 1013.25 mbar)
INSTALLATION
1 mbar corresponds to approx. 10 mm H20
- 27 -
TECHNICAL SPECIFICATIONS
4.6 Technical data M290.32CM/M
(nom.Q.) Nominal heating/d.h.w.
heat input (Hi)
kW
(nom.Q.) Minimum heat input (Hi)
for heating
kW
kcal/h
kcal/h
(nom.Q.) Minimum d.h.w. heat input kW
(Hi)
kcal/h
Maximum output power for
heating/d.h.w.
Minimum output power for heating
Minimum output power for d.h.w.
kW
kcal/h
kW
kcal/h
kW
kcal/h
33,9
29149
20,0
17197
15,5
13328
30,6
26311
18,0
15477
Heating
Adjustable temperature **
°C
38 - 85
Max. operating temp.
°C
90
kPa
300
bar
3,0
Maximum pressure
Minimum pressure
Available pressure difference (at
1000 l/h)
12038
INSTALLATION
Measured efficiency
Nominal efficiency 60°/80°C
%
93,1
Min. efficiency 60°/80°C
%
90,2
Efficiency at 30 % of load
%
90,9
Energy efficiency
***
Heat loss at the chimney with burner
Pf (%)
operating
5,9
Heat loss at the chimney with burner Pfbs
off ΔT 50°C
(%)
0,2
NOx class
Weighted NOx
kPa
28,5
bar
0,285
°C
35 - 60
Domestic hot water
1
2
mg/kWh
169
ppm
96
Minimum pressure
kPa
1000
bar
10
kPa
30
bar
0,3
Maximum flow rate
(ΔT=25 K)
l/min
20
(ΔT=35 K)
l/min
14,2
Minimum flow rate
l/min
2,5
Specific d.h.w. flow rate (ΔT=30 K) * l/min
15,2
* Reference standard EN 625
Gas supply pressures
Gas
Methane G20
Butane G30
Propane G31
- 28 -
0,3
** At minimum useful power
Maximum pressure
Pd (%)
30
bar
14,0
Temp. Minimum-Maximum
Heat loss towards the environment
through the casing with the burner
operating
kPa
Pa
mbar
Nom.
2000
20
Min.
1700
17
Max.
2500
25
Nom.
2900
29
Min.
2000
20
Max.
3500
35
Nom.
3700
37
Min.
2500
25
Max.
4500
45
TECHNICAL SPECIFICATIONS
Ignition pressure
Voltage
V~
230
Frequency
Hz
50
Output at nominal heat input
W
139
Output at minimum heat input
W
137
Output in stand-by
W
3
Degree of protection
IPX5D
Heating/d.h.w. maximum gas flow rate
Methane G20
3
m /h
3,59
Butane G30
kg/h
2,67
Propane G31
kg/h
2,63
Minimum gas flow rate in heating mode
Methane G20
Butane G30
Propane G31
Pa
mbar
Pa
720
7,2
1930
mbar
19,3
Pa
2320
mbar
23,2
Nozzles
N°
Ø mm
/100
Methane G20
15
130
Butane G30
15
78
Propane G31
15
78
125
Methane G20
m3/h
2,12
Butane G30
kg/h
1,58
Chimney design #
Propane G31
kg/h
1,55
Max. flue gas temperature
°C
Min. flue gas temperature
°C
kg/s
0,0196
Minimum gas flow rate in d.h.w. mode
114
Methane G20
3
m /h
1,64
Max. flue gas mass flow rate
Butane G30
kg/h
1,22
Min. flue gas mass flow rate
kg/s
0,0205
Propane G31
kg/h
1,20
Max. air mass flow rate
kg/s
0,0190
Min. air mass flow rate
kg/s
0,0205
Max. gas pressure at the burner in heating mode
Methane G20
Butane G30
Propane G31
Pa
mbar
1200
12
Butane G30
Propane G31
Flue gas discharges
Pa
2770
Boiler type
mbar
27,7
B22 C12 C32 C42 C52 C62 C82
Pa
3310
Coaxial air/flue gas duct Ø
mm
mbar
33,1
Twin pipe air/flue gas duct Ø
mm
80/80
Coaxial air/flue gas duct to roof Ø
mm
80/125
Min. gas pressure at the burner in heating mode
Methane G20
# Values refer to tests with 80 mm 1 + 1 twin pipe
discharge and Methane gas G20
Pa
60/100
400
mbar
4,0
Pa
940
mbar
9,4
Pa
1300
mbar
13,0
- 29 -
INSTALLATION
Electrical data
TECHNICAL SPECIFICATIONS
Other characteristics
Height
mm
703
Width
mm
400
Depth
mm
325
Weight
kg
34,7
Max. ambient temperature
°C
60
Min. ambient temperature
°C
-15
G20 Hi. 34.02 MJ/m3 (15°C, 1013.25 mbar)
G30 Hi. 45.65 MJ/kg (15°C, 1013.25 mbar)
G31 Hi. 46.34 MJ/kg (15°C, 1013.25 mbar)
INSTALLATION
1 mbar corresponds to approx. 10 mm H20
- 30 -
TECHNICAL SPECIFICATIONS
4.7 Hydraulic characteristic
4.8 Expansion tank
The hydraulic characteristic represents the
pressure (head) available in the heating system based on the flow rate.
The difference in height between the safety
valve and the highest point in the system can
be max. 10 metres.
If differences are greater, increase the preload
pressure of the expansion tank and the cold
system by 0.1 bar for each 1 metre increase.
0,6
0,5
bar
Total capacity
0,3
Preload pressure
0,2
0,1
0,0
Useful capacity
0
200
400
600
l/h
800
1000 12001250
Figure 4.4
32 kW
bar
0,4
0,3
0,2
0,1
0,0
0
200
400
600
l/h
800
1000
7.0
kPa
100
bar
1.0
l
3.5
l
109
* In conditions of:
• Average max. temperature of the system
85°C
• Initial temperature when filling the system
10°C.
0,6
0,5
Maximum system
content *
Figure 4.6
l
1200
1400
Figure 4.5
For systems with contents that exceed the maximum system content
(indicated in the table), a supplementary expansion tank must be
installed.
The loss of load for the boiler has already been
subtracted.
Flow rate with the thermostatic cocks
closed
The boiler has an automatic by-pass, which
protects the primary exchanger.
If the circulation of water in the heating system
decreases too much or totally stops due to the
closure of thermostatic valves or circuit cocks,
the by-pass guarantees a minimum circulation
of water inside the primary exchanger.
The by-pass is calibrated for a differential pressure of approx. 0.3 - 0.4 bar.
- 31 -
INSTALLATION
24-28 kW
0,4
INSTALLATION
5
INSTALLATION
5.1 Warnings
The unit must discharge the combustion products directly outside
or in a suitable exhaust flue designed for that purpose and in
compliance with current national
and local standards.
INSTALLATION
Before installation, it is mandatory to thoroughly wash all of the system pipes with nonaggressive chemical products. The purpose of
this procedure is to remove any residuals or
impurities that could jeopardise proper boiler
operation.
After washing, the system must be treated.
The conventional warranty does not cover any
problems resulting from the failure to follow
these instructions.
Check:
• That the boiler is suitable for the type of gas
distributed (check adhesive label).
If it is necessary to adapt the boiler to a different type of gas, see section "GAS CONVERSION" on page 57.
• That the characteristics of the electric, water
and gas supply networks comply with those
of the plate.
The minimum heating system return temperature must never be lower than 40 °C.
The combustion products may only be discharged using the flue gas exhaust kits provided by the manufacturer, as they are an integral
part of the boiler.
For LPG gas, the installation must comply with
the requirements of the distributing companies and comply with the requirements of current technical standards and laws.
The safety valve must be connected to a suit- 32 -
able discharge duct to avoid flooding if it is
activated.
The electric installation must comply with
technical standards, in particular:
• It is mandatory to connect the boiler to an
effective grounding system with a specific
terminal.
• A single pole switch must be installed near
the boiler to permit complete disconnection
in the conditions of overvoltage category III.
For the electrical connections refer to section
"Electrical connection" on page 41.
• The electric conductors for connecting
the remote control to the boiler must go
through different channels than those for the
mains voltage (230 V), as they are supplied
with low safety voltage.
5.2 Precautions for installation
Follow these directions for installation:
• Mount the boiler on a resistant wall
• Respect the measurements of the flue gas
evacuation duct (provided in section "Flue
gas discharge dimensions and lengths" on
page 35) and the correct systems for installing the duct shown in the instruction
sheet provided together with the flue gas
evacuation pipe kit.
• Leave the minimum distances indicated in
Figure 5.1 around the unit.
INSTALLATION
250
25
25
• Do not add antifreeze or anticorrosion products to the heating water in the wrong concentrations or with chemical/physical characteristics that are incompatible with the
hydraulic boiler components.
The manufacturer does not assume any liability
for this type of damage.
Inform the user about the antifreeze function of the boiler and any chemical products
added to the heating system.
5.3 Installing the boiler support
200
All measurements are expressed in mm
Figure 5.1
The boiler is provided with a support for assembly.
A paper template (provided) is available that
contains all the measures and information for
correctly installing the support.
INSTALLATION
• Leave 6 cm of free space in front of the boiler if it is inserted in a cabinet, protection or
niche.
• In the case of an old heating system, before
installing the boiler, carefully clean it in order to remove any sludgy deposits that have
formed over time.
• It is recommended to install a purification
filter in the system or use a product that conditions the circulating water. This latter solution, in particular, not only cleans the system
but also provides anticorrosion protection by
forming a protective film on the metal surfaces and neutralising the gases in the water.
Filling the heating system:
• If the boiler is installed in rooms where the
ambient temperature could go below 0°C, it
is recommended to take the proper precautions in order to prevent damaging the boiler.
- 33 -
INSTALLATION
5.4 Dimensions
5.5 Fittings
The boiler complies with the following dimensions:
C
95
B
C
The boiler uses the following fittings:
A
85
Pipe ø
237
MR
ø 16/18
AB
US
ø 12/14
147
Gas
250
193
20
20
101
35 165
Cock
255
G 3/4 MF
ø 16/18
ES
ø 12/14
RR
ø 16/18
G1/2F 3 bar safety valve fitting
561
703
D
G
F
E
83
H
G
115
I
105
E-F
H-I
65 52 64 65
400
325
INSTALLATION
Figure 5.2
A Flue gas exhaust / air suction (coaxial ø
60/100)
B Flue gas exhaust (ø 80 twin pipe)
C Flue gas exhaust (ø 80 twin pipe)
D Boiler mounting support
E MR - Heating delivery
F US - D.h.w. outlet
G Gas
H ES - D.h.w. inlet
I RR - Heating return
All measurements are expressed in mm.
5.6 Boiler assembly
• Remove the protective caps from the boiler
pipes.
• Hook the boiler on the support.
• Screw the cock on the boiler.
• Fix or weld the flared stub pipes, respectively
Ø 14 mm for d.h.w. inlet and outlet and Ø 18
mm for hydraulic system return, delivery and
gas.
Figure 5.3
• Install a shut-off valve on the d.h.w. inlet. The
purpose of the cock is to hydraulically isolate
the unit, making normal maintenance possible.
• If the hydraulic heating system is higher than
the boiler surface, cocks should be installed
in order to disconnect the system for maintenance purposes.
- 34 -
INSTALLATION
• Block the pipes by placing 1/2" and 3/4" gaskets between the boiler fittings.
• Carry out a leakage test for the gas supply
system.
• Connect the safety valve discharge to a discharge funnel Figure 5.4.
Therefore, follow the general instructions for installing the horizontal sections and install one or
more condensate collection kits
where necessary.
1,5°
Figure 5.5
Figure 5.4
5.7 Flue gas discharge dimensions
and lengths
The flue gas discharge/air suction can be implemented with the following methods:
C12 C32 C42 C52 C62 C82 B22
Consult the sheet provided together with the
selected, separately packaged kit.
The horizontal sections of the flue gas pipes
must have a slope of approx. 1.5 degrees (25
mm per metre).
The discharge duct must be implemented in order to absolutely prevent the stagnation of condensate
inside the duct as well as the backflow of the condensate inside the
combustion chamber, therefore
the terminal must be lower than
the boiler side entrance.
Wall-mounting flue gas discharge kit (Figure 5.8 A)
Coaxial duct Ø 60/100 mm with a nominal
length (L Figure 5.8) of 915 mm.
This kit makes it possible to discharge the flue
gas in the wall behind or to the side of the boiler.
The minimum length of the duct and the maximum length with an extension must comply
with the following parameters:
Coaxial Ø 60/100 mm
Diaphragm
M290.24CM/..
For lengths between 0.5 m and 1 m
ø 38 mm
For lengths between 1 m and 2 m
ø 47 mm
For lengths between 2 m and 4 m
without
M290.28CM/..
For lengths between 0.5 m and 1 m
ø 38 mm
For lengths between 1 m and 2 m
ø 47 mm
For lengths between 2 m and 4 m
without
M290.32CM/..
For lengths between 0.5 m and 1 m
ø 41 mm
For lengths between 1 m and 3 m
without
Figure 5.6
- 35 -
INSTALLATION
The following kits are available for connection
to the boiler:
INSTALLATION
The diaphragm must be inserted or
removed following the instructions in Figure 5.6.
The diaphragm must be positioned
as shown in Figure 5.7.
C12
B
C
INSTALLATION
A
90°
45°
Figure 5.7
Figure 5.8
Vertical flue gas discharge kit with 90° elbow (Figure 5.8 B)
Coaxial duct Ø 60/100 mm (Figure 5.8).
This kit makes it possible to raise the discharge
axis of the boiler by 635 mm.
The minimum length of the duct and the maximum length with an extension must comply
with the parameters in the previous tables.
The terminal must always discharge horizontally.
Twin pipe suction discharge duct kit Ø 80
mm (Figure 5.11 - Figure 5.12)
This kit makes it possible to separate the flue
gas discharge from the air suction.
The terminals can be inserted in exhaust flues
designed for this purpose, or discharge flue gas
or intake air directly on the wall.
The minimum length of the pipes may not be
less than 1 m, while the max, sum of the sections A + B (see Figure 5.11 and Figure 5.12)
that can be achieved using extensions must
not exceed the values provided in the following table (see also the table in Figure 5.10 for
the 24 kW model and graphs in Figure 5.13 for
the 28 and 32 kW models):
Supplementary 45° or 90° elbow (Figure 5.8
C)
Coaxial elbows Ø 60/100 mm. When these
elbows are used in the duct, they reduce the
maximum length of the flue gas ducts for:
For a 45° elbow loss
0.5 m
For a 90° elbow loss
1m
Model
Max length (A+B)
24 kW
30 metres
28 kW
30 metres
32 kW
15 metres
Extensions are available for reaching the maximum permissible lengths.
- 36 -
INSTALLATION
Based on the maximum length that
can be implemented with the kit,
insert the correct diaphragm between the boiler surface and the
flue gas /air suction stub pipe.
C12
Model 24 kW
Air diaphragm
Gasket
Flue gas
fitting
Boiler
gasket
Boiler
surface gasket
Flue gas
diaphragm
Gasket
If the flue gas discharge pipe crosses through inflammable walls, it
must be insulated with at least 5
cm of insulation.
90° and 45° elbows are available that reduce
the total max length of the ducts:
Models 28 and 32 kW
Air suction flanged
stub pipe
Figure 5.11
Flue gas
fitting
Boiler
gasket
Boiler
surface gasket
For a 45° elbow loss
0.9 m
For a 90° elbow loss
1.65 m
Flue gas
diaphragm
Figure 5.9
M90.24CM/..
Twin split pipes Ø
80/80 mm
For lengths between
0.5 m and 15 m
For lengths between
15 m and 30 m
Diaphragm
Flue gas
Air
ø 38 mm
Ø no
Ø 47 mm Ø 50 mm
Figure 5.10
- 37 -
INSTALLATION
Air suction flanged
stub pipe
INSTALLATION
ducts, refer to the following table:
C42
Mod. 28kW
”a” discharge (m)
90°
45°
C52
32
30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
0
Area valid for calculating the
length of the
suction/discharge pipe
With diaphragm
38 mm
With diaphragm
47 mm
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32
”b” suction (m)
”a” discharge (m)
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
INSTALLATION
C82
Figure 5.12
The air intake and the flue gas discharge must not be installed on
opposite walls of the building (EN
483).
In the flue gas exhaust duct with
risk of condensation for sections
longer than 7 metres.
To determine the maximum permissible
lengths of the flue gas suction and exhaust
- 38 -
Mod. 32kW
Area valid for calculating the
length of the
suction/discharge pipe
0 1 2 3 4 5
With diaphragm
50 mm
Without
diaphragm
6 7 8 9 10 11 12 13 14 15 16
”b” suction (m)
Figure 5.13
TYPE C62
If using ducts and terminals from another manufacturer (type C62), these must be approved
and in the case of a flue gas duct, materials
must be used that comply with the condensation products.
When dimensioning the ducts, account for the
residual pressure difference at the fan:
INSTALLATION
Maximum recirculation of CO2 in the
suction duct
24 kW
28 kW
32 kW
75
106
93
139
Pa
Pa
Pa
°C
167
°C
130
0.9
0.8
0.6
°C
%
%
%
Roof-mounting flue gas discharge kit (Figure 5.14)
Coaxial duct Ø 80/125 mm with a nominal
length of 0.96 m.
This kit makes it possible to discharge directly
to the roof.
C32
Coaxial Ø 80/125 mm
Diaphragm
(Roof discharge)
M290.24CM/..
For lengths between 0.5 m and 2.0 m
ø 38 mm
For lengths between 2.0 m and 6.5 m
ø 47 mm
For lengths between 6.5 m and 8.5 m
without
M290.28CM/..
For lengths between 0.5 m and 1.0 m
ø 38 mm
For lengths between 1.0 m and 6.5 m
ø 47 mm
For lengths between 6.5 m and 8.5 m
without
M290.32CM/..
For lengths between 0.5 m and 1.0 m
ø 41 mm
For lengths between 1.0 m and 6.0 m
without
For lengths greater than 1 metre, install the condensate collection fitting
Figure 5.15
The diaphragm must be inserted or
removed following the instructions provided in this chapter. The
diaphragm must be positioned as
shown in Figure 5.7.
90°
L max
Ø 125
45°
Figure 5.14
Extensions are available for reaching the maximum height.
Its maximum height (L Figure 5.14) with the
extensions is:
Coaxial Ø 80/125 mm 90° and 45° elbows are
available that reduce the total max length of
the ducts:
For a 45° elbow loss
0.5 m
For a 90° elbow loss
1m
For lengths greater than 1 metre,
install the condensate collection
fitting.
Discharge kit TYPE B22 (Figure 5.16)
This type of flue gas discharge takes the comburent air necessary in the same room where
the boiler is installed, the combustion product
must be discharged outside and can be wall
mounted or boiler mounted.
- 39 -
INSTALLATION
Useful static pres- 24 kW
sure at nominal heat 28 kW
input
32 kW
24 kW
Flue gas overtem28 kW
perature
32 kW
INSTALLATION
There must be a suitable air intake
in the room where the boiler is installed for the supply of comburent
air and for room ventilation.
For proper operation, the minimum air exchange necessary must be 2 m3/h for each kW
of heat input.
B22 Ø 80 mm discharge
M290.24CM/..
For lengths between 0.5
and 15 m
M290.28CM/..
For lengths between 0.5
and 15 m
M290.32CM/..
For lengths between 0.5
and 3.5 m
For lengths between 3.5
and 15 m
Diaphragm
m
ø 38 mm
m
ø 38 mm
m
ø 50 mm
m
without
For lengths greater than 1 metre, install the condensate collection fitting
Figure 5.17
INSTALLATION
The diaphragm must be positioned
as shown in Figure 5.7.
B22
For flue gas/air diaphragms and
the maximum lengths, refer to the
figures Figure 5.9 and Figure 5.13.
90° and 45° elbows are available that reduce
the total max length of the ducts:
For a 45° elbow loss
0.9 m
For a 90° elbow loss
1.65 m
In the flue gas exhaust duct with
risk of condensation for sections
longer than 7 metres.
Figure 5.16
Extensions are available for reaching the maximum permissible lengths.
- 40 -
INSTALLATION
Discharge kit for exteriors (Figure 5.18)
J
B22
90°
45°
220
320
= --- 1,65 m
= --- 0,9 m
Figure 5.18
K
INSTALLATION
Extensions are available for reaching the maximum permissible lengths.
The minimum length of the duct and the maximum length with an extension must comply
with the parameters in Figure 5.17:
90° and 45° elbows are available that reduce
the total max length of the ducts:
For a 45° elbow loss
0.9 m
For a 90° elbow loss
1.65 m
In the flue gas exhaust duct with
risk of condensation for sections
longer than 7 metres.
5.8 Electrical connection
• Unscrew the screws J and remove the front
panel K by pulling it towards you and then
pushing it upwards in order to free it from the
upper seats Figure 5.19.
Figure 5.19
• Identify the terminal board cover L (Figure
5.20) remove the sealing screws and open it.
- 41 -
INSTALLATION
The installation of the ambient thermostat
excludes the installation of the remote control.
When connecting any type of ambient thermostat, the electric jumper between “A and
B” must be removed.
L
The electric conductors for the ambient thermostat must be inserted between terminals “A
and B” as shown in (Figure 5.21).
Do not connect live cables on the
“A and B” terminals.
INSTALLATION
Figure 5.20
If the power supply cable is damaged, it
must be replaced by the manufacturer or by
its technical support service or by a person
with similar qualifications.
Connecting to the electric power supply
network
• Connect the electric power supply cable to
the single pole switch, respecting the correspondence of the line (brown wire) and the
neutral (blue wire).
• Connect the ground wire (yellow/green)
to an effective grounding system.
The electric power supply cable or wire for
the unit must have a minimum section of 0.75
mm2, be kept at a distance from hot or sharp
parts and comply with current technical standards.
5.9 Connecting an ambient thermostat or zone valves
Use the terminals indicated in (Figure 5.21) to
connect the ambient thermostat.
- 42 -
6
X11
1
T
Voltage free
contacts for the
ambient thermostat
Boiler card
Figure 5.21
The thermostat must have insulation class II ( )
or be correctly connected to the ground.
INSTALLATION
Ambient
thermostat
T
6
X11
V
1
Zone valve with
microcontacts
Boiler
card
5.10 Installing the external temperature probe
(optional)
The external probe must be installed on the external wall of the building avoiding:
• Direct radiation of the sun's rays.
• Humid walls or walls subject to the formation
of mildew.
• Installation near fans, drain outlets or chimneys.
5.11 Electric connection between the
boiler and the external probe
To connect the external probe to the boiler use
electric cables with a section no less than 0.50
mm2.
The electric conductors for connecting
the external probe to the boiler must go
through different channels than those for
the mains voltage (230 V), as they are supplied with low safety voltage and their maximum length may not exceed 20 metres.
Figure 5.22
Use the ambient thermostat terminals indicated in Figure 5.22 to connect the zone valves.
The electric conductors of the zone valve micro contacts must be inserted in the “A and B”
terminals of the ambient thermostat terminal
board as shown in Figure 5.22.
The electric jumper between “A and B” must
be removed.
Do not connect live cables on the
“A and B” terminals.
Use the terminals indicated in (Figure 5.23) to
connect the external probe.
6
X11
1
Boiler
thermostat/
boiler probe
External probe
Remote
control/
ambient
thermostat
Figure 5.23
- 43 -
INSTALLATION
LN
Voltage free contacts for the zone micro valves
Connecting zone valves controlled by the
ambient thermostat
INSTALLATION
5.12 Electrical connection of the remote control (optional)
Use the terminals indicated in (Figure 5.23) to
connect the remote control.
The installation of the remote control excludes the installation of the remote control.
To connect the remote control to the boiler, refer also to the REMOTE CONTROL manual.
The electric jumper between “A and B” must
be removed (Figure 5.23).
Figure 5.25
• Press buttons
or
to display the
"PM15" program that enables the external
probe (Figure 5.26).
INSTALLATION
5.13 Remote enabling of operation
with the external probe
Functioning with the external probe in the
boiler must be enabled if the remote control is
used.
The programming of the REMOTE (if installed)
is used to enable its operation.
• Press the button for more than 3 seconds
to enter
mode.
Figure 5.26
• Modify the programmed SET by pushing
or
until a setting of 60 is displayed and wait for the programmed number
to flash (Figure 5.27).
0
21
3
15
9
18
6
12
Figure 5.24
Press buttons
and
together to enter
transparent programming (Figure 5.25).
Figure 5.27
• Press
- 44 -
to exit programming.
INSTALLATION
5.14 Setting the K coefficient of the external probe
The boiler is set with a K coefficient equal to
zero for boiler functioning without the probe
connected.
If the remote control (optional) is connected to the boiler, refer to Figure 5.28.
In this case, the K coefficient must be set remotely.
15
10
14
11
13
Delivery temperature °C
K=6
K=4
K=3
12
K=2
K=1,5
80
Figure 5.29
70
K=1
60
50
K=0,5
40
30
15
10
Figure 5.28
5
0
-5
-10
-15
-20
-25
External temperature °C
The K coefficient is a parameter that increases
or decreases the boiler delivery temperature as
the external temperature varies.
When installing the external probe, this parameter must be set based on the efficiency of the
heating plant to optimise the delivery temperature (Figure 5.28).
E.g. To achieve a temperature delivered to the
heating system of 60°C with an outdoor temperature of -5°C, set a K of 1.5 (dashed line in
Figure 5.28).
Sequence for setting the K coefficient
• Enter “programming mode” by pressing keys
12-13-14 together for 10 seconds (Figure
5.29) until the LCD display indicates the letters P01, alternating with the value of the
parameter, indicating entry in “parameter 01”
(Figure 5.30).
Figure 5.30
• Scroll the various parameters using keys 13
or 14 until the LCD display indicates the letters P15 and the value of the parameter, indicating entry in “parameter 15” (Figure 5.31).
Figure 5.31
- 45 -
INSTALLATION
20
20
INSTALLATION
• Using key 10 or 11 it is possible to change the
value of parameter 15 from a minimum of 01
to a maximum of 60 based on the selected
curve of the K coefficient in Figure 5.28 (the
value read on the display corresponds to the
decimal values of the K coefficients).
• By pressing key 12 (Figure 5.29) confirmation
of the inserted value is obtained.
• By pressing keys 12 and 13 together (Figure
5.29) you will exit without changing the value
(return to the parameter list Figure 5.31).
• Press keys 12-13-14 together for 10 seconds
(Figure 5.29) to exit "programming mode".
Sequence for setting the K coefficient with
the remote connected
The setting of the K coefficient can be selected
with the REMOTE programming.
• Electrically power the boiler by turning on
the installed bipolar switch.
• Press the button for more than 3 seconds
to enter
mode (Figure 5.33).
0
21
3
15
9
18
INSTALLATION
At this point the plant delivery temperature
will follow the trend in relation to the set K coefficient.
If the ambient temperature is not comfortable,
you can increase or decrease the heating system delivery temperature by ± 15°C with the
keys 13 (decrease) and 14 (increase) (Figure
5.29).
6
12
Figure 5.33
Press the button
window (Figure 5.34).
to display the K REG
Delivery
temperature °C
80
70
+ 15 °C
60
50
K = 1,5
40
-15 °C
30
20
20
15
Figure 5.32
10
5
0
-5 -10 -15 -20 -25
External temperature °C
The temperature trend when changing the setting using keys 13 and 14 for a K 1.5 is shown
in Figure 5.33.
- 46 -
Figure 5.34
Use buttons
and
to change the
value.
Press to exit the
mode (Figure 5.34).
5.15 Setting pump post-circulation
The pump, in heating function, is set for a postcirculation of about one minute at the end of
each heat demand.
This time can be changed from a minimum
INSTALLATION
of zero to a maximum of four minutes by programming it either from the control panel or
remotely.
• Enter “programming mode” by pressing keys
12-13-14 together for 10 seconds (Figure
5.35) until the LCD display indicates the letters P01, alternating with the value of the
parameter, indicating entry in “parameter 01”
(Figure 5.36).
15
10
14
11
13
12
Figure 5.35
• It is possible to modify the value of parameter 11 between 00=0s to 99=255s using keys
10 or 11 (each unit increase or decrease on
the display corresponds to 2.5 seconds). E.g.
17=42 seconds.
• By pressing key 12 (Figure 5.35) confirmation
of the inserted value is obtained.
• By pressing keys 12 and 13 together (Figure
5.35) you will exit without changing the value
(return to the parameter list Figure 5.37).
• Press keys 12-13-14 together for 10 seconds
(Figure 5.35) to exit "programming mode".
REMOTE programming
• Press the button for more than 3 seconds
to enter
mode (Figure 5.38).
0
Figure 5.36
21
3
15
9
18
6
12
• Scroll the various parameters using keys 13
or 14 until the LCD display indicates the letters P15 and the value of the parameter, indicating entry in “parameter 11” (Figure 5.37).
Figure 5.38
• Press buttons
and
together to enter transparent programming (Figure 5.39).
- 47 -
INSTALLATION
Figure 5.37
INSTALLATION
5.16 Selecting reignition frequency
Figure 5.39
• Press buttons
or
to display the
"PM11" program that enables pump postcirculation (Figure 5.40).
When the boiler functions in normal on/off
heating mode, the minimum time between
two ignitions is set to three minutes (re-ignition frequency)..
This time can be changed from a minimum of
zero to a maximum of eight and a half minutes
by programming it either from the control panel or remotely.
• Enter “programming mode” by pressing keys
12-13-14 together for 10 seconds (Figure
5.42) until the LCD display indicates the letters P01, alternating with the value of the
parameter, indicating entry in “parameter 01”
(Figure 5.43).
INSTALLATION
15
10
14
11
13
Figure 5.40
• To modify the programmed SET, press
or
and wait for the programmed number to start to flash (Figure 5.41). Each step increase or decreased corresponds to 1 second.
12
Figure 5.42
Figure 5.41
• Press
to exit programming.
Figure 5.43
- 48 -
INSTALLATION
• Scroll the various parameters using keys 13
or 14 until the LCD display indicates the letters P10 and the value of the parameter, indicating entry in “parameter 10” (Figure 5.44).
0
21
3
15
9
18
6
12
Figure 5.45
• Press buttons
and
together to enter transparent programming (Figure 5.46).
• It is possible to modify the value of parameter 10 between 00=0s to 100=510s using
keys 10 or 11 (each unit increase or decrease
on the display corresponds to 5 seconds). E.g.
36=180 seconds.
• By pressing key 12 (Figure 5.42) confirmation
of the inserted value is obtained.
• By pressing keys 12 and 13 together (Figure
5.42) you will exit without changing the value
(return to the parameter list Figure 5.44).
• Press keys 12-13-14 together for 10 seconds
(Figure 5.42) to exit "programming mode".
Figure 5.46
• Press buttons
or
to display the
"PM10" program for selecting ignition frequency (Figure 5.47).
REMOTE programming
Via REMOTE programming you can select a
minimum time between two ignitions when
the boiler is operating in normal on/off heating mode.
• Press the button for more than 3 seconds
to enter
mode (Figure 5.45).
Figure 5.47
Figure 5.47 shows a programmed SET of 90,
which corresponds to a re-ignition time of approx. 3 minutes.
The adjustment range is between 0 and 8 and
- 49 -
INSTALLATION
Figure 5.44
INSTALLATION
a half minutes.
Each step increase or decreased corresponds
to 2 seconds.
Examples of hydraulic plants
High temperature zone + low temperature
zone.
External
temperature probe
S
• To modify the programmed SET, press
or
and wait for the programmed number to start to flash (Figure 5.48).
Low temperature
zone
Figure 5.48
to exit programming.
5.17 Examples of hydraulic plants with
hydraulic separator (optional)
The hydraulic separator creates a reduced load
loss zone that makes the primary circuit and
secondary circuit hydraulically independent.
In this case, the flow rate that passes through
the circuits depends exclusively on the characteristics of the flow rate of the pumps.
Therefore by using a hydraulic separator, the
secondary circuit's flow rate is circulated only
when the relative pump is on.
When the pump for the secondary circuit is
off, there is no circulation in the corresponding circuit and therefore the flow rate pushed
by the pump of the primary circuit is by-passed
through the separator.
Therefore, with a hydraulic separator it is possible to have a production circuit with a constant
flow rate and a distribution circuit with a variable flow rate.
- 50 -
Figure 5.49
High temperature
zone
High temperature zone + 2 low temperature
zones.
S
INSTALLATION
• Press
External
temperature
probe
Low temperature
zone 2
Figure 5.50
Low
temperature
zone 1
High
temperature
zone
PREPARATION FOR SERVICE
6
Preparation for service
6.1 Warnings
Before performing the operations
described below, make sure that
the installed bipolar switch is in
the off position.
6.2 Sequence of the operations
Gas supply
• Open the cock for the gas meter and for the
boiler 5 in Figure 6.1.
5
Closed position
5
Open position
Filling the heating system
• Remove the front panel on the body, see section "Removing the body panels" on page
59.
• Open the installed system cocks
• Open one or more hot water cocks to bleed
the pipes.
• Loosen the automatic bleed valve cap 27 in
Figure 6.3.
Figure 6.1
• Check for leaks in the gas fitting using a
soapy solution or an equivalent product.
• Reclose the gas cock 5 in Figure 6.2.
27
25
Figure 6.3
• Open the radiator cocks.
- 51 -
INSTALLATION
Figure 6.2
PREPARATION FOR SERVICE
INSTALLATION
• Fill the heating circuit, see section "Filling the
heating circuit" on page 14 .
• Bleed the radiators and the various high
points of the installation, then reclose any
manual bleeding devices.
• Remove the cap 25 in Figure 6.3 and release
the pump by turning the rotor using a screwdriver.
Bleed the pump during this operation.
• Reclose the pump cap.
• Complete filling the heating system.
The installation as well as the pump must be
bled multiple times.
• Remove the front panel on the body.
• Electrically power the boiler by turning on
the installed bipolar switch. The LCD display
shows the symbol
(the dashes are
turned on in sequence to simulate flowing)
(Figure 6.4).
The LCD display shows the boiler temperature
(primary circuit) and the symbols
and
(Figure 6.6).
Figure 6.6
• Open the gas cock
• Make sure that the ambient thermostat is in
the position “call for heat”.
• Both the correct operation of the boiler, both
in d.h.w. mode as well as in heating mode.
• Check the gas pressures and flow rates as
shown in section "CHECKING THE GAS REGULATION" on page 53 in this manual.
• Turn off the boiler by pressing key 12 (Figure
6.5) for 2 seconds until the symbol
appears on the display (the dashes appear in
sequence to simulate flowing) (Figure 6.4).
Figure 6.4
• Press key 12 for 2 seconds until both symbols
and
appear on the display (Figure
6.5).
15
10
14
11
13
12
Figure 6.5
- 52 -
• Instruct the user about the correct use of the
unit and the following operations:
- ignition
- switching off
- regulation
The user is responsible for keeping the documentation complete and within reach for
consultation.
CHECKING THE GAS REGULATION
7
CHECKING THE GAS REGULATION
7.1 Warnings
30
Each time after measuring the gas
pressure, properly close all tapping points that were used.
After each gas regulation operation, the valve adjustment components must be sealed.
Attention, danger of electrocution.
The boiler is live during the operations described in this section.
Never touch any electrical part.
31
7.2 Operations and gas setting
Checking the network pressure
With the boiler off, check the supply pressure
using the tapping point 31 in Figure 7.1 and
compare the read value with the one shown
in the Gas supply pressure table in the section
"Technical data M290.24CM/..." on page 22,
"Technical data M290.28CM/..." on page 25
and "Technical data M290.32CM/..." on page
28.
• Properly reclose the tapping point 31 in Figure 7.1.
Checking the burner pressure in d.h.w.
mode
• Open the tapping point 30 in Figure 7.1 and
connect a pressure gauge.
Figure 7.1
• Enter “programming mode” by pressing keys
12-13-14 together for 10 seconds (Figure
7.2) until the LCD display indicates the letters P01, alternating with the value of the
parameter, indicating entry in “parameter
01” (Figure 7.3).
15
10
14
11
13
12
Figure 7.2
- 53 -
INSTALLATION
• Remove the front panel on the body, see section "Removing the body panels" on page
59.
CHECKING THE GAS REGULATION
Figure 7.3
• Press key 13 or 14 (Figure 7.2) to scroll the parameters until parameter P09 that alternates
with the value of the parameter, indicating
entry in "parameter 09" (chimney sweep 00
= chimney sweep not activated) (Figure 7.4.
Figure 7.5
• Make sure that the ambient thermostat is in
the position “call for heat”.
• Withdraw an abundant amount of dhw by
opening the cocks.
• Compare the measures pressure value with
the one indicated in the following tables.
INSTALLATION
M290.24CM - Min. gas pressure at the burner
Methane G20
Butane G30
Propane G31
Pa
220
mbar
2,2
Pa
560
mbar
5,6
Pa
650
mbar
6,5
1 mbar corresponds to approx. 10 mm H20
Figure 7.6
Figure 7.4
• Use keys 10 or 11 to change this value to 01
(chimney sweep activated in minimum dhw
mode) and press 12 to confirm. LP will appear on the display alternated with the minimum d.h.w. temperature (Figure 7.5).
M290.28CM - Min. gas pressure at the burner
Methane G20
Butane G30
Propane G31
Pa
180
mbar
1,8
Pa
490
mbar
4,9
Pa
640
mbar
6,4
1 mbar corresponds to approx. 10 mm H20
Figure 7.7
- 54 -
CHECKING THE GAS REGULATION
M290.32CM - Min. gas pressure at the burner
Methane G20
Butane G30
Propane G31
M290.28CM - Max. gas pressure at the burner
Pa
220
mbar
2,2
Pa
570
mbar
5,7
Pa
750
mbar
7,5
Methane G20
Butane G30
Propane G31
Pa
1180
mbar
11,8
Pa
2790
mbar
27,9
Pa
3550
mbar
35,5
1 mbar corresponds to approx. 10 mm H20
1 mbar corresponds to approx. 10 mm H20
Figure 7.8
Figure 7.11
M290.32CM - Max. gas pressure at the burner
• Use keys 13 or 14 (Figure 7.2) to change the
status to dP (chimney sweep activated in
maximum dhw mode) and press 12 to confirm. dP will appear on the display alternated
with the maximum d.h.w. temperature.
Methane G20
Butane G30
Propane G31
Pa
1200
mbar
12,0
Pa
2770
mbar
27,7
Pa
3310
mbar
33,1
1 mbar corresponds to approx. 10 mm H20
• If the read pressures do not coincide with
the ones in the tables, exit programming by
pressing key 12 and then following calibration operations described below.
Figure 7.9
• Compare the measures pressure value with
the one indicated in the following tables.
M290.24CM - Max. gas pressure at the burner
Methane G20
Butane G30
Propane G31
Pa
1280
mbar
12,8
Pa
2820
mbar
28,2
Pa
3600
mbar
36,0
Calibrating the gas valve
• Enter “programming mode” by pressing keys
12-13-14 together for 10 seconds (Figure
7.2) until the LCD display indicates the letters P01, alternating with the value of the
parameter, indicating entry in “parameter
01” (Figure 7.3).
• Press key 14 (Figure 7.2) to scroll the parameters until displaying parameter P09 (chimney sweep) (Figure 7.4).
• Use key 10 to change this value to 15 and
then press key 12 to confirm. S-H will appear
on the display alternating with the absolute
maximum power parameter (Figure 7.13).
1 mbar corresponds to approx. 10 mm H20
Figure 7.10
- 55 -
INSTALLATION
Figure 7.12
CHECKING THE GAS REGULATION
value on the gas pressure gauge. Remember to keep the trend downward.
• Press key 11 (Figure 7.2) for 5 seconds to
store the value.
• Press key 10 (Figure 7.2) to check the maximum set value and correct it if necessary by
following the procedure described above.
Figure 7.13
• Use keys 14 or 13 (Figure 7.2) to increase or
decrease the value. Wait 3 seconds for the
gas pressure to stabilise and then read the
value on the gas pressure gauge. Remember to keep the trend upward.
• Press key 10 (Figure 7.2) to check the minimum set value and correct it if necessary by
following the procedure described above.
• Disconnect the power supply to exit from
calibration.
• Close the domestic hot water cocks.
INSTALLATION
• Press key 11 (Figure 7.2) for 5 seconds to
store the value.
• Press key 10 (Figure 7.2) to calibrate the gas
minimum. S-L will appear on the display alternating with the absolute minimum power
parameter (Figure 7.14).
Figure 7.14
• Use keys 14 or 13 (Figure 7.2) to increase or
decrease the value. Wait 3 seconds for the
gas pressure to stabilise and then read the
- 56 -
Properly reclose the tapping point.
GAS CONVERSION
8
GAS CONVERSION
8.1 Warnings
The operations for adapting the
boiler to the type of gas available
must be performed by an Authorised Service Centre.
The components used for adapting to the type
of gas available must only be done using original spare parts.
For instructions regarding calibrating the boiler gas valve, refer to section "CHECKING THE
GAS REGULATION" on page 53.
ing the burner nozzles and gaskets.
• Reassemble the burner Figure 8.1, the front
combustion chamber panel and the mobile
wall of the sealed chamber.
• Restore electric power to the boiler.
To set boiler operation with LPG gas (G30 G31) carry out the following settings:
• Enter “programming mode” by pressing keys
12-13-14 together for 10 seconds (Figure
8.2) until the LCD display indicates the letters P01, alternating with the value of the
parameter, indicating entry in “parameter
01” (Figure 8.3).
15
8.2 Operations
Check that the gas cock mounted
on the gas piping to the boiler is
closed and that the unit is not
powered.
• Remove the body's front and side panels as
shown in section "Maintenance" on page
59.
• Remove the mobile wall from the sealed
chamber.
• Remove the front panel from the combustion chamber and the burner in Figure 8.1.
10
14
11
13
12
Figure 8.2
MAINTENANCE
A
A
Figure 8.1
• Convert the type of gas by correctly replac-
Figure 8.3
• Scroll the various parameters using keys 13
- 57 -
GAS CONVERSION
or 14 until the LCD display indicates the letters P05 and the value of the parameter, indicating entry in “parameter 05” (Figure 8.4).
Figure 8.4
• Pressing the 10 key 5 times it is possible to
modify the value of parameter 05 (see table).
Parameter
Gas type
00
G20
05
G31
MAINTENANCE
• By pressing key 12 (Figure 8.2) confirmation
of the inserted value is obtained.
• By pressing keys 12 and 13 together (Figure
8.2) you will exit without changing the value
(return to the parameter list Figure 8.4).
• Press keys 12-13-14 (Figure 8.2) together for
10 seconds to exit "programming mode".
• Calibrate the gas valve according to the instructions in section "CHECKING THE GAS
REGULATION" on page 53.
• Reposition the control panel and remount
the front panel of the body.
• Apply the label indicating the type of gas
and the pressure value for which the unit is
regulated. The self-adhesive label is included
in the transformation kit.
- 58 -
MAINTENANCE
9
Maintenance
A
9.1 Warnings
The operations described in this
chapter must only be performed
by professionally qualified personnel, therefore you are advised
to contact an Authorised Service
Centre.
For efficient and continuous operation, the
user must have maintenance and cleaning carried out once a year by an Authorised Service
Centre technician. If these operations are not
carried out, damage to components and boiler
operation problems will not be covered by the
conventional warranty.
Before performing any cleaning or maintenance operation or before opening or removing the boiler panels, isolate the unit from
the electric power supply using the bipolar
switch installed on the plant and close the gas
cock.
9.2 Removing the body panels
A
A
A
Figure 9.1
Side panels
• Loosen screw B in Figure 9.2 and remove the
side panels, pushing them upward to free
them from the upper supports.
B
B
Figure 9.2
Control panel
Turn the control panel C, as shown in figure
Figure 9.3, to access the components inside
- 59 -
MAINTENANCE
Front panel
• Remove the screws A. Remove the front
panel by moving it upward to free it from the
lower hooks in Figure 9.1.
MAINTENANCE
9.5 Cleaning the primary exchanger
the boiler in an optimal manner.
Remove the front body panel and the front
combustion chamber panel.
If there is dirt on the primary exchanger fins,
fully cover the surface of the burner ramps (using a piece of newspaper or similar) and brush
the primary exchanger them using a bristle
brush.
C
Empty the heating circuit as described in section "Emptying the central heating circuit" on
page 60 and check that the expansion tank
pressure is not less than 1 bar.
If the pressure is lower, correct the pressure.
Figure 9.3
9.3 Emptying the d.h.w. circuit
• Close the installed inlet cocks.
• Open the system's domestic hot water cocks.
9.4 Emptying the central heating
circuit
• Close the central heating system delivery
and return cocks.
• Loosen the boiler drain cock 23 indicated in
Figure 9.4.
Closed
MAINTENANCE
23
Open
9.6 Checking the pressure of the
expansion tank
9.7 Cleaning the domestic hot water
exchanger
Descaling the domestic hot water exchanger
will be assessed by a technician from an Authorised Service Centre, who will perform the
cleaning using specific products.
9.8 Cleaning the burner
The ramp and multigas type burner does not
require particular maintenance, simply dust it
off using a bristle brush. Most specific maintenance for this component will be assessed and
performed by a technician from an Authorised
Service Centre.
9.9 Controlling the flue gas expulsion
duct
Figure 9.4
- 60 -
Have a technician from an Authorised Service
Centre periodically check (at least once a year)
the condition of the flue gas expulsion duct,
the air duct and the efficiency of the flue gas
MAINTENANCE
safety circuit.
To check the vacuum of the Venturi, use the
tapping points indicated in Figure 9.5.
• Check boiler combustion using the flue gas
outlet on the flue gas expulsion pipe near
the boiler and compare the measured data
with the data in the table.
This check may also be carried out with the
boiler operating at maximum power in domestic hot water mode. In that case, this must be
specified in the check report.
Model M290.24CM
Figure 9.5
Refer to the following table for the minimum
pressure value for the Venturi:
Model M290.24CM/..
Minimum Venturi pressure
Nominal heat input
kW
25,5
Nominal efficiency
%
92,8
Combustion efficiency
%
93,7
Air index
n
1,7
Composition of CO2 fumes
%
6,9
Composition of O2 fumes
%
8,6
Flue gas temperature
°C
123
Values refer to tests with 60/100 1 m concentric
discharge and Methane gas G20 and with heating
delivery/return temperature of 60°/80°C
Pa
76
mbar
0.76
Pa
111
Model M290.28CM
mbar
1.11
Nominal heat input
kW
31,1
Nominal efficiency
%
93,3
Figure 9.7
Minimum Venturi pressure
Model M290.32CM/..
Minimum Venturi pressure
Pa
149
Combustion efficiency
%
94,8
mbar
1.49
Air index
n
1,5
Composition of CO2 fumes
%
7,6
Composition of O2 fumes
%
7,3
Flue gas temperature
°C
111
Figure 9.6
9.10 Checking boiler efficiency
Carry out performance checks at the intervals
provided by the laws in force.
Values refer to tests with 60/100 1 m concentric
discharge and Methane gas G20 and with heating
delivery/return temperature of 60°/80°C
Figure 9.8
See also section "Setting the boiler
chimney sweep function" on page
62.
• Start the boiler in heating mode at maximum power.
- 61 -
MAINTENANCE
Model M290.28CM/..
MAINTENANCE
Model M290.32CM
Nominal heat input
kW
33,9
Nominal efficiency
%
93,1
Combustion efficiency
%
94,1
Air index
n
1,6
Composition of CO2 fumes
%
7,2
Composition of O2 fumes
%
8,1
Flue gas temperature
°C
125
Values refer to tests with 60/100 1 m concentric
discharge and Methane gas G20 and with heating
delivery/return temperature of 60°/80°C
Figure 9.11
Figure 9.9
9.11 Setting the boiler chimney sweep
function
With the boiler set to chimney sweep mode,
some automatic boiler functions can be excluded, which makes check and control operations easier.
Chimney sweep function at minimum output in domestic hot water mode
• Press keys 13 and 14 (Figure 9.10) together
until the LCD displays the letters LP that
alternate with the minimum domestic hot
water temperature value (e.g. 45), indicating
the activation of the "chimney sweep function" at minimum d.h.w. output (Figure 9.12).
• Enter “programming mode” by pressing keys
12-13-14 together for 10 seconds (Figure
9.10) until the LCD display indicates the letters P01, alternating with the value of the
parameter, indicating entry in “parameter
01” (Figure 9.11).
MAINTENANCE
15
14
10
Figure 9.12
11
13
12
Figure 9.10
- 62 -
Chimney sweep function at minimum output in heating mode
• Press key 14 to vary the output in chimney
sweep mode: when the LCD displays the letters LP that alternate with the minimum domestic hot water temperature value (e.g. 32),
indicating the activation of the "chimney
sweep function" at minimum d.h.w. output
MAINTENANCE
(Figure 9.13).
in domestic hot water mode (Figure 9.15);
Figure 9.13
Figure 9.15
Chimney sweep function at maximum output in heating mode
• Press key 14 to vary the output in chimney
sweep mode: when the LCD displays the letters cP that alternate with the temperature
of the heating water (e.g. 78), the "chimney
sweep function" is at maximum output in
heating mode (Figure 9.14);
• Press key 12 (Figure 9.10) to exit "chimney
sweep mode" and return to the previously
set boiler status (Figure 9.16).
Winter
Summer
Figure 9.14
Chimney sweep function at maximum output in domestic hot water mode
• Press key 14 again to vary the output in chimney sweep mode: when the LCD displays the
letters dP that alternate with the temperature of the heating water (e.g. 60), the "chimney sweep function" is at maximum output
9.12 Settings for changing the control
card
When the control card is replaced, it must be
configured for the exact boiler type.
Important: In order to check boiler operation and any change to parameters set in
the factory, the table shown in Figure 9.17
must be filled out with the values that are
displayed when scrolling the control card
configuration parameters.
- 63 -
MAINTENANCE
Figure 9.16
MAINTENANCE
PARAMETERS
Boiler model/type
LCD
P 01
Boiler type
P 02
D.h.w. exchanger
P 03
Not used
P 04
Type of gas
P 05
PARAMETERS
Maximum gas valve
calibration value
Minimum heating return temperature °C
Maintenance intervals
D.h.w. entry temperature for calculation
def=10
Pon reference pressure
CO2 offset
Maximum heating delivery temperature °C
Reset (restores the factory parameters)
Chimney sweep
Reignition frequency
in heating mode
Pump post-circulation
Regulation of the useful power in heating
mode
Pump mode operation
P 06
Relay 1 configuration
P 31
Relay 2 configuration
P 32
Burner ignition power
Value of the external
probe K
Minimum power in
heating mode
Burning shut off in
function of d.h.w. temp.
Not used
P 14
User interface
P 19
Not used
P 20
---------------
Not used
P 21
---------------
Not used
P 22
---------------
Not used
P 23
---------------
Not used
Minimum gas valve
calibration value
P 24
---------------
MAINTENANCE
This makes it possible to correctly adjust
this boiler if the control card is replaced.
- 64 -
VALUE
---------------
P 07
LCD
P 26
P 27
P 28
P 29
P 30
Figure 9.17
P 08
• Enter “programming mode” by pressing
keys 12-13-14 (Figure 9.18) together for 10
seconds until the LCD display indicates the
letters P01 alternating with the value of the
parameter, indicating entry in “parameter
01” (Figure 9.19).
P 09
P 10
P 11
P 12
15
P 13
P 15
P 16
10
14
11
13
P 17
P 18
P 25
VALUE
--------------Figure 9.18
12
MAINTENANCE
confirm the value of the parameter with key
12.
• Press keys 14 or 13 to exit without confirming
the modified value.
• Press keys 12-13-14 together for 10 seconds
(Figure 9.18) to exit "programming mode".
Figure 9.19
• Use keys 10 or 11 to modify the value of parameter 01:
01 = 24 kW
02 = 28 kW
03 = 32 kW.
• By pressing key 12 (Figure 9.18) confirmation
of the inserted value is obtained.
• Press keys 14 or 13 to exit without confirming
the modified value.
• Press key 14 to switch to parameter P02 and
display the relative value that was set:
00 = combustion check with flue gas pressure switch.
MAINTENANCE
• Press keys 10 or 11 to change the value and
confirm the value of the parameter with key
12.
• Press keys 14 or 13 to exit without confirming
the modified value.
• Press key 14 to switch to parameter P03 and
display the relative value that was set:
00 = domestic hot water plate heat exchanger.
• Press keys 10 or 11 to change the value and
- 65 -
NOTES
- 66 -
N
25/07
2013
*1796221620*
17962.2162.0301368A5IT
BSG Caldaie a Gas S.p.a. – Biasi Group
Sales and administrative headquarters,
plant and technical support
33170 PORDENONE (Italy) – Via Pravolton, 1/b
+39 0434.238311
+39 0434.238312
www.biasi.it
Sales headquarters
+39 0434.238400
Technical support
+39 0434.238387
Registered office
Via Leopoldo Biasi, 1 – 37135 VERONA
This manual replaces previous versions.
In order to constantly improve its products, BSG Caldaie a
Gas S.p.A. reserves the right to change the data provided
in this manual at any time and without notice. Product
warranty pursuant to Leg. Decree. no. 24/2002
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