Publicité
Les langues disponibles
Les langues disponibles
DOMINA C24 N / C28 N / C32 N
3.6 Air/fume ducts
The diameter of the flue connection pipe must not be less than that of the connection on
the anti-backflow device. Starting from the anti-backflow device it must have a vertical
section at least 50 cm long. Current standards must be complied with regarding sizing
and installation of the flues and connection pipe.
B
The boiler is also equipped with a safety device (fume thermostat) that stops
operation of unit in case of inadequate draught of obstruction of the flue. This
device must never be tampered with or deactivated.
4. SERVICE AND MAINTENANCE
All adjustment, conversion, commissioning and maintenance operations described be-
low must only be carried out by Qualified Personnel (meeting the professional technical
requirements prescribed by current regulations) such as those of the Local After-Sales
Technical Service.
FERROLI declines any liability for damage and/or injury caused by unqualified and un-
authorised persons tampering with the unit.
4.1 Adjustments
Gas conversion
The unit can work on natural gas or LPG and is factory-set for use with one of these two
gases, as clearly shown on the packing and data plate. Whenever a different gas to that
for which the unit is arranged has to be used, the special conversion kit will be required,
proceeding as follows:
1.
Disconnect the boiler power supply and close the gas cock.
2.
Replace the nozzles at the main burner, fitting the nozzles specified in the technical
data table in sec. 5.4, according to the type of gas used.
3.
Supplying power to the unit and open the gas cock.
4.
Change the parameter for the type of gas:
•
put the boiler in stand-by mode
•
press the RESET button for 10 seconds: leds flashing fast for two seconds
•
red LED ON
•
press the RESET button for 5 seconds: leds flashing fast for two seconds
•
turn the DHW knob (rif. 2 - fig. 1) to minimum (for Natural Gas operation) or onto
maximum (for LPG operation)
•
press the RESET button for 5 seconds: leds flashing fast for two seconds
•
Green LED ON
•
turn the heating knob (rif. 1 - fig. 1) to a minimum and then a maximum
•
the boiler will return to stand-by mode
•
place the knobs onto the set temperatures
5.
Adjust the minimum and maximum pressures at the burner (see relevant section),
setting the values given in the technical data table for the type of gas used
6.
Apply the sticker, contained in the conversion kit, near the data plate as proof of the
conversion.
TEST mode activation
Press the RESET button 3 times within 3 seconds to activate TEST mode. The boiler
lights at the maximum heating power set as described in the following section.
Press the RESET button 3 times within 3 seconds to exit TEST mode. On exiting
TEST mode, the set max. heating power will not be changed.
The TEST mode is automatically disabled in any case after 15 minutes.
fig. 5 - TEST mode
Adjustment of pressure at the burner
Since this unit has flame modulation, there are two fixed pressure values: the minimum and max-
imum, which must be those given in the technical data table according to the type of gas.
•
Connect a suitable pressure gauge to pressure point "B" located downstream of the
gas valve
•
Remove the protection cap "D" undoing screw "A".
•
Operate the boiler in TEST mode.
•
Turn the heating knob (ref. 1 - fig. 1) to max.
•
Adjust the max. pressure with screw "G", clockwise to increase the pressure and
anticlockwise to decrease it
•
Disconnect one of the two Faston connectors from the modureg "C" on the gas
valve.
•
Adjust the min. pressure with screw "E", clockwise to decrease the pressure and
anticlockwise to increase it.
•
Reconnect the Faston connector detached from the modureg on the gas valve.
•
Check that the maximum pressure has not changed.
•
Refit protection cap "D".
•
To end the TEST mode repeat the activation sequence or wait 15 minutes.
After checking or adjusting the pressure, make sure to seal the adjust-
A
ment screw with paint or a specific seal.
X3
cod. 3541E073 - Rev. 00 - 02/2014
C
D
E
G
fig. 6 - Gas valve
A - Protection cap screw
B - Pressure point downstream
C - Modureg cable
D - Protection cap
E - Min. pressure adjustment
G - Max. pressure adjustment
Heating power adjustment
To adjust the heating power, switch the boiler to TEST mode (see sec. 4.1). Turn the
heating temperature control knob (ref. 1 - fig. 1) to minimum: the LEDs start flashing se-
quentially, yellow - green - red, indicating the heating power adjustment phase.
Turn the heating temperature control knob (ref. 1 - fig. 1) clockwise to increase the power or anti-
clockwise to decrease it (see sec. 5.5). On reaching the desired power, press the ECO button and
the maximum power will remain that just set; the LEDs return to diagnose the TEST mode (see
sec. 4.1) indicating memorisation of the maximum heating power just set.
Exit TEST mode (see sec. 4.1).
Lighting power adjustment
To adjust the lighting power, switch the boiler to TEST mode (see sec. 4.1). Turn the
DHW temperature control knob (ref. 2 - fig. 1) to minimum: the LEDs start flashing se-
quentially, yellow - green - red, indicating the lighting power adjustment phase.
Turn the DHW temperature control knob (ref. 2 - fig. 1) clockwise to increase the power
or anticlockwise to decrease it (see sec. 5.5). On reaching the desired power, press the
ECO button and the lighting power will remain that just set; the LEDs return to diagnose
the TEST mode (see sec. 4.1) indicating memorisation of the lighting power just set.
Exit TEST mode (see sec. 4.1).
4.2 Commissioning
B
Checks to be made at first lighting, and after all maintenance operations that
involved disconnection from the systems or work on safety devices or parts of
the boiler:
Before lighting the boiler
•
Open any on-off valves between the boiler and the systems.
•
Check the tightness of the gas system, proceeding with caution and using a soap
and water solution to detect any leaks in connections.
•
Check the correct preloading of the expansion tank (ref. sec. 5.4)
•
Fill the water system and make sure that all air contained in the boiler and the sys-
tem has been vented by opening the air vent valve on the boiler and any vent valves
on the system.
•
Make sure there are no water leaks in the system, hot water circuits, connections or boiler.
•
Check the correct connection of the electric system and the functioning of the earth system. l
•
Check that the gas pressure value for heating is as required.
•
Make sure there are no flammable liquids or materials in the immediate vicinity of the boiler
Checks during operation
•
Turn the unit on as described in sec. 2.3.
•
Make sure the fuel circuit and water systems are tight.
•
Check the efficiency of the flue and air-fume ducts during boiler operation.
•
Check correct water circulation between the boiler and systems.
•
Make sure the gas valve modulates correctly in heating and hot water production.
•
Check proper lighting of the boiler by performing various tests, turning it on and off
with the room thermostat or remote control.
•
Make sure the fuel consumption indicated on the meter matches that given in the
technical data table on sec. 5.4.
•
Make sure that with no heating demand the burner ignites correctly on opening a hot
water tap. Check that the heating circulating pump stops and there is regular DHW
production when a hot water tap is turned on during heating operation.
•
Make sure the parameters are programmed correctly and perform any required cus-
tomisation.
A
B
C
D
13
EN
Publicité
