Accorroni W, Technical Information

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1.10 Dimensions .............................................................................. - W version ............................ 9
1.11 Exploded view ......................................................................... - WR version ........................ 10
1.11 Exploded view ......................................................................... - WD version ........................ 12
1.11 Exploded view ......................................................................... - W version .......................... 14
1.12 Wiring diagram ...................................................................................................................... 16
2 . CONTROL AND SAFETY DEVICES ..................................................................................... 17
2.1 Gas controller ........................................................................................................................ 17
2.2 Gas valve .............................................................................................................................. 17
2.3 Differential pressure switch ................................................................................................... 17
2.4 Fan thermostat ...................................................................................................................... 18
2.5 Safety thermostat .................................................................................................................. 18
SECTION 2 - TECHNICAL INFORMATION FOR THE INSTALLER
3. IMPORTANT INFORMATION ............................................................................................... 19
3.1 Qualifications of the installer .................................................................................................. 19
3.2 Related documents ................................................................................................................ 19
3.3 Transport and handling ......................................................................................................... 19
3.4 Data check ............................................................................................................................ 19
3.5 Using the instructions ............................................................................................................ 19
4. INSTALLATION ..................................................................................................................... 19
4.1 Positioning instructions .......................................................................................................... 19
4.2 Air intake and flue exhaust ducts ........................................................................................... 20
4.3 Outside positioning of the flue gas exhaust terminal .............................................................. 21
4.4 Installation operations ............................................................................................................ 22
5. COMMISSIONING ................................................................................................................ 26
5.1 Tests ..................................................................................................................................... 26
5.2 Ignition ................................................................................................................................... 26
5.3 User information .................................................................................................................... 27
6. GAS TYPE CHANGE ............................................................................................................ 27
6.1 Switching from gas in the second group to gas in the third group .......................................... 27
6.2 Switching from gas in the third group to gas in the second group .......................................... 28
7. OPERATING DEFECTS ........................................................................................................ 29
7.1 Preliminary tests .................................................................................................................... 29
7.2 Possible defects .................................................................................................................... 29
8. REPLACING PARTS ............................................................................................................. 31
8.1 Control equipment ................................................................................................................. 31
8.2 Fuses .................................................................................................................................... 31
8.3 Gas solenoid valves .............................................................................................................. 31
8.4 Differential pressure switch ................................................................................................... 32
8.5 Convection fan control thermostat ......................................................................................... 32
8.6 Safety limit thermostat ........................................................................................................... 32
8.7 Electrodes ............................................................................................................................. 33
8.8 Flue exhaust fan .................................................................................................................... 33
8.9 Convection fan ...................................................................................................................... 33
9. PERIODIC MAINTENANCE OPERATIONS .......................................................................... 34
9.1 User information .................................................................................................................... 34
9.2 Yearly inspection ................................................................................................................... 34
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SECTION 3 - OPERATING AND MAINTENANCE
INSTRUCTIONS FOR THE USER
10. START-UP
10.1 FIRST FIRING AND TESTING
WARNING! The first firing of the appliance and
the commissioning tests must be performed
by skilled technical personnel. Non-
compliance with this procedure will invalidate
the warranty conditions and release the
manufacturer from all responsibilities.
10.2 TESTS
Before operating the heater, make sure that the
installer has correctly carried out the installation
operations according to the regulations in force.
10.3 IGNITION
WARNING! Any operation on the appliance
not expressly described below must be
performed by skilled personnel.
10.3.1 Check that the gas on-off valves are open
and the electric power supply is on.
10.3.2 (The instructions to the control panel
functions which follow refer to fig. 35).
a) Turn the room thermostat knob (E) clockwise
to the maximum value.
b) Turn switch (A) upwards to the “ON” position
to start the ignition cycle. Make sure that the
red LED of the “Reset” button (B) is unlit.
If it is lit, this means that the burner’s control
equipment is in a lockout state. In this case
press the button to reset the control
equipment. The red LED will turn off and from
this moment the air heater startup cycle will
begin.
From the moment that the burner ignites, the
flame should be detected by the ionization
probe within the safety time, otherwise the
control equipment shuts down. This situation
is indicated by the red LED (B) lighting up.
This can easily take place with a new system
that still has air in its gas lines. In this case
wait approximately one minute and release
the unit by pressing the “Reset” button (D) to
start a new cycle. Repeat this operation until
the residual air has been bled off and ignition
takes place normally.
If the shutdown condition persists, this
generally indicates that there is a fault or
an operating defect. In this case it is
recommended to contact a specialized
technician.
The exchanger heating phase will begin after
the burner has been ignited (this is indicated
by the green LED (C)). The exchanger will
reach the rated operating temperature after
approximately three minutes. At this point a
thermostat will start the fan(s) for distributing
warm air in the room.
When the room has reached the desired tem-
perature, adjust the room thermostat by turning
the control dial slowly (counterclockwise) until
the burner turns off (indicated by the green led
C). From this point on the air heater will be
completely automatic and will maintain the
desired room temperature.
c) Set the most suitable ventilation for the room
by means of switch (F). Turning the switch
upwards will activate the minimum speed,
and turning it downwards will activate the
maximum speed.
10.4 SHUTDOWN
10.4.1 To turn off the air heater for a short period
of time, just use the room thermostat, just set the
switch (A) to the “OFF” position, without moving
the temperature regulation dial.
Fig. 34
CONTROL PANEL
E D
F A B C