ALPA 31 BS 60
24
EN
cod. 3541B530 - 01/2012 (Rev. 00)
3.2 System start-up
B
Checks to be made at first ignition, and after all maintenance operations that
involved disconnecting from the systems or an intervention 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. 4.4)
•
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
•
Ignite the appliance as described in sec. 1.3.
•
Check the airtightness of the fuel circuit and water systems.
•
Check the efficiency of the flue and air-fume ducts while the boiler is working.
•
Check that the water is circulating properly between the boiler and the systems.
•
Make sure that the gas valve modulates correctly in both the heating and hot water
production phases.
•
Check the proper ignition of the boiler by performing various tests, turning it on and
off with the room thermostat or remote control.
•
Make sure that the fuel consumption indicated on the meter corresponds to that giv-
en in the technical data table in sec. 4.4.
•
Make sure that with no call for heating the burner correctly ignites on opening a hot
water tap. Check that during heating operation, on opening a hot water tap, the heat-
ing circulator stops and there is a regular production of hot water.
•
Check the parameters are programmed correctly and perform any required custom-
ization (compensation curve, power, temperatures, etc.)
3.3 Maintenance
Periodical check
To ensure proper operation of the unit over time, have qualified personnel carry out a
yearly check, providing for the following:
•
The control and safety devices (gas valve, flowmeter, thermostats, etc.) must func-
tion correctly.
•
The fume exhaust circuit must be perfectly efficient.
(Sealed chamber boiler: fan, pressure switch, etc. - The sealed chamber must be
tight: seals, cable glands, etc.)
(Open chamber boiler: anti-backflow device, fume thermostat, etc.)
•
The air/fume terminal and ducts must be free of obstructions and leaks
•
The burner and exchanger must be clean and free of deposits. For cleaning do not
use chemical products or wire brushes.
•
The electrode must be free of scale and properly positioned.
•
The gas and water systems must be tight.
•
The water pressure in the cold water system must be approx. 1 bar; otherwise bring
it to that value.
•
The circulating pump must not be blocked.
•
The expansion tank must be filled.
•
The gas flowrate and pressure must match that given in the respective tables.
A
The boiler casing, control panel and aesthetic parts can be cleaned with a soft
damp cloth, if necessary soaked in soapy water. Do not use any abrasive de-
tergents and solvents.
Hot water tank
B
Periodically (at least once a year), check the wear of the magnesium anode.
Replace it if too worn.
Opening the front panel
To open the front panel, follow instructions offig. 27.
B
Before carrying out any operation inside the boiler, disconnect the power supply
and close the gas cock upstream.
fig. 27 - Front panel opening
3.4 Troubleshooting
Diagnostics
The boiler is equipped with an advanced self-diagnosis system. In case of a boiler fault,
the display will flash together with the fault symbol (detail 11 - fig. 1) indicating the fault
code.
There are faults that cause permanent shutdowns (marked with the letter “
A
”): to restore
operation, press the RESET button (detail 6 - fig. 1) for 1 second or use the RESET on
the optional remote timer control if installed; if the boiler fails to start, it is necessary to
eliminate the fault indicated by the operation LEDs.
Other faults marked with the letter “
F
” cause temporary shutdowns that are automatically
reset as soon as the value returns within the boiler's normal working range.
Table of faults
Table. 6 - List of faults
Fault
code
Fault
Possible cause
Cure
A01
No burner ignition
No gas
Check the regular gas flow to the boiler and
that the air has been eliminated from the
pipes
Ignition/detection electrode
fault
Check the wiring of the electrode and that it is
correctly positioned and free of any deposits
Faulty gas valve
Check the gas valve and replace it if neces-
sary
Ignition power too low
Adjust the ignition power
A02
Flame present signal
with burner off
Electrode fault
Check the ionisation electrode wiring
Card fault
Check the card
A03
Overtemperature protec-
tion activation
Heating sensor damaged
Check the correct positioning and operation
of the heating sensor
No water circulation in sys-
tem
Check the circulating pump
Air in the system
Vent the system
F05
Air pressure switch (fails
to close contacts within
20 sec. of fan activation)
Air pressure switch contact
open
Check the wiring
Faulty air pressure switch
wiring
Check the fan
Faulty baffle
Check the pressure switch
Flue not correctly sized or
obstructed
Replace the baffle
A06
No flame after the igni-
tion stage
Low pressure in gas system Check the gas pressure
Burner minimum pressure
setting
Check the pressures
F10
Delivery sensor 1 fault
Sensor damaged
Check the wiring or replace the sensor
Wiring shorted
Wiring disconnected
