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4.2 Start-up
B
Checks to be made at first lighting, and after all maintenance operations that in-
volved 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 seal of the fuel system.
•
Check correct prefilling of the expansion tank.
•
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 valve on the boiler and any air valves on
the system.
•
Make sure there are no water leaks in the system, domestic hot water circuits, con-
nections or boiler.
•
Check correct connection of the electrical system and efficiency of the earthing system
•
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.
•
Check the seal of the fuel circuit and water systems.
•
Check the efficiency of the flue and air-fume ducts during boiler operation.
•
Make sure the water is circulating properly between the boiler and systems.
•
Check correct boiler lighting 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. 5.3.
•
Ensure the seal of the fumebox and burner door.
•
Make sure the burner works properly. This check must be made with the special in-
struments, following the manufacturer's instructions.
•
Check correct programming of the parameters and carry out any required customi-
sation (compensation curve, power, temperatures, etc.).
4.3 Maintenance
Periodical check
To ensure proper operation of the unit over time, have qualified personnel carry out a
yearly inspection, providing for the following checks:
•
The control and safety devices must work properly.
•
The fume exhaust circuit must be perfectly efficient.
•
Check there are no obstructions or dents in the fuel supply and return pipes.
•
Clean the fuel suction line filter.
•
Measure the correct fuel consumption
•
Clean the combustion head in the fuel outlet zone, on the swirl disc.
•
Leave the burner on at full capacity for about ten minutes, then analyze the combus-
tion, checking:
-Correct calibration of all the elements specified in this manual
-Temperatures of the fumes at the flue
-CO2 percentage content
•
The fume ducts must be free of obstructions and leaks
•
The burner and exchanger must be clean and free of deposits. For possible cleaning
do not use chemical products or wire brushes.
•
The gas and water systems must be tight.
•
The water pressure in the system when cold must be approx. 1 bar; otherwise bring
it to that value.
•
The circulating pump must not be blocked.
•
The expansion tank must be filled.
•
Check the magnesium anode and replace it if necessary.
The boiler casing, control panel and aesthetic parts can be cleaned with a soft
A
and damp cloth, if necessary soaked in soapy water. Do not use abrasive de-
tergents and solvents.
Boiler cleaning
1.
Disconnect the power supply to the boiler.
2.
Remove the front top and bottom panel.
3.
Open the door by undoing the knobs.
4.
Clean the inside of the boiler and the entire path of exhaust fumes, using a tube
brush or compressed air.
5.
Then close the door, securing it with the knob.
To clean the burner, refer to the Manufacturer's instructions.
14
EN
4.4 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 22 - 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 8 - fig. 1) for 1 second or use the RESET on
the remote timer control (optional) if installed; if the boiler does not restart it is necessary
to eliminate the fault indicated in the operation LEDs.
Other faults cause temporary shutdowns (marked with the letter "F") which are automat-
ically reset as soon as the value returns within the boiler's normal working range.
Table. 2 - List of faults
Fault
Fault
code
Burner block
(RESET OCCURS
A01
ONLY ON THE
BURNER)
A02
Card parameter fault
Overtemperature protec-
A03
tion activation
A04
Card parameter fault
F07
Wiring fault
F09
Card parameter fault
F10
Delivery sensor 1 fault
F11
DHW sensor fault
F12
Card parameter fault
F13
Wiring fault
F14
Delivery sensor 2 fault
F16
Card parameter fault
Supply voltage under
F34
170V.
F35
Faulty mains frequency
Incorrect system water
F37
pressure
F39
External probe fault
Incorrect system water
F40
pressure
A41
Sensor positioning
F42
Heating sensor fault
System water pressure
F47
sensor fault
cod. 3541Q691 - Rev. 00 - 12/2019
ATLAS EVO
Possible cause
Cure
Refer to the burner manual
Wrong card parameter set-
Check the card parameter and modify it if
ting
necessary
Check the correct positioning and operation
Heating sensor damaged
of the heating sensor
No water circulation in the
Check the circulating pump
system
Air in the system
Vent the system
Wrong card parameter set-
Check the card parameter and modify it if
ting
necessary
Connector X5 not connected Check the wiring
Wrong card parameter set-
Check the card parameter and modify it if
ting
necessary
Sensor damaged
Wiring shorted
Check the wiring or replace the sensor
Wiring disconnected
Sensor damaged
Wiring shorted
Check the wiring or replace the sensor
Wiring disconnected
Wrong card parameter set-
Check the card parameter and modify it if
ting
necessary
Connector X12 not con-
Check the wiring
nected
Sensor damaged
Wiring shorted
Check the wiring or replace the sensor
Wiring disconnected
Wrong card parameter set-
Check the card parameter and modify it if
ting
necessary
Electric mains trouble
Check the electrical system
Electric mains trouble
Check the electrical system
Pressure too low
Fill the system
Sensor damaged
Check the sensor
Probe damaged or wiring
Check the wiring or replace the sensor
shorted
Probe disconnected after
Reconnect the external probe or disable the
activating the sliding tem-
sliding temperature
perature
Check the system
Pressure too high
Check the safety valve
Check the expansion tank
Delivery sensor not inserted
Check the correct positioning and operation
in boiler shell
of the heating sensor
Sensor damaged
Replace the sensor
Wiring disconnected
Check the wiring
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