Ferroli ATLAS D ECO COND Manual De Usuario página 42

Air damper adjustment
After loosening the screw 3, operating the screw 1, the combustion air is adjusted ac-
cording to the indications of the pointer 2. After adjustment, lock the screw 3.
Position of electrodes - baffle
After fitting the nozzle, check correct positioning of the electrodes and baffle, according
to the dimensions given below. It is advisable to check the dimensions after each oper-
ation on the head.
2÷3
2÷3
fig. 36- Position of electrodes - baffle
3.2 Commissioning
Checks to be made at first lighting, and after
B
all maintenance operations involving discon-
nection from the systems or an operation 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 fuel system.
• Check the pre-filling 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 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.
• Make sure the electrical system is properly connected and the earth system works
properly.
• Make sure there are no flammable liquids or materials in the immediate vicinity of
the boiler.
• Fit the pressure gauge and the vacuum gauge on the pump (remove after starting)
of the burner.
• open the gate valves along the diesel pipe
Start-up
P
P
fig. 37 - Starting
42
EN
2
3
MAX
4
AIR
2
ARIA
M
STOP
AIR
A 4
1 MIN
X
AIR 2 LUFT
STOP AIRE
1 M N
I
fig. 35
3
VE
G
VE
G
cod. 3541Q463 - Rev. 00 - 09/2021
ATLAS D ECO COND UNIT
A
When the thermostatic line closes, the burner motor starts turning together with the
pump: all the oil sucked is sent to the return. The burner blower and the ignition trans-
former are also working, therefore the following stages are carried out:
1
• firebox preventilation.
• prewash of a part of the oil circuit.
• preignition, with discharge between electrode tips.
B
At the end of prewash, the unit opens the electromagnetic valve: the oil reaches the noz-
ARIA
AIR
zle, where it is finely sprayed.
Its contact with the discharge between the electrode tips creates the flame.
LUFT
AIRE
The safety time begins simultaneously.
Unit cycle
6÷6,5
R-SB-W Thermostats/Pressure switches
OH OIl pre-heater
OW Operation enabling contact
M Burner motor
Z Ignition transformer
BV Electromagnetic valve
FR Photoresistance
A' Starting with pre-heater
A Starting without pre-heater
B Flame present
C Normal operation
D Adjustment stop (TA-TC)
t1 Pre-ventilation time
TSA Safety time
t3 Pre-ignition time
t3n Post-ignition time
tw Pre-heating time
Output signals from the unit
Necessary input signals
Checks during operation
• Ignite the appliance as described in sec. 1.3.
• Check that the fuel circuit and water systems are airtight.
• 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.
• Check the proper ignition of the boiler by performing various tests, turning it on and
off with the room thermostat or remote control.
• Check that the burner door and fume chamber are tight.
• Check that the burner works properly.
• Analyse the combustion (with the boiler unit stable) and check that the content of
CO in the fumes is between 11% and 12%.
2
• Check the parameters are programmed correctly and perform any required custom-
ization (compensation curve, power, temperatures, etc.).
3.3 Maintenance
Periodical check
To ensure correct operation of the unit over time, have qualified personnel carry out a
yearly check, providing for the following:
• The control and safety devices must function correctly.
• The fume exhaust circuit must be perfectly efficient.
• Check there are no obstructions or dents in the fuel supply and return pipes.
• Clean the filter of the fuel suction line.
• Measure the correct fuel consumption
• Clean the combustion head in the fuel outlet zone, on the swirl disc.
• Leave the burner running at full rate for approximately ten minutes, then analyse
the combustion, checking:
- All the elements specified in this manual are set correctly
- Temperatures of the fumes at the flue
- CO2 percentage content
• The air-fume end piece and ducts must be free of obstructions and leaks
• The burner and exchanger must be clean and free of deposits. For possible clean-
ing do not use chemical products or wire brushes.
t3n
tw t1
t3 TSA
fig. 38 - Unit cycle