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ATLAS D ECO 56 UNIT
Pump pressure adjustment
The pump is factory-set to 12 bar. Use an oil bath gauge to check the pressure. The pres-
sure can be adjusted between 11 and 14 bar.
3
5
2
fig. 24- Pump ITALPUMP
5
4
2
fig. 25- Pump DANFOSS
1.
Suction Ø1/4"
2.
Return Ø1/4"
3.
Oil delivery Ø1/8"
4.
Pressure adjustment
5.
Pressure gauge connection Ø1/8"
6.
Vacuum gauge connection Ø1/8"
Combustion head adjustment
The head is adjusted by means of the screw 1, according to the indications of the pointer
2.
1
2
3
4
6
1
3
6
1
fig. 26
cod. 3541Q961 - Rev. 00 - 09/2019
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. 28- Position of electrodes - baffle
4.2 Commissioning
B
Checks to be done at first lighting, and after all maintenance operations that in-
volved 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 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
Lighting
P
P
fig. 29 - Starting
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:
•
firebox preventilation.
•
prewash of a part of the oil circuit.
•
preignition, with discharge between electrode tips.
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. 27
3
VE
G
VE
G
EN
1
ARIA
AIR
LUFT
AIRE
6÷6,5
33
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