Ferroli ATLAS D 37 K 130 UNIT Instrucciones De Uso, Instalación Y Mantenimiento página 45

ATLAS D 37 K 130 UNIT
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
A
P
B
P
fig. 32 - 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.
B
At the end of prewash, the unit opens the electromagnetic valve: the oil reaches the noz-
zle, where it is finely sprayed.
Its contact with the discharge between the electrode tips creates the flame.
The safety time begins simultaneously.
Unit cycle
A
R
SB
W
M
t1
Z
t3
BV
FR
fig. 33 - Unit cycle
R-SB-W Thermostats/Pressure switches
M Burner motor
Z Ignition transformer
BV Electromagnetic valve
FR Photoresistance
A' Beginning of ignition with pre-heater
A Beginning of ignition 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
VE
G
VE
G
B C
t3n
TSA
cod. 3541I110 - Rev. 02 - 10/2016
t3n Post-ignition time
tw Preheating time
Output signals from the unit
Necessary input signals
Checks during operation
• Ignite the appliance as described in sec. 2.3.
• 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.).
4.3 Maintenance
Periodical check
To ensure proper operation of the unit, have it checked yearly by qualified personnel,
providing for the following:
• The control and safety devices must function correctly.
• The fume exhaust circuit must be perfectly efficient.
• Make sure there are no obstructions or dents in the fuel supply and return pipes.
• Clean the fuel intake line filter.
• Check correct fuel consumption
• Clean the combustion head in the fuel outlet zone, on the turbulence disc.
• Leave the burner operating at max. for about ten minutes, then analyse the combus-
tion, checking:
- Correct setting of all the elements specified in this manual
- Fume temperatures at the flue
- CO2 percentage content
• The 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.
• The fuel 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 any abrasive
detergents and solvents.
Burner disassembly
• Remove the casing (B) by undoing the screw (A), thus making all the accessories
accessible.
• Undo the nut (C) and position the burner in order to access the nozzle.
C
D
fig. 34 - Burner disassembly
EN
A
B
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