Ferroli ATLAS D 30 Ki 100 UNIT Troubleshooting guide

3540I690
cod. 3540I690 — 02/2008 (Rev. 00)
ATLAS D Ki 100 UNIT
INSTRUCTIONS FOR USE, INSTALLATION AND MAINTENANCE
NÁVOD K OBSLUZE, INSTALACI A ÚDRŽBĚ
VEJLEDNING I BRUG, INSTALLATION OG VEDLIGEHOLDELSE
BRUKS-, INSTALLASJONS- OG VEDLIKEHOLDSVEILEDNING
INSTRUKCJA UZYCIA, INSTALACJI I KONSERWACJI
РУКОВОДСТВО ПО ЭКСПЛУАТАЦИИ, МОНТАЖУ ИТЕХОБСЛУЖИВАНИЮ
ІНСТРУКЦІЯ ЗЕКСПЛУАТАЦІЇ, МОНТАЖУ ТА ОБСЛУГОВУВАННЯ

ATLAS D Ki 100 UNIT
2GB
B
Declaration of conformity
Manufacturer: FERROLI S.p.A.
Address: Via Ritonda 78/a 37047 San Bonifacio VR Italy
declares that this unit complies with the following EU directives:
• Efficiency Directive 92/42
• Low Voltage Directive 73/23 (amended by 93/68)
• Electromagnetic Compatibility Directive 89/336 (amended by 93/68)
President and Legal Representative
Cav. del Lavoro
Dante Ferroli
BThis symbol indicates "Caution" and is placed next to all safety warnings. Strictly follow
these instructions in order to avoid danger and damage to persons, animals and things.
AThis symbols calls attention to a note or important notice.
cod. 3540I690 - 02/2008 (Rev. 00)
• Carefully read the warnings in this instruction book-
let since they provide important information on safe
installation, use and maintenance.
• This instruction booklet is an integral part of the
product and must be carefully kept by the user for fu-
ture reference.
• If the unit is sold or transferred to another owner or if
it is to be moved, always make sure that the booklet
accompanies the boiler so that it can be consulted
by the new owner and/or installer.
• Installation and maintenance must be carried out by
professionally qualified personnel, according to cur-
rent regulations and the manufacturer's instructions.
• Incorrect installation or poor maintenance can cause
damage or physical injury. The manufacturer de-
clines any responsibility for damage caused by er-
rors in installation and use or by failure to follow the
manufacturer's instructions.
• Before carrying out any cleaning or maintenance op-
eration, disconnect the unit from the electrical power
supply using the switch and/or the special cut-off de-
vices.
• In case the unit breaks down and/or functions poorly,
deactivate it, do not make any attempt to repair it or
directly intervene. Contact professionally qualified
personnel. Any repair/replacement of products must
only be carried out by qualified professional person-
nel using exclusively genuine parts. Failure to com-
ply with the above could affect the safety of the unit.
• Periodical maintenance carried out by qualified per-
sonnel is essential for guaranteeing good operation
of the unit.
• This unit must only be used for the purpose for which
it was designed. Any other use is considered im-
proper and therefore hazardous.
• After removing the packing, check the integrity of the
contents. Packing materials must not be left within
the reach of children as they are potentially hazard-
ous.
• In case of doubt do not use the unit, and contact the
supplier.
• The images shown in this manual are a simplified
representation of the product. In this representation
there may be slight, unimportant differences with the
supplied product.

ATLAS D Ki 100 UNIT
3
3540I690 cod. 3540I690 - 02/2008 (Rev. 00)
1 Operating instructions ............................................................................................................ 4
1.1 Introduction.............................................................................................................................................4
1.2 Control panel ..........................................................................................................................................4
1.3 Turning on and off ..................................................................................................................................5
1.4 Adjustments............................................................................................................................................7
2 Installation.............................................................................................................................. 11
2.1 General Instructions .............................................................................................................................11
2.2 Place of installation ..............................................................................................................................11
2.3 Plumbing connections ..........................................................................................................................11
2.4 Burner connection ................................................................................................................................12
2.5 Electrical connections...........................................................................................................................13
2.6 Connection to the flue ..........................................................................................................................14
3 Service and maintenance...................................................................................................... 15
3.1 Adjustments..........................................................................................................................................15
3.2 Commissioning.....................................................................................................................................18
3.3 Maintenance.........................................................................................................................................20
3.4 Troubleshooting....................................................................................................................................21
4 Technical data and characteristics ...................................................................................... 22
4.1 Dimensions, connections and main components .................................................................................22
4.2 Loss of head.........................................................................................................................................23
4.3 Technical data table .............................................................................................................................24
4.4 Wiring diagram .....................................................................................................................................25

ATLAS D Ki 100 UNIT
4GB
cod. 3540I690 - 02/2008 (Rev. 00)
1. Operating instructions
1.1 Introduction
Dear Customer,
Thank you for choosing a FERROLI boiler featuring advanced design, cutting-edge technology, high reliability and
quality construction. Please read this manual carefully since it provides important information on safe installation, use
and maintenance.
ATLAS D Ki 100 UNIT is a high efficiency heat generator for central heating and hot tap water production equipped
with a diesel-fuelled blown burner. The boiler shell consists of cast-iron elements, assembled with double cones and
steel stays placed over a DHW quick storage domestic hot water tank, made of AISI316L stainless steel, and protected
against corrosion by a magnesium anode. The control system is with microprocessor and digital interface with ad-
vanced temperature control functions.
1.2 Control panel
fig. 1 - Control panel
Key
1 = DHW temperature setting decrease button
2 = DHW temperature setting increase button
3 = Heating system temperature setting decrease
button
4 = Heating system temperature setting increase
button
5 = Display
6 = Summer / Winter mode selection button
7 = Economy / Comfort mode selection button
8 = Reset button
9 = Unit On / Off button
10 = "Sliding Temperature" menu button
11 = Set DHW temperature reached
12 = DHW symbol
13 = DHW operation
14 = DHW outlet temperature / setting
15 = Eco (Economy) or Comfort mode
16 = External sensor temperature (with optional ex-
ternal probe)
17 = Appears on connecting the external Probe or the
Remote Timer Control (optionals)
18 = Room temperature (with optional Remote Timer
Control)
19 = Burner On
20 = Antifreeze operation
21 = Heating system pressure
22 = Fault
23 = Heating delivery temperature / setting
24 = Heating symbol
25 = Heating operation
26 = Set heating delivery temperature reached
27 = Summer mode
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ecomfort
bar
5791021
8643
12 1411
13
15 16
17182021222325
2426
27
19

ATLAS D Ki 100 UNIT
5GB cod. 3540I690 - 02/2008 (Rev. 00)
Indication during operation
Heating
A heating demand (generated by the Room Thermostat or Remote Timer Control) is indicated by flashing of the hot air
above the radiator (details 24 and 25 - fig. 1).
The heating graduation marks (detail 26 - fig. 1) light up as the heating sensor temperature reaches the set value.
fig. 2
DHW (Comfort)
A DHW demand (generated by drawing domestic hot water) is indicated by flashing of the hot water under the tap (de-
tails 12 and 13 - fig. 1). Make sure the Comfort function (detail 15 - fig. 1) is activated
The DHW graduation marks (detail 11 - fig. 1) light up as the DHW sensor temperature reaches the set value.
fig. 3
Exclude hot water tank (economy)
Hot water tank temperature maintaining/heating can be excluded by the user. If excluded, domestic hot water will not
be delivered.
When hot water tank heating is activated (default setting), the COMFORT symbol (detail 15 - fig. 1) is activated on the
display, and when off, the ECO symbol (detail 15 - fig. 1) is activated on the display
The hot water tank can be deactivated by the user (ECO mode) by pressing the button (detail 7 - fig. 1). To ac-
tivate COMFORT mode, press the button (detail 7 - fig. 1) again.
1.3 Turning on and off
Boiler not electrically powered
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comfort
bar
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ATLAS D Ki 100 UNIT
6GB
cod. 3540I690 - 02/2008 (Rev. 00)
fig. 4 - Boiler not electrically powered
BThe antifreeze system does not work when the power and/or gas to the unit are turned off. To avoid damage
caused by freezing during long idle periods in winter, it is advisable to drain all water from the boiler, DHW
circuit and system; or drain just the DHW circuit and add a suitable antifreeze to the heating system, complying
with that prescribed in sec. 2.3.
Boiler lighting
• Open the fuel on-off valves.
• Switch on the power to the unit.
fig. 5 - Boiler lighting
• For the following 120 seconds the display will show FH which identifies the heating system air venting cycle.
• During the first 5 seconds the display will also show the card software release.
• When the message FH disappears, the boiler is ready to operate automatically whenever domestic hot water is
drawn or in case of a room thermostat demand.
Turning the boiler off
Press the button (detail 9 - fig. 1) for 1 second.
fig. 6 - Turning the boiler off
When the boiler is turned off, the electronic board is still powered.
Domestic hot water and heating operation are disabled. The antifreeze system remains activated.
To relight the boiler, press the button (detail 9 fig. 1) again for 1 second.
fig. 7
The boiler will be immediately ready to operate whenever domestic hot water is drawn or in case of a room thermostat
demand.
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ATLAS D Ki 100 UNIT
7GB cod. 3540I690 - 02/2008 (Rev. 00)
1.4 Adjustments
Summer/Winter changeover
Press the button (detail 6 - fig. 1) for 1 second.
fig. 8
The display activates the Summer symbol (detail 27 - fig. 1): the boiler will only deliver domestic hot water. The anti-
freeze system remains activated.
To deactivate Summer mode, press the button (detail 6 - fig. 1) again for 1 second.
Heating temperature setting
Operate the heating buttons (details 3 and 4 - fig. 1) to adjust the temperature from a min. of 30°C to a max.
of 90°C; it is advisable not to operate the boiler below 45°C.
fig. 9
Hot water temperature adjustment
Operate the DHW buttons (details 1 and 2 - fig. 1) to adjust the temperature from a min. of 10°C to a max.
of 65°C.
fig. 10
Room temperature adjustment (with optional room thermostat)
Using the room thermostat, set the temperature desired in the rooms. If the room thermostat is not installed the boiler
will keep the heating system at its setpoint temperature.
Room temperature adjustment (with optional remote timer control)
Using the remote timer control, set the temperature desired in the rooms. The boiler unit will set the system water ac-
cording to the required room temperature. For information on the remote timer control, please refer to its user's manual.
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ATLAS D Ki 100 UNIT
8GB
cod. 3540I690 - 02/2008 (Rev. 00)
Sliding Temperature
When the optional external probe is installed the control panel display (detail 5 - fig. 1) shows the actual outside tem-
perature read by the probe. The boiler control system operates with "Sliding Temperature”. In this mode, the tempera-
ture of the heating system is controlled according to the outside weather conditions, to ensure high comfort and energy
saving throughout the year. In particular, as the outside temperature increases the system delivery temperature de-
creases according to a specific "compensation curve”.
With Sliding Temperature adjustment, the temperature set with the heating buttons (details 3 and 4 - fig. 1)
becomes the maximum system delivery temperature. It is advisable to set the maximum value to allow system adjust-
ment throughout its useful operating range.
The boiler must be adjusted at the time of installation by qualified personnel. Adjustments can in any case be made by
the user to improve comfort.
Compensation curve and curve offset
Press the button (detail 10 - fig. 1) once to display the compensation curve (fig. 11), which can be modified with the
DHW buttons (details 1 and 2 - fig. 1).
Adjust the required curve from 1 to 10 according to the characteristic (fig. 13).
By setting the curve to 0, sliding temperature adjustment is disabled.
fig. 11 - Compensation curve
Press the heating buttons (details 3 and 4 - fig. 1) to access parallel curve offset (fig. 14), modifiable with the
DHW buttons (details 1 and 2 - fig. 1).
fig. 12 - Parallel curve offset

ATLAS D Ki 100 UNIT
9GB cod. 3540I690 - 02/2008 (Rev. 00)
Press the button (detail 10 - fig. 1) again to exit parallel curve adjustment mode.
If the room temperature is lower than the required value, it is advisable to set a higher order curve and vice versa. Pro-
ceed by increasing or decreasing in steps of one and check the result in the room.
fig. 13 - Compensation curves
fig. 14 - Example of parallel compensation curve shift
Adjustments from Remote Timer Control
AIf the Remote Timer Control (optional) is connected to the boiler, the above adjustments are managed accord-
ing to that given in table 1. Also, the control panel display (detail 5 - fig. 1) shows the actual room temperature
read by the Remote Timer Control.
Table. 1
Heating temperature adjustment Adjustment can be made from the Remote Timer Control menu and the boiler
control panel.
Domestic hot water temperature adjustment Adjustment can be made from the Remote Timer Control menu and the boiler
control panel.
Summer/Winter switchover Summer mode has priority over a possible Remote Timer Control heating
demand.
Eco/Comfort selection
On disabling DHW from the Remote Timer Control menu, the boiler selects
the Economy mode. In this condition, the button 7 - fig. 1 on the boiler panel
is disabled.
On enabling DHW from the Remote Timer Control menu, the boiler selects
the Comfort mode. In this condition it is possible select one of the two modes
with the button 7 - fig. 1 on the boiler panel.
Sliding Temperature Both the Remote Timer Control and the boiler card manage Sliding Tempera-
ture adjustment: of the two, the boiler card Sliding Temperature has priority.
20
30
40
50
60
70
80
90
85
20 10 0 -10 -20
1
2
3
4
5
68910 7
20
30
40
50
60
70
80
90
85
20 10 0 -10 -20
1
2
3
4
5
6
8910 7
20 10 0 -10 -20
20
30
40
50
60
70
80
90
85
1
2
3
4
568910 7
OFFSET = 20 OFFSET = 40

ATLAS D Ki 100 UNIT
10 GB
cod. 3540I690 - 02/2008 (Rev. 00)
Water system pressure adjustment
The filling pressure with system cold, read on the boiler water gauge, must be approx. 1.0 bar. If the system pressure
falls to values below minimum, the boiler card will activate fault F37 (fig. 15).
fig. 15 - Low system pressure fault
Operate the filling cock (detail 1 - fig. 16) and bring the system pressure to a value above 1.0 bar.
fig. 16 - Filling cock
AOnce the system pressure is restored, the boiler will activate the 120-second air venting cycle indicated on the
display by FH.
At the end of the operation always close the filling cock (detail 1 - fig. 16)
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1

ATLAS D Ki 100 UNIT
11GB cod. 3540I690 - 02/2008 (Rev. 00)
2. Installation
2.1 General Instructions
BOILER INSTALLATION MUST ONLY BE PERFORMED BY QUALIFIED PERSONNEL, IN ACCORDANCE WITH
ALL THE INSTRUCTIONS GIVEN IN THIS TECHNICAL MANUAL, THE PROVISIONS OF CURRENT LAW, THE PRE-
SCRIPTIONS OF NATIONAL AND LOCAL STANDARDS AND THE RULES OF PROPER WORKMANSHIP.
2.2 Place of installation
The boiler unit must be installed in a specific room with ventilation openings to the outside as prescribed by current reg-
ulations. If there are several burners or suction units that can work together in the same room, the ventilation openings
must be sized for simultaneous operation of all the units. The place of installation must be free of flammable materials
or objects, corrosive gases, powders or volatile substances that, conveyed by the burner fan, can obstruct the internal
lines of the burner or the combustion head. The room must be dry and not exposed to rain, snow or frost.
AIf the unit is enclosed in a cabinet or mounted alongside, a space must be provided for removing the casing
and for normal maintenance operations.
2.3 Plumbing connections
The heating capacity of the unit must be previously established by calculating the building's heat requirement according
to current regulations. The system must be provided with all the components for correct and regular operation. It is ad-
visable to install on-off valves between the boiler and heating system allowing the boiler to be isolated from the system
if necessary.
BThe safety valve outlet must be connected to a funnel or collection pipe to prevent water spurting onto the floor
in case of overpressure in the heating circuit. Otherwise, if the discharge valve cuts in and floods the room,
the boiler manufacturer cannot be held liable.
Do not use the water system pipes to earth electrical appliances.
Before installation, carefully wash all the pipes of the system to remove any residuals or impurities that could affect prop-
er operation of the unit.
Carry out the relevant connections according to the diagram in cap. 4 "Technical data and characteristics" and the sym-
bols given on the unit.
Water system characteristics
In the presence of water harder than 25° Fr (1°F = 10ppm CaCO3), use suitably treated water in order to avoid possible
scaling in the boiler. Treatment must not reduce the hardness to values below 15°F (Decree 236/88 for uses of water
intended for human consumption). Treatment of the water used is indispensable in case of very large systems or with
frequent introduction of replenishing water in the system.
BIf water softeners are installed at the boiler cold water inlet, make sure not to reduce the water hardness too
much, as this could cause early deterioration of the magnesium anode in the hot water tank.
Antifreeze system, antifreeze fluids, additives and inhibitors
The boiler is equipped with an antifreeze system that turns on the boiler in heating mode when the system delivery water
temperature falls under 6°C. The device will not come on if the electricity and/or gas supply to the unit are cut off. If it
becomes necessary, it is permissible to use antifreeze fluid, additives and inhibitors only if the manufacturer of these
fluids or additives guarantees they are suitable for this use and cause no damage to the heat exchanger or other com-
ponents and/or materials of the boiler unit and system. It is prohibited to use generic antifreeze fluid, additives or inhib-
itors that are not expressly suited for use in heating systems and compatible with the materials of the boiler unit and
system.

ATLAS D Ki 100 UNIT
12 GB
cod. 3540I690 - 02/2008 (Rev. 00)
2.4 Burner connection
The burner is equipped with hoses and a filter for connecting to the diesel supply line. Make the hoses come out of the
back and install the filter as shown in fig. 17.
fig. 17 - Fuel filter installation
The diesel supply circuit must be made according to one of the following diagrams, without exceeding the pipe lengths
(LMAX) given in the table.
fig. 18 - Supply by gravity
fig. 19 - Supply by suction

ATLAS D Ki 100 UNIT
13GB cod. 3540I690 - 02/2008 (Rev. 00)
fig. 20 - Siphon supply
fig. 21 - Ring supply
2.5 Electrical connections
Connection to the electrical grid
BThe unit's electrical safety is only guaranteed when correctly connected to an efficient earthing system exe-
cuted according to current safety standards. Have the efficiency and suitability of the earthing system checked
by professionally qualified personnel. The manufacturer is not responsible for any damage caused by failure
to earth the system. Also make sure that the electrical system is adequate for the maximum power absorbed
by the unit, as specified on the boiler dataplate.
The boiler is prewired and provided with a Y-cable and plug for connection to the electricity line. The connections to the
grid must be made with a permanent connection and equipped with a bipolar switch whose contacts have a minimum
opening of at least 3 mm, interposing fuses of max. 3A between the boiler and the line. It is important to respect the
polarities (LINE: brown wire / NEUTRAL: blue wire / EARTH: yellow-green wire) in making connections to the electrical
line. During installation or when changing the power cable, the earth wire must be left 2 cm longer than the others.
BThe user must never change the unit's power cable. If the cable gets damaged, switch off the unit and have it
changed solely by professionally qualified personnel. If changing the electric power cable, use solely “HAR
H05 VV-F” 3x0.75 mm2 cable with a maximum outside diameter of 8 mm.
Room thermostat (optional)
BIMPORTANT: THE ROOM THERMOSTAT MUST HAVE VOLTAGE-FREE CONTACTS. CONNECTING 230
V TO THE ROOM THERMOSTAT TERMINALS WILL PERMANENTLY DAMAGE THE ELECTRONIC
BOARD.
When connecting time controls or a timer, do not take the power supply for these devices from their breaking
contacts Their power supply must be by means of direct connection from the mains or with batteries, depend-
ing on the kind of device.

ATLAS D Ki 100 UNIT
14 GB
cod. 3540I690 - 02/2008 (Rev. 00)
Accessing the electrical terminal block
Undo the two screws “A” located on the top part of the control panel and remove the cover.
fig. 22 - Accessing the terminal board
2.6 Connection to the flue
The unit must be connected to a flue designed and built in compliance with current regulations. The pipe between the
boiler and flue must be made from material suitable for the purpose, i.e. heat and corrosion resistant. Ensure the seal
at the joints and insulate the entire pipe between boiler and flue, to prevent the formation of condensate.
A

ATLAS D Ki 100 UNIT
15GB cod. 3540I690 - 02/2008 (Rev. 00)
3. Service and maintenance
All adjustment, conversion, start-up and maintenance operations described below must only be carried out by Qualified Per-
sonnel (meeting the professional technical requirements prescribed by current regulations) such as those of the Local After-
Sales Technical Service.
FERROLI declines any liability for damage and/or injury caused by unqualified and unauthorised people tampering with the
unit.
3.1 Adjustments
Turning on TEST mode
Press the heating buttons (detail 3 and 4 - fig. 1) at the same time for 5 seconds to activate TEST mode.
The boiler unit will ignite irrespective of whether for heating or hot tap water.
The heating symbol (detail 24 - fig. 1) and DHW symbol (detail 12 - fig. 1) flash on the display.
fig. 23 - Operation in TEST mode
To deactivate TEST mode, repeat the activation sequence.
TEST mode anyhow turns off automatically after 15 minutes.
Burner adjustment
The burner is factory set as shown in table 2. It is possible to set the burner at a different power output by adjusting the
pump pressure, nozzle, head setting, or air setting as described in the following paragraphs. In any case, the new power
setting must come within the boiler's rated working range. After making any adjustments, use a combustion analyser to
check that the content of CO2% in the fumes is between 11% and 12%.
Table. 2 - Adjusting the burner
Model
boiler unit
Hot water
OUTPUT
Model
burner
Hot water
burner Nozzle Pressure heat
To adjusting
testa
To adjusting
AIR
8.0 kW kg / h US
Gall/h Angle Code Bar L mark
ATLAS D 30 K 100 UNIT 34.8 SUN 2.93 0.75 60° 35601330 10 22 10
ATLAS D 42 K 100 UNIT 38.7 SUN 3.25 0.85 60° 35601340 11 22 11
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ATLAS D Ki 100 UNIT
16 GB
cod. 3540I690 - 02/2008 (Rev. 00)
Oil nozzle flow-rate table
table 3 indicates the diesel flow rates (in kg/h) as the pump and nozzle pressure changes.
N.B. - The values given in the table are approximate since it is necessary to bear in mind that the nozzle deliveries may
vary by ± 5%. In addition, for burners with a pre-heater, the fuel flow rate decreases by approximately 10%.
Table. 3
Pump pressure adjustment
The pump pressure is factory set for optimal operation and should not normally be altered. However, if special needs
require setting a different pressure, after applying the pressure gauge and igniting the burner, turn the adjuster screw
"6" shown in fig. 24. It is anyhow recommended to keep within the range of 10 - 14 bar.
fig. 24 - Pump
1- Inlet (suction)
2- Return with internal by-pass screw
3- Outlet to the nozzle
4- Pressure gauge connection
5- Vacuum gauge connection
6- Adjustment screw
Pump pressure kg/cm2
NOZZLE
G.P.H. 8 9 10 11 12 13 14
0.40 1.36 1.44 1.52 1.59 1.67 1.73 1.80
0.50 1.70 1.80 1.90 1.99 2.08 2.17 2.25
0.60 2.04 2.16 2.28 2.39 2.50 2.60 2.70
0.65 2.21 2.34 2.47 2.59 2.71 2.82 2.92
0.75 2.55 2.70 2.85 2.99 3.12 3.25 3.37
0.85 2.89 3.06 3.23 3.39 3.54 3.68 3.82
1.00 3.40 3.61 3.80
Flow rate at the nozzle outlet in kg/h
m h2O
PV
1
2
3
6
5
4

ATLAS D Ki 100 UNIT
17GB cod. 3540I690 - 02/2008 (Rev. 00)
Head and air lock
Adjust the head and air flow rate according to the burner power as shown in fig. 25
Turn the head adjustment screw B (fig. 26) clockwise or anticlockwise until the mark cut into the rod A(fig. 26) coincides
with the pointer.
fig. 25 - SUN G6 R burner adjustments chart
APower
BAdjustment pointer
CDiesel flow rate
“L“ head (mm)
Air
To adjust the air delivery, turn the screw C(fig. 26) after loosening the nut D. After making the adjustment, tighten the
nut D.
fig. 26 - Burner adjustment
30
25
20
15
10
5
0
B
15.0 20.0 25.0 30.0 35.0 40.0 45.0 50.0 55.0 60.0
A (kW)
1 26 1 69 2 11 2 53 2 95 3 37 3 79 4 22 4 64 5 06
C (kg/h)

ATLAS D Ki 100 UNIT
18 GB
cod. 3540I690 - 02/2008 (Rev. 00)
Electrode - baffle position
After fitting the nozzle, check the electrodes and baffle are in the right positions, according to the distances shown be-
low. The distances should be checked after any work done on the head.
fig. 27 - Electrode - baffle position
3.2 Commissioning
BChecks to be made at first lighting, and after all maintenance operations that involved disconnecting 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 system 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
fig. 28 - Ignition
45.0°
6.5
3.5
3
1
L
VE
GP
VE
GP

ATLAS D Ki 100 UNIT
19GB cod. 3540I690 - 02/2008 (Rev. 00)
A
On closing of the thermostat line the burner motor starts turning together with the pump: all the oil drawn is sent to the
return. The burner fan and the ignition transformer are also working, therefore the following stages are carried out:
• firebox pre-ventilation.
• prewash of part of the oil circuit.
• preignition, with discharge between electrode tips.
B
At the end of prewash, the unit opens the solenoid valve: the oil reaches the nozzle, from which it is finely sprayed.
The contact with the discharge, between the electrode tips, causes the flame to form.
The safety time begins simultaneously.
Unit cycle
fig. 29 - Cycle of the unit
BV... Solenoid valve
OH Oil preheater
FS Photoresistance
R-SB-WThermostats/pressure switches
MBurner motor
OW Operation consent contact
ZIgnition transformer
t1 Pre-ventilation time
t3 Preignition time
t3n Postignition time
t4 Interval "BV1-BV2"
TSA Safety time
A’ Start with preheater
AStart without preheater
BFlame presence
CNormal operation
D"R" adjustment stop
Unit output signals
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 CO2in the fumes is between 11%
and 12%.
• Check the parameters are programmed correctly and perform any required customization (compensation curve,
power, temperatures, etc.).

ATLAS D Ki 100 UNIT
20 GB
cod. 3540I690 - 02/2008 (Rev. 00)
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 cleaning do not use chemical products
or wire brushes.
• The gas and water systems must be airtight.
• 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.
• Check the magnesium anode and replace it if necessary.
AThe boiler casing, control panel and aesthetic parts can be cleaned with a soft and damp cloth, if necessary
soaked in soapy water. Do not use any abrasive detergents 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.
Burner removal
• Remove the casing (B) by undoing the screw (A), thus making all the accessories accessible.
• Unscrew the nut (C) and position the burner in order to light the nozzle.
fig. 30 - Burner removal
A
C
B