Atlas D Eco Unit - Heat pump FERROLI - Free user manual and instructions

Product type	Diesel (oil) heat generator for central heating and domestic hot water production (tank option)
Brand	Ferroli
Model	Atlas D Eco Unit (versions 30 UNIT and 42 UNIT)
Dimensions (L x D x H)	630 x 590 x 850 mm (30 UNIT) / 730 x 690 x 850 mm (42 UNIT)
Empty weight	157 kg (30 UNIT) / 196 kg (42 UNIT)
Electrical supply	230 V / 50 Hz, power consumption 195 W
Nominal thermal output (heating)	25 kW (30 UNIT) / 37 kW (42 UNIT)
Useful efficiency at nominal output (high temperature regime)	88,2 % (30 UNIT) / 88,3 % (42 UNIT)
Maximum operating pressure (heating)	3 bar
Maximum flow temperature (heating)	100 °C
Expansion vessel capacity	10 litres, pre-charge 1 bar
Water capacity of heating circuit	19 litres (30 UNIT) / 24 litres (42 UNIT)
Burner type	Forced draught oil burner, factory preset
Main functions	Heating, DHW production (tank option), weather compensation (outdoor sensor optional), Summer/Winter modes, Eco/Comfort, adaptive temperature
Periodic maintenance	Annual check by a qualified professional: burner cleaning, heat exchanger, safety checks, pressure, tightness
User cleaning	Casing and control panel: soft damp cloth, no abrasive products
Safety devices	Frost protection, safety valve, temperature sensors, pressure switch, self-diagnostics with error codes
Spare parts and repairability	Use only genuine Ferroli spare parts; repairs reserved for qualified professionals
Protection rating	IP X0D
Seasonal energy efficiency class (heating)	B
Sound power level	62 dB(A)
Annual energy consumption	83 GJ (30 UNIT) / 123 GJ (42 UNIT)
Standards and certifications	CE marking, compliant with applicable directives; WEEE (Directive 2012/19/EU)

Frequently Asked Questions - Atlas D Eco Unit FERROLI

How to turn on the Ferroli Atlas D Eco Unit boiler?

Open the fuel shut-off valves, then turn on the appliance. The display shows 'FH' for 120 seconds (ventilation cycle). After this period, the boiler is ready to operate automatically as soon as there is a demand for heating or domestic hot water.

How to adjust the heating temperature?

Use the '+' and '-' buttons (ref. 3 and 4 on the panel) to set the heating flow temperature between 30 °C and 80 °C. It is recommended not to go below 45 °C for optimal operation.

How to adjust the domestic hot water temperature?

Press the '+' and '-' buttons (ref. 1 and 2) to set the temperature between 10 °C and 65 °C. The DHW function is only active with an optional external tank connected.

What does error code A01 mean?

Code A01 indicates a burner lockout. Possible causes: blocked pump, lack of fuel, dirty filters, incorrectly adjusted electrodes or blocked nozzle. Press the RESET button (ref. 8) to attempt a restart. If the error persists, contact a qualified professional.

How to activate Summer mode?

Press the 'Summer/Winter' button (ref. 6) for 1 second. The 'Summer' symbol (ref. 27) is displayed: the boiler only provides domestic hot water. To deactivate, press the same button again for 1 second.

What is the recommended water pressure in the system?

The cold fill pressure should be about 1.0 bar. If it drops below, error F37 appears. Fill the system via the filling valve until the pressure is restored. After filling, the boiler performs a 120-second purge cycle (display 'FH').

How to clean the boiler?

For internal cleaning (combustion chamber, heat exchanger, burner), call a qualified professional. The user can clean the casing with a soft damp cloth (soapy water). Never use abrasive products or solvents.

What to do in case of a prolonged power cut in winter?

The frost protection system is not active without power or gas supply. To avoid damage, completely drain the water from the boiler and system, or use a suitable antifreeze compatible with the materials. Refer to the manual for recommended products.

How to adjust the compensation curve (adaptive temperature)?

If an outdoor sensor is installed, press the 'mode' button (ref. 10) once. The display shows the current curve (1 to 10). Use the DHW +/- buttons to change the curve. A higher curve increases the flow temperature in cold weather. Adjust in increments of 1 and observe comfort.

Where to find the complete user manual?

The complete manual is available free in PDF format on the site notice-facile.com for the Ferroli Atlas D Eco Unit model. You can also request a translation by selecting your language and providing your email address.

USER MANUAL Atlas D Eco Unit FERROLI

Exterior view of a Ferroli appliance (no signage or text beyond brand name)

CE

fig. 3

fig. 5 - Accensione caldaia

fig. 7

fig. 8

fig. 9

Technical line drawing of a mechanical device with control panel and display panel (no text or symbols)

fig. 19

graph TD
    A["Central Component"] --> B["Monitor 1"]
    A --> C["Monitor 2"]
    A --> D["Monitor 3"]
    B --> E["Arrow pointing to Pie Chart"]
    C --> F["Arrow pointing to Cross-Section"]
    D --> G["Arrow pointing to Circle"]
    H["Circle Icon"] --> I["Icon: Triangle with Inverter"]

fig. 20

Technical line drawing of a mechanical assembly with hoses and a central component (no text or symbols)

fig. 29 - Pompa ITALPUMP

fig. 30 - Pompa DANFOSS

fig. 31

fig. 32

fig. 36

fig. 37

fig. 39

Technical line drawing of a mechanical device with control panel and display screen (no text or symbols)

fig. 19

graph TD
    A["Central Circle"] --> B["Monitor 1"]
    A --> C["Monitor 2"]
    A --> D["Monitor 3"]
    B --> E["Arrow pointing to 'A'"]
    C --> F["Arrow pointing to 'B'"]
    D --> G["Arrow pointing to 'C'"]
    H["Circle Icon"] --> I["Icon: Triangle with Inverter"]

fig. 20

Technical line drawing of a mechanical assembly with hoses and a central component (no text or symbols)

fig. 28 - Modo TEST

fig. 29- Bomba ITALPUMP

fig. 30- Bomba DANFOSS

fig. 32

fig. 36

fig. 37

Close-up of a Wilo industrial control unit with a red rotary knob and black arrow pointing to it (no readable text or symbols beyond branding)

fig. 38

fig. 39

EN

1. GENERAL INFORMATION

• Read the warnings in this instruction booklet carefully since they provide important information on safe installation, use and maintenance.
• This instruction booklet is an integral and essential part of the product and must be kept with care by the user for future reference.
• If the unit is sold or transferred to another owner or if it is to be moved, always make sure the booklet stays with 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 current regulations and the manufacturer's instructions.
• Incorrect installation or inadequate maintenance can result in damage or injury. The manufacturer declines any liability for damage caused by errors in installation and use or by failure to follow the instructions provided.
• Before carrying out any cleaning or maintenance operation, disconnect the unit from the power supply using the system switch and/or the special cut-off devices.
• In case of a fault and/or poor operation, deactivate the unit and do not try to repair it or directly intervene. Contact professionally qualified personnel. Any repair/replacement of the products must only be carried out by qualified personnel using genuine parts. Failure to comply with the above can compromise the safety of the unit.
• Periodic maintenance performed by qualified personnel is essential in order to ensure proper operation of the unit.
• This unit must only be used for its intended purpose. Any other use is deemed improper and therefore hazardous.

• After unpacking, check the good condition of the contents. The packing materials are potentially hazardous and must not be left within the reach of children.

• The unit can be used by children aged at least 8 years and by persons with reduced physical, sensory or mental capabilities, or lacking experience or the necessary knowledge, only if under supervision or they have received instructions on its safe use and the related risks. Children must not play with the unit. Cleaning and maintenance intended to be done by the user can be carried out by children aged at least 8 years only if under supervision.

• In case of doubt, do not use the unit. Contact the supplier.
• The unit and its accessories must be appropriately disposed of in compliance with current regulations.
• The images given in this manual are a simplified representation of the product. In this representation there may be slight and insignificant differences with respect to the product supplied.

THE CE MARKING CERTIFIES THAT THE PRODUCTS MEET THE ESSENTIAL REQUIREMENTS OF

THE RELEVANT DIRECTIVES IN FORCE. THE DECLARATION OF CONFORMITY MAY BE REQUESTED FROM THE MANUFACTURER.

This symbol, which is used on the product, packaging or documents, means that at the end of its useful life, this product must not be collected, recycled or disposed of together with domestic waste.

Improper management of electric or electronic waste can lead to the leakage of hazardous substances contained in the product. For the purpose of preventing damage to health or the environment, users are kindly asked to separate this equipment from other types of waste and to ask for it to be dealt with by the municipal waste service or dealer under the conditions and according to the methods set down in national and international laws transposing the Directive 2012/19/EU.

2. OPERATING INSTRUCTIONS

2.1 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 ECO UNIT is a high-efficiency heat generator for domestic hot water production (optional) and heating, equipped with a blown oil burner. The boiler shell consists of cast-iron elements, assembled with double cones and steel stays. The control system is with microprocessor and digital interface with advanced temperature control functions.

The boiler is arranged for connection to an external storage tank for hot water production (optional). In this manual all the functions relevant to domestic hot water production are only active with the optional hot water tank connected as indicated in sec. 3.3

2.2 Control panel

Panel

fig. 1 - Control panel

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 mode

14 = DHW outlet temperature / setting

15 = Eco (Economy) or Comfort mode

16 = External sensor temperature (with optional external 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 mode

26 = Set heating delivery temperature reached

27 = Summer mode

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

DHWs (Comfort)

A DHW demand (generated by drawing domestic hot water) is indicated by flashing of the hot water under the tap (details 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 eco/comfortfig. 1 button (detail 7 - ). To activate the COMFORT mode, press the eco/comfort button (detail 7 - fig. 1) again.

2.3 Lighting and turning off

Boiler not electrically powered

fig. 4 - Boiler not electrically powered

The 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. 3.3.

Boiler lighting

- Open the fuel on-off valves.

- Switch on the power to the unit.

fig. 5 - Boiler lighting

- For the next 120 seconds "FH" will be displayed in the upper part of the display, which identifies the heating system air venting cycle.

- During the first 5 seconds the software version of the card will also be shown in the lower part of the display.

- 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 on/off button (detail 9 - fig. 1) for 1 second.

fig. 6 - Turning the boiler off

When the boiler is turned off, the PCB is still powered.

Domestic hot water and heating are disabled. The antifreeze system remains activated. To relight the boiler, press the on/off 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.

2.4 Adjustments

Summer/Winter Switchover

Press the summer/winter 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 antifreeze system remains activated.

To deactivate the Summer mode, press the summer/winter button (part. 6 - fig. 1) again for 1 second.

Heating temperature setting

Use the heating buttons (details 3 and 4 - fig. 1) to adjust the temperature from a min. of 30^ C to a max. of 80^ C.

In any case it is advisable not to operate the boiler below 45°C.

fig. 9

DHW temperature adjustment

Use 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 according to the required room temperature. For information on the remote timer control, please refer to its user's manual.

Sliding temperature

When the optional external probe is installed the control panel display (detail 5 - fig. 1) shows the actual outside temperature read by the probe. The boiler control system operates with "Sliding Temperature". In this mode, the temperature of the heating system is adjusted according the outside weather conditions, in order to ensure high comfort and energy saving throughout the year. In particular, as the outside temperature increases, the system delivery temperature is decreased 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 a maximum value to allow system adjustment throughout its useful operating range.

The boiler must be adjusted at the time of installation by qualified personnel. Possible adjustments can in any case be made by the user to improve comfort.

Compensation curve and curve offset

Press the mode button (detail 10 - fig. 1) once to display the actual 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 - Curve parallel offset

Press the mode 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. Proceed by increasing or decreasing in steps of one and check the result in the room.

fig. 13 - Compensation curves

fig. 14 - Example of compensation parallel curve offset

Adjustments from Remote Timer Control

If the Remote Timer Control (optional) is connected to the boiler, the above adjustments are managed according to that given in table 1. Also, the control panel display (detail 5 - fig. 1) shows the actual room temperature detected by the Remote Timer Control.

Table. 1

Heating temperature setting	Adjustment can be made from the Remote Timer Control menu and the boiler control panel.
DHW 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, thebutton 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 thebutton 7 - fig. 1 on the boiler panel.
Sliding Temperature	Both the Remote Timer Control and the boiler card manage Sliding Temperature adjustment: of the two, the Sliding Temperature of the boiler card has priority.

Water system pressure adjustment

The filling pressure with system cold, read on the display, 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

Once the system pressure is restored, the boiler will activate the 120-second air venting cycle indicated on the display by FH.

3. INSTALLATION

3.1 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 PRESCRIPTIONS OF NATIONAL AND LOCAL STANDARDS AND THE RULES OF PROPER WORKMANSHIP.

3.2 Place of installation

The boiler unit must be installed in a specific room with ventilation openings to the outside as prescribed by current regulations. 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.

If the unit is enclosed in a cabinet or mounted alongside, a space must be provided for removing the casing and for normal maintenance operations.

3.3 Plumbing connections

Important

The heating capacity of the unit must be previously established by calculating the building's heat requirement according to the current regulations. The system must be provided with all the components for correct and regular operation. It is advisable to install shutoff valves between the boiler and heating system allowing the boiler to be isolated from the system if necessary.

The 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, flush all the pipes of the system thoroughly to remove any residuals or impurities that could affect proper operation of the unit.

Carry out the relevant connections according to the diagram in cap. 5 and the symbols given on the unit.

High efficiency circulating pump

Circulating pump adjustment with boiler connected to an external hot water storage tank

For proper operation of the boiler ATLAS D ECO UNIT with it connected to an external hot water storage tank, the speed selector (see fig. 16) must be set to position III.

fig. 16

Circulating pump adjustment without a connection to an external hot water storage tank

The factory setting is suitable for all installations; however a different operation strategy can be set, depending on the characteristics of the system.

Setting

Fixed speed

fig. 18

- Setting Dp-v Proportional head (fig. 17)

The circulating pump head will be automatically reduced with the decrease in flow rate required by the system. This setting is optimum for systems with radiators (2 pipes or single pipe) and/or thermostatic valves.

The strong points are the reduction in power consumption with the decrease in system demand and reduction of noise in radiators and/or thermostatic valves. The operating range is from min. (1) to max. (7).

- Setting Fixed speed (fig. 18)

The circulating pump does not modulate its power. The operating principle is that of conventional 3-speed circulating pumps (with a reduction in power consumption compared to them). The operating range goes from speed 1 (I) to speed 3 (III).

High-efficiency circulating pump (model PARA)

Control buttons and signaling LEDs

fig. 19

For a correct result of the "Thermal quantity balance" calculation (see section 11 THERMAL QUANTITY BALANCE (METERIN), the circulating pump must be set to "Constant speed") and to the position. To set this adjustment, press button "A" several times until the LEDs shown in the figure below light up.

graph TD
    A["Computer monitor 1"] --> B["Monitor 1"]
    C["Computer monitor 2"] --> D["Monitor 2"]
    E["Computer monitor 3"] --> F["Monitor 3"]
    G["Circle icon A"] --> H["Stacked Circle"]
    I["Arrow pointing right"] --> J["Arrow pointing left"]
    style A fill:#f9f,stroke:#333
    style C fill:#f9f,stroke:#333
    style E fill:#f9f,stroke:#333
    style G fill:#f9f,stroke:#333
    style I fill:#f9f,stroke:#333
    style J fill:#f9f,stroke:#333

However, a different operating strategy can be set, depending on the characteristics of the system.

- Setting A-v Proportional Head

The circulating pump head will be automatically reduced with the decrease in flow rate required by the system.

The strengths are reduced power consumption as the system demand decreases, and reduced noise. The operating range is from minimum to maximum.

- Setting Δ-c Constant Head

The circulating pump head is constant as the flow rate required by the system varies.

- Setting Fixed speed

The circulating pump does not modulate its power. The operating principle is that of conventional 3-speed circulating pumps (with a reduction in power consumption compared to them). The operating range is from speed 1 (.) to speed 3 (.).

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.

⚠️ If 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 components and/or materials of the boiler unit and system. It is prohibited to use generic antifreeze fluid, additives or inhibitors that are not expressly suited for use in heating systems and compatible with the materials of the boiler unit and system.

Connection to a storage tank for domestic hot water production

The unit's electronic board is arranged for managing an external storage tank for domestic hot water production. Make the plumbing connections according to the diagram fig. 21. Carry out: electrical connections as shown in the wiring diagram in cap. 5.4. A probe FERROL must be used.

Carry out the access procedure described below.

"Service Menu"

The card Service Menu is accessed by pressing the Reset button for 10 seconds.

Press the Heating buttons to select "tS", "In", "Hi" or "rE". "tS" means Transparent Parameters Menu, "In" Information Menu, "Hi" History Menu, and "rE" History Menu Reset. Select "tS" and press the Reset button.

The card has 20 transparent parameters also modifiable from Remote Control (Service Menu).

Press the Heating buttons to scroll the list of parameters in increasing or decreasing order. Press the DHW buttons to modify the value of a parameter: the change will be automatically saved.

Change parameter P02 of the "Transparent Parameters Menu" to 6. Press the Reset button to return to the Service Menu. Press the Reset button for 10 seconds to exit to the card Service Menu.

graph TD
    A["Input 10"] --> B["Reactor Unit"]
    C["Input 11"] --> B
    B --> D["95 Component"]
    D --> E["Reactor Unit"]
    E --> F["Output 8"]
    E --> G["Output 9"]

fig. 21 - Diagram of connection to external hot water tank

Key

8 Domestic hot water outlet
9 Domestic cold water inlet
10 System delivery
11 System return
95 3-way valve - 2 wires with spring return (not provided)

3.4 Burner connection

The burner is equipped with flexible pipes and a filter for connection to the oil feed line. Run the flexible pipes out of the back and install the filter as indicated in fig. 22.

Technical line drawing of a mechanical assembly with hoses and a central component (no text or symbols)

fig. 22 - Fuel filter installation

The oil feed circuit must be made according to one of the following diagrams, without exceeding the pipe lengths (LMAX) given in the table.

fig. 23 - Gravity feed

fig. 24 - Suction feed

fig. 25 - Siphon feed

fig. 26 - Ring feed

3.5 Electrical connections

Connection to the electrical grid

The unit's electrical safety is only guaranteed when correctly connected to an efficient earthing system executed 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 data-plate.

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.

The 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)

IMPORTANT: 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, depending on the kind of device.

Accessing the electrical terminal block

Undo the two screws "A" located on the top part of the control panel and remove the cover.

fig. 27 - Accessing the terminal board

3.6 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.

4. SERVICE AND MAINTENANCE

All adjustment, conversion, commissioning and maintenance operations described below must only be carried out by Qualified Personnel (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 persons tampering with the unit.

4.1 Adjustments

TEST mode activation

Press the heating buttons (details 3 and 4 - fig. 1) together for 5 seconds to activate the TEST mode. The boiler switches on irrespective of the system or DHW request.

The heating symbol (detail 24 - fig. 1) and DHW symbol (detail 12 - fig. 1) flash on the display.

fig. 28 - TEST mode

To deactivate the Test mode, repeat the activation sequence.

The TEST mode is automatically disabled in any case after 15 minutes.

Burner adjustment

The burner is factory-set as given in table 2. The burner can be set to a different output by acting on the pump pressure, nozzle, head adjustment, and air adjustment as per the following paragraphs. In any case, the new adjusted output must fall within the boiler's nominal operating range. After making any adjustments, using a combustion analyser check that the CO_2 content in the fumes is between 11% and 12% .

Nozzle flow rate table for oil

table 2 gives the oil flow rates (in kg/h) according to the change in pump pressure and nozzles.

N.B. - The values given below are only approximate, since nozzle flow rates can vary by ± 5%. Also, with burners having a preheater, the fuel flow rate decreases by about 10%.

Table. 2

	Pump pressure (bar)
NOZZLE G.P.H.	9		1	0	1	1
0.40	1.40 1.47	1.54 1.61 1.68	1.75
	16.60 17.43	18.26 19.09	19.92 20.75
0.50	1.65 1.73	1.81 1.89 1.97	2.05
	19.57 20.51	21.50 22.42	23.36 24.31
0.60	2.01 2.23	2.32 2.42 2.52	2.64
	23.83 26.44	27.51 28.70	29.88 31.31
0.65	2.25 2.40	2.63 2.74 2.80	2.91
	26.68 28.46	31.19 32.49	33.21 34.51
0.75	2.65 2.80	2.95 3.07 3.20	3.33
	31.43 33.21	34.99 36.41	37.95 39.49
0.85	3.10 3.27	3.45 3.60 3.75	3.90
	36.76 38.78	40.92 42.69	44.47 46.25
1.00	3.50 3.67	3.85 4.02 4.20
	41.51 43.52	45.66 47.67	48.72 51.95
1.25	4.40 4.61	4.82 5.03 5.25	5.46
	52.18 54.67	57.16 59.65	62.26 64.75
1.50	5.30 5.55	5.80 6.05 6.30	6.55
	62.85 65.82	68.78 71.75	74.72 77.68
1.75	6.18 6.46	6.75 7.06 7.38	7.96
	73.29 76.61	80.05 83.73	87.53 91.20
Flow rate at nozzle outlet in kg/h

Pump pressure adjustment

The pump is factory-set to 12 bar. Use an oil bath gauge to check the pressure. The pressure can be adjusted between 11 and 14 bar.

fig. 29- Pump ITALPUMP

fig. 30- Pump DANFOSS

1. Suction ∅1/4"
2. Return ∅1/4"
3. Oil delivery ∅1/8"
4. Pressure adjustment
5. Pressure gauge connection ∅1/8"
6. Vacuum gauge connection ∅1/8"

Combustion head adjustment

The head is adjusted by means of the screw 1, according to the indications of the pointer

1. 2

fig. 31

Air damper adjustment

After loosening the screw 3, operating the screw 1, the combustion air is adjusted according to the indications of the pointer 2. After adjustment, lock the screw 3.

fig. 32

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 operation on the head.

fig. 33- Position of electrodes - baffle

4.2 Commissioning

Checks to be done at first lighting, and after all maintenance operations that involved 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 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

Lighting

graph TD
    A["Configuration A"] --> P1["Pump"]
    P1 --> V1["VE"]
    V1 --> G1["G"]
    G1 --> V2["Current Source"]
    B["Configuration B"] --> P2["Pump"]
    P2 --> V2
    V2 --> G2["G"]
    G2 --> V3["Current Source"]
    V1 --> V4["Power Supply"]
    V2 --> V5["Power Supply"]
    V3 --> V6["Power Supply"]

fig. 34 - 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 transformer are also working, therefore the following stages are carried out:

• firebox prevention.
• 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 nozzle, where it is finely sprayed.

Its contact with the discharge between the electrode tips creates the flame.

The safety time begins simultaneously.

Unit cycle

fig. 35 - 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

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_2 in the fumes is between 11% and 12% .
• Check the parameters are programmed correctly and perform any required customization (compensation curve, power, temperatures, etc.).

4.3 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.

The 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.

Accessing the electrode and nozzle

- Disconnect the transformer electrode cables and remove the photoresistance 1, and the union 2 connecting the oil pipe to line 3 of the nozzle. Loosen the screws 4 and pull out the nozzle-baffle-electrode flange assembly.

fig. 36

- Undo the screw 5 to remove the baffle and screw 6 to remove the electrodes. Proper cleaning of the nozzle is obtained by removing the filter and cleaning the slots and spraying hole with petrol, rinsing it with fuel oil. When reassembling everything, pay attention to the correct positioning of the electrodes-baffle.

fig. 37

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 automatically reset as soon as the value returns within the boiler's normal working range.

ATTENTION

From software version 23, an additional feature has been introduced to facilitate burner calibration, i.e. flame flashing on the display to indicate that the burner is on but with indication of non-optimal flame.

For the various software versions, the meanings of the symbols shown on the display can be found in the table 3.

Table. 3- Flame symbol indications

	Indication on the display and meaning
Software Version	Flame Off Flame On Steady		Flame Flashing
≤ 22	Burner off Burner on		-
≥ 23	Burner off	Burner on and indication of stable flame	Burner on with indication of NOT optimal flame

Table. 4 - List of faults

Fault code	Fault Possible cause	Cure
A01	Burner block	Pump blocked Replace
		Faulty electric motor Replace
		Faulty oil valve Replace
		No fuel in tank, or water on bottom Refill with fuel or suck the water
		Oil line feed valves closed	Open
		Dirty filters (line-pump-nozzle)	Clean
		Pump unprimed	Prime and find the cause of unpriming
		Ignition electrodes not properly adjusted, or dirty	Adjust or clean them
		Nozzle clogged, dirty or deformed	Replace
		Unsuitable head and shutter adjustments	Adjust
		Faulty electrodes or earthed	Replace
		Faulty ignition transformer	Replace
		Faulty electrode wires or earthed	Replace
		Electrode wires deformed by high temperature	Replace and protect
		Faulty valve or transformer electrical connections	Check
		Broken pump-motor joint	Replace
		Pump inlet connected to return pipe	Correct the connection
		Faulty photoresistance	Replace
		Dirty photoresistance	Clean the photoresistance
A02	Flame present signal with burner off	Photoresistance short circuit	Replace the photoresistance
		Extraneous light strikes the photoresistance	Eliminate the light source
A03	Overtemperature protection activation	Heating sensor damaged	Check the correct positioning and operation of the heating sensor
		No water circulation in the system	Check the circulating pump (See table 4)
		Air in the system	Vent the system
A04	Card parameter fault W	long card parameter setting	Check the card parameter and modify it if necessary
F07	Preheater fault (the contact does not close in 120 seconds)	Wiring disconnected Check the wiring
F09	Card parameter fault W	long card parameter setting	Check the card parameter and modify it if necessary
F10	Delivery sensor 1 fault	Sensor damaged	Check the wiring or replace the sensor
		Wiring shorted
		Wiring disconnected
F11	DHW sensor fault	Sensor damaged	Check the wiring or replace the sensor
		Wiring shorted
		Wiring disconnected
F12	Card parameter fault W	long card parameter setting	Check the card parameter and modify it if necessary
F14	Delivery sensor 2 fault	Sensor damaged	Check the wiring or replace the sensor
		Wiring shorted
		Wiring disconnected
F16	Card parameter fault W	long card parameter setting	Check the card parameter and modify it if necessary
F34	Supply voltage under 170V.	Electric mains trouble	Check the electrical system
F35	Faulty mains frequency	Electric mains trouble	Check the electrical system
F37	Incorrect system water pressure	Pressure too low	Fill the system
		Sensor damaged	Check the sensor
F39	External probe fault	Probe damaged or wiring shorted	Check the wiring or replace the sensor
		Probe disconnected after activating the sliding temperature	Reconnect the external sensor or disable the sliding temperature
F40	Incorrect system water pressure	Pressure too high	Check the system
			Check the safety valve
			Check the expansion tank
A41	Sensor positioning	Delivery sensor not inserted in boiler shell	Check the correct positioning and operation of the heating sensor
F42	Heating sensor fault	Sensor damaged	Replace the sensor
F47	System water pressure sensor fault	Wiring disconnected Check the wiring

Circulating pump diagnostics

Some faults linked to the circulating pump are signalled by the LED located around the speed selector (fig. 38 - fig. 39).

fig. 38

Table. 5 - Circulating pump LED indications

	OffCirculating pump on STANDBY
	Green ONCirculating pump Working
	Green FlashingAir venting cycle
	Green/Red alternatingCirculating pump blocked due to external causes:- Overvoltage (>270V)- Insufficient voltage (<160V)- Motor overload
	Red FlashingCirculating pump blocked due to internal causes:- Motor blocked- Damaged electronics

Circulating pump diagnostics (model PARA)

Some faults linked to the circulating pump are signaled by the LED (fig. 39).

fig. 39

LED Fault Cause Cure
On with red light	Fault Blocked rotor		Activate manual restart or contact Customer Service
	Contact/winding Faulty winding
Flashing with red light	Under/overvoltage Supply side voltage too low/high		Check the mains voltage and conditions of use. Request Customer Service
	Excessive module temperature	Inside of module too hot
	Short circuit Motor current too high
Flashing with red/green light	Turbine operation	The hydraulic system of pumps is fed but the pump does not have mains voltage	Check the mains voltage, the water flow/pressure as well as the environmental conditions
	Dry running Air in pump
	Overload	The motor turns with difficulty. Pump operation not in accordance with specifications (e.g. high module temperature). The speed is lower than in normal operation.

5. TECHNICAL DATA AND CHARACTERISTICS

5.1 Main components, dimensions and connections

fig. 40- Main components, dimensions and connections

fig. 41

10 System delivery
11 System return
14 Heating safety valve
32 Heating circulating pump
36 Automatic air vent
56 Expansion tank
246 Pressure transducer
275 Drain
278 Double sensor (Safety + heating)
295 Burner

Table. 6

	A B a4
ATLAS D ECO 30 UNIT	630 590 ∅	120 ÷ 130
ATLAS D ECO 42 UNIT	730 690 ∅	120 ÷ 130

5.2 Diagrams
Circulating pumps Head/Pressure loss
- Circulating pump head with setting at "fixed speed".

H [m H2O]

A Boiler pressure losses
1 - 2 - 3 Circulating pump speed
- Circulating pump head with setting at "proportional head".

A Boiler pressure losses

5.3 Technical data table

Data Unit		ATLAS D ECO 30 UNIT ATLAS D ECO 42 UNIT
Number of elements no. 3 4
Max. heating capacity kW 26.6 39.4 (Q)
Min. heating capacity kW 21.0 21.0 (Q)
Max. heat output in heating kW 25 37 (P)
Min. heat output in heating	kW	20 20 (P)
Efficiency Pmax (80-60°C)	%	93.9 95.0
Efficiency 30%	%	98.2 97.4
Max. working pressure in heating	bar	3 3 (PMS)
Min. working pressure in heating	bar	0.8	0.8
Max. heating temperature	°C	100	100	(tmax)
Heating water content	litres	19 24
Heating expansion tank capacity	litres	10 10
Heating expansion tank prefilling pressure	bar	1 1
Protection rating	IP	XOD XOD
Power supply voltage	V/Hz	230/50	230/50
Electrical power input	W	195	195
Empty weight	kg	157	196
Combustion chamber length	mm	350	450
Combustion chamber diameter	mm	300	300
Pressure losses, fume side	mbar	0.11	0.35

ErP product fiche

MODEL: ATLAS D ECO 30 UNIT - (OJHL3YWA)

Trademark: FERROLI
Condensing boiler: NO
Low-temperature boiler (**): YES
B1 Boiler: NO
Combination heater: NO
Cogeneration space heater: NO
Item	Symbol	Unit Value
Seasonal space heating energy efficiency class (from A+++ to D)			B
Rated heat output	Pn	kW	25
Seasonal space heating energy efficiency	_s	%	86
Useful heat out put
Useful heat output at rated heat output and high-temperature regime (*)	P4	kW	25,0
Useful heat output at 30% of rated heat output and low-temperature regime (***)	P1	kW	7,8
Useful efficiency
Useful efficiency at rated heat output and high-temperature regime (*)	_4	%	88,2
Useful efficiency at 30% of rated heat output and low-temperature regime (***)	_1	%	92,2
Auxiliary electricity consumption
At full load	elmax	kW	0,150
At part load	elmin	kW	0,069
In standby mode	PSB	kW	0,003
Other items
Standby heat loss	Pstby	kW	0,105
Ignition burner power consumption	Pign	kW	0,000
Annual energy consumption	QHE	GJ	83
Sound power level	LWA	dB	62
Emissions of nitrogen oxides	NOx	mg/kWh	95

(*) High-temperature regime means 60°C return temperature at heater inlet and 80°C feed temperature at heater outlet.
[**] Low temperature means for condensing boilers 30°C, for low-temperature boilers 37°C and for other heaters 50°C return temperature (at heater inlet).

ErP product fiche

MODEL: ATLAS D ECO 42 UNIT - (0JHL4YWA)

Trademark: FERROLI
Condensing boiler: NO
Low-temperature boiler (**): YES
B1 Boiler: NO
Combination heater: NO
Cogeneration space heater: NO
Item	Symbol	Unit Value
Seasonal space heating energy efficiency class (from A+++ to D)			B
Rated heat output	Pn	kW	37
Seasonal space heating energy efficiency	_s	%	86
Useful heat out put
Useful heat output at rated heat output and high-temperature regime (*)	P4	kW	37,1
Useful heat output at 30% of rated heat output and low-temperature regime (***)	P1	kW	11,5
Useful efficiency
Useful efficiency at rated heat output and high-temperature regime (*)	_4	%	88,3
Useful efficiency at 30% of rated heat output and low-temperature regime (***)	_1	%	91,5
Auxiliary electricity consumption
At full load	elmax	kW	0,150
At part load	elmin	kW	0,068
In standby mode	PSB	kW	0,003
Other items
Standby heat loss	Pstby	kW	0,125
Ignition burner power consumption	Pign	kW	0,000
Annual energy consumption	QHE	GJ	123
Sound power level	LWA	dB	62
Emissions of nitrogen oxides	NOx	mg/kWh	92

( ^* ) High-temperature regime means 60°C return temperature at heater inlet and 80°C feed temperature at heater outlet.
(**) Low temperature means for condensing boilers 30°C, for low-temperature boilers 37°C and for other heaters 50°C return temperature (at heater inlet).

5.4 Wiring diagram

fig. 45 - Wiring diagram

32 Heating circulating pump
42 DHW temperature probe (optional)
72 Room thermostat (optional)
95 Diverter valve (optional)
- Powered (230 Vac) = Heating position
- Not powered = DHW position
138 External probe (optional)
139 Remote timer control (optional)
246 Pressure transducer
278 Double sensor (Safety + Heating)
TR Ignition transformer
FR Photoresistance
MB Burner motor
VE Electromagnetic valve

FR

1. CONSIGNES GÉNÉRALES

15 = Indication mode Eco (Economy) ou Confort

21 = Indication "pression installation de chauffage"

22 = Indication Anomalie

24 = Symbole chauffage

fig. 2

fig. 3

fig. 7

fig. 8

fig. 9

fig. 19

Technical line drawing of a mechanical assembly with hoses and a central component (no text or symbols)

fig. 22 - Installation filtre combustible

fig. 29- Pompe ITALPUMP

fig. 30- Pompe DANFOSS

fig. 32

fig. 36

fig. 37

4.4 Dépannage

Diagnostic

fig. 39

MODÈLE: ATLAS D ECO 30 UNIT - (OJHL3YWA)

MODÈLE: ATLAS D ECO 42 UNIT - (0JHL4YWA)

1. ALGEMENE WAARSCHUWINGEN

12 = Symbol warm sanitair water

15 = Aanduiding modus Eco (Economy) of Comfort

24 = Symbol verwarming

Sanitair water (Comfort)

fig. 3

Uitschakeling boiler (economy)

fig. 5 - Aanzetten verwarmingsketel

fig. 6 - Uitschakelen verwarmingsketel

fig. 8

fig. 16

fig. 19

Technical line drawing of a mechanical assembly with hoses and a central component (no text or symbols)

fig. 22 - Installatie brandstofffilter

fig. 29- Pomp ITALPUMP

fig. 30- Pomp DANFOSS

fig. 32

fig. 36

fig. 37

Diagram of an electrical switch device with a magnified view showing a green circle and a black arrow pointing to it (no text or symbols present)

fig. 39

24 = Symbol ogrzewania

wygląd 2

wygląd 7

wygląd 8

wygląd 9

Technical line drawing of a mechanical assembly with hoses and a central component (no text or symbols)

wygląd32

wygląd 3 6

wygląd 3 7

wygląd 3 9

EIK. 2

EIK. 3

EIK. 8

εικ. 9

εικ. 10

OFFSET = 40

εικ. 1 9

Technical line drawing of a mechanical assembly with no visible text or symbols

εικ. 3 1

Ρύθμιση τάμπερ αέρα

εικ. 3 2

EIK. 3 6

εικ. 3 7

εικ. 3 9