Atlas D Eco Si Unit - Boiler FERROLI - Free user manual and instructions

USER MANUAL Atlas D Eco Si Unit FERROLI

cod. 35410544 - Rev. 00 - 12/2021

Exterior view of a Ferroti brand refrigerator (no signage or text beyond branding)

CE

-1+ 0F 38°C 12bar -1+ on off on off mode resφ

fig. 4

-1+ FH 10 -1+ on off re set co cent on off m pole

fig. 6 - Accensione caldaia

-1+ 0F eco 80°C 12bar on off reset re set

fig. 10

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

4m. MAX P

Technical diagram of a mechanical device with numbered components labeled 1 through 6

fig. 27 - Pompa ITALPUMP

Technical diagram of a mechanical device with numbered components and pressure gauges labeled 1 through 6.

fig. 28 - Pompa DANFOSS

Technical diagram of a mechanical device with numbered components and directional arrows indicating flow or movement.

fig. 29

Diagram showing air conditioner unit with labeled control knobs and indicator lights, including MAX, AIR, and ARIA/AIR controls.

fig. 30

Technical diagram of a mechanical assembly with numbered components for identification

fig. 34

Technical diagram of a mechanical device with numbered components labeled 5 and 6

fig. 35

Diagram showing a mechanical device with labeled components and an inset circle highlighting a green circular component with arrows.

fig. 37

-1+ 62°C eco 12bar on off reset cool control mode

fig. 3

Confort

-1+ FH 10 -1+ on off reset mode

-1+ OFF on off res st ecp cm/ct mode

-1+ 0F 9CO 48°C 12 bar on off on set

fig. 8

-1+ -0F 48°C eco 12pt on off reset

fig. 9

-1+ 0F eco 80°C L2bar on off reset

fig. 10

30 -11°C 0F atc OK SOUT ON ON Reset

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

Technical diagram of a mechanical device with labeled control panel and indicator lights, including a magnified view of its internal components.

fig. 18

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

4m. MAX P

-1+ 50 eco 80 12 bar -1 eco com but on off mode reset

fig. 26 - Modo TEST

Technical diagram of a mechanical device with numbered components labeled 1 through 6

fig. 27- Bomba ITALPUMP

Technical diagram of a mechanical device with numbered components and pressure gauges labeled 1 through 6.

fig. 28- Bomba DANFOSS

Technical diagram of a device with labeled parts, showing internal components and directional indicators.

fig. 29

Technical diagram showing air conditioning unit with labeled control knobs and indicator lights

fig. 30

Technical diagram of a mechanical device with numbered components for identification

fig. 34

Technical diagram of a mechanical device with numbered components labeled 5 and 6

fig. 35

Diagram showing a motor control unit with a green indicator light and a circular diagram containing symbols like a green circle, black arrow, and a triangle.

fig. 37

- 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.

This 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.

This symbols calls attention to a note or important notice.

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 SI UNIT is a high-efficiency heat generator for heating and domestic hot water production, 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.

2.2 Control panel

Panel

12 1411 19 15 66 7 13 ecomfort -88°C 27 bar on off eco comfort mode reset 8 26 24 3 25 23 4 22 21 20 18 17 6 8

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.

-1+ 53°C 70°C 900 12 bar on off reset on on on on on on on on on on on on on on on on on on on on on on on on on on on on on on on on on on on on on on on on on on on on on on on on on on On

fig. 2

Domestic hot water (DHW)

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).

-1+ 62°C eco 12bar -1+ ecp cm/gt on off mode reset

fig. 3

Comfort

A Comfort demand (reinstatement of temperature inside the boiler) is indicated by flashing of the COMFORT symbol (details 15 and 13 - fig. 1)

-1+ 0F 38°C 12 bar -1+ 607 comfort on off mode reset

fig. 4

2.3 Lighting and turning off

Boiler not electrically powered

- + - + ecp contet on off mode res et

fig. 5 - 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.

-1+ FH 10 -1+ on off mode reset

fig. 6 - 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.

-1 + OFF cos confl m mode on off ros et

fig. 7 - 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.

-1+ -0F 48°C 12bar eco on off on set cpm 6 d m pde

fig. 8

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.

-1+ -0F 48°C eco 12pH on off reset

fig. 9

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 Summer mode, press the Summer/Winter button (detail 6 - fig. 1) again for 1 second.

Heating temperature adjustment

Use the heating buttons (details 3 and 4 - fig. 1) to vary the temperature between a minimum of 30^ C to a maximum of 80^ C.

It is advisable not to operate the boiler below 45°C.

-1+ 0F eco 80°C L2bar on off reset re set

fig. 10

DHW temperature adjustment

Use the DHW buttons (details 1 and 2 - fig. 1) to adjust the temperature from a min. of 50°C to a max. of 75°C.

55°C eco 48°C l2bar on off co m/5v1 mode res et

fig. 11

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.

ECO/COMFORT selection

The unit has a function that ensures a high domestic hot water delivery speed and maximum comfort for the user. When the device is activated (COMFORT mode), the water contained in the boiler is kept hot, therefore ensuring immediate availability of hot water on opening the tap, without waiting times.

The device can be deactivated by the user (ECO mode) by pressing the eco/comfort button (detail 7 - fig. 1). To activate the COMFORT mode, press the eco/comfort button (detail 7 - fig. 1) again.

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. 12), 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. 14).

By setting the curve to 0, sliding temperature adjustment is disabled.

-1+ 08 CU -11°C otc -11°C osc osc

fig. 12 - Compensation curve

Press the heating buttons (details 3 and 4 - fig. 1) to access parallel curve offset (fig. 15), modifiable with the DHW buttons (details 1 and 2 - fig. 1).

30 -11°C 0F atc +/-

fig. 13 - 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. 14 - Compensation curves

fig. 15 - 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 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.
Summer/Winter Switchover	Summer mode has priority over a 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 boiler card Sliding Temperature has priority.

Hydraulic system pressure adjustment

The filling pressure with system cold, read on the boiler hydrometer, must be approx. 1.0 bar. If the system pressure falls below the minimum value, the boiler card will activate fault F37 (fig. 16).

F37 ①

fig. 16- Insufficient system pressure fault - Filling cock

Operating the filling cock (Detail 1 - fig. 16), bring the system pressure to a value above 1.0 bar.

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

At the end of the operation, always close the filling cock (detail 1 - fig. 16)

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

For proper operation of the boiler ATLAS D ECO SI UNIT, the speed selector (see fig. 17) must be set to position III.

Fig. 17 1 Min. 4 I II 7 III

High-efficiency circulating pump (model PARA)

Control buttons and signaling LEDs

fig. 18

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["Input Image"] --> B["Monitor 1"]
    A --> C["Monitor 2"]
    A --> D["Monitor 3"]
    B --> E["Output Arrow"]
    C --> E
    D --> E
    E --> F["Feedback Loop"]
    F --> G["Output Segments"]
    style A fill:#f9f,stroke:#333
    style B fill:#ccf,stroke:#333
    style C fill:#ccf,stroke:#333
    style D fill:#ccf,stroke:#333
    style G fill:#dfd,stroke:#333

fig. 19

Characteristics of the water system

In the presence of water harder than 25^ Fr ( 1^ F = 10ppm CaCO _3 ), 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.

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.

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. 20.

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

fig. 20 - 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.

H 4m. MAX H L MAX (m) H (m) Øi 8 mm. Øi 10 mm. 0.5 10 20 1.0 20 40 1.5 40 80 2.0 60 100

fig. 21 - Gravity feed

H L MAX (m) H (m) Øi 8 mm. Øi 10 mm. 0.0 25 60 0.5 21 50 1.0 18 44 1.5 15 38 2.0 12 32 2.5 10 26 3.0 8 20 3.5 6 16

fig. 22 - Suction feed

4m. MAX H H (m) L MAX (m) Øi 8 mm. Øi 10 mm. 0.0 25 60 0.5 21 50 1.0 18 44 1.5 15 38 2.0 12 32 2.5 10 26 3.0 8 20 3.5 6 16

fig. 23 - Siphon feed

4m. MAX P

fig. 24 - 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 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.

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 PERMA-NENTLY 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.

Technical diagram showing a mechanical assembly with labeled components A and a spring mechanism inside a housing.

fig. 25 - 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.

-1 + 50 9co 80 12 bar on off r os et

fig. 26 - 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 GPH.	8 9 10	11 12 13 14
0.40	1.32 1.40	1.47 1.54 1.61	1.68 1.75
	15.66 16	60 17.43 18.26	19.09 19.92	20.75
0.50	1.57 1.65	1.73 1.81 1.89	1.97 2.05
	18.62 19.57	20.51 21.50	22.42 23.36	24.31
0.60	1.93 2.01	2.23 2.32 2.42	2.52 2.64
	22.89 23.83	26.44 27.51	28.70 29.88	31.31
0.65	2.12 2.25	2.40 2.63 2.74	2.80 2.91
	25.14 26.68	28.46 31.19	32.49 33.21	34.51
0.75	2.50 2.65	2.80 2.95 3.07	3.20 3.33
	29.65 31.43	33.21 34.99	36.41 37.95	39.49
0.85	2.92 3.10	3.27 3.45 3.60	3.75 3.90
	34.63 36.76	38.78 40.92	42.69 44.47	46.25
1.00	3.30 3.50	3.67 3.85 4.02	4.20
	39.13 41.51	43.52 45.66	47.67 48.72	51.95
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.

Technical diagram of a mechanical device with numbered components labeled 1 through 6

fig. 27- Pump ITALPUMP

Technical diagram of a mechanical component with numbered parts and pressure gauges labeled 1 through 6.

fig. 28- 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 2.

Technical diagram of a mechanical device with numbered components and directional arrows indicating movement or flow.

fig. 29

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.

Diagram showing air conditioning system components with labeled parts and control knobs

fig. 30

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.

2÷3 2÷3 3 6+6.5

fig. 31- 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["Power Source"] --> P1["Pump"]
    P1 --> V1["VE Generator"]
    V1 --> G1["Generator"]
    G1 --> Output["Output"]
    B["Power Source"] --> P2["Pump"]
    P2 --> V2["VE Generator"]
    V2 --> G2["Generator"]
    G2 --> Output
    P1 -->|Downward Arrow| P2
    P2 -->|Upward Arrow| P1

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 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

R A B C D SB W M t3n Z t1 t3 TSA 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

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.

Technical diagram of a mechanical assembly with numbered components for identification

fig. 34

- 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.

Technical diagram of a mechanical device with numbered components labeled 5 and 6

fig. 35

4.4 Troubleshooting

Diagnostics

The boiler has 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 5)
		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	Card parameter fault W	long card parameter setting	Check the card parameter and modify it if necessary
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 vessel
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

Some faults linked to the circulating pump are signalled by the LED located around the speed selector (fig. 36 - fig. 37).

wilo

fig. 36

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. 37).

Diagram showing a device with labeled components and an inset circle highlighting a green circle with arrows pointing to a square containing a triangle symbol.

fig. 37

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

500 36 246 278 95 194 38 74 32 295

fig. 38- Front view

65 14 Ø120-130 78 10 8 11 9 63 309 639 210 98 210 290 50 145 850

fig. 39 - Rear view

630 (ATLAS D ECO 30 SI UNIT) 730 (ATLAS D ECO 42 SI UNIT) 56 10 8 246 95 194 38 74 32 10 9 255 fig. 40- Side view

Key to figures
10 = System delivery
11 = System return
14 = Safety valve
32 = Heating circulating pump
36 = automatic air vent
38 = Flow switch
56 = Expansion tank
74 = System filling cock
95 = Divverter valve
194 = DHW exchanger
209 = DHW outlet
210 = Cold water inlet
246 = Pressure transducer
255 = System water drain
278 = Double sensor (Safety + heating)
295 = Burner

5.2 Pressure loss

Circulating pumps Head/Pressure loss

A = Boiler pressure loss

1 -2 - 3 = Circulating pump speed

H [m H₂O]

fig. 41 - Pressure losses

5.3 Technical data table

Model ATLAS D ECO 30 SI UNIT ATLAS D ECO 42 SI 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 kW 25.0 37.0 (P)
Min. heat output kW 20.0 20.0 (P)
Efficiency Pmax (80-60°C) % 93.9 94.0
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	liters 20		25
Heating expansion vessel capacity	liters 10		10
Heating expansion vessel prefilling pressure	bar 1 1
Max. working pressure in DHW	bar 9 9 (PMW)
Min. working pressure in DHW	bar 0.3		0.3
DHW flow rate Dt 25°C	l/min 14.3 21.2
DHW flow rate Dt 30°C	l/min 11.9		17.7
Protection rating	IP XOD XOD
Power supply voltage	V/Hz 230/50		230/50
Electrical power input	W 200		200
Electrical power input in DHW	W 200		200
Empty weight	kg 160		200
Combustion chamber length	mm 350		450
Combustion chamber diameter	mm 300		300
Pressure loss on fume side	mbar 0.11		0.35

ErP product fiche

MODEL: ATLAS D ECO 30 SI UNIT - (OLHC3YWA)

Trademark: FERROLI
Condensing boiler: NO
Low-temperature boiler (**): YES
B1 Boiler: NO
Combination heater: YES
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 output
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
For combination heaters
Declared load profile			XL
Water heating energy efficiency class (from A+ to F)			B
Daily electricity consumption	Qelec	kWh	0,212
Annual electricity consumption	AEC	kWh	45
Water heating energy efficiency	_wh	%	75
Daily fuel consumption	Qfuel	kWh	24,263
Annual fuel consumption	AFC	GJ	19

(*) 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 SI UNIT - (OLHC4YWA)

Trademark: FERROLI
Condensing boiler: NO
Low-temperature boiler (**): YES
B1 Boiler: NO
Combination heater: YES
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 output
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	0,127
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
For combination heaters
Declared load profile			XXL
Water heating energy efficiency class (from A+ to F)			B
Daily electricity consumption	Qelec	kWh	0,200
Annual electricity consumption	AEC	kWh	42
Water heating energy efficiency	_wh	%	77
Daily fuel consumption	Qfuel	kWh	29,426
Annual fuel consumption	AFC	GJ	25

(*) 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

230V 50Hz L N 230V 50Hz 139 72 138 38 95 32 TR VE MB 4 1 1 8 1 1 6 4 1 5 1 6 1 4 3 1 2 1 3 4 5 6 1 X5 2 3 4 5 1 X3 2 3 4 5 1 X1 1 2 12 X7 OUT+5V GND DBM06H FR X6 X8 246

fig. 42 - Wiring diagram
32 Heating circulating pump
38 Flow switch
72 Room thermostat (optional)
95 Diverter valve
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

-1+ OF 38°C 12bar -1+ on off mode reset

fig. 4

- | + - + - coff on off mode res ct

-1+ FH 10 -1+ on off mode reset

-1+ 0F eco 80 bar -1 on off reset

fig. 10

fig. 14 - Courbes de compensation

graph TD
    A["Computer monitor with icon"] --> B["Graph chart"]
    B --> C["Graph chart with arc icon"]
    C --> D["Computer monitor with arrow pointing to next step"]
    D --> E["Arrow pointing right"]
    E --> F["Step 19: Initial circle labeled 'A'"]
    F --> G["Bottom row of circles"]
    G --> H["Arrow pointing right"]
    style A fill:#f9f,stroke:#333
    style B fill:#ccf,stroke:#333
    style C fill:#ccf,stroke:#333
    style D fill:#ccf,stroke:#333
    style E fill:#cfc,stroke:#333
    style F fill:#fcc,stroke:#333
    style G fill:#ffc,stroke:#333
    style H fill:#ffc,stroke:#333

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

fig. 20 - Installation filtre combustible

4m. MAX P

-1+ 50 eco 80 12 bar on off 6.02 comfort mopo r reset

Technical diagram of a mechanical device with numbered components labeled 1 through 6

fig. 27- Pompe ITALPUMP

Technical diagram of a mechanical device with numbered components and pressure gauges labeled 1 through 6.

fig. 28- Pompe DANFOSS

Technical diagram of a mechanical device with numbered components and directional arrows indicating flow or movement.

fig. 29

Diagram showing air conditioner unit with labeled control knobs and fan controls, including zoomed-in view of the air stop set.

fig. 30

graph TD
    A["Component A"] --> P1["P"]
    P1 --> V1["VE"]
    V1 --> G1["G"]
    B["Component B"] --> P2["P"]
    P2 --> V2["VE"]
    V2 --> G2["G"]
    P1 -->|Downward Arrow| P2
    P2 -->|Upward Arrow| P1
    V1 -->|Upward Arrow| V2
    G1 -->|Downward Arrow| G2

fig. 32 - Allumage

T

Technical diagram of a mechanical assembly with numbered components for identification

fig. 34

Technical diagram of a mechanical device with numbered components labeled 5 and 6

fig. 35

4.4 Dépannage

Diagnostic

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. 36

Tableau 5 - Indications led circulateur

Diagram showing a mechanical device with labeled components and an inset circle highlighting a green circular symbol with arrows.

fig. 37

11 = Retour installation

255 = Vidange eau installation

fig. 41 - Pertes de charge

1. ALGEMENE WAARSCHUWINGEN

12 = Symbol warm sanitair water

15 = Aanduiding modus Eco (Economy) of Comfort

24 = Symbol verwarming

-1+ 60n eco 62°C 12bar eco comfort on off re 30 f

fig. 3

Comfort

-1+ -0F 38°C 12bar -1+ on off on off on set

fig. 4

- + - + on off reset on off on pow

-1 + OFF α con on on off mod set

-1+ 0F eco 80°C 12bar on off reset

fig. 10

graph TD
    A["Data Input"] --> B["Monitor 1"]
    A --> C["Monitor 2"]
    A --> D["Monitor 3"]
    B --> E["Arrow to Pie Chart"]
    C --> F["Arrow to Circle"]
    D --> G["Arrow to Arrow"]

fig. 19

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

fig. 20 - Installatie brandstofffilter

4m. MAX P

Technical diagram of a mechanical device with numbered components labeled 1 through 6

fig. 27- Pomp ITALPUMP

Technical diagram of a mechanical device with numbered components and pressure gauges labeled 1 through 6.

fig. 28- Pomp DANFOSS

Technical diagram of a mechanical device with numbered components and directional arrows indicating movement or flow.

fig. 29

Diagram of a device with labeled components and a magnified view showing air control knob with MAX, AIR, LEFT, and AHL controls.

fig. 30

Technical diagram of a mechanical assembly with numbered components for identification

fig. 34

Technical diagram of a mechanical device with numbered parts labeled 5 and 6

fig. 35

Diagram showing a mechanical device with a green circle containing a green dot and black arrows pointing to a square symbol, alongside a magnified view of the circle.

fig. 37

24 = Symbol ogrzewania

-1+ FH 10 -1+ on off reset mode coff. on on off wyglad 6- Zaplon kotla

30 -11°C 0F atc @T @W Razet

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

Technical diagram of a pump control unit with labeled buttons and a magnified view showing function icons.

wygląd 1 8

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

4m. MAX P

-1+ 50 eco 80 12 bar on off reset e eco comfort m open

Technical diagram of a mechanical device with numbered components labeled 1 through 6

Technical diagram of a mechanical device with numbered components and pressure gauges labeled 1 through 6.

Technical diagram of a device with numbered components and labeled parts

wygląd 2 9

Technical diagram of a mechanical assembly with numbered components for identification

wygląd 3 4

Technical diagram of a mechanical device with numbered components labeled 5 and 6

wygląd 3 5

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

wygląd 3 6

Diagram showing a mechanical device with a green circle containing a green dot and black arrows pointing to a square symbol, alongside a magnified view of the circle.

wygląd 3 7

-1+ 53°C eco 70°C l2 bar -1+ on off go/6/1f mode r 958 T

EIK. 2

- + - + - + on off re set

-1+ FH 10 -1+ on off reset

-1 + - + off a c o con. for on off m on e ro s t

-1+ -0F 48°C eco on off comf mode reset

εΙΚ. 9

-1+ 0F eco 80°C l2bar on off mode reset

εικ. 10

Technical line drawing of a mechanical device with a magnified inset showing its control panel (no text or symbols present)

εικ. 18

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

4m. MAX P

-1+ 50 eco 80 L2bar -1+ on off res φ 60° 1 off fat move on off

Technical diagram of a mechanical device with numbered components labeled 1 through 6

Technical diagram of a mechanical device with numbered components and pressure gauges labeled 1 through 6.

Technical diagram of a device with numbered components and labeled parts

εικ. 29

Ρύθμιση τάμπερ αέρα

εIK. 3 0 ① ② ③ MAX AIR STOP 1 MIN ARIA AIR LIFT AIRS ①

Technical diagram of a mechanical assembly with numbered components for identification

EIK. 34

Technical diagram of a mechanical device with numbered parts labeled 5 and 6

εικ. 3 5

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

εικ. 3 6

Diagram showing a mechanical device with a green circle containing a green dot and an arrow pointing to it, alongside a circular icon with a triangle symbol.

εικ. 3 7