Atlas D ECO 34 COND SI UNIT - Heat pump FERROLI - Free user manual and instructions

USER MANUAL Atlas D ECO 34 COND SI UNIT FERROLI

cod. 3541Q474 — Rev. 00 - 12/2021

cod. 3541Q474 - Rev. 00 - 12/2021

OFFSET = 20 OFFSET = 40ATLAS D ECO 34 COND SI UNIT

cod. 3541Q474 - Rev. 00 - 12/2021

cod. 3541Q474 - Rev. 00 - 12/2021

OFFSET = 20 OFFSET = 40ATLAS D ECO 34 COND SI UNIT

cod. 3541Q474 - Rev. 00 - 12/2021

cod. 3541Q474 - Rev. 00 - 12/2021

• Read the warnings in this instruction booklet carefully since they provide important informa- tion on safe installation, use and maintenance.

• This instruction booklet is an integral and essen- tial 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 con- sulted 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 in- structions.

• Incorrect installation or inadequate maintenance can result in damage or injury. The manufacturer declines any liability for damage caused by er- rors 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 spe- cial cut-off devices.

• In case of a fault and/or poor operation, deacti- vate the unit and do not try to repair it or directly intervene. Contact professionally qualified per- sonnel. 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 pur- pose. 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 experi- ence 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 appropri- ately disposed of in compliance with current reg- ulations.

• The images given in this manual are a simplified representation of the product. In this representa- tion there may be slight and insignificant differ- ences with respect to the product supplied. THE CE MARKING CERTIFIES THAT THE PROD-

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 dis- posed of together with domestic waste. Improper management of electric or electronic waste can lead to the leakage of hazardous substances con- tained 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.ATLAS D ECO 34 COND SI UNIT

cod. 3541Q474 - Rev. 00 - 12/20212. OPERATING INSTRUCTIONS2.1 IntroductionDear Customer, Thank you for choosing a FERROLI boiler featuring advanced design, cutting-edge tech- nology, high reliability and quality construction. Please read this manual carefully sinceit provides important information on safe installation, use and maintenance.ATLAS D ECO 34 COND SI UNIT is a high-efficiency heat generator for heating anddomestic hot water production, equipped with a blown oil burner. The boiler shell con-sists of cast-iron elements, assembled with double cones and steel stays. The controlsystem is with microprocessor and digital interface with advanced temperature controlfunctions.2.2 Control panelPanelfig. 1 - Control panelPanel key1 = DHW temperature setting decrease button2 = DHW temperature setting increase button3 = Heating system temperature setting decrease button4 = Heating system temperature setting increase button5 = Display6 = Summer / Winter mode selection button7 = Economy / Comfort mode selection button8 = Reset button9 = Unit On / Off button10 = "Sliding Temperature" menu button11 = Set DHW temperature reached12 = DHW symbol13 = DHW mode14 = DHW outlet temperature / setting15 = Eco (Economy) or Comfort mode16 = External sensor temperature (with optional external probe)17 = Appears on connecting the external Probe or the Remote Timer Control (op-tionals)18 = Room temperature (with optional Remote Timer Control)19 = Burner On20 = Antifreeze operation21 = Heating system pressure22 = Fault23 = Heating delivery temperature/setting24 = Heating symbol25 = Heating mode26 = Set heating delivery temperature reached27 = Summer modeIndication during operationHeatingA heating demand (generated by the Room Thermostat or Remote Timer Control) is in- dicated 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 tempera-ture reaches the set value.fig. 2Domestic hot water (DHW)A DHW demand (generated by drawing domestic hot water) is indicated by flashing ofthe hot water under the tap (details 12 and 13 - fig. 1).fig. 3ComfortA Comfort demand (reinstatement of temperature inside the boiler) is indicated by flash-ing of the COMFORT symbol (details 15 and 13 - fig. 1)fig. 42.3 Lighting and turning offBoiler not electrically poweredfig. 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 suit- able 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. 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 automaticallywhenever 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. 7 - Turning the boiler off

cod. 3541Q474 - Rev. 00 - 12/2021 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. 8 The boiler will be immediately ready to operate whenever domestic hot water is drawn or in case of a room thermostat demand.

Summer/Winter Switchover Press the Summer/Winter button (detail 6 - fig. 1) for 1 second. 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 min- imum of 30°C to a maximum of 80°C. It is advisable not to operate the boiler below 45°C. 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. fig. 11 Room temperature adjustment (with optional room thermostat) Using the room thermostat, set the temperature desired in the rooms. If the room ther- mostat 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 max- imum 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 op- erates 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 advis- able 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. 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). 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 ad- justments are managed according to that given in table 1. Also, the control pan- el display (detail 5 - fig. 1) shows the actual room temperature read by the Remote Timer Control.

OFFSET = 20 OFFSET = 40ATLAS D ECO 34 COND SI UNIT

cod. 3541Q474 - Rev. 00 - 12/2021Table. 1Water 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. 16).fig. 16 - Low system pressure fault Once the system pressure is restored, the boiler will activate the 120-secondair venting cycle indicated on the display by FH.3. INSTALLATION3.1 General InstructionsBOILER INSTALLATION MUST ONLY BE PERFORMED BY QUALIFIED PERSON- NEL, IN ACCORDANCE WITH ALL THE INSTRUCTIONS GIVEN IN THIS TECHNICAL MANUAL, THE PROVISIONS OF CURRENT LAW, THE PRESCRIPTIONS OF NA-TIONAL AND LOCAL STANDARDS AND THE RULES OF PROPER WORKMANSHIP.3.2 Place of installationThe boiler unit must be installed in a specific room with ventilation openings to the out-side as prescribed by current regulations. If there are several burners or suction unitsthat can work together in the same room, the ventilation openings must be sized for si-multaneous operation of all the units. The place of installation must be free of flammablematerials or objects, corrosive gases, powders or volatile substances that, conveyed bythe burner fan, can obstruct the internal lines of the burner or the combustion head. Theroom 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 pro-vided for removing the casing and for normal maintenance operations.3.3 Plumbing connectionsImportantThe heating capacity of the unit must be previously established by calculating the build-ing's heat requirement according to the current regulations. The system must be provid-ed with all the components for correct and regular operation. It is advisable to installshutoff valves between the boiler and heating system allowing the boiler to be isolatedfrom 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 ap- pliances. Before installation, flush all the pipes of the system thoroughly to remove any residualsor impurities that could affect proper operation of the unit.Carry out the relevant connections according to the diagram in cap. 5 and the symbolsgiven on the unit.High efficiency circulating pumpFor proper operation of the boiler ATLAS D ECO 34 COND SI UNIT, the speed selector(see fig. 17) must be set to position III.fig. 17High-efficiency circulating pump (model PARA)Control buttons and signaling LEDsfig. 18For a correct result of the "Thermal quantity balance" calculation (see section 11 THER- MAL QUANTITY BALANCE (METERING), the circulating pump must be set to "Con- stant speed " and to the position . To set this adjustment, press button "A" several times until the LEDs shown in the figure below light up. fig. 19Characteristics of the water systemIn the presence of water harder than 25° Fr (1°F = 10ppm CaCO3), use suitably treatedwater in order to avoid possible scaling in the boiler. Treatment must not reduce the hard-ness to values below 15°F (Decree 236/88 for uses of water intended for human con-sumption). Treatment of the water used is indispensable in case of very large systemsor with frequent introduction of replenishing water in the system.Antifreeze system, antifreeze fluids, additives and inhibitorsThe boiler is equipped with an antifreeze system that turns on the boiler in heating modewhen 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 ofthese fluids or additives guarantees they are suitable for this use and cause no damageto the heat exchanger or other components and/or materials of the boiler unit and sys-tem. It is prohibited to use generic antifreeze fluid, additives or inhibitors that are not ex-pressly suited for use in heating systems and compatible with the materials of the boilerunit and system.Heating temperature adjustmentAdjustment can be made from the Remote Timer Control menu and the boiler control panel.Summer/Winter SwitchoverSummer mode has priority over a Remote Timer Control heating demand.Eco/Comfort selectionOn disabling DHW from the Remote Timer Control menu, the boiler selects the Economy mode. In this condition, the button 7 - fig. 1 on the boiler panel is dis-abled.On enabling DHW from the Remote Timer Control menu, the boiler selects the Comfort mode. In this condition it is possible select one of the two modes with the button 7 - fig. 1 on the boiler panel.Sliding TemperatureBoth the Remote Timer Control and the boiler card manage Sliding Tempera-ture adjustment: of the two, the boiler card Sliding Temperature has priority. Min

cod. 3541Q474 - Rev. 00 - 12/2021

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. fig. 20 - Fuel filter installation The oil feed circuit must be made according to one of the following diagrams, without ex- ceeding the pipe lengths (LMAX) given in the table. fig. 21 - Gravity feed fig. 22 - Suction feed fig. 23 - Siphon feed fig. 24 - Ring feed

3.5 Electrical connections

Connection to the electrical grid

The unit's electrical safety is only guaranteed when cor- rectly connected to an efficient earthing system executed according to current safety standards. Have the efficiency and suitability of the earthing system checked by profes- sionally qualified personnel. The manufacturer is not re- sponsible for any damage caused by failure to earth the system. Also make sure that the electrical system is ade- quate 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 elec- tricity 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 re- spect 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 diam- eter of 8 mm. Room thermostat (optional)

NENTLY DAMAGE THE ELECTRONIC BOARD. When connecting time controls or a timer, do not take the power supply for these devices from their breaking con- tacts Their power supply must be by means of direct con- nection from the mains or with batteries, depending on the kind of device.ATLAS D ECO 34 COND SI UNIT

cod. 3541Q474 - Rev. 00 - 12/2021Accessing the electrical terminal block Undo the two screws “A” located on the top part of the control panel and remove the cover.fig. 25 - Accessing the terminal board3.6 Connection to the flueThe unit must be connected to a flue designed and built in compliance with the currentregulations. The pipe between the boiler and flue must be made from material suitablefor the purpose, i.e. heat and corrosion resistant. Ensure the seal at the joints.3.7 Condensate drain connectionThe unit's condensate drain must be connected to a suitable disposal system. Complywith the specific local and national regulations on discharging condensate water into thewaste water disposal system. For boilers not using exclusively low-sulphur gas oil (Scontent<50 ppm) make sure to provide for a suitable condensate neutralisation device. Connect the condensate drain pipe located at the back of the boiler (ref. A - fig. 26) to the neutralisation device connected to the waste water system. The condensate dis-charge pipes must be acidproof and installed sloping at least 3° towards the drain, with-out any constrictions and obstructions.

IMPORTANT. Fill the trap with water before starting the unit. ATTENTION: The unit must never be operated with the trap empty! Periodically check the water in the trap. fig. 26 - Condensate drain3.8 Conversion of boiler with burner to sealed chamber

ATTENTION: The connection with separate pipes indicat- ed here can be done only and exclusively with the sealed chamber kit. A kit is available on request for converting the boiler with burner to sealed chamber. This conversion allows the air necessary for combustion to be sucked directly from the out-side.For installation, refer to the instructions contained in the kit.fig. 27 - Sealed chamber conversion kit After installation, the unit becomes a "C type" with sealed chamber and forced draught. The air inlet and fume outlet must be connected to one of the extraction/suction systems specified below. The unit is approved to operate with all the Cxy flue configurations given in these instructions. Some configurations may be expressly limited or not permitted bylaw, standards or local regulations. Before proceeding with installation, check and care-fully observe the above instructions. Also, comply with the provisions on the positioningof wall and/or roof terminals and the minimum distances from windows, walls, ventilationopenings, etc. Only use ducts in stainless steel, suitable for use with oil-fired condensing heatgenerators.Connection with separate pipesfig. 28 - Examples of connection with separate pipes ( = Air / = Fumes)Before installation, make sure the maximum permissible length has not been exceeded,by means of a simple calculation:1. Completely establish the layout of the system of split flues, including accessoriesand outlet terminals.2. Consult the table 3 and identify the losses in m (equivalent metres) of every com-ponent, according to the installation position.3. Check that the sum total of losses is less than or equal to the maximum permissiblelength in table 2.Table. 2 - Separate ducts

cod. 3541Q474 - Rev. 00 - 12/2021 Table. 3 - Accessories

4. SERVICE AND MAINTENANCE

All adjustment, conversion, commissioning and maintenance operations described be- low 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 un- authorised persons tampering with the unit.

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. 29 - 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 4. 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

content in the fumes is between 11% and 12%. Nozzle flow rate table for oil table 4 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. 4 Pump pressure adjustment The pump is factory-set to 12 bar. Use an oil bath gauge to check the pressure. The pres- sure can be adjusted between 11 and 14 bar. fig. 30- Pump ITALPUMP fig. 31- Pump DANFOSS

3. Oil delivery Ø1/8”

4. Pressure adjustment

5. Pressure gauge connection Ø1/8”

6. Vacuum gauge connection Ø1/8”

Combustion head adjustment The head is adjusted by means of the screw

, according to the indications of the pointer

Air adjustment Fume exhaust Vertical Horizontal Ø 80 PIPE

Flow rate at nozzle outlet in kg/h

cod. 3541Q474 - Rev. 00 - 12/2021 Air damper adjustment After loosening the screw 3, operating the screw 1, the combustion air is adjusted ac- cording to the indications of the pointer 2. After adjustment, lock the screw 3. fig. 33 Position of electrodes - baffle After fitting the nozzle, check correct positioning of the electrodes and baffle, according to the dimensions given below. It is advisable to check the dimensions after each oper- ation on the head. fig. 34- Position of electrodes - baffle

Checks to be made at first lighting, and after all mainte- nance operations involving disconnection from the sys- tems or an operation on safety devices or parts of the boiler: Before lighting the boiler

• Open any on-off valves between the boiler and the systems.

• Check the tightness of the fuel system.

• Check the pre-filling of the expansion tank

• Fill the water system and make sure that all air contained in the boiler and the sys- tem has been vented by opening the air vent valve on the boiler and any vent valves on the system.

• Make sure there are no water leaks in the system, hot water circuits, connections or boiler.

• Make sure the electrical system is properly connected and the earth system works properly.

• Make sure there are no flammable liquids or materials in the immediate vicinity of the boiler.

• Fit the pressure gauge and the vacuum gauge on the pump (remove after starting) of the burner.

• open the gate valves along the diesel pipe Start-up fig. 35 - Starting

When the thermostatic line closes, the burner motor starts turning together with the pump: all the oil sucked is sent to the return. The burner blower and the ignition trans- former are also working, therefore the following stages are carried out:

• firebox preventilation.

• prewash of a part of the oil circuit.

• preignition, with discharge between electrode tips.

At the end of prewash, the unit opens the electromagnetic valve: the oil reaches the noz- zle, where it is finely sprayed. Its contact with the discharge between the electrode tips creates the flame. The safety time begins simultaneously. Unit cycle fig. 36 - Unit cycle R-SB-W Thermostats/Pressure switches OH OIl pre-heater OW Operation enabling contact M Burner motor Z Ignition transformer BV Electromagnetic valve FR Photoresistance A’ Starting with pre-heater A Starting 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 Pre-heating 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

in the fumes is between 11% and 12%.

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 clean- ing 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.

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.

cod. 3541Q474 - Rev. 00 - 12/2021Boiler cleaning1. 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 tubebrush 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. 37
• 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 andspraying hole with petrol, rinsing it with fuel oil. When reassembling everything, payattention to the correct positioning of the electrodes-baffle.fig. 38Boiler cleaning1. Disconnect the power supply to the boiler.2. Remove the burner as described above.

3. Remove the panels “E” and “F” by undoing the respective nuts.

4. Clean the inside of the boiler and the entire path of exhaust fumes, using a tubebrush or compressed air.5. Close the panels.fig. 39

cod. 3541Q474 - Rev. 00 - 12/2021Cleaning the fume recuperatorTo clean the fume recuperator:• Remove the cover B.• Remove the fume recuperator closing covers C.• Carefully clean the inside of the recuperator using an aspirator.• If particularly dirty, a suitable device for spraying water inside can be used. In thiscase, make sure large amounts of water do not come into contact with the cast iron elements in the smoke chamber. Run the water through the condensate drain D af- ter disconnecting the trap.fig. 40 - Cleaning the recuperatorPositioning of combsAfter cleaning the recovery unit make sure the combs are positioned correctly, as shown in fig. 41. Tighten the nuts on the compressor disk "A" respecting the torque setting of 0.6 Nm. If a torque wrench is unavailable, check that there is a fume passage of 1 mmbetween the coils.fig. 41 - Positioning of combs4.4 TroubleshootingDiagnosticsThe 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 faultcode. 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 onthe remote timer control (optional) if installed; if the boiler does not restart it is necessaryto eliminate the fault indicated in the operation LEDs.Other faults cause temporary shutdowns (marked with the letter “F”) which are automat-ically reset as soon as the value returns within the boiler's normal working range.ATTENTIONFrom software version 23, an additional feature has been introduced to facilitate burnercalibration, i.e. flame flashing on the display to indicate that the burner is on but with in-dication of non-optimal flame.For the various software versions, the meanings of the symbols shown on the displaycan be found in the table 1.Table. 5- Flame symbol indicationsTable. 6 - List of faults

cod. 3541Q474 - Rev. 00 - 12/2021 Some faults linked to the circulating pump are signalled by the LED located around the speed selector (fig. 42 - fig. 43). fig. 42 Table. 7 - Circulating pump LED indications Circulating pump diagnostics (model PARA) Some faults linked to the circulating pump are signaled by the LED (fig. 43). fig. 43 F10 Delivery sensor 1 fault Sensor damaged Check the wiring or replace the sensor Wiring shorted Wiring disconnected F11 Card parameter fault Wrong card parameter setting Check the card parameter and modify it if necessary F12 Card parameter fault Wrong 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 Wrong 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 fre- quency 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 tempera- ture 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 pres- sure sensor fault Wiring disconnected Check the wiring Fault code Fault Possible cause Cure Off Circulating pump on STANDBY Green ON Circulating pump Working Green Flashing Air venting cycle Green/Red alternating Circulating pump blocked due to external causes: - Overvoltage (>270V) - Insufficient voltage (<160V) - Motor overload Red Flashing Circulating pump blocked due to internal causes: - Motor blocked - Damaged electronics 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 tem- perature 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 accord- ance with specifications (e.g. high module temperature). The speed is lower than in normal operation. Min.

cod. 3541Q474 - Rev. 00 - 12/20215. TECHNICAL DATA AND CHARACTERISTICS5.1 Main components, dimensions and connectionsfig. 44- Front viewfig. 45- Side viewA4 = Fume outlet Ø 1008 = DHW delivery9 = Cold water inlet10 = System delivery11 = System return14 = Safety valve32 = Heating circulating pump36 = automatic air vent38 = Flow switch56 = Expansion tank74 = Filling cock95 = Diverter valve193 = Trap246 = Pressure transducer275 = Heating system drain cock278 = Double sensor (Safety + heating)295 = Burner338 = Fumes recuperatorfig. 46 - Rear view5.2 Water circuitfig. 47 - Water circuit

cod. 3541Q474 - Rev. 00 - 12/20215.3 Pressure lossCirculating pumps Head/Pressure lossA = Boiler pressure loss1 -2 - 3 = Circulating pump speedfig. 48 - Pressure losses5.4 Technical data table Data Unit Value Model ATLAS D ECO 34 COND SI UNIT Number of elements no. 3 Max. heating capacity kW 33.0 (Q) Min. heating capacity kW 16.3 (Q) Max. heat output in heating (80-60°C) kW 32.0 (P) Min. heat output in heating (80-60°C) kW 16.0 (P) Max. heat output in heating (50-30°C) kW 33.8 (P) Min. heat output in heating (50-30°C) kW 17.0 (P) Efficiency Pmax (80-60°C) % 97.2 Efficiency Pmin (80-60°C) % 97.8 Efficiency Pmax (50-30°C) % 102.6 Efficiency Pmin (50-30°C) % 103.7 Efficiency 30% % 103.6 Max. working pressure in heating bar 3 (PMS) Min. working pressure in heating bar 0.8 Max. heating temperature °C 100 (tmax) Heating water content litres 21 Heating expansion tank capacity litres 10 Heating expansion tank prefilling pressure bar 1 Max. working pressure in hot water production bar 9 (PMW) Min. working pressure in hot water production bar 0.3 DHW content litres 0.5 DHW flow rate Dt 25°C l/min 18.9 DHW flow rate Dt 30°C l/min 15.8 Protection rating IP X0D Power supply voltage V/Hz 230/50 Electrical power input W 240 Empty weight kg 180 Combustion chamber length mm 350 Combustion chamber diameter mm 300 Pressure losses, fume side mbar 0.12

cod. 3541Q474 - Rev. 00 - 12/2021

OFFSET = 20 OFFSET = 40ATLAS D ECO 34 COND SI UNIT

cod. 3541Q474 - Rev. 00 - 12/2021

cod. 3541Q474 - Rev. 00 - 12/2021

OFFSET = 20 OFFSET = 40ATLAS D ECO 34 COND SI UNIT

cod. 3541Q474 - Rev. 00 - 12/2021

LET OP: DE OMGEVINGSTHERMOSTAAT MOET

cod. 3541Q474 - Rev. 00 - 12/2021

OFFSET = 20 OFFSET = 40ATLAS D ECO 34 COND SI UNIT

cod. 3541Q474 - Rev. 00 - 12/2021

cod. 3541Q474 - Rev. 00 - 12/2021

cod. 3541Q474 - Rev. 00 - 12/2021

OFFSET = 20 OFFSET = 40ATLAS D ECO 34 COND SI UNIT

cod. 3541Q474 - Rev. 00 - 12/2021

cod. 3541Q474 - Rev. 00 - 12/2021

cod. 3541Q474 - Rev. 00 - 12/2021

cod. 3541Q474 - Rev. 00 - 12/2021

cod. 3541Q474 - Rev. 00 - 12/2021

cod. 3541Q474 - Rev. 00 - 12/2021

cod. 3541Q474 - Rev. 00 - 12/2021

cod. 3541Q474 - Rev. 00 - 12/2021