Unical Osa S 24 Installation And Servicing Manual
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Unical Osa S 24 Installation And Servicing Manual

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+ TOUCH CONTROL Ufly BOX integrate
S 24
S 28
S 35
INSTALLATION AND SERVICING MANUAL

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Summary of Contents for Unical Osa S 24

  • Page 1 + TOUCH CONTROL Ufly BOX integrate S 24 S 28 S 35 INSTALLATION AND SERVICING MANUAL...
  • Page 2 http://www.unicalag.it/prodotti/domestico-50/condensazione-gas/osa/1635/osa-s Provisions for proper disposal of the product in accordance with Directive 2002/96/EC At the end of its life cycle the product must not be disposed of as urban waste. It can be taken to a special recycling centre managed by the local authorities, or to a dealer who offers this service. Separate disposal of a domestic appliance avoids possible negative consequences for the environment and human health deriving from inappropriate waste handling and allows the recovery of the materials of which it is made, in order to obtain significant energy and resource savings.

  • Page 3: Table Of Contents

    Attention: this manual contains instructions for the exclusive use of the professionally qualified installer and/or maintenance technician in compliance with current legislation. The user is NOT qualified to intervene on the boiler. The manufacturer will not be held liable in case of damage to persons, animals or objects resulting from failure to comply with the instructions contained in the manuals supplied with the boiler.

  • Page 4: General Information

    Any repairs must be performed solely by personnel authorised by Unical AG S.p.A., using original spare parts only. Failure to comply with the above can com- Keep the booklet with care for further consultation.

  • Page 5: Symbols Used In The Manual

    Any other use is considered improper. Unical AG S.p.A. will not be held liable for any damage resulting from improper use. Use according to the intended purposes also includes strict compliance with the in- structions in this manual.

  • Page 6: Safety Warnings

    1.5 - SAFETY wARNINGS ATTENTION! The boiler cannot be used by children. The boiler can be used by adults and only after having carefully read the user’s ma- nual. Children should be supervised to ensure that they do not play or tamper with the device.

  • Page 7: Technical Data Plate

    1.6 - TECHNICAL DATA PLATE KEY: The CE marking 1 = CE monitoring body certifies the compliance of the equipment with the 2 = Type of boiler essential safety requirements defined in the directi- 3 = Boiler model ves and applicable European regulations and that 4 = Number of stars (directive 92/42 EEC) its functioning satisfy applicable technical stan- 5 = (S.N°) Serial Number...

  • Page 8: Water Treatment

    1.7 - wATER TREATMENT The treatment of the supply water ATTENTION! allows to prevent inconveniences ANY DAMAGE TO THE BOILER and maintain the functionality and CAUSED BY THE FORMATION OF efficiency of the generator over time. FOULING OR BY CORROSIVE wATER wILL NOT BE COVERED BY THE The ideal water pH in heating systems wARRANTY.

  • Page 9: Technical Features And Dimensions

    TECHNICAL FEATURES AND DIMENSIONS NOTE! For more information 2.1 - TECHNICAL FEATURES See Technical Info from site indicated at pag. 2 2.2 - VIEw wITH THE INDICATION OF THE MAIN COMPONENTS AND DIMENSIONS OSA S 24...
  • Page 10 OSA S 28 - OSA S 35...
  • Page 11 OSA S 24 - OSA S 28 - OSA S 35 View from below View from above...
  • Page 12 N° C.E. S.E. Description Condensation drain trap Domestic hot water temperature Ufly BOX (retractable) sensor Gateway (external links) FLS Flow switch with cold water filter Emergency panel Gas valve Ignition/detection electrode Aves Connection for additional expansion vessel /RIL Domestic hot water outlet G ½...
  • Page 13 2.3 - DIAGRAM OF FLOw RATE/PRESSURE AVAILABLE FOR INSTALLATION MODULATING PUMP DIAGRAM OF FLOw RATE/PRESSURE AVAILABLE FOR INSTALLATION OSA S 24 Flow rate (l/h) OSA S 28 - OSA S 35 Flow rate (l/h)

  • Page 14: Available Flow Rate / Pressure Diagram

    2.4 - OPERATING DATA ACCORDING TO UNI 10348 For the adjustment data: NOZZLES - PRESSURES - DIAPHRAGMS - FLOW RATES - CONSUMPTIONS refer to the paragraph ADAPTATION TO OTHER TYPES OF GAS. OSA S 24 OSA S 28 OSA S 35 Nominal heat input in CH / DHW mode 23,4 28,0 / 33,0 33,0 Minimum heat input with Nat. Gas / Propane 3,0 / 3,0...

  • Page 15: Operation Data

    A room temperature sensor monitors room temperature and adjusts the compensation curve parallel displacement to improve room comfort. Control is achieved by modulating the output of the heater. 2.5 - GENERAL FEATURES OSA S 24 OSA S 28 OSA S 35 Appliance category...

  • Page 16: Installation Instructions

    INSTALLATION INSTRUCTIONS 3.1 - GENERAL wARNINGS ATTENTION! If there is dust and/or if there are aggressive/corrosive vapours ATTENTION! present in the installation room, This boiler is intended solely for the appliance must be protected the use for which it was expressly suitably and must be able to designed.

  • Page 17: Packaging

    - 2 Spare parts form they are potential sources of danger. - Certificate of conformity Unical AG S.p.A. will not be held liable - Gas conversion label B - Connection predisposition paper template D - Chimney spacer...

  • Page 18: Positioning The Boiler

    3.5 - POSITIONING THE BOILER When choosing the place of the installation of the OSA S 24 - OSA S 28 - OSA S 35 appliance, follow the safety instructions below: - Place the appliance in rooms protected from frost.

  • Page 19: Flue Gas Exhaust Pipe Connection

    3.6 - FLUE GAS EXHAUST PIPE CONNECTION FOR BOILERS wITH FORCED DRAUGHT To connect the flue gas exhaust pipe, local and na- place the flue gas pipe as well. tional standards must be observed The boiler is type approved for the exhaust configu- In the event the boiler is replaced, ALwAYS re- rations listed below: C13x...
  • Page 20 These values relate to exhausts/ Air / flue gas through concentric pipes in the boiler made by means of rigid pipes and room and single pipes in the chimney (combustion smooth original UNICAL. air with counterlow in the chimney) NOTE! For more information See Technical Info from site indicated at pag.
  • Page 21 (Leave 2 above). It is recommended to only use original Unical exhaust pipes. The supplier will have no contractual or extra-contractual liability for damage caused due to incorrect installation and...

  • Page 22: Connections

    3.7 - CONNECTION Condensation drain 3/4’’ The boiler, during the combustion process, pro- Danger! duces condensation that, through pipe “A”, flows The gas connection must be carried out into the trap. only by a qualified installer who must re- The condensation that forms inside the boiler flows spect and apply that foreseen by relevant into a suitable drain via pipe “B”.

  • Page 23: Filling The System

    - let the system cool down and, if necessary, return the water pressure to 0.8/1 bar. (See par. 4.5). Unical will not be held liable for dam- age to persons, animals or objects due to failure to comply with the above instruction.

  • Page 24: Electrical Connections

    3.9 - ELECTRICAL CONNECTIONS Danger! any type of operation on electrical parts, always Only a qualified technician may per- disconnect electrical power and make sure that form the electrical installation. it cannot be reconnected accidentally. Before performing connections or The external connections have to be made on the (*) Optional GATEWAY (connector Y3), the cable exits wil be made in groves on cover A.
  • Page 25 INSIDE BOILER The power cable must be replaced by technical personnel authorised by UNICAL AG S.p.A., using original spare parts only. Failure to comply with the above can jeopardise the safety of the appliance. If necessary the shield of the sensor cable, can be connected to the termi- nal.

  • Page 26: Commissioning

    3.10 - COMMISSIONING Commissioning must be done by profes- failure to comply with the above instruction. sionally qualified personnel. Unical AG Before commissioning the boiler, check that: S.p.A. will not be held liable for damage to persons, animals or objects due to...

  • Page 27: Measurement Of Combustion Efficiency During Installation

    3.11 - MEASUREMENT OF COMBUSTION EFFICIENCY DURING INSTALLATION 3.11.1- ACTIVATION OF THE CALIBRATION ATTENTION! FUNCTION Function reserved for Authorised Assistance Centres only. 1 - Inserit psw and select the function 2 - Activation 3 - Available choice generator indicated by es: usually 1 / modulex 1÷8 4 - Activation...

  • Page 28: Probes Positioning

    5 - Generator active modulation max 100%. 6 - Change the % modulation to minimum 10%, and select the generator 8 - Disable function Chimney sweep 7 - Generator active modulation min. 3.11.2 - POSITIONING THE PROBES To determine the combustion efficiency - measurement of the flue gas temperature and one must make the following measurements: content of CO...

  • Page 29: Burner Adjustment

    3.12 - ADJUSTING THE BURNER Check the levels of CO2 often, especially with low flow rates. They refer to the boiler with a closed combustion chamber. PRESSURE - FLOw RATES TABLE OSA S 24 Collector Start-up Type of Effective Heating...

  • Page 30: Combustion Adjustment Function Activation

    3.12.1 - COMBUSTION ADJUSTMENT FUNCTION ACTIVATION This function allows a partial adjustment of the value on the following modulation points: Maximum output Start-up output Minimum output After Auto Calibration GAC par. 4.3.1 Perform combustion adjustment calibration as indicated: If the CO2 value is not as expected, when If the CO2 value is not as expected, when appears box (+/-), you can retouch the value of appears box (+/-), you can retouch the value of the...

  • Page 31: Adaptation Of The Power To The Heating System

    E.g.: OSA S 24 to decrease the output of the boiler to 18 kW, edit parameter 792 on Ufly BOX (about 70) E.g.: OSA S 28...

  • Page 32: Maintenance Instructions

    To assure long-term functioning of your appliance and to avoid altering its approved status, only original Once all maintenance operations are complete Unical AG S.p.A. spare parts must be used. resume boiler operation • Open the heating flow and return pipes, as well If a component needs to be replaced: as the cold water inlet valve (if closed previously).

  • Page 33: Pannello Comandi Ufly Box

    4.1.1- CONTROL PANEL Ufly BOX General Operating Instructions for Ufly- Ufly BOX is hidden inside the boiler, to BOX, are contained in specific manual access it, rotate as indicated. provided with the boiler. This section only lists the steps requi- red to Adjustment / maintenance of the boiler: - Chimney sweep function (Par.
  • Page 34 It is recommended to use the using a meter and compare the val- products purposely created by ue with that contained in table 3.12. Unical (see system protection The data measured indicates if the ACCESSORIES sect. in the exchanger needs cleaning.

  • Page 35: Parameters That Can Be Edited From The Control Panel

    4.2 - PROGRAMMING OF THE OPERATION PARAMETERS wARNING! Function reserved exclusively to authorized service centers. At every boiler lighting UFLY scans devices, if new devices are recognized, such as: hcm / Heating / Burner Control Manager Slave Heating Controller Multifunction module Burner Modul Manager They are displayed on the next screen, and is prompted to save the new configuration.
  • Page 36 To change the parameters is required password. CH#1 Max. Set point ACS Set point Min. ACS Set point Max. CH#1 Set point °C Parametri Access Code (#) Set. Min. Max. Code Description To change the following parameters you must Enabled Services: enable the access code.
  • Page 37 Unit: Fan min speed 0 = °C / bar (**) fan max speed 1 = °Fahrenheit / PSI Regolation Frequency: Proportional 0: 50 Hz - 1: 60 Hz Regolation Integrative Dis. local setpoint: 0: bidirectional Regolation Derivative 1: Only by remote ACS PID:Proportional Temp.

  • Page 38: Adaptation Of The Power To The Heating System

    4.3 - ADAPTATION TO THE USE OF OTHER GAS The boilers are produced for the type of gas specifi- cally requested upon ordering. Gas Conversion NOTE! DANGER! For more information The conversion for the operation of See Technical Info the boiler with a type of gas other from site indicated at pag.

  • Page 39: Gac Adjustment

    4.3.1 - GAC AUTOMATIC CALIBRATION One can perform the GAC in domestic hot water mode as well. Make sure that there are no heating requests pre- sent and that all the valves of the heating system are open. If during this stage one wishes to disperse the heat wARNING! on the domestic hot water circuit, open at least 2 hot Function reserved exclusively to...
  • Page 40 Step 1: CALIBRATION MAX POWER Step 2: CALIBRATION POWER START Step 3: CALIBRATION MIN POWER The automatic calibration is completed. To perform the calibration adjustment of combu- stion, see par. 3.12.1.
  • Page 42 BOARD BMM A1..A9 Services connectors ALIM. P. sup Supply. Pump Extra Control modulating Pump E. ACC./RIL Ignition/detection electrode EVCI (*) Caricamento Impianto (Only OSA S) Domestic hot water request flow switch MEMORY Memory CARD...

  • Page 43: Wiring Diagram

    4.4 - wIRING DIAGRAM Practical connection board Gas valve VM (A) Soupply modulating fan Diverter valve motor VM (R) Rilev./Reg. Modulating Fun MDV (**) Control predisposition diverter (external water Scheda GATEWAY heater) only Heating boilers Y1..Y3 Services connectors Circolatore Modulante 230 V - 50 Hz Boiler Supply Pressure Sensor System EXT DEVICE External devices: SHC (eBUS+/eBUS-) Flow heating sensor Terminal Room sensor Return heating sensor Terminal Outer sensor Domestic hot water probe (Pred. for R models)

  • Page 44: Error Code

    4.5 - ERROR CODES Failure that causes the stop of the boiler: Failure that could NOT cause stop of the boiler: - The error code is displayed, the boiler is in lock. Error code is displayed, the boiler is in CH demand, Icon Reset (note that was detected After resolving the fault press Reset to restart the boiler.
  • Page 45 Exchanger Freezing ( 24 ) Disconnect the from the power supply, close the gas valve, defrost the exchanger carefully. Exchanger freezing is detected If the heating sensor detects a temperature below 2° C, burner ignition is inhibited until the sensor detects a temperature above 5°C Parasite Flame Check the wiring and for any leaks from the...
  • Page 46 Gas valve wiring Frequent loss of flame Internal error General Lockout not listed Ignition failure Short circuit of the iono electrode Gas valve open delay...

  • Page 47: Filling System

    4.5.1 - FILL THE SYSTEM By pressing reset icon, start the automatic filling, up to a pressure of 1.2 bar (60 sec. max). If the system does not reach 1.2 bar pressure within 60 seconds, activate the fill manually by pressing LOAD icon.

  • Page 48: Important Note

    4.6 - IMPORTANT NOTES REPLACING COMPONENTS Before replacing components one must follow the MODULATION BOARD notes of chap. 4 "Inspections and maintenance". universal board memory The memory board is To replace the components: board (*) programmed by de- - GAS VALVE fault for METHANE - FAN gas operation.

  • Page 49: Service Panel

    4.6.1 - SERVICE PANEL The boiler can be programmed also by means of the service inner panel. Remove the screws indicated to ex- tract the panel and turn. Indications related to programming with the emergency panel, can be found at the address indicated on page 2, or on the user / installation manual and maintenance of KONE model boiler.
  • Page 52 - export@unical-ag.com - www.unical.eu Unical declines every responsibility for the possible inaccuracies if owed to errors of transcript or press. Also reserves the right to bring those changes that it will hold necessary to it own products or profits, without jeopardizing its essential characteristics.

This manual is also suitable for:

Osa s 28Osa s 35

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