Products
News about the products
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20 June 2018
Osa wins the "Compasso d’Oro" award
The Osa domestic boiler won the ADI Compasso d’Oro, the oldest and certainly the most prestigious international design award...
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27 July 2017
Unical Osa, daring to go "beyond the mirror"
New exclusive ‘mirror’ customisation for Osa, its iconic designer boiler......
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10 October 2016
ADI DESIGN INDEX 2016
OSA has been selected by ADI for ADI DESIGN INDEX 2016. Appraised .......
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05 April 2016
The Art of Living
After MCE 2016, Unical will be present with OSA also at the Milanese events of the FUORI SALONE...
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OSA S
Wall hung, extra thin, low NOx, room sealed, condensing gas boiler with electronic ignition and continuous modulation, with DHW production. Front panel in different colours. Registered design
- Thanks to U-Fly, the integral disappearing control console, connected to the room and outdoor temperature sensors, reaches, in heating mode, the seasonal efficiency class A+
- Low NOx class 5
- Heat exchanger / Condenser in aluminium /silicon / magnesium Total premix burner, with constant combustion ratio, completely electronic (both, gas valve and modulating fan)
- Ignition and electronic flame control through single electrode
- Modulation ratio 1:8
- Automatic feed-back of the combustion through the electrode (that monitors constantly the quality of the combustion)
- DHW heat exchanger in antiscaling stainless steel, with 12 plates (x 24 kW) and 14 plates (x 35 kW), with “thermal length” optimized for the condensation
- Adjustment of output according to heating request
- HWS “Hot Water Speed” electronic function: commutation from heating to DHW mode without stopping the pump
- Management of 2 zones: high / low temperature, with differentiated priority
- Clever hydraulic filling of the C.H. system (able to indicate possible leakages)
- Electronic antifreeze function from 5°C
- Multigas burner (Natural gas or LPG) with silplified commutation
- Up-gradable through type USB interface
- High efficiency pump, complying with the Erp Directive 2015, modulating according to the output request, managed by the on board electronics
- Connection for diagnostics and programming through computer or portable Programmer
- Two expansion vessels (10 liters total)
- Inspection system of the burner and heat exchanger cleaning through quick release clampings
- Standard supplied in “black” colour
- AWARDS: COMPASSO D'ORO 2018 - RED DOT AWARD 2017 - nomination a GERMAN DESIGN AWARD 2017; ADI DESIGN INDEX 2016
- Registered Design and Trade Mark
User Manuals
Installation Manuals
Brochures
Certifications
Technical informations
Codice
Titolo
Tipologia
- VENTILAZIONE DEI LOCALITechnical info
- TRATTAMENTO DELL'ACQUATechnical info
- ALLACCIAMENTI ELETTRICITechnical info
- SCARICHI PER CALDAIE A CONDENSAZIONETechnical info
- SONDA ESTERNA - CURVA COMPENSAZIONETechnical info
Accessories
Codice
Titolo
Tipologia
- TELESCOPIC CONNECTIONS KITHydraulic
- HORIZONTAL PIPES & GATE VALVES KIT x EVELIN & ALKON INCHydraulic
- KIT PLEXY OSA S MATT BLACKHydraulic
- KIT PLEXY OSA S WHITEHydraulic
- KIT PLEXY OSA S APPLE GREENHydraulic
- GATE VALVES KIT WITH EXTENSIONHydraulic
- GRILL Ø 80 x SMOKE EVACUATION DUCTFlue Kits
- GRILL Ø 80 x AIR INLET DUCT x ALKON 50 - 70Flue Kits
- KIT 'A' in PP x ALKON SLIM & ALKON 09Flue Kits
- COAXIAL ELBOW 90° M.F. Ø 60/100 in PP x ALKON BOILERSFlue Kits
- COAXIAL SMOKE/AIR DUCTS Ø 60/100 in PP x ALKON BOILERSFlue Kits
- COAXIAL EXTENSION M.F. Ø 60/100 in PP L = 1000 mm x ALKON BOILERSFlue Kits
- PROLUNGA COAX D.60/100 L=500 (POLIPROPILENE)Flue Kits
- CAMINO ASPIRAZIONE/SCARICO COAX 80/125 (POLIPROPILENE)Flue Kits
- CURVA 90° COAX Ø80/125 (POLIPROPILENE)Flue Kits
- TERMINALE COAX ASP/SCAR ORIZZONTALE 80/125 (POLIPROPILENE)Flue Kits
- ADATTATORE COAX. 80/125 - 60/100 (POLIPROPILENE)Flue Kits
- PROLUNGA COAX D.80/125 L=1000 (POLIPROPILENE)Flue Kits
- EXTENSION PIPE M.F. in PP Ø 80 L= 1 m x CONDENSING BOILERSFlue Kits
- SMOKE EVACUATION TERMINAL in PP Ø 80 x CONDENSING BOILERSFlue Kits
- TRONCHETTO D.80 M/F (POLIPROPILENE)Flue Kits
- PROLUNGA BICCHIERATA D.80 L=730 MM (POLIPROPILENE)Flue Kits
- TRONCHETTO RIDUZIONE D.80 M - D.60 F (POLIPROPILENE)Flue Kits
- CURVA 90° M/F D.60 (POLIPROPILENE)Flue Kits
- PROLUNGA D.60 L=500 (POLIPROPILENE)Flue Kits
- PROLUNGA D.60 L=1000 (POLIPROPILENE)Flue Kits
- TERMINALE SCARICO D.60 (POLIPROPILENE)Flue Kits
- TERMINALE ASPIRAZIONE D.60 (POLIPROPILENE)Flue Kits
- TRONCHETTO RIDUZIONE D.80 F - D.60 M (POLIPROPILENE)Flue Kits
- AIR INLET TERMINAL in PP Ø 80 x CONDENSING BOILERSFlue Kits
- M.F. 90° ELBOW in PP WIDE RADIUS x CONDENSING BOILERSFlue Kits
- CURVA 45° D.80 M/F (POLIPROPILENE)Flue Kits
- CURVA COAX. 45° 80/125 (POLIPROPILENE)Flue Kits
- ADATTATORE COASSIALE D.60/100 CONDENSAZIONE (POLIPROPILENE)Flue Kits
- CURVA COAX. 45° 60/100 (POLIPROPILENE)Flue Kits
- KIT 'B' ASPIRAZIONE/SCARICO Ø80 (POLIPROPILENE)Flue Kits
- KIT 'B23' ASPIRAZIONE/SCARICO Ø80 (POLIPROPILENE)Flue Kits
- KIT 'A' CON ISPEZIONI CALDAIE KON (POLIPROPILENE)Flue Kits
- CURVA 90° COAX. FLANGIATA Ø60/100 + ISPEZ. (POLIPROPILENE)Flue Kits
- TRONCHETTI FLANGIATI ASP/SCAR D.80 CON ISPEZ (POLIPROPILENE)Flue Kits
- KIT SCARICO INTEGRATO OSA KFlue Kits
- KIT COASSIALE Ø60/100 (28/35 KW)Flue Kits
- PIPE SUPPORTING CLAMP Ø 100 mmFlue Kits
- PIPE SUPPORTING CLAMP Ø 80 mmFlue Kits
- OUTER ROSETTE FOR PIPES Ø 100 mmFlue Kits
- OUTER ROSETTE FOR PIPES Ø 80 mmFlue Kits
- INNER ROSETTE FOR PIPES Ø 100 mmFlue Kits
- INNER ROSETTE FOR PIPES Ø 80 mmFlue Kits
- SMOKE EVACUATION TILE x SLANTING ROOFSFlue Kits
- SMOKE EVACUATION DISC x FLAT ROOFSFlue Kits
- PIPES COUPLING COLLAR Ø 80 x STD BOILERSFlue Kits
- KIT ANTIGELO CON RISCALDATORIRegulations
- OUTER TEMPERATURE SENSORRegulations
- KIT MODULO MULTIFUNZIONE SHCRegulations
- ON-OFF CHRONOTHERMOSTAT REGOLAFACILERegulations
- CHRONOTHERMOSTAT GA 240Regulations
- SONDA AMBIENTE OSARegulations