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Type Index number Status
Gas and oil fuel boiler 015871 Normal
Brand Model name Model qualifier
Viessmann Vitodens 343F
     
Boiler ID*
Fuel mains gas
SAP winter seasonal efficiency (%) 88.4  
SAP summer seasonal efficiency (%) 81.1  
Seasonal efficiency when used in non-domestic buildings 95.9  
Comparative hot water efficiency (%) 41.7  
Efficiency category SEDBUK based on certified data
SAP equation used 106  
Output power (kW) 11.8  
     
Main type combi
Condensing yes  
Integral PFGHRD no  
Flue type room-sealed  
Fan assisted yes  
Ignition no  
Burner control variable (stepped or modulating)  
Mounting position wall  
Exposure rating indoor only  
     
Original manufacturer name Viessmann
Current manufacturer name Viessmann
Manufacturer address Hortonwood 30
Telford
Shropshire
TF1 7YP
Manufacturer phone +44 1952 675000
Manufacturer website www.viessmann.co.uk
First year of manufacture 2008  
Final year of manufacture 2012  
Entry updated 31/01/2024 10:17  
*This may be GC (formerly Gas Council) number for a gas boiler or OFTEC Registration number for an oil boiler, but if not available the manufacturer may have chosen another identifier marked on the boiler.

 

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