Part L - ventilation systems

I'm trying to input a student accommodation building into Part L - each apartment has a bedroom and ensuite with the overall apartment having a dedicated HRU, the results on the BRUKL document criterion 2 show the ventilation system as being type A and type D when surely the results should be just a type D.  I've tried to find an answer but seem to be drawing a blank.  Any ideas ?

Parents Reply
  • There's certainly some interesting things going on there.

    I note that the wording for the system types is slightly different - Type A being local supply OR extract ventilation. Type D being local supply AND extract ventilation. 

    It also seems that the Supply SFP is deciding whether Type D is selected, and the Extract SFP is deciding whether Type A is selected.

    Your data is fine - you can use the data reflection report to check it - its definitely a vagary of the SBEM calculation engine.

    Regards,

    Duncan Brown



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