I am working on project whereat a big retail store wants to use automatic sliding doors for their shop entrances.
According to ASHRAE 90.1-2007, 5.4 Mandatory Provisions -> 5.4.3 Air Leakage -> Fenestration and Doors, the air leakage shall not exceed 2.0 L/s*m² for that product. The manufacturer of the doors states that it is impossible to meet this requirment (they say a limit of 5.0 L/s*m² would be possible).
ASHRAE 90.1-2007, p.18: "Air leakage shall not exceed 5.0 L/s'm2 for glazed swinging entrance doors and for revolving doors and 2.0 L/s·m2 for all other products."

The automatic sliding doors will be used in vestibules. As I interpret it, the requirement is still 2 L/s*m², right?
Has anyone used automatic sliding doors that meets the requirement? Or any other suggestions to solve that problem?