Section 27-807. Air supply

(a)  Oil  fuels. The air supply for equipment
  burning fuel oil  shall  comply  with  the  requirements  in  applicable
  standards  in  reference standard RS-14. Ventilation shall be capable of
  providing at least thirty-six cfm of air for each gallon of oil per hour
  required to fire the equipment to gross output.
    (b) Gas fuels. The air supply for equipment burning gas  shall  comply
  with the requirements of article sixteen of this subchapter.
    (c)  Solid  fuels.  The  air  supply for equipment burning solid fuels
  shall comply with those required for  burning  fuel  oil  based  on  Btu
  equivalent of the solid fuel.
    (d)  Mechanical  ventilation.  If  the  ventilation for the purpose of
  combustion is supplied mechanically, the  ventilating  system  shall  be
  electrically  interlocked  with the burner so that when the burner is in
  operation, the ventilating system shall maintain the room in  which  the
  equipment is located at a pressure not less than the outdoor atmospheric
  pressure.