18-28-1105.4 Openings.

   Openings to other parts of the building that permit passage of escaping refrigerant to other parts of the building are prohibited. Ducts and air handlers in the machinery room that operate at a lower pressure than the room shall be sealed to prevent any refrigerant leakage from entering the airstream.

   Exceptions:

      1.   Egress doors serving the machinery room.

      2.   Access doors and panels in air ducts and air-handling units, provided that such openings are gasketed and tight fitting.