Haw. Code R. § 11-39-9 - Air movement, distribution, recirculation, and removal

(a) Air movement and distribution and outdoor air supply shall be maintained without interruption during occupied hours in accordance with good engineering practice. Proper provision for balancing air distribution shall be made both in duct design and air distribution device application. Air-handling units shall operate continuously, that is without interruption, while the space is occupied except as provided in ASHRAE Standard 62.

(b) Air may be recirculated except where not permitted for hospitals and medical facilities and except, that no air from rooms with obnoxious or offensive odors or which is contaminated by other than human occupancy shall be used for recirculation or for the ventilation of another room or enclosure.

(c) Adequate provisions shall be made for air removal from the enclosure by exfiltration or by natural or mechanical exhaust. Motivating force, location of outlets and the volume of air removed through each identified outlet shall be shown on the plans.

(1) Air from occupied areas Uncontaminated by other than human occupancy and without odor may be discharged into corridors thence ventilated through toilet rooms or other auxiliary rooms.

(2) Exhaust systems serving toilet rooms or other places with which odors or similarly offensive conditions are associated shall have negative air pressure.

(3) Kitchen exhausts shall not be combined on the same ducts or fans or with any other exhausts. Clothes dryer exhausts may be combined with toilet exhausts.

(4) In a building higher than one floor, where toilets or kitchens on more than one floor are served by the same exhaust fan, the fan shall be continuously operated during periods when the building is occupied.

Notes

Haw. Code R. § 11-39-9

[Eff. JAN 31, 1983] (Auth: HRS §§ 321-9, 321-11) (Imp: HRS §§ 321-1, 321-11)