Hawaii Administrative Rules
Title 11 - DEPARTMENT OF HEALTH
Subtitle 1 - GENERAL DEPARTMENTAL PROVISIONS
Chapter 39 - AIR CONDITIONING AND VENTILATING
Section 11-39-7 - Design conditions
Current through February, 2024
(a) Outside and inside design conditions. The following design conditions shall be used for air conditioning systems which will be operated at near maximum load in daylight hours, at elevations below three thousand two hundred eighty-one feet (one thousand metres) above sea level:
| OUTSIDE | INSIDE | ||
| Dry Bulb | Wet Bulb | Dry Bulb | Relative Humidity |
| 87°F (30.6°C) or higher | 75°F (23.9°C) or higher | 78°F (25.6°C) or lower | 60% or lower |
By special application to the director the above conditions may be modified for systems whose loads peak at times when outdoor temperature is much lower than daily maximum or systems at higher altitudes, and in this case design condition shall be as agreed between the designer and the director.
(b) Design cooling load. Minimum allowances to be made in estimating the net instantaneous heat gains in a building shall be in accordance with good engineering practice.
(c) Infiltration. Infiltration air volume rate and the sensible and latent heat gains therefrom shall be determined for air conditioning systems; and where calculated infiltration rate differs from required outdoor air rate, the larger quantity shall be used for calculating the cooling load.
(d) Control. Provision for reasonable control of temperature shall be made for all air conditioning systems.
