The minimum airflow for Type I hoods used for low-temperature appliances such as medium-to-low temperature ranges, roasters, roasting ovens, pastry ovens and appliances approved for use under a Type II hood, such as pizza ovens, shall be determined as follows:
Number of exposed sides | Formula | |
For SI: | ||
4 (island or central hood) | Q = 75A | Q = 0.38A |
3 or less | Q = 50A | Q = 0.25A |
Alternate formula | Q = 50PD | Q = 0.25PD |