(Effective until March 16, 2024)
Section 1106—Machinery room, special requirements.
1106.5.2 Emergency ventilation system. An emergency ventilation system shall be provided at the minimum exhaust rate specified in ASHRAE 15 or Table 1106.5.2. Shutdown of the emergency ventilation system shall be by manual means.
Table 1106.5.2
MINIMUM EXHAUST RATES
Refrigerant | Q(m/sec) | Q(cfm) |
R32 | 15.4 | 32,600 |
R143A | 13.6 | 28,700 |
R444A | 6.46 | 13,700 |
R444B | 10.6 | 22,400 |
R445A | 7.83 | 16,600 |
R446A | 23.9 | 50,700 |
R447A | 23.8 | 50,400 |
R451A | 7.04 | 15,000 |
R451B | 7.05 | 15,000 |
R1234yf | 7.80 | 16,600 |
R1234ze(E) | 5.92 | 12,600 |
[Statutory Authority: RCW
19.27.031 and
19.27.074. WSR 20-03-041, § 51-52-1106, filed 1/8/20, effective 7/1/20.]
(Effective March 16, 2024)
Section 1106—Machinery room, special requirements.
1106.4.2 Emergency ventilation system. An emergency ventilation system shall be provided at the minimum exhaust rate specified in ASHRAE 15 or Table 1106.4.2. Shutdown of the emergency ventilation system shall be by manual means.
Table 1106.4.2
MINIMUM EXHAUST RATES
Refrigerant | Q(m/sec) | Q(cfm) |
R32 | 15.4 | 32,600 |
R143A | 13.6 | 28,700 |
R444A | 6.46 | 13,700 |
R444B | 10.6 | 22,400 |
R445A | 7.83 | 16,600 |
R446A | 23.9 | 50,700 |
R447A | 23.8 | 50,400 |
R451A | 7.04 | 15,000 |
R451B | 7.05 | 15,000 |
R1234yf | 7.80 | 16,600 |
R1234ze(E) | 5.92 | 12,600 |
[Statutory Authority: RCW
19.27.031 and
19.27.074. WSR 23-23-105, § 51-52-1106, filed 11/15/23, effective 3/16/24; WSR 20-03-041, § 51-52-1106, filed 1/8/20, effective 7/1/20.]