Service and Parts Manual (2019, 2020, 2021, 2022)
42 PB
SPECIFICATIONS
ESP (External Static Pressure) chart (Duct Type) 12k
High
Middle
Low
Rated
Limit
(Pa)
0
0.04 (10)
0.08 (20)
0.12 (30)
0.16 (40)
0.2 (50)
0.24 (60)
0.28 (70)
0.32(80)
High
Middle
Low
Rated
limit
Externalstaticpressure inH20 (pa)
Standard  ESP Chart ( 0 Pa)
0
0.04 (10)
0.08 (20)
0.12 (30)
0.16 (40)
0.20 (50)
0.24 (60)
0.28 (70)
0.32 (80)
0.36 (90)
0.4 (100)
320  250   390
Airflow rate  (CFM)
High
Middle
Low
limit
Rated
High  E SP Chart (5 0 Pa)
210   280  
   350  
 (CFM)
70 140 420
110
180  460  530
External static pressure inH20 (pa)
Figure 228










