Chapter 2: Prerequisites
Product Service 1-800-522-7658
7
Original instructions
Proper blower selection can be determined from these exhaust requirements and
the total system static pressure loss. Contact Labconco Customer Service for
assistance in sizing a blower system. Refer to
Appendix H: VAV Open Area
Guidelines
to properly assess the fume hood area opening, allowing the variable
Projected Airflows and Static Pressure
Eco Energy Saving Air Foil
Flush Air Foil
Hood Type
Face
Velocity (fpm) Airflow Volumetric Rate (CFM) @
Airflow Volumetric Rate (CFM) @
Sash at
Sash at 62.5% Static Pressure (inches of water)
Static Pressure (inches of water)
Full open
open
4'
5'
6'
8'
4'
5'
6'
8'
at 28"
at 18"
Hood
Hood
Hood
Hood
Hood
Hood
Hood
Hood
XL
100
160
725, 0.27"
955, 0.34" 1180, 0.46" 1640, 0.31"
760, 0.28" 1000, 0.36" 1235, 0.49" 1715, 0.33"
80
128
580, 0.17"
765, 0.22"
945, 0.29"
1310, 0.20"
605, 0.18"
800, 0.23"
990, 0.31" 1370, 0.21"
60
96
435, 0.10"
575, 0.12"
710, 0.17"
985, 0.11"
455, 0.10"
600, 0.13"
745, 0.18" 1030, 0.12"
50
80
365, 0.07"
480, 0.09"
590, 0.11"
820, 0.08"
380, 0.07"
500, 0.09"
620, 0.12"
860, 0.08"
40
64
290, 0.04"
380, 0.05"
470, 0.07"
655, 0.05"
305, 0.05"
400, 0.06"
495, 0.08"
685, 0.05"
Eco Energy Saving Air Foil
Flush Air Foil
Hood Type
Face
Velocity (fpm) Airflow Volumetric Rate (CFM) @
Airflow Volumetric Rate (CFM) @
Sash at
Sash at
Static Pressure (inches of water)
Static Pressure (inches of water)
62.50%
Full open
4'
5'
6'
8'
4'
5'
6'
8'
open at 18"
at 28"
Hood
Hood
Hood
Hood
Hood
Hood
Hood
Hood
XL
100
62
450, 0.11"
595, 0.13"
735, 0.18"
1025, 0.12"
485, 0.11"
640, 0.14"
790, 0.19" 1100, 0.13"
80
50
365, 0.07"
480, 0.09"
590, 0.11"
820, 0.08"
390, 0.07"
515, 0.08"
635, 0.11"
880, 0.08"
60
38
270, 0.04"
360, 0.05"
440, 0.07"
615, 0.04"
290, 0.04"
385, 0.05"
475, 0.07"
660, 0.05"
Projected Airflows and Static Pressure
Eco Energy Saving Air Foil
Flush Air Foil
Hood Type
Face
Velocity (fpm) Airflow Volumetric Rate (CFM) @
Airflow Volumetric Rate (CFM) @
Sash at
Sash at 62.5% Static Pressure (inches of water)
Static Pressure (inches of water)
Full open
open
4'
5'
6'
8'
4'
5'
6'
8'
at 28"
at 18"
Hood
Hood
Hood
Hood
Hood
Hood
Hood
Hood
XL
100
160
705, 0.25"
930, 0.32" 1150, 0.44" 1600, 0.30"
740, 0.26"
975, 0.34" 1205, 0.47" 1675, 0.32"
W/Bypass
80
128
565, 0.16"
745, 0.21"
920, 0.28"
1280, 0.19"
590, 0.17"
780, 0.22"
965, 0.30" 1340, 0.21"
Block
60
96
425, 0.09"
560, 0.12"
690, 0.16"
960, 0.11"
445, 0.09"
585, 0.12"
725, 0.17" 1005, 0.12"
50
80
350, 0.06"
465, 0.08"
575, 0.11"
800, 0.08"
370, 0.07"
490, 0.09"
605, 0.12"
840, 0.08"
40
64
280, 0.04"
370, 0.05"
460, 0.07"
640, 0.05"
295, 0.04"
390, 0.05"
480, 0.08"
670, 0.05"
Eco Energy Saving Air Foil
Flush Air Foil
Hood Type
Face
Velocity (fpm) Airflow Volumetric Rate (CFM) @
Airflow Volumetric Rate (CFM) @
Sash at
Sash at
Static Pressure (inches of water)
Static Pressure (inches of water)
62.50%
Full open
4'
5'
6'
8'
4'
5'
6'
8'
open at 18"
at 28"
Hood
Hood
Hood
Hood
Hood
Hood
Hood
Hood
XL
100
62
440, 0.10"
580, 0.12"
720, 0.17"
1000, 0.12"
475, 0.10"
625, 0.13"
775, 0.18" 1075, 0.12"
W/Bypass
80
50
350, 0.06"
465, 0.08"
575, 0.11"
800, 0.08"
380, 0.07"
500, 0.09"
620, 0.12"
860, 0.08"
Block
60
38
265, 0.04"
350, 0.05"
430, 0.06"
600, 0.04"
285, 0.04"
375, 0.05"
465, 0.07"
645, 0.05"
Airflows and Static Pressure
Eco Energy Saving Air Foil
Hood Type
Face
Velocity (fpm) Airflow Volumetric Rate (CFM) @
Sash at
Sash at 62.5% Static Pressure (inches of water)
Full open
open
10'
12'
16'
at 28"
at 18"
Hood
Hood
Hood
XL
100
160
2100, 0.45" 2560, 0.62" 3500, 0.37"
W/Bypass
80
128
1680, 0.28" 2050, 0.39" 2800, 0.23"
Block
60
96
1260, 0.16" 1535, 0.22" 2100, 0.13"
50
80
1050, 0.11" 1280, 0.16" 1750, 0.09"
40
64
840, 0.07" 1025, 0.10" 1400, 0.06"
Eco Energy Saving Air Foil
Hood Type
Face
Velocity (fpm) Airflow Volumetric Rate (CFM) @
Sash at
Sash at
Static Pressure (inches of water)
62.50%
Full open
10'
12'
16'
open at 18"
at 28"
Hood
Hood
Hood
XL
100
62
1300, 0.17" 1585, 0.24" 2170, 0.14"
W/Bypass
80
50
1050, 0.11" 1280, 0.16" 1750, 0.09"
Block
60
38
800, 0.06"
970, 0.09" 1330, 0.05"