Labconco Protector XL Floor-Mounted (Walk-In) Laboratory Fume Hoods 1128 Series - Manuel (Page 13)

Chapter 2: Prerequisites
Product Service 1-800-522-7658 9
Original instructions
Proper blower selection for vertical and horizontal floor-mounted hoods 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.
Projected Airflows and Static Pressure
Hood Type Face Velocity (fpm) Airflow Volumetric Rate (CFM) @
Vertical
Top Sash Top Sash Static Pressure (inches of water)
Floor
Full open open 62.5% 4' 5' 6' 8'
Mount
at 64" at 54" Hood Hood Hood Hood
Walk-In
100 160 725, 0.27" 955, 0.34" 1180, 0.46" 1640, 0.31"
XL
80 128 580, 0.17" 765, 0.22" 945, 0.29" 1310, 0.20"
W/Bypass
62.5 100 450, 0.11" 595, 0.13" 735, 0.18" 1025, 0.12"
Block
60 96 435, 0.10" 575, 0.12" 710, 0.17" 985, 0.11"
50 80 365, 0.07" 480, 0.09" 590, 0.11" 820, 0.08"
40 64 290, 0.05" 380, 0.06" 470, 0.08" 655, 0.05"
38 60 270, 0.04" 360, 0.05" 440, 0.07" 615, 0.04"
Note: Bottom Sash is closed and
only opened for loading.
Projected Airflows and Static Pressure
Doors Open 2 Doors 1 Door 1 Door 1 Door
Hood Type Face Velocity (fpm) Airflow Volumetric Rate (CFM) @
Horizontal Horizontal
Static Pressure (inches of water)
Floor
Sash at 8' 10' 12' 16'
Mount
Full Open Hood Hood Hood Hood
Walk-In
XL
100 2150, 0.53" 1450, 0.22" 1765, 0.30" 2400, 0.18"
W/Bypass
80 1720, 0.34" 1160, 0.14" 1410, 0.19" 1920, 0.12"
Block
2 Doors 1 Door 1 Door 1 Door
Open Open Open Open