Appendix H: Vav Open Area Guidelines - Labconco Protector XL 1110 Series User Manual

Original instructions
A
PPENDIX
VAV O
G
UIDELINES
When integrating a Labconco fume hood into a variable air volume (VAV)
mechanical system, properly assessing the area opening of the fume hood is
critical to ensure correct controller calibration for maintaining face velocity across
all sash positions. Depending on your brand of VAV controller, you may be
prompted to enter different information to arrive at this correct area.
To simplify this requirement, Labconco offers the following step-by-step
procedure to ensure you have the correct information.
1. Locate the serial tag for your fume hood; usually on the lower right of the
sash glass.
2. Move to the section of the document below specific to your model
number.
Model numbers beginning 111, 110, 100
1. Determine the free opening area
a. Width
b. Height*
Product Service 1-800-522-7658
H
A
PEN REA
i. Measure the interior width of the
fume hood just behind the plane of
the sash glass and enter that here:
Width Opening _______________
inches = A
i. Measure the vertical distance
between the top of the lower
airfoil sill and the bottom of the
sash handle, and enter that here:
Vertical Opening _______________ inches = B
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