Commissioning Instructions

Before You Begin
Fume Hood Specific Sash Setup and Calibration
6 | 11
Siemens Industry, Inc.
Restricted
Top Frame Measurement with Air Foil Removed.
7.
Measure the height of the top frame of the sash in inches (cm). The sash
frame holds the horizontal sash panels and occupies the outer edges of the
fume hood opening. Set TOP FRAME to this measured value.
Vertical Sash Fume Hood with Bypass Area Open and Closed.
8.
Open the sash until the top edge of the vertical sash is aligned with the top
edge of the bypass area, closing the bypass area. Measure the height of the
sash opening in inches (cm). Set BYPASS HGHT to this value.
9.
If there is no restriction on the bypass, leave BYPASS OPEN at the default
(100%). If the bypass area has an airflow restrictor covering the open area,
such as a perforated grille or louvers, estimate the open percentage of the
bypass area. Set BYPASS OPEN to the appropriate value.
10.
Measure the height of the vertical sash in inches (cm). Set VSASH HGHT1
to this value.
11.
Measure the fixed area of the fume hood in square feet (square meters).
Any fume hood leakage must be accounted for in this measurement. Set
FIXED AREA to this value.
NOTE: The fixed area of the fume hood is an area that remains open
regardless of sash position or movement. For example, most fume hoods
have an intake gap under the lower airfoil and above the cabinet of the fume
hood (typically a 1 inch gap). Also include 1% of the maximum open face
area in this calculation for other open areas, such as the space between the
sash and the track, and leakage.
12.
If the fume hood has a fixed panel in the sash opening, locate the position of
the panel by measuring from the bottom of the sash opening to the bottom
of the fixed panel and enter the value into FPANEL POS. Measure the
height of the fixed panel and enter the value into FPANEL HGT.