Commissioning Instructions

Table Of Contents
Before You Begin
Fume Hood Specific Sash Setup and Calibration
17
Siemens Industry, Inc. Start-up Procedures 140-1321
Restricted 2015-11-04
NOTE: The bypass area of the fume hood is an opening that increases when
the sash closes and decreases when the sash opens.
7.
Skip this step unless there is a special requirement on the job - the default will
be used.
If the bypass area has an airflow restrictor covering and flush with the open
area, such as a perforated grille or louvers, estimate the percentage of the
bypass area that is open. Set BYPASS OPEN to this value. If there is no
restrictor, set BYPASS OPEN to
100
, this value applies to the majority of fume
hoods
8.
Measure the fixed area of the fume hood in square feet (m2). 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.
Vertical Sash Fume Hood with Fixed Area.
9.
Set CAL SASH NUM to
1
.
10.
Set CAL SASH LOC to
MIN
for minimum opening.
11.
Close the sash door.