Commissioning Instructions

Before You Begin
Fume Hood Specific Sash Setup and Calibration
6 | 10
Siemens Industry, Inc.
Restricted
Vertical Sash Fume Hood with Bypass Area Open and Closed.
11.
Open sash 1 until the top edge is aligned with top edge of bypass and close
sash 2. Measure the opening between sashes in inches (cm) and set
BYPASS HGHTA to this value.
12.
Open sash 5 until the top edge is aligned with top edge of bypass and close
sash 6. Measure the opening between sashes in inches (cm) and set
BYPASS HGHTB to this value.
13.
If there is no restriction on either bypass, leave BYPASS OPENA and
BYPASS OPENB at their 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 each bypass area. Set BYPASS OPENA
and BYPASS OPENB to the appropriate value.
Example Vertical Sash Fume Hood with Fixed Area.
14.
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.
15.
If the fume hood has a fixed panel in the sash opening of Segment A, 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 A.
Measure the height of the fixed panel and enter the value into FPANEL HGT
A. Repeat step 15 for Segment B.