P/N A6V10330327_a_en
Siemens Industry, Inc.
Building Technologies Division
6
sealed. For custom duct widths, always use the next longest
standard size and cut down to the exact requirement.
Once the airflow direction has been determined (refer to Figure
3), insert the input and outlet tubes into the duct housing.
1.
Remove the cover from the housing.
2.
Loosen the screw and rotate the tube retainer until the
input tube is inserted and oriented properly. Ensure that the
notched end of the tube is inside the housing and that the
air input sampling tube is positioned so that the input holes
are directly facing the airflow.
3.
Once the tube is installed, rotate the retainer back into
place and tighten screw.
4.
Install the outlet tube in the remaining position. Once the
tube is installed, rotate the retainer back into place and
tighten screw.
Mounting
After securing the input and outlet tubes to the duct smoke unit,
(or initially placing the tubes through the 1¼” holes drilled or
punched in the HVAC duct to accept the input and outlet tubes
and then attaching them to the duct unit), hold the duct unit
assembly in position and use (2) # 12 X
3
/
4
” sheet metal screws
(packaged in the installation kit) to secure the duct smoke
detector to the HVAC duct sheet metal.
INPUT TUBE HOLES
FACE AIR FLOW
INSERT RED STOPPER
THIS END OF INPUT TUBE
OUTLET TUBE INSTALLED
DOWNSTREAM OF AIRFLOW
DO NOT INSERT RED STOPPER
AIR FLOW DIRECTION
DUCT WIDTH
TUBE SUPPORT ONLY FOR DUCTS GREATER THAN 3 FEET WIDE
NOTE: Mountings shown
are typical. Detectors can
be installed side, bottom
or top of duct as long as
proper tube operation and
flow/pressure performance
is maintained.
Figure 3
Sampling Tube Orientation