System Sensor INNOVAIR DH100LP - Manual (Page 2)

[5.2] Drill The Mounting Holes
Remove the paper backing from the mounting template
supplied. Affix the template to the duct at the desired
mounting location. Make sure the template lies flat and
smooth on the duct. Center punch holes A and B. Drill the
holes as indicated on the template.
[5.2.1] Sampling Tube Installation for Ducts Less
Than 1
1 ⁄
2
Feet Wide (see Figure 2)
1. Remove the front cover.
2. Slide the plastic sampling tube into the housing bushing.
3. Align the holes in the bushing with the holes in the sam-
pling tube. Make sure there are six exposed holes on the
plastic sampling tube. Secure with the #8 self-tapping
screw into the bottom hole of the permanent tube.
NOTE: The sampling tube end cap is critical to the proper
operation of the duct smoke detector. The end cap
is needed to create the proper air flow to the sensor
of the duct smoke detector.
NOTE: For ducts greater than 1 1 ⁄
2
feet in width, refer to
sections [5.4.1] and [5.4.2].
Figure 2. Sampling tubes connected to duct smoke
detector:
WARNING
For this detector to function properly, it MUST be installed
according to the instructions in this manual. Furthermore,
the detector MUST be protected from the elements and
operated within ALL electrical and environmental specifi-
cations listed in this manual. Failure to comply with these
requirements may prevent the detector from activating
when smoke is present in the air duct.
[4] Contents Of The Duct Smoke Detector Kit
1. Complete housing base and cover assembly
2. Two #10 x 1
1 ⁄
4
” sheet metal machine screws for mounting
3. Two sampling tube filters
4. One test magnet
5. Drilling template
6. Two foam gaskets
7. Four #6-self tapping mounting screws for the metal
sampling tube and optional exhaust tube extension
8. One sampling tube end cap
9. Metal sampling tube end plug
10. One plastic sampling tube
11. One #8 self-tapping screw for the plastic sampling tube
NOTE: For ducts over 1
1 ⁄
2
feet, longer sampling tubes must
be ordered to complete the installation. They must
be the correct length for the width of the duct
where they will be installed. See Table 1 on page 3
to determine the sampling tube required for differ-
ent duct widths.
[5] Installation Sequence
[5.1] Verify Duct Air Flow Direction And Velocity
Model DH100LP detectors are designed to be used in air
handling systems having air velocities of 100 to 4000 feet
per minute. Be sure to check engineering specifications to
ensure that the air velocity in the duct falls within these
parameters. If necessary, use a velocity meter (anemom-
eter) to check the air velocity in the duct.
D200-15-00 2 I56-0083-07R
[3] Figure 1: Exploded View Of Duct Detector Components
FOAM
GASKETS
PLASTIC
SAMPLING TUBE
SAMPLING TUBE
FILTERS
PLASTIC SAMPLING TUBE
SELF-TAPPING SCREW
DETECTOR
COVER
DETECTOR BOARD
CONDUIT HOLES
DETECTOR
HOUSING
TERMINAL STRIP
POWER BOARD
COVER MOUNTING
SCREWS