System Sensor DH400ACDCP User Manual
Page 2
[3] Contents Of The Duct Detector Kit
1. Complete housing base and cover assembly
2. Two #10 sheet metal mounting screws
3. Two sampling tube filters
4. One test magnet
5. Drilling template
6. Two
5
/
16
˝ O-rings
7. Two rubber tube bushing seals
8. Four #6 self-tapping mounting screws for the sampling
and optional exhaust tube extension
9. One filter adapter
10. One inlet tube end plug
11. Two #10 speed nuts
NOTE: The inlet sampling tube must be ordered separately.
It must be the correct length for the width of the duct where
it will be installed. See Table 1 on page 4 to determine the
inlet tube required for different duct widths.
[4] Limitations Of Duct Detectors
WARNING
The National Fire Protection Association has established
that DUCT DETECTORS MUST NOT BE USED AS A SUB-
STITUTE FOR OPEN AREA DETECTOR PROTECTION as a
means of providing life safety. Nor are they a substitute for
early warning in a building’s regular fire detection system.
System Sensor supports this position and strongly recom-
mends that the user read NFPA Standards 90A, 72, and 101.
The DH400ACDCP Air Duct Smoke Detectors are listed per
UL 268A.
WARNING
This device will not operate without electrical power.
Frequently, fire situations may cause an interruption of
power. The system safeguards should be discussed with
your local fire protection specialist.
WARNING
This device does not sense smoke unless the ventilation
system is operating.
CAUTION
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 op-
erated within ALL electrical and environmental specifica-
tions listed in this manual. Failure to comply with these
requirements may prevent the detector from activating
when smoke is present in the air duct.
[5] Installation Sequence
Step
Page
[5.1] Verify duct air flow direction and velocity
3
[5.2] Drill the mounting holes
3
[5.3] Secure the detector housing to the duct
3
[5.4] Install the sampling tube
3
[5.5] Complete the field wiring
5
[5.6] Install the filters and check pressure differential
5
[5.7] Perform detector check
5
[5.8] Install the cover
5
D400-13-00
2
I56-0555-010R
[2] Figure 1. Exploded view of ductdetector components:
H0529-00
SAMPLING TUBE
FILTERS
CONDUIT HOLES
DUCT DETECTOR
HOUSING
TERMINAL STRIP
PC BOARD
INSULATOR
DUCT DETECTOR
COVER
SAMPLING TUBE
MOUNTING
SCREWS
DETECTOR HEAD
EXHAUST
FILTER ADAPTER
DETECTOR BASE
INLET SAMPLING TUBE
(SUPPLIED SEPARATELY)
O-RINGS
FOAM
GASKETS
HOUSING
MOUNTING SCREWS
TEST MAGNET
TUBE
END
PLUG