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Siemens HFPO-11 Installation Manual page 2

Photoelectric detector

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tivity. For open area 0-1200 ft/min applications, use the appropri-
ate application from the ASD application list. Use the ASD duct
application for 300-4000 ft/min applications a) in above-ceil-
ing and under-floor plenums, b) inside an air duct, and c) in an
air duct housing using sampling tubes. Follow detector spac-
ing and location requirements in NFPA 72 Chapter 5 for High Air
Movement Areas and Control of Smoke Spread.
When installing SIEMENS Model HFPO-11 in existing instal-
lations with an existing duct detector housing, order an
AD-11UK Air Duct Upgrade Kit DA-304, P/N 500-695967 and
use it in that installation. This kit includes the required hous-
ing cover, P/N 305-095676. Do not use SIEMENS Model
HFPO-11 with any other air duct cover.
For air duct and open area applications, the
HFPO-11 smoke sensitivity range is indicated on
its nameplate.
OPERATION
LED Indicators
The SIEMENS Model HFPO-11 contains an LED indicator ca-
pable of flashing either one of three distinct colors: green,
yellow, or red. During each flash interval, the microprocessor-
based detector checks the following:
• For smoke in its sensing chamber
• That its smoke sensitivity is within the range indi-
cated on the nameplate label
• That its critical smoke sensing electronics are
operating.
Based on the results of these checks, the LED indicator flashes
the following:
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DETECTOR PROGRAMMING
Each detector must be programmed to respond to a unique
system address.
• To program the detector address, use the SIEMENS
Model DPU Device Programming Unit. Refer to the
DPU Manual, P/N 315-033260.
Siemens Building Technologies
Fire Safety
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• Record the loop and device number (system address)
for the detector on the detector label and on the base
to prevent installing the detector in the wrong base.
The optional DPU label printer can be used for this
purpose.
WIRING
Detector bases for SIEMENS Model HFPO-11 should be con-
nected as shown in Figure 2.
Detector Mounting
To ensure proper installation of the detector head into the base,
be sure the wires are properly dressed at installation:
• Position all wires flat against the base.
• Take up all slack in the outlet box
• Route wires away from connector terminals.
To Install Detector Head:
• Align LED in detector with LED symbol on base and
insert detector into base.
• Rotate detector counterclockwise while gently press-
ing on it until the detector seats fully into base.
• Then rotate the detector clockwise until it stops and
locks in place. Insert optional locking screw (Order
SIEMENS Model LK-11).
To Remove Detector Head:
• Loosen locking screw, if installed. Then rotate the de-
tector counter clockwise until stop is reached.
• Pull detector out of base.
DETECTOR TESTING
Only qualified service personnel should test. To assure proper
operation of the detector, both the Sensitivity and Functional
Test should be conducted. The minimum test schedule may be
found in the current edition of NFPA 72 for installations in the
U.S., and CAN/ULC-S537 , The Verification of Fire Alarm Systems,
for installations in Canada.
Sensitivity Measurement
The sensitivity of HFPO-11 detectors can be tested individu-
ally using the DPU. Refer to the DPU Manual, P/N 315-033260.
Functional Test
Perform a functional (Go, No-Go) test by activating the detec-
tor using SIEMENS Test Gas, P/N 315-282747 , following the
instruction on the label. This test is simply used to ensure
that smoke can enter the sensing chamber and alarm the
control panel when the detector reaches the programmed
obscuration (concentration) level.
The HFPO-11 detectors can also be tested individually using
the DPU. Refer to the DPU Manual, P/N 315-033260.
2
P/N 315-034800-1

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