installation instructions for the duct smoke detector

INSTALLATION INSTRUCTIONS FOR THE DUCT SMOKE DETECTOR
These are Installation Instructions (DWG.# HA-06-184) for the Analog Duct Housing customized as follows:
FAD-325
Duct Housing with the FAD-325-DH Analog Photoelectric Smoke Sensor*
FAD-325-V2F
Duct Housing with the FAD-325-V2F-DH Analog Photoelectric Smoke Sensor*
FAD-325-R
Duct Housing with the FAD-325-DH Analog Photoelectric Smoke Sensor & Relays*
FAD-325-V2F-R
Duct Housing with the FAD-325-V2F-DH Analog Photoelectric Smoke Sensor & Relays*
*These products are compatible exclusively with fire alarm control panels that utilize BOSCH's protocol, DCP.
I. LOCATION REQUIREMENTS
STOPPER
TEMPLATE
Duct Smoke Detector Location Requirements: To prevent false alarms the
detectors should not be mounted in areas of extreme high or low temperatures, in
areas where high humidity exist, or in areas where duct air may contain gases or
excess dust. The duct detector should, when possible, be located a minimum of six
duct widths downstream from a source of turbulence (bends, inlets, or deflection
plates). At these locations, air flow is less turbulent and the air/smoke mixture
should be more homogenous.Refer to NFPA 90A, 72, and 101 for more information.
See Figure 1A and 1B.
Exception: Where it is physically impossible to locate the duct detector accordingly,
the duct detector can be positioned closer than six duct widths, but as far as
possible from inlets, bends, or deflection plates
.
AIR FLOW
FOR THIS
ILLUSTRATION
Bend or
Other
Obstruction
INTAKE
SAMPLING
TUBE
EXHAUST
TUBE
6 Duct
Widths
Minimum
FIGURE 1A
SET
SCREW
CONNECTORS
II. MOUNTING THE DETECTOR
DUCT MOUNTING
SCREWS
A. DUCT PREPARATION
1. Remove paper backing from mounting template AP 121 (packaged in installation kit) and affix to
duct at desired location.
2. Using template as a guide, drill 4 mounting holes (3/32" diameter) for duct mounting screws (4 #12
x 1/2" sheet metal screws packaged in installation kit). Drill or punch holes for sampling tubes in air
ducts (1-3/8" diameter), using template as a guide. Clean all holes.
TOP OF DUCT HOUSING
F IGURE 1B: DUCT HOUSING MOUNTING
INSERT STOPPER AT THIS END OF
INTAKE TUBE
B. VERIFY AIR FLOW AND DIRECTION
The Duct Detectors are designed for use in ducts where the air velocities are from 300 to 4000 feet per
minute. Verify this by checking specifications of installation and if necessary, use an Alnor Model
6000P velocity meter (or equivalent) to check the air velocity. See Figure 2 for sampling tube
orientation to air flow direction.
EXHAUST
TUBE
C. SAMPLING TUBE ASSEMBLY (See Figure 2)
The sampling tubes may be ordered to a desired length or ordered in one of 3 standard lengths and cut
per requirements. The intake sampling tube consists of a piece of steel piping with a series of holes
drilled the entire length of the tube and should extend the entire width of the duct. The holes must be
facing into the air flow (see Figure 2). The exhaust tube consists of a piece of steel piping
approximately 7-1/2" long.
INTAKE SAMPLING TUBES STANDARD LENGTHS:
FAA-325-2.5
FAA-325-5
FAA-325-10
WIDTH OF DUCT
AIR FLOW
INTAKE
TUBE
INTAKE
SAMPLING
TUBE TO BE
SUPPORTED
WHERE THE
WIDTH OF
THE DUCT IS
GREATER
THAN 3 FEET.
TOP OF DUCT HOUSING
AIR FLOW
INTAKE
TUBE
EXHAUST
TUBE
TOP OF DUCT HOUSING
FIGURE 2 SAMPLING TUBE ORIENTATION
For duct widths of 1.0' to 2.5'
For duct widths of 2.5' to 5.0'
For duct widths of 5.0' to 10.0'
1. Cut the intake sampling tube to the desired length.
2. Firmly insert the stopper (packaged in installation kit) in the end of the INTAKE sampling tube.
D. MOUNT SAMPLING TUBES (See Figure 2)
1. Sampling tube connectors are equipped with set screws, which allow the tubes to be mounted
only in directions shown in Figure 2. Establish proper orientation considering airflow direction.
2. Insert intake and exhaust tubes into connectors, align set screw to set screw hole in tubes and
tighten firmly.
EXHAUST TUBE
HOLE &
CONNECTOR
INTAKE TUBE
HOLE &
CONNECTOR
LOW PRESSURE
SIDE
HIGH PRESSURE
SIDE
E. MOUNT THE DUCT HOUSING (See Figure 1B & 2)
Move duct housing/sampling tube assembly to desired location. Use 4 mounting screws (4 #12 x 1/2" sheet
metal screws, packaged in installation kit) to secure the housing to the air duct.
F. VERIFY AIR SAMPLING (See Figure 3)
To verify proper sampling of air, use a Dwyer Model 4000 differential pressure gauge (or equivalent).
See Figure 3 for gauge connections. The pressure differential between input sampling tube and
exhaust tube should be greater than 0.01" of water and less than 1.2" of water.
FIG. 3 AIR SAMPLING
VERIFICATION
DWYER #4000 DIFFERENTIAL
PRESSURE GAUGE (OR
EQUIVALENT) WITH TUBING
AND SIZE 0 RUBBER STOPPERS
(HA PART# 0700-01118).
III. ELECTRICAL INSTALLATION
A. GENERAL INFORMATION
Wiring must conform to applicable local codes, ordinances and regulations covering these types of devices. Wire the detectors according to the engineering drawings for the
particular job requirements. These detectors are not intended for open area protection, nor should they be used for open air protection. Refer to NFPA 90A and NFPA 72 for
general and additional information on Duct Smoke Detectors concerning operation and installation. Terminals are suitable for up to #14 gauge wire.
B. DETECTOR WIRING
1. With power source de-energized and the smoke detector not installed, wire all connections per engineering drawings.
Refer to the applicable figures below depending on your duct housing model number.
2. With all wiring in place, install the detector head.
3. Energize the duct detector.
Models FAD-325/FAD-325-V2F/ FAD-325-R and FAD-325-V2F-R
These duct sensors are analog addressable and can be calibrated by a U.L. Listed analog control panel. See the FACP Installation
Instructions for specific directions.
Note: All duct detector models can be tested with actual smoke. Remove the duct detector cover. Test the detector head by lighting a piece of cotton
clothesline. and placing it approximately 3 inches from the detector head. Blow across the lit end of the clothesline toward the detector. The LEDs on the
detector should illuminate within one minute. After performing this test sequence, reinstall the duct detector cover.
BOSCH SECURITY SYSTEMS, INC.
130 Perinton Parkway
Fairport, NY 14450 USA
BOSCH Security Systems, Inc. * FAD-325 Installation Instructions (HA-06-184. P/N 1700-11140 Page 1 of 2)
Specifications subject to change without notice. * February 2017
III. ELECTRICAL INSTALLATION, continued
D. WIRING DIAGRAMS,continued
FAD-325/FAD-325-V2F WIRING DIAGRAM
The FAD-325, FAD-325-V2F, FAD-325-R and
FAD-325-V2F-R are not self-contained sensors.
This product is compatible only with fire alarm
control panels that utilize BOSCH's Digital
Communications Protocol, DCP.
For example the FPA-1000 Family of Control Panels
FAD-325-DH/FAD-325-V2F-DH
ANALOG SENSOR
L1
L2
-R
+R
1
2
3
4
(+)
THE D304 REMOTE ALARM LED
WIRING MUST HAVE POLARITY AS
SHOWN 24 VDC (8mA MAX.)
TO NEXT
SENSOR
S (+)
LOOP INTERFACE
UL LISTED
CONTROL PANEL
(-)
STANDBY 350µA
ALARM 800µA
SC (-)
FAD-325-R/FAD-325-V2F-R WIRING DIAGRAM
FAN SHUTDOWN EXAMPLE
The Bosch D304/D305 Remote Duct Annunciator and the Bosch
FAD-325-R/FAD-325-V2F-R Duct Detectors are compatible when
wired as the following.
OBSERVE POLARITY
INPUT VOLTAGE
24 V.D.C.
FAN
SUPPLY VOLTAGE
10 mA Standby
55mA Alarm
+
-
ADDRESSABLE
LOOP
1
2
+
3
4
-
REMOTE
ALARM
LED
5
6
REMOTE
PILOT LED
UL LISTED
CONTROL PANEL
7
8
9
10
11
12
+
NC
C
NO
ALARM CONTACTS
10.0A @ 250VAC
NC
C
NO
ALARM CONTACTS
10.0A @ 250VAC
REMOTE TEST
SWITCH
(Test function only. does not reset.)
S (+)
A.A.
CONTROL
PANEL
SC (-)
ANALOG ADDRESSABLE
FIELD LOOP WIRING
TO NEXT SENSOR
OR RETURN
TO CONTROL PANEL
Terminate Remote Accessories as indicated above (if required).
This is not a self-contained stand alone detector.
A U.L. Listed Analog Addressable Fire System is required.
Common functions include one or all of the following:
* Remote common alarm indication, remote pilot indication, remote common reset, common shutdown and common visual indication.
* Common fault indication (when green pilot LED is extinguished) cannot be achieved on the FAD-325 Duct Units. Individual Remote
Pilot LED's must be installed to monitor detector head or power source removal for each unit.
* In the event of an alarm, the detector head and duct unit alarm (Red) LED's will be illuminated. All remaining duct unit alarm LED's will
not be illuminated. All remote alarm LED's fitted to the duct units will be illuminated when any of the units go into alarm. Only the duct
unit in alarm will permit resetting of the system from the built in test/reset switch on that particular duct unit.
* A common Remote reset switch will reset all detectors.
BOSCH Security Systems, Inc. * FAD-325 Installation Instructions (HA-06-184. P/N 1700-11140 Page 2 of 2)
Specifications subject to change without notice. * February 2017
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