Kidde FX-PDD Assembly instructions

© 2020 Carrier 1 / 6 P/N 3101069-EN • REV 005 • ISS 19OCT20
FX-PDD Duct Smoke
Detector Installation Sheet
Description
The FX-PDD Duct Smoke Detector is designed for use in duct
applications where temperatures can exceed standard detector
capabilities.
The device address is set using the two rotary switches located on
the front of the unit. One device address is required.
In installations where the controls and indicators are hidden from
view, a remote test station or an LED indicator can be connected to
the detector to provide these functions.
Jumper settings
The following jumper settings determine the operation of the
detector. See Figure 6 for proper jumper location.
Table 1: JP3 jumper settings
Setting
Description
Alarm
Configures the detector for alarm latching
operation.
Supervisory
Configures the detector for supervisory
operation.
This is the factory default setting.
LED operation
Two LEDs, visible from the front of the detector, show its status.
Table 2: LEDs
LED
Description
Power LED
Off when the detector is in the alarm state.
Flashes intermittently when the detector is in
the normal state.
Alarm/active LED
Indicates the detector is in the alarm/active
state.
Installation
WARNINGS
• The duct smoke detector is not intended as a substitute for open
area protection.
• This detector does not operate without electrical power. As fires
frequently cause power interruption, discuss further safeguards
with the local fire protection specialist.
• The duct smoke detector does not operate as designed outside
of the listed electrical and environmental specifications.
• The duct smoke detector does not sense smoke unless the
ventilation system is operating and the sensor’s cover is
properly installed.
• The duct smoke detector may not operate as designed unless
installed in accordance with these instructions and all applicable
national and local codes as determined by the local authority
having jurisdiction.
Note: Read these instructions thoroughly before installing. Refer to
Application Bulletin P/N 3101107 for additional information regarding
installation instructions.
Installation guidelines
To ensure correct operation, install the duct detector using the
following guidelines:
• Install the duct smoke detector on a flat section of HVAC duct
between six and ten duct widths from any bends or obstructions.
• Install supply-side detectors at a point downstream from the
supply fan and after the air filter.
• Install return-side detectors at a point before the return air
stream is diluted by outside air.
Verifying the duct air velocity
In order to verify the airflow direction and velocity, air must be
moving through the HVAC system.
To verify the duct air velocity:
1. Drill a small hole at the point where the duct smoke detector is
being installed.
2. Using the SD-VTK Air Velocity Test Kit and a suitable air
velocity meter, verify that the air velocity in the HVAC duct falls
within the specified operating range of the detector and note
which direction the air flows.
3. If the air velocity does not fall within the specified range, relocate
the detector and seal the hole in the HVAC duct. Refer to
Application Bulletin P/N 3101107 for additional information
pertaining to installation locations.
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2 / 6 P/N 3101069-EN • REV 005 • ISS 19OCT20
Selecting an appropriate sampling tube:
• Select a sampling tube that extends at least two-thirds across
the width of the duct. Refer to Table 3 below.
• For duct widths greater than 36 inches, use a sampling tube that
is longer than the width of the duct.
• Sampling tubes are available in the following lengths:
Table 3: Sampling tubes
Model
Length (in.)
Model
Length (in.)
SD
-T8 8 SD-T42 42
SD
-T18 18 SD-T60 60
SD
-T24 24 SD-T78 78
SD
-T36 36 SD-T120 120
To assemble the detector:
1. Assemble the duct smoke detector as shown in Figure 1.
2. Rotate the air sampling tube so the inlet holes face the direction
of airflow.
3. The sampling tube is normally installed from the rear, but it can
also be installed from the front of the detector as shown in
Figure 2. This method requires that you remove the detector
cover.
Figure 1: Duct detector assembly
(1) Exhaust tube socket
(2)
Sampling tube socket
(3)
Detector
(4)
Coupling
(5) Sampling tube
(6) Plug
(7)
Thick gasket
(8)
Thin gasket
(9)
Exhaust tube
Figure 2: Sampling tube installation
(1) Sampling tube socket
(2)
Detector
(3) Sampling tube (fully assembled)
To install the detector:
1. Attach the drill template to the HVAC duct at the desired
mounting location.
2. Drill (or punch) the mounting holes where indicated.
3. Remove any rough edges from the holes.
4. When using an air sampling tube that is longer than the width of
the duct:
• Drill a 3/4 in. hole on the opposite side of the duct for the
tube to pass through.
• Cut the tube so that approximately one inch of the tube
extends through the duct. Seal the opening around the
tube with an approved duct sealant as shown in Figure 3.
Note: Support sampling tubes longer than 36 inches at both
ends of the duct. See Figure 3.
5. Mount the duct smoke detector on the HVAC duct and secure it
using the two sheet metal screws provided. See Figure 4.
7. Verify that all field wiring is free of opens, shorts, and ground
faults.
8. Make all wiring connections as shown in Figure 6.
9. Set the module address as follows:
• Use a screwdriver to adjust the two rotary switches on the
front of the module. See Figure 5.
• Set the TENS rotary switch (0 through 12) for the 10s and
100s digit.
• Set the ONES rotary switch for the 0 through 9 digit.
For example: for device address 21, set the TENS rotary switch
to 2, and then set the ONES rotary switch to 1.
For a list of detector addresses, see Table 4 on page 3.
10. Set jumper JP3 to the appropriate position. See Table 1 and
Figure 6.
11. Verify that the air pressure differential value falls within the
specified operating range of the detector in accordance with
procedures specified in “Verifying the air pressure differential”
on page 4.
12. After completing the installation of the duct smoke detector, test
the detector in accordance with procedures specified in “Testing
the duct smoke detector” on page 5 to ensure it is operating
correctly.
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(1)
(2)
(3)
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P/N 3101069-EN • REV 005 • ISS 19OCT20 3 / 6
Table 4: Detector address
Address
Panel
01 to 64
64 point control panel
01 to 127
127 point control panel
Figure 3: Sampling tube support
(1) HVAC duct
(2)
Exhaust tube
(3)
Detector
(4) Sampling tube
(5) Airflow
(6)
Plug
(7)
Sealant
Figure 4: Duct detector installation
(1) Airflow
(2)
HVAC duct
(3) Detector
(4) #10 sheet metal screws (2X)
(5)
Sampling tube
Figure 5: Address switches
(1) Insert screwdriver here
Wiring
Wire in accordance with NFPA 72 and CAN/ULC-S524. Be sure to
observe the polarity of the terminals on the terminal block as shown
in Figure 6.
(1) (2)
(3)
(4)
(5)
(6)
(7)
36 in. (0.92 m)
(1)
(2)
(3)
(5)
(4)
0
1
2
3
456
1211
10
9
8
7
09
1
2
3456
7
8
(1)
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4 / 6 P/N 3101069-EN • REV 005 • ISS 19OCT20
Figure 6: Duct detector wiring
(1) Auxiliary equipment. Power-limited unless connected to a
nonpower-limited source. If the source is nonpower-limited,
eliminate the power-limited mark and maintain a minimum of
0.25 in. (6.4 mm) space from power-limited wiring. For other
mounting methods, see enclosure and bracket installation sheets
to maintain separation of power-limited and nonpower-limited
wiring. The wire size must be capable of handling fault current from
the nonpower-limited source.
— or —
Use type FPL, FPLR, FPLP, or permitted substitute cables,
ensuring that the power-
limited cable conductors extending beyond
the jacket are separated by a minimum of 0.25 in. (6.4 mm) space
or by a nonconductive sleeve or nonconductive barrier from all
other conductors. The wire size must be capable of handling fault
current from the nonpower-limited source. Refer to NFPA 70 for
more details.
(2) Remote alarm/active indicator. See “Specifications” on page 5 for a
list of available model numbers.
(3)
Connect only one remote test station or LED indicator to the
detector. Wiring is unsupervised. Maximum wire resistance is 10
Ω
per wire.
(4)
Remote test station. See “Specifications” on page 5 for a list of
available model numbers.
(5)
Power indicator.
(6)
Alarm Indicator.
(7)
JP3 (shown in the factory default position, for supervisory mode).
(8)
Alarm position.
(9)
Supervisory position.
Testing
Verifying the air pressure differential
In order to verify air pressure differential, air must be moving through
the HVAC system.
To verify the air pressure differential:
1. Connect a suitable air pressure differential meter to the sampling
tube and exhaust tube openings as shown in Figure 7.
2. Verify that the air pressure differential reading falls within the
specified operating range of the detector. See “Specifications” on
page 5.
3. If the air pressure differential measured does not fall within the
specified operating range of the detector, make sure the sampling
tube air holes are not obstructed and are facing the HVAC system
airflow.
(1)
(5)
(6)
(2) (3)
(3) (4)
JP3
(7)
(8) (9)
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P/N 3101069-EN • REV 005 • ISS 19OCT20 5 / 6
Figure 7: Air pressure differential
(1) Airflow
(2)
Sampling tube
(3)
HVAC duct
(4) Exhaust tube opening
(5) Air pressure differential
meter
(6)
Sampling tube opening
Testing the duct smoke detector
After completing installation of the duct smoke detector, test the
detector to ensure it is operating correctly prior to leaving the site. For
details, refer to Application Bulletin P/N 3101107.
Maintenance
Replacement parts
The following table lists the replacement parts for the duct smoke
detector.
Table 5: Replacement parts
Model
Description
FX
-SDPCB PCB replacement kit for duct smoke detector
Cleaning the duct smoke detector
Clean the duct smoke detector when it becomes 80% to 99% dirty or
sooner if conditions warrant.
Caution: Before cleaning the duct smoke detector, notify the proper
authorities that the fire alarm system is undergoing maintenance and
take steps to prevent the control panel from responding to a false
alarm.
To clean the duct smoke detector:
1. Disable the detector or zone to prevent false alarms.
2. Remove the detector’s cover, and then power down the detector
by disconnecting the SLC wiring. See Figure 6.
3. Using a vacuum cleaner, clean compressed air, or a soft bristle
brush, remove loose dirt and debris from inside the detector
housing and cover.
4. Remove dirt and other contaminants from the gasket on the
detector’s cover using isopropyl alcohol and a lint-free cloth.
5. Squeeze the retainer clips on both sides of the optic housing then
lift the housing away from the printed circuit board. See Figure 8.
6. Gently remove dirt and debris from around the optic plate and
inside the optic housing.
7. Replace the optic housing and the detector cover, and then
connect the SLC wiring.
8. Test the detector and verify its sensitivity. For details, refer to
Application Bulletin P/N 3101107.
Figure 8: Duct detector cleaning
(1) Sampling tube
(2)
HVAC duct
(3)
Detector housing
(4) Optic plate
(5) Retainer clip
(6)
Optic housing
(7)
Airflow
Specifications
Communication line voltage
20 Vp-p max.
Operating current
Normal
Alarm
Inrush
45 µA
45 µA
1 mA
Common alarm relay/auxiliary
equipment
Quantity
Type
Rating
Unsupervised and power-limited
1
Form C
2.0 A at 30 VDC (resistive)
Air velocity
100 to 4,000 ft./min
Air pressure differential
0.005 to 1.00 in. of water
Smoke sensitivity range
0.79 to 2.46%/ft. obscuration
Smoke detection method
Photoelectric (light scattering
principle)
Alarm test
response time 5 seconds
Dimensions
8.70 × 5.45 × 1.90 in.
Wire size
14 to 22 AWG wire
Operating environment
Temperature
Relative humidity
32 to 122°F (0 to 50°C)
0 to 93%, noncondensing
Accessories
SD-TRM
SD-TRK
SD-MAG
SD-VTK
R-LED
Remote test-reset station, magnetic
Remote test-reset station, keyed
Test magnet kit
Air velocity test kit
Remote LED alarm indicator
(1)
(2) (3)
(4)
(5)
(6)
(1)
(2)
(3)
(4)
(5)
(6)
(7)
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Regulatory information
North American
standards
UL 268A, CAN/ULC S529-02
Contact information
For contact information, see www.kidde-esfire.com.
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