Page 1
H500-03-00 1 I56-475-09R
Honeywell, Inc., 1500 W. Dundee Rd., Arlington Heights, IL 60004
14506873-001 Intelligent Air Duct
Smoke Detector Housing
Installation Instructions
This detector must be installed in compliance with the system installation manual. The installation must meet the requirements of the local Authority Having Jurisdiction (AHJ). The detector offers maximum performance when installed in compliance with the National Fire Protection Association (NFPA); see NFPA Standards 90A, 72, and 101. The National
Electrical Manufacturers Association (NEMA) publishes detailed information on detector spacing, placement, zoning, and
special applications. The Guide for Proper Use of Smoke Detectors in Duct Applications is available from NEMAat 2101
L Street NW, Washington DC 20037.
NOTICE: This manual should be left with the owner/user of this equipment.
IMPORTANT: This detector must be tested and maintained regularly following NFPA 72 requirements. The detector
should be cleaned at least once a year.
TABLE OF CONTENTS
GENERAL DESCRIPTION ..................................................................................................................................................1
Contents of the Duct Detector Housing Kit ......................................................................................................................2
INSTALLATION SEQUENCE ..............................................................................................................................................3
Verify Duct Air Velocity......................................................................................................................................................3
Drill the Mounting Holes....................................................................................................................................................3
Mount Duct Housing..........................................................................................................................................................3
Install the Inlet Tube ..........................................................................................................................................................4
Ducts Less Than 8 ft. (244 cm) Wide............................................................................................................................4
Ducts More Than 8 ft. (244 cm) Wide ..........................................................................................................................5
Interim Modification of Inlet Tube ..................................................................................................................................5
Field Wiring ......................................................................................................................................................................5
Wiring Diagram..................................................................................................................................................................6
Accessory Wiring ..............................................................................................................................................................6
2-Wire Application Notes ..................................................................................................................................................7
Install Filters......................................................................................................................................................................7
TEST PROCEDURES..........................................................................................................................................................8
Air Flow and Smoke Entry ................................................................................................................................................8
Alarm Tests........................................................................................................................................................................8
Magnet Test....................................................................................................................................................................8
Remote Test Station ......................................................................................................................................................8
Sensitivity ..........................................................................................................................................................................9
Trouble Test ......................................................................................................................................................................9
PERIODIC MAINTENANCE REQUIREMENTS ..................................................................................................................9
Photoelectronic Sensor Cleaning Procedure..................................................................................................................10
Ionization Sensor Cleaning Procedure ..........................................................................................................................10
SPECIFICATIONS..............................................................................................................................................................10
Auxiliary Relay Contacts ................................................................................................................................................11
Accessories ....................................................................................................................................................................1 1
Programming Requirements............................................................................................................................................11
DETECTOR TEST LOG ....................................................................................................................................................12
GENERAL DESCRIPTION
An HVAC system supplies conditioned air to virtually every area of a building. Smoke introduced into this air duct system
will be distributed to the entire building. Smoke detectors designed for use in air duct systems are used to sense the presence of smoke in the duct.
Page 2
Power 120 VAC (102 - 132) 240 VAC (204 - 264) 24 VAC (20.6 - 26.4)
24 VDC (20 - 30)
Requirements mA rms MAX. mA rms MAX. mA rms MAX.
mA DC MAX.
Device
Standby Alarm Standby Alarm Standby
Alarm Standby Alarm
14506873-001
44 52 25
30
65
182 26 87
BRKPA400*
-- 3 --
1.5
--
29 -- 15
SSDRA400ZA*
-- 1.5 --
1 -- 17.3 -- 10
SSDRTS451/SSDRTS451KEY*
-- 1.5 --
1 -- 17.3 -- 10
SSDRTS451**/SSDRTS451KEY
11.5 13 5.5
6.5 140 157 95 103
The 14506873-001 Air Duct Detector Housings are used with Honeywell’s model TC807A ionization detector heads and
model TC806A photoelectronic detector heads (purchased separately). These two smoke detection methods are combined with an efficient housing design that samples air passing through a duct and allows detection of a developing hazardous condition. When sufficient smoke is sensed, an alarm signal is initiated at the fire control panel monitoring the
detector, and appropriate action can be taken to shut off fans and blowers, change over air handling systems, etc. This
can prevent the distribution of toxic smoke and fire gases throughout the areas served by the duct system.
The 14506873-001s are built to operate on 120/240 VAC or 24 VAC/DC. Two form-C (SPDT) sets of relay contacts are
available for control purposes. Two LEDs on each detector latch on to provide a local alarm indication. Remote alarm
indication is made possible by utilizing the auxiliary alarm output (Figure 5). The duct detector can be tested and alarm
can be reset by using the correct respective code commands from the panel. See panel instructions for details.
CONTENTS OF THE DUCT DETECTOR HOUSING KIT
The 14506873-001 Air Duct Detector Housings consist of the following items: (See Figure 1.)
See Note 1 for Inlet Sampling
Tube and Detector Supply
information.
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-inch O-rings.
7. Two foam gaskets.
8. Four #6 self-tapping mounting
screws for the sampling tube.
9. One filter adapter.
10.One inlet tube end plug.
11. Two #10 speed nuts.
Note 1: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 to determine the inlet tube required for different duct widths. A smoke detector
head (TC807A for ionization or TC806A for photoelectronic) must be ordered separately.
H500-03-00 2 I56-475-09R H500-03-00 11 I56-475-09R
A78-2448-00
Figure 1.
SAMPLING TUBE
FILTERS
CONDUIT HOLES
DUCT DETECTOR
HOUSING
PC BOARD
INSULATOR
DUCT DETECTOR
COVER
SAMPLING TUBE
MOUNTING
SCREWS
DETECTOR HEAD
(SUPPLIED SEPARATELY)
EXHAUST
FILTER ADAPTER
DETECTOR BASE
INLET SAMPLING TUBE
(SUPPLIED SEPARATELY)
O-RINGS
FOAM
GASKETS
HOUSING
MOUNTING SCREWS
TEST MAGNET
TUBE
END
PLUG
Page 3
INSTALLATION SEQUENCE PAGE
Step 1. Verify duct air flow direction and velocity................................................................................................................2
Step 2. Drill mounting holes ................................................................................................................................................2
Step 3. Mount duct housing ................................................................................................................................................3
Step 4. Install inlet tube ......................................................................................................................................................3
Step 5. Complete field wiring ..............................................................................................................................................5
Step 6. Install filters..............................................................................................................................................................7
Step 7. Perform detector check ..........................................................................................................................................7
Step 8. Install cover ............................................................................................................................................................9
Step 9. Perform final system check (Testing)......................................................................................................................9
STEP 1. VERIFY DUCT AIR FLOW DIRECTION AND VELOCITY
The 14506873-001 is designed to be used in air handling systems having air velocities of 500 to 4000 ft (152.5 to 1219
m) 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 to check the air velocity in the duct.
STEP 2. DRILL MOUNTING HOLES
Remove the paper backing from the drilling template. Affix the template to the air duct at the desired mounting location.
Make sure the template lies flat and smooth on the air duct. Center punch hole targets and remove the template. Drill the
holes as indicated on the template. Slide the two speed nuts over the two small holes (Hole A) next to the sampling tube
bushing holes (Hole B) previously drilled in the duct. (See Figure 2.)
Location of detectors mounted in or on air ducts should be at least six duct widths downstream from any duct openings,
deflection plates, sharp bends, or branch connections.
Exception: Where it is physically impossible to locate the detector accordingly , the detector can be positioned closer than
six duct widths, but as far as possible from the opening, bend, or deflection plates.
STEP 3. MOUNT DUCT HOUSING
Remove the duct housing cover. Slide the foam gaskets over the tube bushings as shown in Figure 2A. Make sure the
two small holes in the gaskets line up with the two duct housing mounting holes. Put one 5/16-inch O-ring over each of
the two #10 sheet metal screws. Use the two sheet metal screws to secure the duct housing to the duct.
CAUTION: Do not overtighten the screws.
A78-2046-00 A78-2449-00
Figure 2. Speed Nut Mounting Location. Figure 2A. Installation of Foam Gaskets Over
Sampling Tube Bushings.
T
ABLE 1. SAMPLING (INLET) TUBES
TUBE OUTSIDE DUCT WIDTH
SSDST-1.5 1 to 2 ft. (30 to 61 cm)
SSDST-3 2 to 4 ft. (61 to 122 cm)
SSDST-5 4 to 8 ft. (1.2 to 2.4 m)
SSDST-10 8 to 12 ft. (2.4 to 3.7 m)
SCREW HOLES FOR ATTACHING
DETECTOR HOUSING TO DUCT
FOAM GASKETS
EXHAUST TUBE
(EXTENSION BUSHING)
DUCT DETECTOR
HOUSING
O-RINGS
MOUNTING
SCREWS
INLET SAMPLING
TUBE BUSHING
HOLE B
HOLE A
DUCT
WALL
SPEED
NUT
Page 4
STEP 4. INSTALL INLET TUBE
The inlet tube (shown in Figure 3) is identified by a series of air inlet holes on the tube. This tube must be purchased separately. Order the correct length, as specified in Table 1, for the width of the duct where it will be installed. The exhaust
tube is molded into the base of the duct housing.
The inlet tube should be installed in the inlet sampling tube bushing located in the center of the duct detector housing.
(See Figure 2A.) The air inlet holes must face into the air flow. To assure proper installation, the tube mounting flange is
marked with arrows. Mount the inlet tube so that the arrows point into the air flow. Figure 4 shows the various combinations of duct detector and tube mounting configurations with respect to air flow.
A78-2047-00
Figure 3. Air Duct Detector Inlet Sampling Tube.
A78-1812-01
Figure 4. Tube Mounting Configurations with Varying Air Flow Direction and Orientation of Detector Housing.
Vertical as well as Horizontal Mounting is Acceptable.
A. INSTALLATION FOR DUCTS LESS THAN 8 (2.4 M) FEET WIDE
1. If the inlet tube is longer than the width of the air duct, drill a 3/4-inch (19 mm) hole in the duct directly opposite the
hole already cut for the inlet tube.
If the inlet tube is shorter than the width of the air duct, install the end cap into the inlet tube as shown in Figure 3.
2. Slide the inlet tube into the bushing located in the center of the duct housing. Position the tube so that the arrows
point into the air flow.
3. Secure the tube flange to the housing bushing with the two #6 self-tapping screws.
4. For tubes longer than the width of the air duct, the tube should extend out of the opposite side of the duct. If there
are more than 2 holes in the section of the tube extending out of the duct, select a different tube length using Table
1. Otherwise, trim the end of the tube protruding through the duct so that 1 to 2 in (25 to 51 mm) of the tube extends
outside the duct. Plug this end with the tube end plug and tape closed any holes in the protruding section of the tube.
Be sure to seal the duct when the tube protrudes.
5. Any inlet tube over 3 ft (91 cm) long must be supported on the opposite side of the duct detector housing.
AIR FLOW
DIRECTION
DUCT
DETECTOR
HOUSING
DOTS INDICATE POSITION OF
SAMPLING TUBE HOLES
AIR FLOW
DIRECTION
DUCT
DETECTOR
HOUSING
INLET
TUBE
EXHAUST
TUBE
AIR FLOW
DIRECTION
INLET
TUBE
EXHAUST
TUBE
INLET
TUBE
EXHAUST
TUBE
DUCT
DETECTOR
HOUSING
AIR FLOW
DIRECTION
EXHAUST
TUBE
INLET
TUBE
DUCT
DETECTOR
HOUSING
INLET
TUBE
END
PLUG
AIR HOLES
ARROWS
MUST FACE
INTO AIR FLOW
AIR FLOW DIRECTION
FLANGE
DETECTOR
HEAD
TEST COIL
H500-03-00 4 I56-475-09R H500-03-00 9 I56-475-09R
Page 5
WARNING: In no case should more than 2 air inlet holes be cut off the tube. There must be a minimum of 10 holes in
the tube exposed to the air stream.
B. INSTALLATION FOR DUCTS MORE THAN 8 (2.4 M) FEET WIDE
NOTE:To install inlet tubes in ducts more than 8 feet wide, work must be performed inside the air duct. Sampling of air
in ducts wider than 8 feet is accomplished by using the SSDST-10 inlet sampling tube.
Install the inlet tube as follows:
1. Drill a 3/4-in (19 mm) hole in the duct directly opposite the hole already drilled for the inlet tube.
2. Slide the inlet tube into the bushing located in the center of the duct housing. Position the tube so that the arrows
point into the air flow. Secure the tube flange to the housing bushing with the two #6 self-tapping screws.
3. From inside the duct, couple the other section of the inlet tube to the section already installed using the 1/2-inch conduit fitting supplied. Make sure that the holes in both air inlet tubes are lined up facing the direction of air flow.
4. Trim the end of the tube protruding through the duct so that 1 to 2 in (25 to 51 mm) of the tube extends outside the
duct. Plug this end with the tube end plug and tape closed any holes in the protruding section of the tube. Be sure to
seal the duct when the tube protrudes.
5. Any tube (over 3 ft - 91 cm long) that doesn’t protrude through the duct (on the side opposite the housing) must be
supported by other means.
NOTES: – An alternate method to using the SSDST-10 is to use two SSDST-5 inlet tubes. Remove the flange from
one of the tubes and install as described above. After the installation, use electrician’s tape to close off
some of the sampling holes so that there is a total of 12 holes spaced as evenly as possible across the
width of the duct.
– Air currents inside the duct may cause excessive vibration. This vibration can slowly open the seal
around the tube and permit air to escape. To prevent this from occurring, a 3-inch floor flange, available
at most plumbing supply houses, may be used. This flange/connector mounting technique makes the
initial installation easier because a 1-in to 1-1/4-in (25 to 32 mm) hole may be drilled where the flange/
connector will be used. It is easier to push the inlet tube through the larger hole.
MODIFICATION OF INLET SAMPLING TUBES
There may be situations where duct widths are not as specified for the installation. In such cases, it is permissible to
modify an inlet sampling tube that is longer than necessary to span the duct width.
Use a 0.193-inch diameter (#1 1) drill and add the appropriate number of holes so that the total number of holes exposed
to the air flow in the duct is 10 to 12. Space the additional holes as evenly as possible over the length of the tube.
STEP 5. COMPLETE FIELD WIRING
Wiring Installation Guidelines
All wiring must be installed in compliance with the National Electrical Code and the local codes having jurisdiction using
the proper wire size. The conductors used to connect smoke detectors to control panels and accessory devices should
be color-coded to reduce the likelihood of wiring errors. Improper connections can prevent a system from responding
properly in the event of a fire.
For signal wiring, (the wiring between interconnected detectors or from detectors to auxiliary devices), it is recommended that single-conductor wire be no smaller than 18 gauge (0.812 sq. mm). The duct detector terminals accommodate
wire sizes up to 14 gauge (2.087 sq mm). The last foot (30 mm) or so of conduit should be flexible steel conduit (available in electrical supply houses) which facilitates easier installation and puts less strain on the conduit holes in the housing. Solid conduit connections may be used, if desired.
To insure stable communications, the loop resistance of the communication line must not exceed 40 ohms.
Page 6
SAMPLING TUBE
FILTERS
SAMPLING TUBE
MOUNTING
SCREWS
DETECTOR HEAD
EXHAUST
FILTER ADAPTER
DETECTOR BASE
INLET SAMPLING TUBE
FOAM GASKET
H500-03-00 6 I56-475-09R H500-03-00 7 I56-475-09R
Figure 5. Wiring Diagram
Note: Auxiliary devices (SSDRA400Z, SSDPA400, SSDRTS451/SSDRTS451KEY) and auxiliary control contacts will
not
function without auxiliary power. See Figure 5Afor voltage/termination.
A78-2450-475
ALARM SIGNAL (+)
AUX POWER (-)
2
6
(+)
(-)
DUCT DETECTOR
14506873-001
SSDPA400 (OPTIONAL)
AUDIBLE ALERT
ALARM SIGNAL (+)
AUX POWER (-)
2
6
(+)
(-)
DUCT DETECTOR
14506873-001
SSDRA400Z (OPTIONAL)
REMOTE (LED)
ANNUNCIATOR
RED
ALARM SIGNAL (+)
AUX POWER (-)
2
6
1
2
DUCT DETECTOR
14506873-001
SSDRTS451/SSDRTS451KEY
(OPTIONAL) REMOTE
TEST STATION
RED
5
3
1
4
TEST (+)
3
ACCESSORY CURRENT LOADS AT 24VDC
DEVICE
SSDPA400
SSDRA400Z
SSDRTS451/SSDRTS451KEY
STANDBY
0mA
0mA
0mA
ALARM
15mA MAX
10mA MAX
10mA MAX
ANY COMBINATION OF ACCESSORIES MAY BE USED
SUCH THAT THE GIVEN CURRENT LOADS TOTAL:
AUX POWER (+)
TEST (-)
STANDBY STATE:
ALARM STATE:
26mA MAX AT 24 VDC
87mA MAX, 24 VDC (TERMINALS 3 & 6)
20mA MAX, 12 VDC, ALARM CONTACTS (TERMINALS 2 & 6).
NOTE: THE SSDRTS451/SSDRTS451KEY RESET
CANNOT BE USED ON THE 14506873-001.
TEST (-)
RESET
(NOT USED)
45
6789101112
13 14 15 16 17
+-
COMMUNICATION
LINE
FROM PANEL
(+)
(-)
(+)
(-)
COMMUNICATION
LINE TO REST
OF SYSTEM
NOTE: FOR POWER SUPPLY
WIRES, POLARITY IS NOT
IMPORTANT.
ALWAYS RUN AUXILIARY CONTROL
WIRING IN SEPARATE CONDUIT
J5
K2
123
24 VAC &
24 VDC
240 VAC
120 VAC
NOTE: JUMPER WIRE (J5)
IS REQUIRED TO BE
INTACT FOR 2-WIRE
APPLICATIONS ONLY.
CUT J5 FOR 4-WIRE
POWER SUPERVISION.
NOTE:
WHEN INITIATING AN ALARM, THE
SSDRTS451/SSDRTS451KEY
REQUIRES 95mA MAXIMUM IN PRE-ALARM AND 103mA MAXIMUM IN
ALARM. NOMINAL STANDBY CURRENT IS 0mA. ALARM CURRENT
IS 10mA MAXIMUM WHEN TEST MAGNET IS REMOVED.
*
*
*
FIGURE 5A
FIGURE 5C
FIGURE 5D
FIGURE 5E
FIGURE 5B
Page 7
Wiring Instructions
The 14506873-001 is designed for easy wiring. The housing provides a terminal strip with clamping plates. Wiring connections are made by stripping approximately 3/8-inch of insulation from the end of the wire, sliding this bare end under
the plate, and tightening the clamping plate screw.
The 14506873-001 is built for 120/240 V AC or 24 VAC/DC to operate auxiliary functions. See Figure 5Afor operating and
wiring details.
Notes on Jumper Wire J5 (See Figure 5A):
If the jumper wire is cut in a 2-wire application, the unit will not function.
1. When the detector is used in a 4-wire application (relay circuit is being used to control fans, dampers, etc.), jumper
wire J5, located between the two terminal strips on the printed circuit board, must be cut to insure power supply supervision.
2. When the detector is used in a 2-wire application (relay control is not being used for any control of fans, dampers,
etc.), jumper wire J5 must be left in place.
120/240 VAC OPERATION
To complete the wiring for 110/120 VAC operation, connect the power supply wires to terminals 15 and 16 (see Figure
5A). If 220/240 VAC operation is preferred, connect the power supply wires to terminals 16 and 17.
24 VAC/DC OPERATION
To complete the wiring for 24 VAC or DC connect the power supply wires to the terminals marked 7 and 8. Polarity is not
important.
STEP 6. INSTALL THE FILTERS
Most duct installations are subject to dust accumulation.
System filters remove a large percentage of this contamination, but cannot remove all of it. Dust inside the duct
detector causes problems. First, very fine particles of dust
can enter the detector sensing chamber and cause the
unit to go into alarm. Second, the accumulation of dust
and dirt necessitates a more frequent periodic cleaning
schedule, which can result in substantial cost and/or down
time.
Disposable sampling tube filters can greatly reduce the
nuisance alarms caused by dust, and can also significantly extend the maintenance interval. To install the sampling
tube filters, simply push the filter adapter into the exhaust
tube, and then push the filter onto the adapter tube on the
left, as shown in Figure 6. Then install the other filter over
the end of the inlet sampling tube.
Caution: Filters require periodic cleaning or replacement, depending on the amount of dust and dirt accumulated.
Visually inspect the filters at least quarterly; inspect them more often if the dust accumulation warrants it.
Replacement filters can be ordered from Honeywell (exhaust tube/intake tube filter P/N SSDF360500).
The filters do not substantially affect smoke behavior even when they are up to 90% clogged. Quarterly visual inspection
is usually often enough to determine if filters should be replace because only a high percentage of contamination affects
duct detector performance.
SAMPLING TUBE
FILTERS
SAMPLING TUBE
MOUNTING
SCREWS
DETECTOR HEAD
EXHAUST
FILTER ADAPTER
DETECTOR BASE
INLET SAMPLING TUBE
FOAM GASKET
A78-2451-01
Figure 6. Sampling Tube Filter Installation.
Page 8
STEP 7. PERFORM DETECTOR CHECK
AIR FLOW
1. To verify sufficient sampling of ducted air, use a manometer to measure the differential pressure created from air flow
across the sampling tubes. The pressure should measure no less than 0.01 inches of water and no greater than 1.20
inches of water.
2. Inspect the duct housing sensing chamber and clear any obstructions that may impede air flow across the detector
head. If a smoke test is required, smoke such as cigarette, cotton wick, or punk smoke may be blown directly at the
smoke sensor head. It is important to plug the exhaust and sampling tube hole to prevent ducted air from blowing
smoke away from the smoke sensor head. Record all test records in the Detector Test Log enclosed (Page 12).
CAUTION: REMOVE THE PLUGS AFTER TESTING OR THE SENSOR WILL NOT SENSE SMOKE IN THE AIR
DUCT.
ALARM TESTS
Check the detector interconnections before replacing the duct housing cover. Check the 14506873-001 as follows:
A. SSDM0204 MAGNET TEST
1. Make sure power is applied to the detector.
2. Position the painted surface of the test magnet against the housing next to the rib molded onto the outside of the
housing (see Figure 7).
3. The LEDs on the detector should latch on as should any accessories (SSDPA400, SSDRA400Z, SSDRTS451), and
the alarm condition should be verified at the control panel. The control panel must be active for an alarm to be initiated.
A78-2452-00 A78-2453-00
Figure 7. Testing Detector Alarm Figure 8. Detector Head Removal
B. SSDRTS451/SSDRTS451KEY REMOTE TEST STATION
The SSDRTS451/SSDRTS451KEYRemote T est Station facilitates test of the alarm capability of the duct detector, as indicated in the SSDRTS451/SSDRTS451KEY manual. The 14506873-001 duct detector cannot be reset by the
SSDRTS451/SSDRTS451KEY. It must be reset at the system control panel.
To install the SSDRTS451/SSDRTS451KEY test coil, connect the device as shown in Figure 9. Position the coil in the
detector housing with the arrow facing up and pointing toward the detector as in Figure 9. Attach the coil leads to the
housing terminals as shown; polarity is not important. Firmly screw the test coil mounting bracket in place over the test
coil. The wire run connecting the remote test station to the duct detector must be less than 25 ohms.
TWIST
COUNTERCLOCKWISE
TO REMOVE
DUCT
HOUSING
TWIST
CLOCKWISE
TO INSTALL
DETECTOR
HEAD
TEST
LOCATOR
TEST
MAGNET
PAINTED SIDE
TOWARD HOUSING
DUCT
HOUSING
DETECTOR
HEAD
H500-03-00 8 I56-475-09R H500-03-00 5 I56-475-09R
Page 9
A78-1994-02
Figure 9. SSDRTS451/SSDRTS451KEY Test Coil Installation
SSDMOD400R SENSITIVITY TEST
After verification of alarm capability, use the SSDMOD400R test module with a voltmeter to check detector sensitivity as
indicated in the SSDMOD400R installation manual. The housing cover must be removed to perform this test.
If the SSDMOD400R readings indicate that the sensor head is outside of the acceptable range, the sensor heads require
cleaning. (Refer to PERIODIC MAINTENANCE REQUIREMENTS).
TROUBLE TEST
The capability of Trouble detection is tested by removing the detector head from the duct housing. The detector head is
removed by turning it counterclockwise about 10 degrees (Figure 8). The system control panel should indicate a trouble
condition. Replacing the detector head should clear the trouble condition.
STEP 8. INSTALL THE COVER
Install the cover using the four screws. Be certain filters are installed as specified in Step 6. Make sure that the cover fits
into the base groove and that all gaskets are in their proper positions. Tighten the four cover screws to 10 in-lbs.
STEP 9. PERFORM THE FINAL SYSTEM CHECK
Position the magnet as shown in Figure 7. The LEDs on the detector should light. Any accessory LED(s) should also light.
The system control panel should indicate an alarm condition.
PERIODIC MAINTENANCE REQUIREMENTS
Air duct smoke detectors should be maintained at least once a year – more often if the detector heads become obviously
dirty. The detectors must also be cleaned immediately after a fire. Failure to properly maintain air duct smoke detectors
may cause unnecessary false alarms.
Honeywell recommends that a permanent Detector Test Log be set up and maintained for each individual smoke detector in each building. Each detector should be clearly described, with information on the type of detector, the model number, the serial number (if any), the location, and the type of environment. Data entries should include test dates, type of
test mode, test results, maintenance, and comments. ADetector Test Log is included at the end of this manual.
Recommended Detector Maintenance Procedure
NOTE: Notify the proper authorities that the smoke detector system is undergoing maintenance and will be temporarily
out of service. Disable the zone or system undergoing maintenance to prevent unwanted alarms and possible
dispatch of the fire department.
1. Turn off power to the system.
2. Remove and inspect sampling tube filters.
3. If filters are heavily coated with dirt, replace them with new filters. If they are not heavily coated, use a vacuum cleaner or compressed air nozzle to remove dust, then install the filters.
4. Remove detector from housing. (See Figure 8.)
DETECTOR
HEAD
TEST COIL
Page 10
SCREW HOLES FOR ATTACHING
DETECTOR HOUSING TO DUCT
FOAM GASKETS
EXHAUST TUBE
(EXTENSION BUSHING)
DUCT DETECTOR
HOUSING
O-RINGS
MOUNTING
SCREWS
INLET SAMPLING
TUBE BUSHING
HOLE B
HOLE A
DUCT
WALL
SPEED
NUT
A78-2454-00
Figure 10. Photo Head Exploded View
REMOVABLE
COVER
REPLACEABLE
SCREEN
COVER
REMOVAL
SLOT
VANED
SENSING
CHAMBER
PHOTO UNITS
a. Remove detector cover by inserting a small-bladed screwdriv-
er into the cover removal slot located approximately 90
degrees from the test module socket, twisting cover counterclockwise to remove. See Figure 10.
b. Lift the screen from the photo chamber. Vacuum the screen
and cover before using clean, compressed air to loosen and
blow out any remaining debris. (Replacement screens, part no.
SSDRS24, are available.)
c. Vacuum photo chamber, then use clean compressed air to
blow area clean.
d. Replace screen by aligning arrow on top with the field test slot
on the base of the detector. Push screen into place. Screen
should fit tightly to chamber.
ION UNITS
a. Remove the detector cover and screen assembly by depress-
ing the three lock prongs on the top of the cover and rotating
the cover counterclockwise. The SSDCRT400 Cover Removal
Tool makes cover removal easier. See Figure 11.
b. Carefully pull the screen out of the cover.
c. Clean the screen thoroughly with a soft brush or vacuum.
(Replacement screens, part no. SSDRS14.)
d. Brush or vacuum the inside of the cover. Cover may then be
blown out using clean, compressed air.
e. Vacuum sensing chamber before using clean, compressed air
to loosen and blow out any remaining debris.
f. Press the screen back into the cover.
g. Replace the detector cover on the sensing chamber. Rotate it
clockwise to lock it into place.
BOTH TYPES OF UNITS
5. Reinstall the detector in its housing.
6. Restore system power.
7. Put detector into alarm using appropriate method as described
in STEP 7. PERFORM DETECTOR CHECK.
8. Notify the proper authorities that testing has been completed
and the smoke detector system is back in service.
9. Other checks that should be made during maintenance procedures:
—Holes or cracks in duct work near vicinity of detector.
—Air leaks where detector housing or sampling tubes are
attached to duct.
—Dust accumulations in or on sampling tubes.
—Screw terminal tightness.
SPECIFICATIONS
Length: 14.5 inches (36.7 cm.)
Width: 5 inches (12.7 cm.)
Depth: 4 inches (10.2 cm.)
Weight: 4 lbs. (1.8 kg.)
Operating Temperature Range: 32° to 120°F (0° to 49°C)
Operating Humidity Range: 10% to 93% Relative Humidity
Duct Air Velocity: 500 – 4000 ft./min. (157.5 – 1219.2 m/min.)
A78-2455-00
Figure 11. Ion Head Exploded View
LOCK PRONG
REMOVABLE SCREEN
REMOVABLE
COVER
FOR
CLEANING
SENSING CHAMBER
H500-03-00 10 I56-475-09R H500-03-00 3 I56-475-09R
Page 11
Power Supply Electrical Ratings For 14506873-001
24V output maximum load is 80 mA; auxiliary alarm output maximum load is 20 mA.
Auxiliary Relay Contacts
minimum contact current must be greater than 500 mA at 24 VDC
10 amps maximum at 30 VDC
10 amps maximum at 250 VAC
Accessories Part No.
Remote LED SSDRA400Z
Piezo Alert Sounder SSDP A400
Replacement Filters SSDF360500
Magnet SSDM0204
End Plug For Sampling Tube SSDP482100
Installation Kit (Parts bag) SSDA2650-01
Photoelectronic Replacement Screen SSDRS24
Ionization Replacement Screen SSDRS14
Sensitivity Test Kit SSDMOD400R
Ionization Cover Removal Tool SSDCRT400
Remote Test Station SSDRTS451/SSDRTS451KEY
SAMPLING (INLET) TUBES
TUBE OUTSIDE DUCT WIDTH
SSDST-1.5 1 to 2 ft. (30 to 61 cm)
SSDST-3 2 to 4 ft. (61 to 122 cm)
SSDST-5 4 to 8 ft. (1.2 to 2.4 m)
SSDST-10 8 to 12 ft. (2.4 to 3.7 m)
Programming Specifications/Requirements For Intelligent System Control Panels.
NOTE: Models TC807A and TC806A can be used with the 14506873-001 if the following constraints are observed:
1. There may be a limit to the number of devices per zone that can have their LEDs latched on. The number of devices
is determined by the control panel and its ability to supply LED current. If more than the maximum number of devices
are on the same loop, Do NOT use the 14506873-001 for control purposes. Control for duct applications would need
to come directly from the control panel or by using control modules. If sensor models TC807A1036, TC807A1044,
TC806A1037, or TC806A1052 are used, the constraints above do not apply.
2. The duct control circuitry (auxiliary relay contacts and auxiliary alarm output) may change states if the sensor is tested and the LED is turned on for more than 4 seconds. If the LED is latched on for less than 4 seconds, the control
circuitry of the 14506873-001 will NOT operate.
3. The panel must not continuously poll the same unit for more than 4 seconds or the auxiliary relay and auxiliary alarm
output may switch states. After 4 seconds of continual polling of a device, the panel must wait a minimum of 100ms
before polling or communicating to that same device.
4. Communications must not cease for more than 3 seconds without an additional clock pulse (after Pulse Width 5) to
turn off the LED on the sensor.
5. To allow the auxiliary relay and auxiliary alarm output to return to a standby condition, (after being in alarm) the panel
must wait a minimum of 100ms after turning off the sensor LED before communicating with that device again.
Power 120 VAC (102 - 132) 240 VAC (204 - 264) 24 VAC (20.6 - 26.4)
24 VDC (20 - 30)
Requirements mA rms MAX. mA rms MAX. mA rms MAX.
mA DC MAX.
Device
Standby Alarm Standby Alarm Standby
Alarm Standby Alarm
14506873-001
44 52 25
30
65
182 26 87
BRKPA400*
-- 3 --
1.5
--
29 -- 15
SSDRA400ZA*
-- 1.5 --
1 -- 17.3 -- 10
SSDRTS451/SSDRTS451KEY*
-- 1.5 --
1 -- 17.3 -- 10
SSDRTS451**/SSDRTS451KEY
11.5 13 5.5
6.5 140 157 95 103
The currents shown for the
14506873-001 are maximum values with no accessories.
* All accessory currents are
additional to 14506873-001.
There are no additional currents for accessories in standby.
**
SSDRTS451/SSDRTS451KEY
when the magnet is held in
place to initiate an alarm.
Page 12
H500-03-00 12 I56-475-09R
© 2001 Honeywell
DETECTOR TEST LOG
Detector Identification Information
Manufacturer and Serial Date
Detector Model: __________________ Number:____________________ Installed: ________________
Description of Detector Location:
______________________________________________________________________________________
______________________________________________________________________________________
______________________________________________________________________________________
Test Results and Maintenance Data
Date Test Test Maintenance
Tested
Description Results Performed Comments
________ __________ ________ ______________ ____________________________
________ __________ ________ ______________ ____________________________
________ __________ ________ ______________ ____________________________
________ __________ ________ ______________ ____________________________
________ __________ ________ ______________ ____________________________
________ __________ ________ ______________ ____________________________
________ __________ ________ ______________ ____________________________
________ __________ ________ ______________ ____________________________
________ __________ ________ ______________ ____________________________
________ __________ ________ ______________ ____________________________
________ __________ ________ ______________ ____________________________
________ __________ ________ ______________ ____________________________
________ __________ ________ ______________ ____________________________
________ __________ ________ ______________ ____________________________
________ __________ ________ ______________ ____________________________
________ __________ ________ ______________ ____________________________
________ __________ ________ ______________ ____________________________
________ __________ ________ ______________ ____________________________
Please refer to inser t for the Limitations of Fir e Alarm Systems
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