installation instructions for the duct smoke detector

INSTALLATION INSTRUCTIONS FOR THE DUCT SMOKE DETECTOR
These are Installation Instructions (DWG.# HA-06-073) for the DH-98/DH-99 Duct Housing customized as follows:
DH-98-I
Duct Housing with the SIJ-24DH Conventional Ionization Smoke Detector
DH-98-P
Duct Housing with the SLR-24DH Conventional Photoelectric Smoke Detector
DH-98-HVI High Voltage Duct Housing with the SIJ-24DH Conventional Ionization Smoke Detector
DH-98-HVP High Voltage Duct Housing with the SLR-24DH Conventional Photoelectric Smoke Detector
DH-98-A
Duct Housing with the ALG-DH Analog Photoelectric Smoke Sensor*
DH-98-AR Duct Housing with the ALG-DH Analog Photoelectric Smoke Sensor & Relays*
DH-99-A
Duct Housing with the ALK-D Analog Photoelectric Smoke Sensor*
DH-99-AR Duct Housing with the ALK-D Analog Photoelectric Smoke Sensor & Relays*
*These products are compatible exclusively with fire alarm control panels that utilize Hochiki's protocol, DCP.
I. LOCATION REQUIREMENTS
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.
II. MOUNTING THE DETECTOR
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
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.
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: STS-2.5
STS-5.0
STS-10.0
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.
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.
FIG. 3 AIR SAMPLING
VERIFICATION
DWYER #4000 DIFFERENTIAL
PRESSURE GAUGE (OR
EQUIVALENT) WITH TUBING
AND SIZE 0 RUBBER STOPPERS
(HA PART# 0700-01118).
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.
C. TESTING THE INSTALLATION
L.E.D.S
FIG. 5
FIG. 4
Models DH-98-I and DH-98-HVI:
With the duct housing cover removed, place the magnet (HA Part #0700-01117) on the detector as shown in
Figure 4 for approximately six (6) seconds. The detector should not alarm. Place the magnet on the opposite
side (Figure 5) for another six (6) seconds. The detector LEDs should illuminate and the duct housing should
go into alarm. This test will verify that the detector is within its intended limits.
DH-98-P
ameri ca cor porati on
DH-98 Duct
Smoke Detector
DH-98-I
DH-98-A
DH-98-AR
R EMOVAL OF COVER EXPOSES HIGH
VOLTAGE TER MINALS - DISCONNECT
POWER BEFOR E SERVICING
Models DH-98-P and DH-98-HVP:
The SLR photoelectric detector has a built-in sensitivity window verification feature. If the detector is within its
calibrated sensitivity range the detector LEDs will flash Green in standby or normal operation. If the detector drifts
outside its sensitivity range the LEDs will flash Red to indicate an out of sensitivity condition.
ALARM
TEST
PILOT RESET
FIG. 6 MAGNET PLACEMENT
NOTE: Any of the DH-98-I, DH-98-P, DH-98-HVI or the DH-98-HVP detectors may be placed into alarm by placing the magnet (HA Part #0700-01117) as shown in
Figure 6.
HOCHIKI AMERICA CORPORATION
7051 Village Drive Suite 100 * Buena Park, CA 90621-2268
Phone: 714/522-2246 * Fax: 714/522-2268
Technical Support: 800/845-6692 or technicalsupport@hochiki.com
Hochiki America Corporation * DH-98/99 Installation Instructions (HA-06-073. P/N 1700-09887, Page 1 of 3)
Specifications subject to change without notice. * August 2014
Models DH-98-A/DH-99-A and DH-98-AR/DH-99-AR
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.
D. WIRING DIAGRAMS - DH-98-I, DH-98-P, DH-98-HVI and DH-98-HVP
See
Power
Connections
1
2
3
ALARM
CONTACTS
10.0A @ 115VAC
4
5
6
7
8
9
ALARM
CONTACTS
1A @ 24VDC
10
11
12
1
2
3
4
5
24 VDC
@ 0.1 AMP MAX.(Detector only).
UP TO 1.9 AMPS FOR AUXILIARY
OUTPUTS (HORNS/STROBES).
6
1
DH-98-I
DH-98-P
2
3
-
+
4
5
14
15
16
17
115 VAC 60 Hz INPUT
@ 0.1 AMP MAX.
6
18
19
20
G
N
H
1
2
3
230 VAC 60 Hz INPUT
@ 0.1 AMP MAX.
4
5
6
N
H
1
2
3
4
5
6
230 V.A.C. OPERATION
115 V.A.C. OPERATION
24 V.D.C. OPERATION
G
DH-98-HVI
DH-98-HVP
DH-98-I
DH-98-P
DH-98-I
DH-98-P
24 V.A.C. OPERATION
13
REMOTE
ACCESSORIES
*Trouble contacts are shown in non-energized
condition. Trouble contacts monitor power
connected and head removed.
DH-98 DUCT SMOKE DETECTOR
24 VAC, 60 Hz
@ 0.1 AMP MAX.(Detector only).
UP TO 1.9 AMPS FOR AUXILIARY
OUTPUTS (HORNS/STROBES).
*TROUBLE
CONTACTS
10.0A @ 115VAC
III. ELECTRICAL INSTALLATION, continued
D. WIRING DIAGRAMS, continued
DH-98-A/DH-99-A WIRING DIAGRAM
ALG-DH/ALK-D ANALOG
SENSOR
L1
L2
-R
+R
1
2
3
4
STANDBY 390 mA
ALARM 8mA
TO NEXT
SENSOR
S (+)
LOOP INTERFACE
UL LISTED
CONTROL PANEL
The DH-98-A/DH-99-A and DH-98-AR/DH-99-AR
are not self-contained sensors.
This product is compatible only with fire alarm
control panels that utilize Hochiki's Digital
Communications Protocol, DCP.
For example the FireNET Control Panel.
SC (-)
FAN SHUTDOWN EXAMPLE
DH-98-AR /DH-99-AR WIRING DIAGRAM
OBSERVE POLARITY
INPUT VOLTAGE
24 V.D.C.
FAN
SUPPLY VOLTAGE
10 mA Standby
55mA Alarm
+
REMOTE
ALARM
LED
ADDRESSABLE
LOOP
1
2
3
4
-
+
5
+
6
REMOTE
PILOT LED
UL LISTED
CONTROL PANEL
7
8
NC
C
9
NO
ALARM CONTACTS
10.0A @ 250VAC
10
11
NC
C
12
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.
CAUTION: Since the analog loop is current limited similar to a conventional two-wire loop, the DH-98-AR/DH-99-AR
cannot be guaranteed to operate under all conditions. This analog duct housing must be treated as a two-wire conventional
duct detector when considering auxiliary functions necessary for smoke control. When smoke control is absolutely necessary,
the conventional four-wire duct detector (DH-98-P, DH-98-I, DH-98-HVP, DH-98-HVI) used with a contact monitoring
module will satisfy the condition.
Hochiki America Corporation * DH-98/99 Installation Instructions (HA-06-073. P/N 1700-09887, Page 2 of 3)
Specifications subject to change without notice. * August 2014
FIRE ALARM CONTROL PANEL WIRING
15
14
UL
LISTED
FIRE
ALARM
CONTROL
UNIT
14
15
EOLR
END
OF
LINE
RESISTOR
+
11
-
11
12
12
DH-98 DETECTOR
#1
FIG. 5A
COMMON FUNCTION
DH-98 DETECTOR
#2
DUCT UNIT #1
INPUT
POWER
Input Power Source
Will Be Either
24V, 115V or 230V
P
P
DUCT UNIT #2
DUCT UNIT #3
P
INPUT
POWER
INPUT
POWER
P
P
P
17
17
17
18
18
18
19
19
19
20
20
20
FIG. 5B
Installation requiring common functions must be wired as shown in Figure 5B.
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 DH-98 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.
REMOTE ACCESSORY WIRING
Remote accessory terminals 16 to 20 are not supervised and the output voltage will be present when the duct
detector is in alarm or the test/reset switch is operated.
18
BLACK
Negative
See Note A
19
18
RED
Up to 1.9 Amps @ 24 VDC
(Depends upon Input power to
terminals 4 and 5).
Strobe
&
Horn
17
16
Positive
BLACK
20
Negative
RED
15mA @
"ALARM"
24 VDC
LED
RED
19
Positive
NOTE A: Do not use with 115 VAC or 230 VAC operation.
Key or
Push Button
"Test/Reset"
Switch
4A @
24 VDC
GREEN
"PILOT"
LED
15mA @
24 VDC
BLACK
Negative
16
RED
Positive
INTERCONNECT WIRING DIAGRAM (MULTIPLE FAN SHUTDOWN)
DH-98-I, DH-98-P, DH-98-HVI and DH-98-HVP
The DH-98/99 series duct detectors have the ability to interconnect (all alarm relays operate with a single alarm)
using the same independent power supply. Polarity must be observed throughout the connection using
terminals 16 and 18 from each unit. Up to 30 units may be interconnected.
DUCT UNIT #1
INPUT
POWER
Input Power Source
Will Be Either
24V, 115V or 230V
DUCT UNIT #2
DUCT UNIT #3
16
16
16
18
18
18
P
P
FIG. 7
HOCHIKI AMERICA CORPORATION
7051 Village Drive Suite 100 * Buena Park, CA 90621-2268
Phone: 714/522-2246 * Fax: 714/522-2268
Technical Support: 800/845-6692 or technicalsupport@hochiki.com
Hochiki America Corporation * DH-98/99 Installation Instructions (HA-06-073. P/N 1700- 09887, Page 3 of 3)
Specifications subject to change without notice. * August 2014