User manual

ManualsBrandsSystem Sensor ManualsOtherSmoke Alarm DH400ACDCP

D400-13-00 1 I56-555-09R

DH400ACDCP Air Duct Smoke Detector

INSTALLATION AND MAINTENANCE INSTRUCTIONS

3825 Ohio Avenue, St. Charles, Illinois 60174

1-800-SENSOR2, FAX: 630-377-6495

www.systemsenor.com

Before Installing

Please thoroughly read the System Sensor Guide for

Proper Use of Smoke Detectors in Duct Applications

(A05-1004), which provides detailed information on de-

tector spacing, placement, zoning, wiring, and special

applications. Copies of this manual are available online

at www.systemsensor.com or via System Sensor’s toll free

fax-back service, Documents on Demand at 800/736-7672.

NFPA Standards 72 and 90A should also be referenced for

detailed information.

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 Page

[1] General Description 1

[2] Exploded View of Duct Detector Components 2

[3] Contents of the Duct Detector Kit 2

[4] Limitations of Duct Detectors 2

[5] Installation Sequence 2

[6] Duct Detector Maintenance and Test Procedures 8

[7] Detector Cleaning Procedures 10

[8] Speciﬁcations 12

Warranty 13

Detector Test log 16

List of Tables and Figures Page

Fig. 1: Duct Detector Exploded View 2

Fig. 2: Installation of Sampling Tube Gaskets 3

Fig. 3: Mounting Location of Speed Nuts 3

Table 1: Inlet Sampling Tube Selection 3

Fig. 4: Inlet Sampling Tube 4

Fig. 5: Sampling Tube Mounting Conﬁgurations 4

Fig. 6: Wiring Diagram 6

Fig. 7: Wiring Diagram – No Control Panel 7

Fig. 8: Wiring Diagram – Accessories 8

Fig. 9: Sampling Tube Filter Installation 8

Fig. 10: Testing Detector Alarm 9

Fig. 11: Detector Head Removal 9

Fig. 12: RTS451/RTS451KEY Test Coil Installation 10

Fig. 13: Photo Head Exploded View 11

[1] General Description

An HVAC system supplies conditioned air to virtually ev-

ery 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.

Model DH400ACDCP Air Duct Smoke Detector utilizes

photoelectric technology for the detection of smoke. This

smoke detection method, when combined with an efﬁcient

housing design, samples air passing through the duct and

allows detection of a developing hazardous condition.

When sufﬁcient smoke is sensed, an alarm signal is initi-

ated at the ﬁre control panel monitoring the detector, and

appropriate action can be taken to shut off fans and blow-

ers, change over air handling systems, etc. These actions

can facilitate the management of toxic smoke and ﬁre gases

throughout the areas served by the duct system.

DH400ACDCP detectors are designed to operate from 24

VDC, 24 VAC, 120 VAC, or 240 VAC. Alarm and supervisory

relay contacts are available for control panel interface

(alarm initiation), HVAC control, and other auxiliary func-

tions. These detectors are not designed for 2-wire appli-

cation.

For testing, the alarm can be enabled by a magnet activated

test switch, by insertion of a calibrated test card into the

sensing chamber (photoelectronic version only), or by the

optional remote test station. The duct smoke detectors latch

into alarm state when alarm occurs. LEDs on each detector

illuminate to provide local alarm indication, and optional

accessories offer a variety of annunciation capabilities.

The detector can be reset by a momentary power inter-

ruption, by the magnet activated reset switch, or by the

optional remote test station.

Summary of content (16 pages)

PAGE 1
INSTALLATION AND MAINTENANCE INSTRUCTIONS 3825 Ohio Avenue, St. Charles, Illinois 60174 DH400ACDCP Air Duct Smoke Detector Before Installing Please thoroughly read the System Sensor Guide for Proper Use of Smoke Detectors in Duct Applications (A05-1004), which provides detailed information on detector spacing, placement, zoning, wiring, and special applications. Copies of this manual are available online at www.systemsensor.
PAGE 2
[2] Figure 1. Exploded view of duct detector components: CONDUIT HOLES INLET SAMPLING TUBE (SUPPLIED SEPARATELY) FOAM GASKETS DUCT DETECTOR HOUSING TERMINAL STRIP TUBE END PLUG PC BOARD INSULATOR DUCT DETECTOR COVER SAMPLING TUBE MOUNTING SCREWS O-RINGS DETECTOR BASE HOUSING MOUNTING SCREWS EXHAUST FILTER ADAPTER DETECTOR HEAD H0249-00 TEST MAGNET SAMPLING TUBE FILTERS [3] Contents Of The Duct Detector Kit 1. Complete housing base and cover assembly 2. Two #10 sheet metal mounting screws 3.
PAGE 3
[5.4] Install The Inlet The inlet tube (shown in Figure 4) 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 width of the duct where it will be installed. The exhaust tube is molded into the base of the duct housing, and the A2440-00 Exhaust Tube Extension is available as an accessory in those cases where the molded exhaust port does not extend at least 2 inches into the duct. feet per minute.
PAGE 4
Figure 4. Air duct detector inlet sampling tube: FLANGE AIR HOLES INLET TUBE END PLUG ARROWS MUST FACE INTO AIR FLOW AIR FLOW DIRECTION H0108-00 Figure 5. Tube mounting configurations with varying air flow direction: DOTS INDICATE POSITION OF SAMPLING TUBE HOLES AIR FLOW DIRECTION AIR FLOW DIRECTION DETECTOR HOUSING DETECTOR HOUSING B. A.
PAGE 5
[5.5] Field Wiring Installation Guidelines All wiring must be installed in compliance with the National Electrical Code and the local codes having jurisdiction. Proper wire gauges should be used. 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. Install the inlet tube as follows: 1.
PAGE 6
D400-13-00 6 UL LISTED CONTROL PANEL ALARM INITIATION LOOP TROUBLE CONTACT RATING 0.3 A @ 32 VAC/DC AUX. CONTACT RATINGS 10A @ 30 VDC 10A @ 250 VAC 500mA MINIMUM @ 24 VDC NOT INTENDED FOR CONNECTION TO CONTROL PANELS. POWER INPUTS ACCEPT 24 VDC, 24 VAC 50-60 HZ, 120 VAC 50-60 HZ, OR 220/240 VAC 50-60 HZ. CONNECT POWER SOURCE TO APPROPRIATE TERMINALS OF EACH DETECTOR. 24V 2 12 220/240 VAC 120 VAC 13 AVAILABLE POWER INPUTS 14 C. N.C. N.C. 14 C. 16 N.O. 17 N.O. 18 C. 19 N.C.
PAGE 7
Figure 7. Wiring diagram for duct detector systems equipped without a control panel (see Figure 8 for wiring of additional optional accessories): AVAILABLE POWER INPUTS 2 1 SEE SPECIFICATIONS FOR ADDITIONAL POWER SUPPLY INFORMATION. 13 12 POWER INPUTS ACCEPT 24 VDC, 24 VAC 50-60 HZ, 120 VAC 50-60 HZ, OR 220/240 VAC 50-60 HZ. CONNECT POWER SOURCE TO APPROPRIATE TERMINALS OF EACH DETECTOR. 14 120 VAC 24V 220/240 VAC ALARM AUXILIARY CONTACTS FOR FAN SHUTDOWN, ETC.
PAGE 8
Figure 8.
PAGE 9
Figure 10. Testing detector alarm: Figure 11. Detector head removal: DETECTOR HEAD DETECTOR HEAD TWIST COUNTERCLOCKWISE TO REMOVE DUCT HOUSING TEST LOCATOR TEST MAGNET PAINTED SIDE TOWARD HOUSING RESET LOCATOR DUCT HOUSING TWIST CLOCKWISE TO INSTALL H0250-00 H0251-00 [6.1] Smoke Entry Tests [6.1.1] Air Flow 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.
PAGE 10
Figure 12. RTS451/RTS451KEY test coil installation: TEST COIL DETECTOR HEAD H0245-00 the RTS451/RTS451KEY manual. The DH400ACDCP duct detector can be reset by the RTS451/RTS451KEY. If a system control panel is used, the panel itself may also require resetting. To install the RTS451/RTS451KEY, connect the device as shown in Figure 8; wire runs must be limited to 25 ohms or less per interconnecting wire.
PAGE 11
Figure 13. Photo head exploded view: REMOVABLE HEAD COVER TEST SLOT CLEANABLE SCREEN P/N RS24 (W/O THERMAL) HEAD COVER REMOVAL SLOT VANED CHAMBER H0261-00 3. Vacuum the photo chamber. Use clean compressed air to blow it clean. 4. Replace the screen by aligning the arrow on top with the field test port on the detector. Press the screen into place. It should fit tightly on the chamber. 5. Replace the detector cover and rotate it clockwise to lock it in place. [7.4] Reinstallation 1.
PAGE 12
[8] Model DH400ACDCP Air Duct Smoke Detector Specifications Description HVAC air duct mounted ionization or photoelectronic smoke detector for separately powered systems or stand alone systems. Auxiliary alarm relay contacts provide fan contactor shutdown to prevent HVAC circulation of smoke. Environmental Limits Temperature: Humidity: Air Velocity: 32°F to 120°F 0°C to 49°C 10% to 93% R.H. non-condensing 500 to 4000 Ft/min. 2.54 to 20.3 m/sec.
PAGE 13
Electrical Specifications Power supply voltage: Input capacitance: Reset voltage: Reset time (with RTS451): Reset time (by power down): Power up time: Alarm response time: Sensitivity Test: 20-29 VDC 270 µF max. 3.0 VDC min. .03 to 0.3 sec. 0.6 sec. max. 34 sec.max. 2 to 17 sec. See head label 24 VAC 50-60-Hz 270 µF max. 2.0 VAC min. .03 to 0.3 sec. 0.6 sec. max. 34 sec. max. 2 to 17 sec. See head label 120 VAC 50-60 Hz N/A 10 VAC min. .03 to 0.3 sec. 0.6 sec. max. 34 sec. max. 2 to 17 sec.
PAGE 14
NOTES D400-13-00 14 I56-555-09R
PAGE 15
NOTES D400-13-00 15 I56-555-09R
PAGE 16
DETECTOR TEST LOG Detector Identification Information Manufacturer and Serial Date Detector Model:_______________________ Number:_______________________ Installed:____________________ Description of Detector Location: ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ Tes