System Sensor DH400ACDCP specifications Drill The Mounting Holes, Install The Inlet

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feet 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.

[5.2] Drill The Mounting Holes

Remove the paper backing from the mounting template supplied. Affix the template to the duct at the desired mounting location. Make sure the template lies flat and smooth on the duct. Center punch holes A and B. 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 3.)

[5.3] Secure The Detector Housing To The Duct Remove the duct housing cover. Slide the foam gaskets over the tube bushings as shown in Figure 2. Make sure the two small holes in the gaskets line up with the two base mount- ing holes. Put one 5/16-inch O-ring over each of the two #10 sheet metal screws. Use the two sheet metal screws to screw the detector housing to the duct. CAUTION: Do not overtighten the screws.

Figure 2. Installation of foam gaskets over sampling tube bushings:

INLET SAMPLING DUCT DETECTOR

MOUNTING TUBE BUSHING HOUSING

SCREWS

O-RINGS

EXHAUST TUBE

 

(EXTENSION BUSHING)

 

FOAM GASKETS

SCREW HOLES FOR ATTACHING

DETECTOR HOUSING TO DUCT

H0238-00

Figure 3. Speed nut mounting location:

HOLE B

HOLE A

DUCT

WALL

SPEED

NUT

H0116-00

[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 ac- cessory in those cases where the molded exhaust port does not extend at least 2 inches into the duct.

The inlet tube is always installed in the centermost hous- ing bushing, with air inlet holes facing into the air flow. To assist proper installation, the tube’s mounting flange is marked with arrows. Make sure the inlet tube is mounted so that the arrows point into the air flow. Figure 5 shows the various combinations of tube mounting configurations with respect to air flow.

Mounting the detector housing in a vertical orientation is acceptable, provided that the air flows directly into the sampling tube holes as indicated in Figure 4.

Table 1. Inlet tubes required for different duct widths:

Outside Duct Width

Inlet Tube Required

1 to 2 ft.

ST-1.5

2 to 4 ft.

ST-3

4 to 8 ft.

ST-5

8 to 12 ft.

ST-10

D400-13-00

3

I56-555-09R

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Contents General Description Before InstallingTable of Contents List of Tables and FiguresStep Contents Of The Duct Detector KitInstallation Sequence Limitations Of Duct DetectorsOutside Duct Width Inlet Tube Required Install The InletDrill The Mounting Holes Inlet tubes required for different duct widthsAir duct detector inlet sampling tube Tube mounting configurations with varying air flow directionModifications Of Inlet Sampling Tubes Install the inlet tube as followsField Wiring Installation Guidelines Wiring InstructionsFor wiring Alarm RED Common Perform Detector Check Install The FiltersInstall The Cover Duct Detector Maintenance And Test ProceduresSmoke Response Filter ReplacementAlarm Tests 2.1 M02-04-00 Magnet Test Smoke Entry Tests Air FlowPhoto Heads Detector Cleaning ProceduresSensitivity Tests 3.1 MOD400R Sensitivity Test Air FiltersPhoto head exploded view ReinstallationDescription Test FeaturesMechanical Specifications AccessoriesElectrical Ratings Electrical SpecificationsD400-13-00 D400-13-00 Detector Test LOG Test Results and Maintenance Data

DH400ACDCP specifications

The System Sensor DH400ACDCP is a cutting-edge addressable smoke and heat detector specifically designed for commercial and industrial applications. Its advanced detection capabilities ensure a high level of safety in various environments, making it an essential component of modern fire alarm systems.

One of the standout features of the DH400ACDCP is its dual-sensing technology. This device combines both smoke and heat detection in a single unit, allowing for a more comprehensive approach to fire safety. The smoke detection is performed using a photoelectric sensor, which effectively identifies smoldering fires that produce a large amount of smoke, while the heat detector is designed to respond to rapid temperature increases and fixed temperature thresholds. This dual functionality ensures early notification in the event of a fire, enabling timely response.

The DH400ACDCP also incorporates System Sensor’s innovative analytics technology. This feature utilizes advanced algorithms to minimize false alarms while maintaining sensitivity to actual fire threats. By analyzing environmental conditions and historical data, the detector can distinguish between normal activities and potential fire indicators, thus reducing unnecessary interruptions.

In terms of installation and maintenance, the DH400ACDCP is designed for ease of use. It features a robust addressable communication system, which allows for straightforward integration into existing fire alarm panels. The unit can be easily configured through the panel, providing flexibility in customizing notifications and response protocols. Its durable construction ensures reliability, while routine diagnostics capabilities help monitor device health and facilitate maintenance efforts.

Another significant characteristic of the DH400ACDCP is its compatibility with system monitoring and control platforms. The detector can report its status and any potential issues directly to centralized monitoring stations, enabling rapid response to emergencies or maintenance needs. By integrating with modern building management systems, the DH400ACDCP contributes to an overall intelligent safety infrastructure.

Overall, the System Sensor DH400ACDCP offers a cutting-edge solution for fire safety in various environments, combining advanced detection technology, ease of integration, and robust performance. With its focus on minimizing false alarms while ensuring reliable detection, the DH400ACDCP stands as a critical asset for maintaining safety in commercial and industrial spaces.
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