Air duct detector inlet sampling tube | System Sensor DH400ACDCP

Figure 4. Air duct detector inlet sampling tube:

FLANGE	AIR HOLES	INLET
FLANGE		INLET
		TUBE
		END
		PLUG

ARROWS	AIR FLOW DIRECTION
MUST FACE
INTO AIR FLOW

H0108-00

Figure 5. Tube mounting configurations with varying air flow direction:

DOTS INDICATE POSITION OF

SAMPLING TUBE HOLES

	AIR FLOW	AIR FLOW
		DIRECTION
	DIRECTION

DETECTOR HOUSING

INLET

TUBE

DETECTOR

HOUSING

A.		B.
EXHAUST	EXHAUST	INLET
TUBE	TUBE	TUBE

HORIZONTAL MOUNTING OF HOUSING

EXHAUST
TUBE	DETECTOR
	DETECTOR
	HOUSING

	EXHAUST
AIR FLOW	TUBE		AIR FLOW
AIR FLOW			AIR FLOW
DIRECTION			DIRECTION
	INLET	INLET
DETECTOR	TUBE	TUBE	D.
HOUSING	C.		D.

VERTICAL MOUNTING OF HOUSING

H0109-00

[5.4.1] Installation For Ducts Less Than 8 Feet Wide

1.If the tube is longer than the width of the air duct, drill a 3/4-inch hole in the duct directly opposite the hole already cut for the inlet tube. If the tube is shorter than the width of the air duct, install the end plug into the inlet tube as shown in Figure 4. Sampling tubes over 3 ft. long must be supported at the end opposite the duct detector.

2.Slide the tube into the centermost housing bushing. Po- sition the tube so that the arrows point into the air flow.

3.Secure the tube flange to the housing bushing with 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 length using Table 1. Otherwise, trim the end of the tube protruding through the duct so that 1 to 2 inches of the tube extend

outside the duct. Plug this end with the end plug and tape closed any holes in the protruding section of the tube. Be sure to seal the duct when the tube protrudes.

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 ex- posed to the air stream.

[5.4.2] Installation For Ducts More Than 8 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 ST-10 inlet sampling tube. If the tube is shorter than the width of the air duct, install the end plug into the inlet tube as shown in Figure 4 and support the end opposite the duct detector.

D400-13-00

I56-555-09R

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.