Instructions for Inhalation Smoke Detection

1、 Design Basis:

Design, Construction and Acceptance Specification for Inhalation Smoke Detection Fire Alarm System (DB11/1026-2013)

2Early Smoke Detection System for Air (Atlas No. 03X502 of China Building Standards Design and Research Institute)

3Design Specification for Automatic Fire Alarm System (GB50116-2013)

4Code for Construction and Acceptance of Automatic Fire Alarm System (GB50166-2019)

5Design Code for Electrical Fire Protection of Civil Buildings (DGJ08-2048-2016)

6Special Fire Detector GB15631-20081000000

二、Application Notes:

1.This project adopts a suction type smoke and fire detection system for the wind tunnel, which is directly installed in the protected area city:

2.The suction type blind smoke detection and alarm host installed on the site of the protected area can display functions such as warning, fire alarm, fault, and concentration bar indication

三、Construction Instructions:

1.The main unit of the suction type smoke fire detector is installed on the wall at a height of 15 meters above the ground in the protected area. The suction pipe is installed in an effective position at the top of the protected area. In addition, please note that there should be no obstacles within 0.5m around the inlet and outlet of the detection main unit, which may hinder the suction and exhaust;

2.The suction pipe adopts a straight connection, and each joint is sealed with glue to prevent air leakage. The connection between the pipeline and the detector inlet should be sealed, but not bonded；

3.The suction pipes are fixed with pipe clamps at intervals of 1.0 meter. Pipe elbows should use circular arc elbows, and right angle elbows are not allowed；

4.The diameter of the suction pipe opening and the end cap opening should be sorted as 2 "8mm in order. The opening and sequence must be confirmed by the manufacturer's disclosure before construction can proceed

5.For any matters related to construction that are not specified, please refer to the 08D800 series of "General Atlas of Building Electrical" and the national standard atlas 3X502; construction

四、Working principle:

Air sampling smoke detectors (specification name: inhalation smoke fire detectors) can generally form their own network system. The detector samples the air in the fire zone through a sampling tube using a suction pump. The air is sampled and analyzed by the laser gun inside the host to determine the concentration of smoke particles in the air. If the predetermined concentration is exceeded, the host will sound an alarm. When a fire occurs on site, an alarm can be triggered through a detector, and the C host in the fire control room will also sound an alarm, displaying the specific location of the fire. It can also be connected to the fire alarm system through an input module. The air sampling detector has a relay output, and the relay output signal is sent to the input module, which feeds back to the fire protection host to determine the location of the fire alarm.