As a building owner or maintenance personnel, it is important to ensure the safety of the occupants. One of the crucial components of fire safety systems is the air products duct detector. The duct detector is responsible for detecting smoke or fire in the HVAC (Heating, Ventilation, and Air Conditioning) system, and alerting the occupants to evacuate the building. In this article, we will provide you with a comprehensive guide on air products duct detector wiring diagram.
What is an Air Products Duct Detector?
An air products duct detector is a device that detects smoke or fire in the HVAC system. It is typically installed within the ductwork of the air conditioning or ventilation system. The duct detector consists of a smoke or heat sensor, a control module, and an alarm.
The sensor detects the presence of smoke or fire in the ductwork and sends a signal to the control module. The control module then activates the alarm, which alerts the occupants to evacuate the building. The duct detector is an essential component of the fire safety system and is required by codes and standards.
Types of Air Products Duct Detector
There are two types of air products duct detector:
- Smoke Detector
- Heat Detector
Smoke Detector
A smoke detector is a device that detects the presence of smoke particles in the air. The smoke detector works by analyzing the air around it and detecting the presence of small particles that are invisible to the naked eye. When smoke particles are detected, the smoke detector sends a signal to the control module, which activates the alarm.
Heat Detector
A heat detector is a device that detects the presence of heat in the air. The heat detector works by analyzing the temperature around it and detecting a rise in temperature. When a rise in temperature is detected, the heat detector sends a signal to the control module, which activates the alarm.
Air Products Duct Detector Wiring Diagram
The air products duct detector wiring diagram consists of several components:
- Duct Detector
- Power Supply
- Control Module
- Notification Appliance (Alarm)
Duct Detector Wiring
The duct detector wiring consists of two wires: positive (+) and negative (-). The positive wire is connected to the control module’s T terminal, and the negative wire is connected to the control module’s F terminal.
The duct detector wiring must also be connected to the HVAC system’s power supply. The power supply voltage must match the duct detector’s voltage rating.
Duct Detector Wiring Diagram
| Wire Color | Function | Cable Type |
|---|---|---|
| Brown | Positive (+) | 18 AWG |
| Blue | Negative (-) | 18 AWG |
Power Supply Wiring
The power supply wiring consists of two wires: positive (+) and negative (-). The positive wire is connected to the control module’s A+ terminal, and the negative wire is connected to the control module’s B- terminal.
The power supply must be rated for the duct detector’s voltage and amperage requirements.
Power Supply Wiring Diagram
| Wire Color | Function | Cable Type |
|---|---|---|
| Red | Positive (+) | 16 AWG |
| Black | Negative (-) | 16 AWG |
Control Module Wiring
The control module wiring consists of several wires:
- T Terminal
- F Terminal
- A+ Terminal
- B- Terminal
- Ground Wire
The T terminal and F terminal are for the duct detector wiring. The A+ terminal and B- terminal are for the power supply wiring. The ground wire is for grounding the control module.
Control Module Wiring Diagram
| Wire Color | Function | Cable Type |
|---|---|---|
| Red | T Terminal | 18 AWG |
| Black | F Terminal | 18 AWG |
| Red | A+ Terminal | 16 AWG |
| Black | B- Terminal | 16 AWG |
| Green | Ground Wire | 16 AWG |
Notification Appliance Wiring
The notification appliance wiring consists of two wires: positive (+) and negative (-). The positive wire is connected to the control module’s NAC+ terminal, and the negative wire is connected to the control module’s NAC- terminal.
The notification appliance can be an alarm, strobe light, or other device that alerts the occupants of the building to evacuate.
Notification Appliance Wiring Diagram
| Wire Color | Function | Cable Type |
|---|---|---|
| Red | Positive (+) | 16 AWG |
| Black | Negative (-) | 16 AWG |
FAQ
Why do I need an air products duct detector?
An air products duct detector is a required component of the fire safety system. It detects smoke or fire in the HVAC system and alerts the occupants to evacuate the building.
How often should I test the air products duct detector?
The air products duct detector should be tested according to the manufacturer’s recommendations and local codes and standards. Typically, the duct detector should be tested every six months.
What happens if the air products duct detector detects smoke or fire?
If the air products duct detector detects smoke or fire, it sends a signal to the control module, which activates the alarm. The alarm alerts the occupants to evacuate the building.
Can I install the air products duct detector myself?
The installation of the air products duct detector should be done by a qualified professional who is knowledgeable about codes and standards. Improper installation can lead to malfunction and failure of the fire safety system.
What should I do if the air products duct detector alarm goes off?
If the air products duct detector alarm goes off, evacuate the building immediately and call the fire department. Do not re-enter the building until the fire department has given clearance.
In conclusion, the air products duct detector wiring diagram is a crucial component of the fire safety system. It is important to ensure that the wiring is installed correctly by a qualified professional. Regular testing and maintenance of the duct detector can prevent malfunction and ensure the safety of the occupants.
