APC duct detectors sample air inside HVAC ductwork. Their alarm and trouble outputs can be integrated with the specified fire alarm and ventilation controls.
Model specifications, airflow limits and test access
How the products work
Duct smoke detector performance depends on air velocity, sampling-tube orientation, duct size and access for testing.
Remote indicators, test stations and relays must match the detector model and fire-alarm or HVAC interface design.
Shutdown, damper and fan logic should be documented with the mechanical and fire strategies.
Frequently asked questions
Quick answers
Is APC The Same As The UPS Manufacturer?
No. This page covers Air Products & Controls at apcfire.com, the manufacturer of duct detection and related equipment.
What Does A Duct Smoke Detector Do?
It samples air moving through a ventilation duct and provides an alarm signal when it detects smoke. The designed control sequence determines the system response.
How Do I Choose A Sampling Tube?
Use the detector instructions and the duct width. Check the installation position, airflow direction and tube arrangement before ordering.
Which Model Is Intended For Exposed Locations?
The RT-3000 has a NEMA 4X weatherproof enclosure. Check its temperature and installation limits for the actual location.
Can I Connect It To A Building Management System?
APC provides relay outputs for integration. Check voltage, contact ratings, supervision and the required alarm and trouble signals against the wiring diagram.
What Information Helps Identify An Existing Detector?
Send the full housing and detector-head part numbers, power supply details and photographs of the label and connections.
Can You Help Identify A Replacement?
Send the full part number and clear photographs of the equipment label. Include the system it connects to so the replacement can be checked.
What Should I Include In My Enquiry?
Include the model or project drawings, quantity, delivery country, required date and any specified approvals.
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Send your drawings, required models and delivery location. We can help identify the products and documents you need.
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