Description
The York S1-55000-335DCT is a photoelectric duct detector head engineered for dependable smoke detection within HVAC air distribution systems. Designed as a direct OEM replacement for compatible York equipment, this detector head integrates seamlessly into existing duct detector housings to help maintain building safety and code compliance.
How It Works
Photoelectric smoke detection technology uses light-scattering principles to identify the presence of smoke particles in moving airstreams. When smoke enters the sampling tube and reaches the detection chamber, the sensor triggers an alarm signal — allowing the HVAC system to shut down or initiate smoke-control sequences before smoke spreads throughout a building.
Key Features
- Photoelectric sensing technology for reliable smoke detection in duct applications
- Designed for installation within compatible duct detector housings
- OEM York replacement part — ensures proper fit and performance
- Supports HVAC system shutdown and smoke-control integration
- Helps meet fire and life safety code requirements for air-handling systems
Applications
- Commercial and light industrial HVAC air distribution systems
- Air handling units (AHUs) and fan coil systems
- Return and supply ductwork smoke detection
- Replacement of worn or end-of-life duct detector sensing heads
Why Choose the York S1-55000-335DCT
Using a genuine OEM York photoelectric duct detector head ensures compatibility, reliability, and compliance with the original equipment specifications. Keeping smoke detection components current is a critical part of any preventive maintenance program for commercial HVAC systems.







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