Description
The Kele 6302-0171 is a purpose-built gas detection sensor designed to continuously monitor for the presence of R454B refrigerant — a next-generation, low-GWP A2L refrigerant blend increasingly used as a replacement for R410A and other legacy refrigerants. Engineered for demanding commercial and industrial HVAC environments, this detector combines a rugged IP66-rated enclosure with Modbus communication for seamless integration into building automation and management systems.
Key Features
- Designed specifically for R454B (A2L low-GWP refrigerant) leak detection
- IP66-rated enclosure — fully dust-tight and protected against powerful water jets for use in harsh or wet environments
- Modbus communication protocol (RS-485) enables direct integration with BAS, BMS, and DDC controllers
- Continuous gas monitoring provides early warning of refrigerant leaks to protect personnel and equipment
- Supports compliance with ASHRAE 15, EN 378, and other refrigerant safety standards requiring leak detection for A2L refrigerants
- Suitable for mechanical rooms, rooftop units, chiller plants, and other refrigerant-containing spaces
R454B Refrigerant Detection
R454B (marketed as Opteon™ XL41) is an A2L mildly flammable refrigerant with a significantly lower global warming potential than R410A. As the HVAC industry transitions to next-generation refrigerants, proper leak detection is not only a best practice but increasingly a code requirement. The Kele 6302-0171 is specifically calibrated for R454B, ensuring accurate and reliable detection at the concentrations that matter.
Modbus Integration
The Modbus output allows facility managers and controls technicians to monitor gas levels in real time through a central building automation system. Alarm thresholds, sensor status, and concentration readings can be polled directly over an RS-485 network, reducing the need for dedicated standalone alarm panels and simplifying system-wide commissioning.
Rugged IP66 Construction
The IP66 ingress protection rating ensures the detector performs reliably in environments exposed to dust, debris, and direct water spray — making it ideal for outdoor-rated enclosures, wash-down areas, and rooftop mechanical applications where lesser-rated sensors may fail prematurely.
Applications
- Commercial refrigeration and HVAC mechanical rooms
- Chiller and heat pump installations using R454B
- Rooftop and outdoor condensing unit areas
- Industrial process cooling environments
- Any facility requiring code-compliant A2L refrigerant leak detection
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