For multi-stage heating

Built for the rugged demands of residential and light commercial hydronic systems

For HVAC blower shaft replacement

always verify the specific pinout and wire gauge requirements in the technical data sheet

preventing liquid slugging while maximizing heat exchange efficiency through the coil

Belimo EXT-OP-5502-250 Sensor R-22 For multi-stage heatingThe Belimo EXT OP 5502 250 is a precision engineered Carbon Monoxide (CO) sensor designed for demanding commercial HVAC applications, specifically targeted at indoor air quality (IAQ) monitoring in parking garages and mechanical spaces. This duct mounted CO sensor utilizes an advanced electrochemical sensing element to provide high accuracy ppm readings, ensuring reliable integration with Building Automation Systems (BAS) via a standard 2 10V or 4