The Thermoflex® product group includes standard detectors as well as detectors for hazardous locations and moisture-proof applications. Each detector is available in single or multiple circuits with open and/or closed contact configurations. The prefix CF in the model number denotes rate-of-rise and fixed temperature operation. The prefix CF denotes fixed temperature only. The standard fixed temperature settings are 135°F and 200°F. Units set at 165°F and 285°F are also available.
The CF135W is a fixed temperature only detector. The fixed temperature portion consists of a spring-loaded plunger retained by a fusible alloy that releases when the ceiling temperature reaches 135°F (57°C). When released, the plunger strikes a normally open set of contacts and holds them closed. Spacing on an uninterrupted ceiling is 40 (12.5m). The CF135 is identified by a black dot on its heat collector fin.
