DFS2-DM20

DFS2-DM20 is a series DFS2 low limit freeze protection switch which protects cooling coils in air handler systems by preventing frost build up. The thermostat and its capillary sensing element provide an antifreeze function by sensing the lowest temperature along any one foot section of capillary. The DPDT manual reset relay signal the building management system as well as cut off the fan. The series DFS2 will detect temperature drops below the fixed safety value (set point) which can be set as low as 34°F (1°C) utilizing the visual set point indicator and set point screw. Typical applications include HVAC equipment and heat exchangers and cooling coils.

• 609cm capillary length, manual reset action
• Vapor-filled copper capillary sensing element
• Joint spring protector at capillary-bellow connection
• Set point safety-lock protection and simple adjustment
• Easy installation and wiring
• NEMA 1 (IP40) enclosure rating
• 1 x M20 compression fitting cable entry
• Galvanized steel base enclosure, ABS cover