DFS2-DM20    | Low limit temperature control | 20 ft capillary with manual reset  |   Dwyer
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Brand: DwyerSKU: DFS2-DM20

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$411.75
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DFS2-DM20 | Low limit temperature control | 20 ft capillary with manual reset | Dwyer

Low limit temperature control, 20 ft capillary with manual reset

Dwyer | DFS2-DM20
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Overview

Details for DFS2-DM20

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Low limit temperature control | 20 ft capillary with manual reset

SERIES DFS2 LOW LIMIT FREEZE PROTECTION SWITCH

Manual and Automatic Reset

The Series DFS2 Low Limit Freeze Protection Switch protects cooling coils in airhandler systems by preventing frost build up. The thermostat and its capillary sensingelement provide an antifreeze function by sensing the lowest temperature along anyone foot section of capillary. The DPDT manual or automatic reset relays signal thebuilding management system as well as cut off the fan. The Series DFS2 will detecttemperature drops below the fixed safety value (set point) which can be set as low as34°F (1°C) utilizing the visual set point indicator and set point screw.

Product Applications

  • HVAC equipment
  • Heat exchangers and cooling coils
  • 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
  • Automatic and manual reset

Specifications

Series
DFS2 LOW LIMIT FREEZE PROTECTION SWITCH
Sensing Element
Vapor-filled capillary.
Operating Temperature
14°F to 54°F (-10°C to 12°C).
Storage Temperature
14°F to 158°F (-10°C to 70°C).
Capillary Overload Temperature
392°F (200°C); maximum 60 minutes.
Humidity Limit
0 to 95% RH; non-condensing.
Enclosure
Galvanized steel base; ABS cover.
Enclosure Rating
NEMA 1 (IP40).
Capillary Material
Copper.
Cable Entry
(1) M20 compression fitting.
Reset Action
Available in automatic or manual reset options.
Low-level Setpoint
Factory Set: 39°F (4°C); and safety lock secured; Adjustment via screwdriver slot.
Wire Connection
Terminal with wire-retaining screws.
Wire Size
Max. 14 AWG.
Electrical Rating
24 to 250 VAC; 15 (8) A.
Electrical Connections
Two each NO/NC/Common.
Deadband
1.8°F (fixed).
Weight
1.6 lb (0.7 kg).
Agency Approvals
CE.

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