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DFS2-DA10 | Low limit temperature control | 10 ft capillary with automatic reset | Dwyer
Low limit temperature control, 10 ft capillary with automatic reset
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Overview
Details for DFS2-DA10
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Low limit temperature control | 10 ft capillary with automatic 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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