低限防凍保護開關(guān)，保護空氣處理系統(tǒng)中的冷卻盤管，防止結(jié)霜。恒溫器和它的毛細傳感元件通過感應(yīng)毛細任意一英尺截面上的最低溫度來提供防凍功能。DPDT手動或自動復(fù)位繼電器向樓宇管理系統(tǒng)發(fā)出信號，并切斷風(fēng)機。該系列DFS2將檢測低于固定安全值(設(shè)定值)的溫度，該設(shè)定值可通過可視設(shè)定點指示器和設(shè)定點螺釘設(shè)置為低至34°F(1°C)
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.
| Model |
Description |
| DFS2-DA10 |
Low limit temperature control, 10 ft capillary with automatic reset |
| DFS2-DA20 |
Low limit temperature control, 20 ft capillary with automatic reset |
| DFS2-DM10 |
Low limit temperature control, 10 ft capillary with manual reset |
| DFS2-DM20 |
Low limit temperature control, 20 ft capillary with manual reset | |
