Danfoss Service Thermostats Type 077B7
This document provides installation guidance and technical specifications for the Danfoss 077B7 series of service thermostats. These thermostats are designed for various refrigeration applications.
Service Thermostat 077B7099
Application: Ice-cream cabinets and freezers without signal
Temperature Settings:
- Cut-in: -8.5 °C
- Cut-out: -24 °C
Electrical Specifications:
- Rated: 8 - 40 A
- Terminals: 3, 4
- Diagram Symbols: ⚡ [Rated 8-40A], ? [LS], ? [OC]
Physical Specifications:
- Capillary Length: L = 1200 +30/-0 mm
- Min. Sensor Length on Evaporator: LS = 95 mm (Used as airsensor min. 2 x LS)
Diagram Description: A diagram illustrates temperature ranges and electrical connections. It shows operational states (Off, Warm, Cold Setting pos.) and indicates cut-in at -8.5°C and cut-out at -24°C. Terminals 3 and 4 are shown.
Service Thermostat 077B7100
Application: Commercial refrigerators
Temperature Settings:
- Cut-in: +8.5 °C
- Cut-out: -9.5 °C
Electrical Specifications:
- Terminals: 3, 4
- Diagram Symbols: ? [LS], ? [OC]
Physical Specifications:
- Capillary Length: L = 1200 +30/-0 mm
- Min. Sensor Length on Evaporator: LS = 95 mm (Used as airsensor min. 2 x LS)
Diagram Description: A diagram illustrates temperature ranges and electrical connections for commercial refrigerators. It shows operational states (Off, Warm, Cold Setting pos.) and indicates cut-in at +8.5°C and cut-out at -9.5°C. Terminals 3 and 4 are shown.
Service Thermostat 077B7101
Application: Bottle and liquid coolers
Temperature Settings:
- Cut-in: +12.5 °C
- Cut-out: +1.5 °C
Electrical Specifications:
- Terminals: 3, 4
- Diagram Symbols: ? [LS], ? [OC]
Physical Specifications:
- Capillary Length: L = 1200 +30/-0 mm
- Min. Sensor Length on Evaporator: LS = 100 mm (Used as airsensor min. 2 x LS)
Diagram Description: A diagram illustrates temperature ranges and electrical connections for bottle and liquid coolers. It shows operational states (Off, Warm, Cold Setting pos.) and indicates cut-in at +12.5°C and cut-out at +1.5°C. Terminals 3 and 4 are shown.
Service Thermostat 077B7102
Application: Ice-cream cabinets and freezers without signal
Temperature Settings:
- Cut-in: -9.5 °C
- Cut-out: -24.5 °C
Electrical Specifications:
- Terminals: 3, 4
- Diagram Symbols: ? [LS], ? [OC]
Physical Specifications:
- Capillary Length: L = 1200 +30/-0 mm
- Min. Sensor Length on Evaporator: LS = 95 mm (Used as airsensor min. 2 x LS)
Diagram Description: A diagram illustrates temperature ranges and electrical connections for ice-cream cabinets and freezers. It shows operational states (Off, Warm, Cold Setting pos.) and indicates cut-in at -9.5°C and cut-out at -24.5°C. Terminals 3 and 4 are shown.
Service Thermostat 077B7103
Application: Refrigerators with push button defrost
Temperature Settings:
- Cut-in: +6 °C
- Cut-out: -11 °C
- Defrost: [Indicated on diagram]
Electrical Specifications:
- Rated: 8 - 40 A
- Terminals: 3, 4
- Special Label: "No Name"
- Diagram Symbols: ⚡ [Rated 8-40A], ? [LS], ? [OC]
Physical Specifications:
- Capillary Length: L = 1000 +30/-0 mm
- Min. Sensor Length on Evaporator: LS = 105 mm (Used as airsensor min. 2 x LS)
Diagram Description: A diagram illustrates temperature ranges, defrost function, and electrical connections for refrigerators with push button defrost. It shows operational states (Off, Defrost, Warm, Cold Setting pos.) and indicates cut-in at +6°C and cut-out at -11°C. Terminals 3 and 4 are shown.
Service Thermostat 077B7104
Application: Refrigerators with automatic defrost
Temperature Settings:
- Cut-in: +3.5 °C
- Cut-out: -12.5 °C
Electrical Specifications:
- Terminals: 3, 4, 6
- Diagram Symbols: ? [LS], ? [OC]
Physical Specifications:
- Capillary Length: L = 1000 +30/-0 mm
- Min. Sensor Length on Evaporator: LS = 100 mm (Used as airsensor min. 2 x LS)
Diagram Description: A diagram illustrates temperature ranges and electrical connections for refrigerators with automatic defrost. It shows operational states (Off, Warm, Cold Setting pos.) and indicates cut-in at +3.5°C and cut-out at -12.5°C. Terminals 3, 4, and 6 are shown.
Service Thermostat 077B7105
Application: Commercial refrigerators
Temperature Settings:
- Cut-in: +8.5 °C
- Cut-out: -9.5 °C
Electrical Specifications:
- Terminals: 3, 4
- Diagram Symbols: ? [LS], ? [OC]
Physical Specifications:
- Capillary Length: L = 1200 +30/-0 mm
- Min. Sensor Length on Evaporator: S = 95 mm (Used as airsensor min. 2 x LS)
Diagram Description: A diagram illustrates temperature ranges and electrical connections for commercial refrigerators. It shows operational states (Off, Warm, Cold Setting pos.) and indicates cut-in at +8.5°C and cut-out at -9.5°C. Terminals 3 and 4 are shown.
Service Thermostat 077B7108
Application: Bottle and liquid coolers
Temperature Settings:
- Cut-in: +15.2 °C
- Cut-out: +0.5 °C
Electrical Specifications:
- Terminals: 3, 4
- Diagram Symbols: ? [LS], ? [OC]
Physical Specifications:
- Capillary Length: L = 1200 +30/-0 mm
- Min. Sensor Length on Evaporator: LS = 100 mm (Used as airsensor min. 2 x LS)
Diagram Description: A diagram illustrates temperature ranges and electrical connections for bottle and liquid coolers. It shows operational states (Off, Warm, Cold Setting pos.) and indicates cut-in at +15.2°C and cut-out at +0.5°C. Terminals 3 and 4 are shown.
Service Thermostat 077B7109
Application: Bottle and liquid coolers
Temperature Settings:
- Cut-in: +10.5 °C
- Cut-out: -4.5 °C
Electrical Specifications:
- Terminals: 3, 4
- Diagram Symbols: ? [LS], ? [OC]
Physical Specifications:
- Capillary Length: L = 1200 +30/-0 mm
- Min. Sensor Length on Evaporator: LS = 85 mm (Used as airsensor min. 2 x LS)
Diagram Description: A diagram illustrates temperature ranges and electrical connections for bottle and liquid coolers. It shows operational states (Off, Warm, Cold Setting pos.) and indicates cut-in at +10.5°C and cut-out at -4.5°C. Terminals 3 and 4 are shown.
Service Thermostat 077B7274
Application: Refrigerators with automatic defrost
Temperature Settings:
- Cut-in: +4.5 °C
- Cut-out: -10.5 °C
Electrical Specifications:
- Terminals: 3, 4
- Diagram Symbols: ? [LS], ? [OC]
Physical Specifications:
- Capillary Length: L = 900 +30/-0 mm (Airsensor)
- Min. Sensor Length on Evaporator: LS = 85 mm (Used as airsensor min. 2 x LS)
Diagram Description: A diagram illustrates temperature ranges and electrical connections for refrigerators with automatic defrost. It shows operational states (Off, Warm, Cold Setting pos.) and indicates cut-in at +4.5°C and cut-out at -10.5°C. Terminals 3 and 4 are shown.
Service Thermostat 077B7242
Application: 1 door refrigerators, warm defrost
Temperature Settings:
- Cut-in: +3.1 °C
- Cut-out: -8.8 °C
- Defrost: [Indicated on diagram]
Electrical Specifications:
- Rated: 8 - 40 A
- Terminals: 3, 4
- Diagram Symbols: ⚡ [Rated 8-40A], ? [LS], ? [OC]
Physical Specifications:
- Capillary Length: L = 1300 +50/-0 mm
- Min. Sensor Length on Evaporator: LS = 90 mm (Used as airsensor min. 2 x LS)
Diagram Description: A diagram illustrates temperature ranges, defrost function, and electrical connections for 1-door refrigerators with warm defrost. It shows operational states (Off, Defrost, Warm, Cold Setting pos.) and indicates cut-in at +3.1°C and cut-out at -8.8°C. Terminals 3 and 4 are shown.
Service Thermostat 077B7049
Application: Double function appliances
Temperature Settings:
- Cut-in: +5.3 °C
- Cut-out: -17.8 °C
Electrical Specifications:
- Rated: 8 - 40 A
- Terminals: 3, 4
- Diagram Symbols: ⚡ [Rated 8-40A], ? [LS], ? [OC]
Physical Specifications:
- Capillary Length: L = 1200 +50/-0 mm
- Min. Sensor Length on Evaporator: LS = 110 mm (Used as airsensor min. 2 x LS)
Diagram Description: A diagram illustrates temperature ranges and electrical connections for double function appliances. It shows operational states (Off, Warm, Cold Setting pos.) and indicates cut-in at +5.3°C and cut-out at -17.8°C. Terminals 3 and 4 are shown.
Service Thermostat 077B7050
Application: 1 door refrigerators, warm defrost
Temperature Settings:
- Cut-in: +6.5 °C
- Cut-out: -11.0 °C
Electrical Specifications:
- Rated: 8 - 40 A
- Terminals: 3, 4
- Diagram Symbols: ⚡ [Rated 8-40A], ? [LS], ? [OC]
Physical Specifications:
- Capillary Length: L = 1200 +50/-0 mm
- Min. Sensor Length on Evaporator: LS = 110 mm (Used as airsensor min. 2 x LS)
Diagram Description: A diagram illustrates temperature ranges and electrical connections for 1-door refrigerators with warm defrost. It shows operational states (Off, Warm, Cold Setting pos.) and indicates cut-in at +6.5°C and cut-out at -11.0°C. Terminals 3 and 4 are shown.
Accessories
Accessories for 077B7099
Components shown in the accessory diagram for model 077B7099 include a knob, mounting plate, capillary tube with sensor, and the thermostat body with terminals 3 and 4.
Accessories for 077B7100, 077B7101, 077B7102, 077B7105, 077B7108, 077B7109, 077B7242, 077B7049, 077B7050
Components shown in the accessory diagrams for these models include a knob, mounting plate, capillary tube with sensor, and the thermostat body with terminals 3 and 4.
Accessories for 077B7103
Components shown in the accessory diagram for model 077B7103 include a knob, mounting plate, capillary tube with sensor, and the thermostat body with terminals 3 and 4.
Accessories For 077B7104
Components shown in the accessory diagram for model 077B7104 include a knob, mounting plate, capillary tube with sensor, and the thermostat body with terminals 3, 4, and 6.
Accessories for 077B7274
Components shown in the accessory diagram for model 077B7274 include a knob, mounting plate, capillary tube with sensor, and the thermostat body with terminals 3 and 4.
General Notes
The 077B....EBD, 077B....L EBD series thermostats can be applied on systems with R290 and R600a as the working fluid. For countries where safety standards are not an indispensable part of the safety system, Danfoss recommends the installer to get a third-party approval of the system containing flammable refrigerant.
Note: All temperatures are specified at 760 mm Hg, except for model 077B7242 which is specified at 700 mm Hg.
