Heatcraft Refrigeration 4751C Defrost Thermostat
The Heatcraft Refrigeration 4751C Defrost Thermostat is a critical fixed-setting control designed for commercial refrigeration system maintenance and efficiency. Specifically engineered as a 55CLS 35OPN defrost thermostat, this 3-wire component manages the defrost termination and fan delay cycles within the evaporator coil assembly. This unit is calibrated to close the circuit at 55?F to terminate the defrost heater and open at 35?F to re-engage the fans, effectively preventing warm moist air from being exhausted into the refrigerated space following a cycle. For veteran technicians, the 4751C is a standard replacement part that ensures the structural integrity of the evaporator coil by preventing excessive ice accumulation while maintaining thermal stability. Its Bohn defrost thermostat pedigree makes it compatible with a wide range of legacy and modern Heatcraft unit coolers, offering a drop-in solution for contractors focused on high-performance HVACR refrigeration parts and reduced system downtime.
Key Benefits- Precise Thermal Control: Features fixed 55?F Close and 35?F Open settings for reliable defrost termination automation.
- Enhanced System Efficiency: Integrated fan delay functionality prevents post-defrost moisture blow-off and heat spikes.
- Rugged Construction: Built to withstand the high-humidity, low-temperature environments typical of commercial walk-ins and freezers.
- Universal Compatibility: Designed for seamless integration with Heatcraft, Bohn, Chandler, and Larkin refrigeration units.
- Simplified Installation: Standard 3-wire lead configuration allows for rapid field replacement during service calls.
Is the 4751C suitable for low-temperature freezer applications?
Yes. This thermostat is specifically designed to manage the transition from defrost back to cooling, which is essential for preventing ice buildup in freezers.
Does this unit control both the heater and the fans?
It serves as a dual-function control; it terminates the defrost heaters based on temperature and delays the fans until the coil reaches the 35?F setpoint.
Can I use this as a replacement for other 55/35 thermostats?
While the 4751C is a standard Heatcraft part, always verify your specific wiring diagram to ensure the 3-wire configuration matches your existing terminal block.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $65.57
-65%$65.57
$22.95Heatcraft Refrigeration 4751C Defrost Thermostat
The Heatcraft Refrigeration 4751C Defrost Thermostat is a critical fixed-setting control designed for commercial refrigeration system maintenance and efficiency. Specifically engineered as a 55CLS 35OPN defrost thermostat, this 3-wire component manages the defrost termination and fan delay cycles within the evaporator coil assembly. This unit is calibrated to close the circuit at 55?F to terminate the defrost heater and open at 35?F to re-engage the fans, effectively preventing warm moist air from being exhausted into the refrigerated space following a cycle. For veteran technicians, the 4751C is a standard replacement part that ensures the structural integrity of the evaporator coil by preventing excessive ice accumulation while maintaining thermal stability. Its Bohn defrost thermostat pedigree makes it compatible with a wide range of legacy and modern Heatcraft unit coolers, offering a drop-in solution for contractors focused on high-performance HVACR refrigeration parts and reduced system downtime.
Key Benefits- Precise Thermal Control: Features fixed 55?F Close and 35?F Open settings for reliable defrost termination automation.
- Enhanced System Efficiency: Integrated fan delay functionality prevents post-defrost moisture blow-off and heat spikes.
- Rugged Construction: Built to withstand the high-humidity, low-temperature environments typical of commercial walk-ins and freezers.
- Universal Compatibility: Designed for seamless integration with Heatcraft, Bohn, Chandler, and Larkin refrigeration units.
- Simplified Installation: Standard 3-wire lead configuration allows for rapid field replacement during service calls.
Is the 4751C suitable for low-temperature freezer applications?
Yes. This thermostat is specifically designed to manage the transition from defrost back to cooling, which is essential for preventing ice buildup in freezers.
Does this unit control both the heater and the fans?
It serves as a dual-function control; it terminates the defrost heaters based on temperature and delays the fans until the coil reaches the 35?F setpoint.
Can I use this as a replacement for other 55/35 thermostats?
While the 4751C is a standard Heatcraft part, always verify your specific wiring diagram to ensure the 3-wire configuration matches your existing terminal block.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Description
The Heatcraft Refrigeration 4751C Defrost Thermostat is a critical fixed-setting control designed for commercial refrigeration system maintenance and efficiency. Specifically engineered as a 55CLS 35OPN defrost thermostat, this 3-wire component manages the defrost termination and fan delay cycles within the evaporator coil assembly. This unit is calibrated to close the circuit at 55?F to terminate the defrost heater and open at 35?F to re-engage the fans, effectively preventing warm moist air from being exhausted into the refrigerated space following a cycle. For veteran technicians, the 4751C is a standard replacement part that ensures the structural integrity of the evaporator coil by preventing excessive ice accumulation while maintaining thermal stability. Its Bohn defrost thermostat pedigree makes it compatible with a wide range of legacy and modern Heatcraft unit coolers, offering a drop-in solution for contractors focused on high-performance HVACR refrigeration parts and reduced system downtime.
Key Benefits- Precise Thermal Control: Features fixed 55?F Close and 35?F Open settings for reliable defrost termination automation.
- Enhanced System Efficiency: Integrated fan delay functionality prevents post-defrost moisture blow-off and heat spikes.
- Rugged Construction: Built to withstand the high-humidity, low-temperature environments typical of commercial walk-ins and freezers.
- Universal Compatibility: Designed for seamless integration with Heatcraft, Bohn, Chandler, and Larkin refrigeration units.
- Simplified Installation: Standard 3-wire lead configuration allows for rapid field replacement during service calls.
Is the 4751C suitable for low-temperature freezer applications?
Yes. This thermostat is specifically designed to manage the transition from defrost back to cooling, which is essential for preventing ice buildup in freezers.
Does this unit control both the heater and the fans?
It serves as a dual-function control; it terminates the defrost heaters based on temperature and delays the fans until the coil reaches the 35?F setpoint.
Can I use this as a replacement for other 55/35 thermostats?
While the 4751C is a standard Heatcraft part, always verify your specific wiring diagram to ensure the 3-wire configuration matches your existing terminal block.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
