Danfoss Surface Sump Heater | 80W, 230V | 120Z0389

Product Description: The 120Z0389 is a specialized surface sump heater engineered for Danfoss compressors. Unlike traditional belt heaters, this surface-style heater is designed for direct mounting to the compressor shell to provide targeted thermal energy to the oil reservoir. In the UAE’s demanding cooling environment, preventing “liquid slugging” is essential; the 120Z0389 keeps the lubricant warm during off-cycles, ensuring that refrigerant remains in a vapor state and does not condense into the oil. This is critical for maintaining proper lubrication during startup, especially for systems in Dubai and Abu Dhabi that may remain idle during cooler nights or in climate-controlled plant rooms. Its 80W output provides robust heating capacity for medium-to-large commercial compressors.

Key Features & Benefits:

• Targeted Thermal Transfer: Surface-mount design ensures efficient heat distribution directly to the compressor sump area.
• Prevents Compressor Damage: Eliminates the risk of liquid refrigerant entering the oil, which protects internal bearings and scrolls from premature wear in UAE units.
• Higher Wattage for Larger Units: 80W power output is ideal for higher-tonnage compressors requiring significant thermal maintenance.
• Standard 230V Operation: Fully compatible with UAE electrical standards and typical HVAC control circuit voltages.
• Durable & Long-Lasting: Constructed with high-quality materials to resist the thermal and mechanical stresses of continuous industrial operation in the Middle East.

Technical Specifications:

FAQs:

• Q: Why choose an 80W surface heater (120Z0389) over a belt heater in the UAE?
• A: Surface heaters are often preferred for specific compressor geometries where a belt may not fit perfectly, providing better direct contact and heat transfer to the oil sump.
• Q: Is this 80W model energy-efficient for Dubai projects?
• A: Yes, while it provides powerful heating, it is typically only energized when the compressor is off, ensuring maximum protection with minimal total energy impact.
• Q: How can a UAE technician ensure it is mounted correctly?
• A: It should be mounted on a clean, dry surface at the lowest point of the compressor shell where the oil collects, ensuring maximum heat transfer to the lubricant.