Compressor description by Ralkin

General ECOLINE H Series Description

The ECOLINE H series represents the creative advancement of Bitzer's proven, robust, and powerful semi-hermetic reciprocating compressor range. It combines high efficiency, smooth running, a wide range of applications, and high reliability. Specifically designed as specialists for demanding conditions, this series features an additionally reinforced drive gear and lubrication system, making it ideal for high-temperature heat pumps and transport applications such as railway air conditioning. Key technical innovations include a new valve plate design with a geometric concept for low rear expansion, efficient broadband motors for full- and part-load operation, and the CRII capacity control system. The series is downward compatible, replacing predecessors with the same connection sizes.

Model Identification: 4EESH-6

Based on the standard nomenclature for the ECOLINE H series (e.g., 4EESH-6Y), the model breakdown is as follows:

• 4: Number of cylinders.
• E: Identification for bore x stroke.
• E: Series identifier within the ECOLINE family (specific displacement variant).
• S: ECOLINE series identifier.
• H: Special design for transport applications and high-temperature heat pumps (equipped with reinforced drive gear and lubrication system).
• 6: Motor size.
• (Note: While the request omitted the final letter, models in this series typically end with Y for polyolester oil BSE85K or S for other configurations. Given the H-series specialization, Y is the standard assumption).

Specifications & Data Summary

Model: 4EESH-6 (Mapped to 4EESH-6Y in technical data)

• Displacement at 50 Hz: 22.7 m³/h
• Heating Capacity (Qh): 18.98 kW
  • Rating Condition: R515B at tₑ/t꜀ = 30°C/85°C
• Oil Charge: 2.0 dm³
• Weight: 95 kg
• Max. Operating Current (Δ/Y Motor): 23.7 / 13.6 A
• Primary Refrigerants (H-Series High Temp): R1234ze(E), R515B, R245fa
• Primary Oil Charge: Polyolester oil BSE85K (for high-temperature design)