Introduction
The oil heater ensures the lubricity of the oil even after longer standstills. It prevents greater refrigerant accumulation in the oil and thus viscosity reduction. The oil heater must be operated at compressor standstill
- if the compressor is installed outdoors,
- in case of long standstill periods,
- with large refrigerant charges,
- if there is a risk of refrigerant condensation in the compressor.
This document gives an overview of the available oil heaters for compressors and oil separators.
For better readability, the part numbers are indicated with spaces (e.g. 343 208 01). When searching, this must be taken into account and the blanks inserted.
Dimensional drawings and further technical data for each compressor are available in the BITZER SOFTWARE. Spare parts are also listed in the spare parts catalogue ePARTS and can be found with the help of exploded drawings – if necessary, also note the "Alternative parts" (2nd column).
When installing or replacing the oil heater, it is essential to observe the operating instructions for the respective compressor! For mounting and electrical connection of the oil heaters, see also:
- AW-150: Heaters, mounting and electrical connection
Oil heaters for condensing units are basically the same as for the installed compressors – but in some cases not all options are available.
Authorized staff
All work done on the products and the systems in which they are or will be installed may only be performed by qualified and authorised staff who have been trained and instructed in all work. The qualification and competence of the qualified staff must correspond to the local regulations and guidelines.
Residual risks
The products, electronic accessories and further system components may present unavoidable residual risks. Therefore, any person working on it must carefully read this document! The following are mandatory:
- relevant safety regulations and standards
- generally accepted safety rules
- EU directives
- national regulations and safety standards
Depending on the country, different standards are applied when installing the product, for example: EN378, EN60204, EN60335, EN ISO14120, ISO5149, IEC60204, IEC60335, ASHRAE 15, NEC, UL standards.
Personal protective equipment
When working on systems and their components: Wear protective work shoes, protective clothing and safety goggles. In addition, wear cold-protective gloves when working on the open refrigeration circuit and on components that may contain refrigerant.
