Daikin RXYQ38MY1B [18/42] Main features

Daikin RXYQ38MY1B [18/42] Main features
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6
Systems • Introduction
17
• Introduction
6Main features
6-3 High reliability
6-3-3 Duty cycling
The cyclical start-up sequence of multiple outdoor unit systems equalises compressor duty and extends operating life.
6-3-4 Special oil equalising technology
The incorporation of this technology ensures that the optimum quantity of oil is contained in each outdoor unit module in order to maintain compressor
reliability. Automatic checks are carried out every 6 minutes on the number of compressors in operation and also to ascertain that there is enough oil to
keep them running. In the event of a shortage being indicated, oil can be piped from other outdoor units in the system via the oil balancing pipe linking
multiple systems.
Each compressor in a VRV II outdoor unit is equipped with an internal oil equalising circuit, comprising an oil separator and oil return circuit. This ensures
that the maximum quantity of oil is returned to the compressor case before entering the REFNET piping network. The oil equalising circuit of each
outdoor unit is linked to those of the other outdoor units, allowing additional reliability and oil circulation during partial load operations.
6-3-5 No standby equipment required
Conventional VAV (Variable Air Volume) systems and chiller/fan coil systems require expensive and bulky standby units in case of breakdown. Since most
outdoor units of the VRV system comprise a number of independent compressors, the system as a whole will continue to function in the event of a unit
breakdown.

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