VRV H series (Heatpump)

New heights in energy efficiency during actual operation

Features

Greater energy savings during low-load operation. High COP Performance

The key to innovative energy savings is to increase efficiency during low-load operation.
Using data gathered from actual operation, Daikin discovered that air conditioning systems operate at a load factor of 50% or less for 80% of their annual operation period.*
This inspired us to develop new technologies to enhance energy effciency during low-load operation.
Utilising these technologies, Daikin’s new VRV A series raises the standard of energy efficienc
Annual power consumption 14%* lower.

VRT Smart Control (Fully Automatic Energy-saving Refrigerant Control) Softwaer technonogy

Daikin developed VRT smart control by combining air volume control (VAV: Variable Air Volume) for indoor units with conventional VRT control, which optimises compressor speed by calculating the required load for the entire system and optimal target refrigerant temperature based on data sent from each indoor unit. Coordination with the air volume control reduces compressor load and minimises operation loss based on detailed control. VRT smart control ensures energy savings and comfortable air conditioning to meet actual operating conditions.

NEW SCROLL COMPRESSOR

Refrigerant leakage is minimised during low-load operation. Operational loss due to refrigerant leakage is reduced with the inclusion of a proprietary back pressure control mechanism to ensure stable low-load operation.

Simultaneous extension of
height difference and equivalent length

Design flexibility is further improved by simultaneous extension of height difference, improved from 90 m to 110 m, and equivalent length (up to 190 m).

Height difference extension Max. 110 m
For height differences exceeding 50 m with the outdoor unit above the indoor unit and 40 m with the outdoor unit below, the main piping liquid piping size must be increased.
The operating temperature range is up to 49˚C (Outdoor units above indoor units only).
The minimum connection capacity index of the indoor unit shall be 63 or more (Outdoor units above indoor units only).
Equivalent length extension Max. 190 m
When the equivalent piping length from outdoor unit to indoor unit is 90 m or more, be sure to increase the size of the liquid and gas pipes of the main piping.

* In addition to increasing the size of the main pipe, there are other piping restrictions regarding height difference extension and equivalent length. Check the Installation Manual for details.

REFNET header downstream branching supported

Piping branch by REFNET joint is possible downstream of REFNET header.
The indoor unit arrangement can be more flexible.