Description

Greater energy savings during low-load operation. High COP Performance
The key to innovative energy savings is to increase ef¬ciency 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 ef ciency during low-load operation.
Utilising these technologies, Daikin’s new VRV A series raises the standard of energy ef cienc.
Annual power consumption 20%* 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.

Automatic refrigerant charge function
Contribute to optimised operation efficiency, higher quality and easier installation
Optimised operation efficiency
The automatic refrigerant charge function automatically determines the optimal amount of refrigerant to be charged. This function prevents a capacity shortage or energy loss due to excessive or insufficient refrigerant.

Advanced oil temperature control
Standby power consumption is reduced.
The advanced oil temperature control reduces standby power consumption by up to 65.4%* annually compared to conventional models. Standby power needed for preheating refrigerator oil, which consumed substantial standby power, was reduced to save energy when the air conditioner is stopped.

Long Piping Length
For connection of only VRV indoor units
Max. total piping length max 1000m
Max. equivalent piping length max 195 m (Actual piping length 165m)
Between the first indoor branch and the farthest indoor unit max 90m*1
Max. level difference between the outdoor units and the indoor units 90m*2
Max. level difference between the indoor units 30m

High reliability – New inverter PC board
The control functions of inverter technology have been integrated on printed circuit boards. As well as improving reliability, this has reduced the number of parts and enabled downsizing.
New waveform control improves tolerance of variations in power supply voltage. Even if the power supply has irregularities, rises in current are suppressed and operation continues.
Durability of the inverter printed circuit board improved by changing the electrolytic capacitors for the compressor to film capacitors.

Double backup operation functions
Daikin VRV X series outdoor unit boasts double backup operation functions, which can secure the use of air conditioners in this area to the greatest extent by emergently enabling double backup operation functions even if failure occurs in a set of air conditioning equipment.
In the event of a failure, emergency operation can be conveniently enabled to allow the remaining system to operate in a limited fashion.