Specifications
87
Quiet operation
Environmental friendly
High reliability
If one compressor
malfunctions...
Emergency operation occurs. Emergency operation occurs.
If one outdoor unit
malfunctions...
Can be easily started
by remote control of
the indoor unit.
Note: • This function is available in setting at site.
• The relationship of outdoor temperature (load) and time shown in the
graph is just an example.
Peak in the outdoor temperature
Peak in the outdoor temperature Peak in the outdoor temperature
<Mode 1. Automatic mode>
Capability %
8 hrs 9 hrs
Operation sound dB
50
8:00 12:00 16:00 20:00 0:00 4:00 8:00
50
100
58
0
Load %
Night mode ends
Night mode endsNight mode ends
Night mode starts
Night mode startsNight mode starts
max.
-8 dB
(10 HP)
Night Mode
-20
-10
0
10
20
30
40
50
43˚C DB
Cooling
-5°C DB
15.5˚C WB 15.5
˚C WB
Cooling &
Heating Heating
-5˚C WB
-20
-10
0
10
20
30
40
50
15.5˚C WB
Heating
43˚C DB
Cooling
-5˚C DB
-20˚C WB -20 ˚C WB
Uses HFC R410A with zero ozone depletion potential
Reduced refrigerant volume
VRV II uses less refrigerant than VRV and hence has less environmental impact.
Lead free PC boards
VRV II uses PC boards with no lead, making it even friendlier to earth.
Easily recycled casing
Galbarium, a material that requires no coating, is used for the bottom plate for easy recycling.
Duty cycling of compressor
The VRV II employs a system that balances the usage of each compressor in order to prolong itself and their
stability. This duty cycling function covers a maximum of nine compressors. It switches starting sequence of
multiple outdoor units.
Extended operating range
By employing a high-pressure dome-type compressor, the operating range in heating has been extended
from -15°C to -20°C.
Nighttime quiet operation function
2 modes*
1
with low operating sound level at night.
Set on the outdoor PCB. Time of maximum
temperature is memorized. The low
operating mode will become active 8 hours*
2
after the peak temperature in the daytime,
and operation will return to normal 9 hours*
3
after that.
Automatic mode
Mode 1.
Starting time and ending time can be input.
(External control adaptor for outdoor unit,
DTA104A61 or DTA104A62, and a
subsequently obtained timer are necessary.)
Customized mode
Mode 2.
Double backup operation in compressors and units
If one of the three compressors in an outdoor unit malfunctions, one of the other compressors takes over
emergency operation. Furthermore, if one outdoor unit malfunctions in a system of more than 18 HP, other
outdoor units provide emergency operation until repair is effected.
*1. Determine which mode to select depending on the
climatic characteristics of each country.
*2. Initial setting. Can be selected from 6, 8 and 10 hours.
*3. Initial setting. Can be selected from 8, 9 and 10 hours.
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