Panasonic U-72MF2U9 Technical Data Manual page 15

2. Features of 3WAY VRF SYSTEM
2. Features of 3WAY VRF SYSTEM
Capacity control
The compressor combination (DC inverter compressor + DC inverter compressor) allows smooth capacity control from
0.6-Ton to 30-Ton.
Realization of smooth capacity control
from 0.6-Ton to 30-Ton
Capacity control is possible smoothly with a DC inverter compressor.
The following graph shows the image of the operating combination of compressors in case of 30-Ton system.
In actual operation, the combination will be changed according to the operating condition, operating time amount and priority of
compressor, etc.
Compressor HP
1
compressor
DC
compressor
DC
*30-Ton = U-120MF2U9 Type × 3
2
Capacity
(Ton)
3
30
25
4
20
15
5
10
5
6
0
0. 0
7
8
9
Unit1(main) Unit2(sub1)
6.3 6.3
6.3 6.3
In case of 30-Ton system
DC4
DC3 DC3
DC2 DC2 DC2
DC1 DC1 DC1 DC1
1 0. 0
Example of 3 unit connection
Unit3(sub2)
6.3
6.3
DC5
DC4
DC3
DC2
DC1
2 0. 0
1 - 6 1 - 7
Outline of 3WAY VRF SYSTEM
Outline of 3WAY VRF SYSTEM
DC6
DC5
DC4
DC3
DC2
DC1
3 0.0
LOAD
1
2
3
4
5
6
7
8
9