Sanyo SPW-C1155DXHN8 Technical Data & Service Manual page 10

2. Features of W-2WAY ECO-i SYSTEM
Capacity control
The compressor combination (DC inverter compressor + constant-speed compressor) allows smooth capacity control from 0.8
HP to 48 HP.
Realization of smooth capacity control
from 0.8HP to 48HP
Capacity control is possible smoothly with a DC
inverter compressor. The right graph shows the
image of the operating combination of compres-
sors in case of 48HP system. In actual operation,
the combination will be changed by operating
condition, operating time amount, priority of com-
pressor and so on.
Comp. HP Unit1(main) Unit2(sub1) Unit3(sub2)
DC comp. 4.0
AC1 comp. 6.0
AC2 comp. 6.0
1
*48HP = SPW-140 Type x 3
Unit 1
2
3
4
5
6
7
8
4.0 4.0
6.0 6.0
6.0 6.0
Unit 2 Unit 3
Capacity
48
42
36
30
24
18
12
8
DC1
4
DC1
DC2
DC1
DC2
DC2
DC3 DC3
DC3
1-6
Outline of W-2Way ECO-i SYSTEM
In case of 48 HP system
DC1
DC1
DC2
DC1
DC2
DC3
DC1
DC2
DC3 AC11
DC2
DC3 AC11 AC21
DC3 AC11 AC21 AC31
AC11 AC21 AC31 AC12
Example of 3 unit connection
DC1
DC1
DC2
DC2
DC3
DC3 AC11
AC11 AC21
AC21 AC31
AC31 AC12
AC12 AC22
AC22 AC32
LOAD --->