Figure 19 acoa capacity control – AEC ACOA Series Air-Cooled Central Chillers User Manual
Page 39
Figure 19
ACOA Capacity Control
Chiller
model
Comp.
off
Comp. 1
on 33%
Comp. 1
on 50%
Comp. 1
on 66%
Comp. 1
on 100%
Comp. 1
on 50%,
Comp. 2
on 100%
Comp. 1
on 67%,
Comp. 2
on 100%
Comp. 1
and
Comp. 2
on 100%
Comp. 1
on 67%,
Comp. 2 &
Comp. 3
on 100%
Comp. 1,
Comp. 2
& Comp.
3 on
100%
Comp. 1,
Comp. 2,
Comp. 3
& Comp.
4 on
100%
Hot
gas
by-
pass
ACOA15
0
30
100
ACOA20
0
30
100
ACOA25
0
100
ACOA30
0
33
67
100
ACOA35
0
33
67
100
Opt.
ACOA45
0
25
50
75
100
first
ACOA55
0
21
42
78
100
capa-
ACOA70
0
34
50
84
100
city
ACOA80
0
25
50
75
100
step
ACOA90
0
22
33
56
67
89
100
ACOA100
0
22
33
56
67
89
100
ACOA110
0
21
42
71
100
ACOA125
0
25
50
75
100
ACOA135
0
25
50
75
100
Modulates 100% to 30%
Hot gas bypass modulates to approximately half the capacity of the first step.
Page 38
ACOA Series Air-Cooled Central Chillers