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Control Specification
SiUS121736EA
103
Functions and Control
4.12 Low Hz High Pressure Limit
Outline
The system controls the upper limit of the frequency to prevent abnormal high pressure while the
frequency is low. Control is carried out according to three zones.
Details
18 class
24/36 class
A
(minutes)
33
26
B
(°C)
4 ~ 12
4 ~ 12
C
(°F)
39.2 ~ 53.6
39.2 ~ 53.6
D
(Hz)
58
58
E
(Hz)
74
42
F
(seconds)
60
90
G
(seconds)
120
60
H
(seconds)
650
590
J
(seconds)
80
40
K
(pulse)
320
400
L
(pulse)
300
250
M
(pulse)
300
300
N
(pulse)
320
400
P
(pulse)
160
50
Q
(pulse)
160
0
18
class
24/36
class
A
60°C (140°F)
38.5°C (101.3°F)
B
59°C (138.2°F)
37.5°C (99.5°F)
C
56°C (132.8°F)
34.5°C (94.1°F)
A
B
C
Highest indoor
heat exchanger
temperature
among
operating rooms
Reset zone
Dropping zone
Keep
zone
(R14587)