Fujitsu AOU18RLB - 8. COMPRESSOR CONTROL

8. COMPRESSOR CONTROL
1. OPERATION FREQUENCY RANGE
The operation frequency of the compressor is different based on the operation mode as
shown in the Table 10 .
Cooling Heating
Minimum Maximum Minimum Maximum
AOU18RLB
AOU24RLB
12rps
12rps
104rps
12rps
12rps
119rps
104rps
AOU18RLB
AOU24RLB
AOU18RLB
AOU24RLB
( Table 10 : Compressor frequency range )
2. OPERATION FREQUENCY CONTROL AT NORMAL START UP
The compressor frequency soon after the start-up is controlled as shown in the Fig. 11 .
( Fig. 11 : Compressor control at start-up )
Time
Time Time Time
Time
(Frequency)
Frequency
Frequency
Frequency Frequency Frequency
Frequency
Frequency
Frequency
Frequency
Frequency
Time
Time Time Time
Time
(Time)
Frequency
Time
6
Frequency
Time
6
40rps 59rps 72rps 80rps
101rps
110rps
80sec 110sec 140sec
200sec
410sec350sec
3. LIMITATION OF COMPRESSOR FREQUENCY BY OUTDOOR TEMPERATURE
The minimum compressor frequency is limited by outdoor temperature as shown in the Table 11 .
( Table 11 : Limitation of compressor frequency )
AOU24RLB
Under Over Under Over Under Over
24rps 18rps 16rps12rps
32°F (0°C) 50°F (10°C) 104°F (40°C)
[ Cooling/ Dry ]
[ Heating ]
AOU18RLB
AOU18RLB
Under Ove
Under Over
r Under Over Under Over
24rps
24rps
18rps 16rps12rps
32°F (0°C) 50°F (10°C) 104°F (40°C)
Under Over Under Over
18rps 16rps 16rps
45°F (7°C)37°F (3°C) 104°F (40°C)
AOU24RLB
Under Over
24rps
Under Over Under Over
18rps 16rps 16rps
45°F (7°C)37°F (3°C) 104°F (40°C)
[ Cooling/ Dry ]
[ Heating ]
01-08
119rps
Dry
Minimum Maximum
16rps
16rps
30rps
38rps