(2) Compressor switching method(The method of constant speed compressor turn-on during Inverter
compressor operation)
After inverter compressor frequency is decreased to 40Hz, CSC turn on.
Inverter compressor frequency is increased to corresponding step
(1) Compressor operation method
- Capacity control operation with the combination of Inverter compressor and
constant speed compressor
- It is not allowed to operate constant speed compressor only.
- In over capacity range, rising of frequency is restrained because of the heat exchanger capacity limit.
Capacity
Inverter
comp.:
30Hz
Inverter
comp.:
50Hz
Inverter
comp.:
120Hz
Inverter
comp.:
120Hz
Compressor Control
■
Capacity of compressor
CSC
ON
Inverte Comp. ON
+ Constant Speed Comp. OFF
Inverte Comp. ON
+ Constant Speed Comp. ON
(3) Compressor Operation Step
Step
Inverter Comp.
Frequency
Inverter Comp.
Frequency
Inverter Comp.
Frequency
Step Step
0 0 off 16 60 off 32 50 on
1 30 off 17 62 off 33 55 on
2 32 off 18 64 off 34 60 on
3 34 off 19 66 off 35 65 on
4 36 off 20 68 off 36 70 on
5 38 off 21 70 off 37 75 on
6 40 off 22 75 off 38 80 on
7 42 off 23 80 off 39 85 on
8 44 off 24 85 off 40 90 on
9 46 off 25 90 off 41 95 on
10 48 off 26 95 off 42 100 on
11 50 off 27 100 off 43 105 on
12 52 off 28 105 off 44 110 on
13 54 off 29 110 off 45 115 on
14 56 off 30 115 off 46 120 on
15 58 off 31 120 off
Constant
Speed Comp.
Constant
Speed Comp.
Constant
Speed Comp.
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