20
10-2.Operational frequency range
(3) LEV opening correction by discharge temperature
When LEV correction output is 0 pulse by the suction super heat at cool or dry operation, or dry operating, correct LEV is cor-
rected according to the following table.
The target discharge temperature is determined according to frequency zone and number of operation unit of the
compressor.
Correct the LEV opening according to difference between the target discharge temperature and discharge temperature.
Operation frequency
of compressor
Minimum ~ 20
21 ~ 30
31 ~ 40
41 ~ 55
56 ~ 70
71 ~ 90
91 ~ maximum
Single
51
57
65
67
70
72
74
Double
60
64
68
72
77
83
84
Triple
62
66
73
79
86
90
90
Quadruple
64
68
75
81
88
90
90
Single
55
58
63
70
80
85
85
Double
49
52
55
58
63
69
74
Triple
48
51
54
57
62
68
73
Quadruple
47
50
53
56
61
67
72
Number of operating unit.
Number of operating unit.
COOL, DRY
HEAT
Discharge temperature (
;
)
LEV opening
correction (pulse)
more than Target discharge temp11
Target discharge temp11 to Target discharge temp8
Target discharge temp8 to Target discharge temp5
Target discharge temp5 to Target discharge temp2
Target discharge temp2 to Target discharge temperature-2
Target discharge temperature-2 to Target discharge temperature-5
Target discharge temperature-5 to Target discharge temperature-8
Target discharge temperature-8 to Target discharge temperature-11
Target discharge temperature-11 or less
COOL
10
4
2
1
0
-1
-2
-5
-8
HEAT
7
6
3
2
0
-1
-1
-3
-7
Min.
Max. Rated
Min.
Max. Rated
Note: When the fan speed of indoor unit is totally
Lo notch, restrict the maximum frequency is
restricted in 6/7 of the rated frequency.
DRY COOL
COOL
DRY
HEAT
Number of
operating
unit
1
2
3
4
2
3
4
5
6
7
8
3
4
5
6
7
8
9
18
20
30
40
52
68
85
80
105
110
115
32
40
46
73
70
80
90
71
18
22
26
62
70
80
86
95
105
115
120
36
49
65
80
80
88
100
102
1
2
3
25
40
58
1
2
1
1
2
3
1
2
2
3
1
1
8/10 of maximum frequency
9/10 of maximum frequency
7/10 of maximum frequency
Maximum frequency
capacity
cord
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