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2-4. Correction by refrigerant piping length
To obtain a decrease in cooling/heating capacity due to refrigerant piping extension, multiply by the capacity
correction factor based on the refrigerant piping equivalent length in the table below.
1.0
0.9
0.8
0.7
0
20
40
Piping equivalent length (m)
• How to obtain piping equivalent length
Equivalent length = (Actual piping length to the farthest indoor unit) + (0.50 ✕ number of bent on the piping)m
2-5. Operation limit
30
25
20
15
12
10
-15
-10
-5
(Outdoor door temperature :0˚CDB~43˚CDB with
outdoor unit at lower position in cooling mode.)
60
80
100
120
140
0
5
10
15
20
Outdoor temperature (˚CDB)
25
30
35
40
45
6
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