Specifications
112
2.2.6 Selection chart
Indoor unit
Each indoor unit = System performance
(a) Coefficient of cooling and heating capacity in relation to temperatures
Outdoor unit
System performance =
(1) Correct the cooling and heating capacity in accordance with the conditions as follows.The net cooling and
heating capacity can be,obtained in the following way.
Indoor unit capacity
Indoor unit capacity when operating simultaneously.
Note: Refer to page 112 and 114 for the correction coefficient.
Performance from connected capacity correction coefficient from indoor and out-
door temperature conditions (correction coefficient from piping distance correc-
tion coefficient from mounting height difference between outdoor and indoor units)
(correction coefficient from condensation when heating).
051015-5-10
2220181614
24
18.5
26
10
15
20
25
27
–5
0
20
25
30
35
40
43
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
20 22 24 26
Performance correction coefficient
Cooling
Outdoor dry bulb
temperature (˚CDB)
Heating
Indoor dry bulb
temperature (˚CDB)
Range in which
use is possible
Cooling
Heating
Indoor wet bulb temperature (˚CWB)
Outdoor wet bulb temperature (˚CWB)
ISO-T1 Standard Condition
ISO-T1 Standard Condition
(b) Correction of cooling and heating capacity in relation to one way length of refrigerant piping.
Note (1) Equivalent piping length can be obtained by calculating as follows.
Equivalent piping length = Real gas piping length + Number of bends in gas piping × Equivalent piping length of bends.
Equivalent length of each joint
5
1.0
1.0
10
0.99
1.0
15
0.975
1.0
20
0.965
1.0
25
0.95
1.0
30
0.94
0.995
35
0.925
0.995
40
0.915
0.99
45
0.9
0.99
50
0.89
0.985
Equivalent piping length [m]
Cooling
Heating
(1)
55
0.875
0.985
60
0.865
0.98
65
0.85
0.98
70
0.84
0.975
75
0.825
0.975
80
0.815
0.97
85
0.8
0.97
90
0.79
0.965
95
0.775
0.965
100
0.765
0.96
Equivalent piping length [m]
Cooling
Heating
105
0.745
0.96
110
0.74
0.955
115
0.725
0.955
120
0.715
0.95
125
0.7
0.95
Equivalent piping length [m]
Cooling
Heating
Gas piping size
Joint (90˚elbow)
φ12.7
0.10
φ15.88
0.10
φ19.05
0.15
φ25.4
0.15
φ28.58
0.20
Unit : m/one part