Specifications

755
FDC-HKX
18.2.6 Selection chart
(1) Indoor unit capacity(1) Indoor unit capacity
Net capacity = Capacity shown on specification ⳯ Correction factors as follows.
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.
(a) Coefficient of cooling and heating capacity in relation to temperatures
Cooling
Heating
0 5 10 15-5-10-15
2220181614
24
26
20
25
30
35
40
43
0.6
0.7
0.8
0.9
1.0
1.2
1.1
1.3
Outdoor air W.B. temperature °C W.B.
10
15
20
25
27
Applicablerange
0
-5
Indoor air W.B. temperature °C W.B.
JIS Standard Condition
JIS Standard Condition
Coefficient of cooling & Heating capacity in relation to temperature
Heating operation
Indoor air D.B.
temperature
°CD. B.
Cooling operation
Outdoor air D.B.
temperature
°CD. B.
(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