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Single CAC
Outdoor Unit
7. Capacity Coefficient Factor
7.1 Rate of change in capacity due to the main piping length
1 Phase Inverter
Rate of change in cooling capacity
Piping length(m)
2.5/3.5 kW
5.0 kW
Rate of change in
capacity(%)
7.1/8.0/10.0 kW
12.5/14.0/15.0 kW
Rate of change in heating capacity
Piping length(m)
2.5/3.5 kW
5.0 kW
Rate of change in
capacity(%)
7.1/8.0/10.0 kW
12.5/14.0/15.0 kW
3 Phase Inverter
Rate of change in cooling capacity
Piping length(m)
10.0 kW
Rate of change in
12.5/14.0/15.0 kW
capacity(%)
19.0/23.0 kW
Rate of change in heating capacity
Piping length(m)
10.0 kW
Rate of change in
12.5/14.0/15.0 kW
capacity(%)
19.0/23.0 kW
7.2 Calculation of actual system capacity
1. Outdoor unit standard maximum capacity
Q
[from specification table]
max.
2. Outdoor unit capacity at Ti, To temperature.
Q
[from capacity table]
(Ti, To)
3. Outdoor unit capacity coefficient factor
F
= Q
/ Q
(Ti, To)
(Ti, To)
(max.)
4. Piping correction factor
F
for piping length [from capacity coefficient factor table]
piping
5. Indoor Unit actual capacity
Q
= Q
x F
actual
max
(Ti, To)
5
10
15
100
99.8
99.3
100
99.8
99.3
100
99.3
97.9
100
99.3
97.9
5
10
15
100
99.8
99.4
100
99.8
99.4
100
99.7
99.2
100
99.7
99.2
5
10
15
100
99.3
97.9
100
99.3
97.9
5
10
15
100
99.7
99.2
100
99.7
99.2
x F
piping
20
30
40
50
98.8
-
-
98.8
97.8
-
96.6
93.8
91.1
88.4
96.6
93.8
91.1
88.4
20
30
40
50
99.0
-
-
99.0
98.3
-
98.7
97.7
96.6
95.6
98.7
97.7
96.6
95.6
20
30
40
50
96.6
93.8
91.1
88.4
96.6
93.8
91.1
88.4
20
30
40
50
98.7
97.7
96.6
95.6
98.7
97.7
96.6
95.6
Standard Inverter
60
70
75
-
-
-
-
-
-
-
-
-
-
-
85.6
82.9
81.5
60
70
75
-
-
-
-
-
-
-
-
-
-
-
94.6
93.5
93
60
70
75
-
-
-
85.6
82.9
81.5
60
70
75
-
-
-
94.6
93.5
93.0
89
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