19
TCH091
4-4. CORRECTING CAPACITY FOR CHANGES IN THE LENGTH OF REFRIGERANT PIPING
• During cooling, obtain the ratio (and the equivalent piping length) of the outdoor units rated capacity and the total in-use
indoor capacity, and find the capacity ratio corresponding to the standard piping length from Figure 11. Then multiply by
the cooling capacity from Figure 7 and 8 in "4-2. CORRECTION BY TEMPERATURE" to obtain the actual capacity.
• During heating, find the equivalent piping length, and find the capacity ratio corresponding to standard piping length from
Figure 12. Then multiply by the heating capacity from Figure 9 and 10 in "4-2. CORRECTION BY TEMPERATURE" to
obtain the actual capacity.
(1) Capacity Correction Curve
Figure 11 PUMY-P250YBM2 <Cooling>
Figure 12 PUMY-P250YBM2
<Heating>
Capacity ratio
21.0
14.0
28.0
36.4
Piping equivalent length (m)
Total capacity of indoor unit
Capacity ratio
Piping equivalent length (m)
0
20
40
60
80
100
120
140
160
180
0.65
0.70
0.75
0.80
0.85
0.90
0.95
1.00
0
20
40
60
80
100
120
140
160
180
0.65
0.70
0.75
0.80
0.85
0.90
0.95
1.00
Summary of Contents for PUMY-P250YBM2-BS
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