24
OCH668G
4-5. 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 12 to 14. Then multiply
by the cooling capacity from Figure 7 to 9 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 15. Then multiply by the heating capacity from Figure 10 and 11 in "4-2. CORRECTION BY TEMPERATURE" to
obtain the actual capacity.
(1) Capacity Correction Curve
0
20
40
60
80
0.50
0.55
0.60
0.65
0.70
0.75
0.80
0.85
0.90
0.95
1.00
9.4
6.3
12.5
16.3
Capacity ratio
Piping equivalent length (m)
Total capacity of indoor unit
0
20
40
60
80
0.50
0.55
0.60
0.65
0.70
0.75
0.80
0.85
0.90
0.95
1.00
10.5
7.0
14.0
18.2
Capacity ratio
Piping equivalent length (m)
Total capacity of indoor unit
Figure 12 <Cooling>
PUMY-SP112VKM(-BS) PUMY-SP112VKM-ET(-BS) PUMY-SP112VKM-ER(-BS)
PUMY-SP112YKM(-BS) PUMY-SP112YKM-ET(-BS) PUMY-SP112YKM-ER(-BS)
Figure 13 <Cooling>
PUMY-SP125VKM(-BS) PUMY-SP125VKM-ET(-BS) PUMY-SP125VKM-ER(-BS)
PUMY-SP125YKM(-BS) PUMY-SP125YKM-ET(-BS) PUMY-SP125YKM-ER(-BS)
