Mitsubishi Electric PUMY-P112VKM3 Technical & Service Manual page 24

4-5. CORRECTING CAPACITY FOR CHANGES IN THE LENGTH OF REFRIGERANT PIPING
(1) 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 to 13. Then multiply
by the cooling capacity from Figure 7 and 8 in "4-2. CORRECTION BY TEMPERATURE" to obtain the actual capacity.
(2) During heating, find the equivalent piping length, and find the capacity ratio corresponding to standard piping length from
Figure 14. 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-P112VKM3(-BS)
1.00
0.95
0.90
0.85
0.80
0.75
0.70
0.65
0.60
0.55
0.50
0 20
Figure 12 PUMY-P125VKM3(-BS)
1.00
0.95
0.90
0.85
0.80
0.75
0.70
0.65
0.60
0.55
0.50
0 20
OCH632A
PUMY-P112YKM(E)3(-BS) <Cooling>
40 60 80
Piping equivalent length (m)
PUMY-P125YKM(E)3(-BS) <Cooling>
40 60 80
Piping equivalent length (m)
100 120 140
100 120
24
Total capacity of indoor unit
6.3
9.4
12.5
16.2
160 180
Total capacity of indoor unit
140 160 180
7.0
10.5
14.0
18.2