Figure 13 PUMY-P300YBM
1.00
0.95
0.90
0.85
0.80
0.75
0.70
0.65
0
Figure 14 PUMY-P300YBM
1.00
0.95
0.90
0.85
0.80
0.75
0.70
0.65
0
(2) Method for Obtaining the Equivalent Piping Length
Equivalent length = (length of piping to farthest indoor unit) + (0.3 o number of bends in the piping) (m)
4-4-1. Correction of Heating Capacity for Frost and Defrosting
If heating capacity has been reduced due to frost formation or defrosting, multiply the capacity by the appropriate correction
factor from the following table to obtain the actual heating capacity.
Correction factor diagram
Outdoor Intake temperature (°C W.B.)
Correction factor
OCH760
<Cooling>
20
40
60
Piping equivalent length (m)
<Heating>
20
40
60
Piping equivalent length (m)
6
4
2
1.00
0.98
0.89
Total capacity of indoor unit
80
100
120
80
100
120
0
−2
−4
0.88
0.89
0.90
0.95
20
140
160
180
140
160
180
−6
−8
−10
−15
0.95
0.95
0.95
16.75
25.13
33.5
43.5
−20
0.95