Panasonic U-72MF1U9 Technical Data Manual page 27

1. Model Selecting and Capacity Calculator
Refer to the graph below for the correction coeffi cients for Ruc and Ruh.
1.0
0.9
0.8
0.7
0.6
0.5
0.4 0.5
NOTE
When Ruc or Ruh is less than or equal to 1.0, the indoor unit capacity correction coefficient for both Ruc and Ruh is 1.0.
5. Graph of capacity correction coefficients
Graph of outdoor unit capacity characteristics (1 – (2))
Outdoor unit cooling capacity characteristics
120
110
100
90
80
23 32 41 50
Outdoor air intake temp. (°F DB)
Outdoor unit heating capacity correction coeffi cient during frosting/defrosting (1 – (4))
Outdoor intake air
– 4
temp. (°FWB RH85%)
Correction coefficient 0.97
* To calculate the heating capacity with consideration for frosting/defrosting operation, multiply the heating capacity found
from the capacity graph by the correction coeffi cient from the table above.
Indoor unit capacity correction coefficient for Ruc (cooling)
Indoor unit capacity correction coefficient for Ruh (heating)
0.6 0.7 0.8 0.9 1.0 1.1 1.2
Corrected indoor/outdoor capacity ratio (Ruc or Ruh)
59 68 77 86 95 104 113
5 14 17 21 23
0.97 0.97 0.96 0.94 0.91
1.3 1.4 1.5 1.6 1.7
Outdoor unit heating capacity characteristics
120
110
100
90
80
70
60
50
40
-4 5 14
Outdoor air intake temp. (°F WB)
24 28 30 32
0.89 0.87 0.87 0.87 0.88
2 - 13
Design of 3WAY VRF SYSTEM
1.8 1.9 2.0
23 32 41 50
33 35 37 39 41
0.89 0.91 0.92 0.95
1
2
3
4
59
5
42
6
1.0
7
8