Sanyo DHX4852 - Manual (Page 22)

2-12
Design of W-2WAY ECO-i SYSTEM Unit Specifications
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Refer to the graph below for the correction coefficients for Ruc and Ruh.
Indoor unit capacity correction coefficient for Ruc (cooling)
Indoor unit capacity correction coefficient for Ruh (heating)
1.0
0.9
0.8
0.7
0.6
0.5
0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0
Indoor unit capacity correction coef
ficient
Corrected indoor/outdoor capacity ratio (Ruc or Ruh)
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 Outdoor unit heating capacity
characteristics
Rate of cooling capacity change (%) Rate of heating capacity change (%)
* Broken line indicates a 16 HP
DC inverter unit
Outdoor air intake temp. ( ° F DB)
WB = 66 ° F
Indoor air intake temp. ( ° F DB)
59
68
77
130
120
110
100
90
80
70
60
50
40
130
120
110
100
90
80
-4 5 14 23 32 41 50 59 23 32 41 50 14 59 68 77 86 95 104 113
Outdoor air intake temp. ( ° F WB)
Indoor air intake temp. (WB) = 60 ° F
WB = 71 ° F
Outdoor unit heating capacity correction coefficient during frosting/defrosting (1 – (4))
Outdoor intake air
temp.
(°FWB RH85%)
– 4 5 14 17 21 23 24 28 30 32 33 35 37 39 41 42
Correction coefficient 0.97 0.97 0.97 0.96 0.94 0.91 0.89 0.87 0.87 0.87 0.88 0.89 0.91 0.92 0.95 1.0
* To calculate the heating capacity with consideration for frosting/defrosting operation, multiply the heating capacity found
from the capacity graph by the correction coefficient from the table above.
1. Model Selecting and Capacity Calculator
TD831138-02_W-2WAY.indb 12 2007/07/26 14:30:31