Sanyo SPW-C1155DXHN8 Technical Data & Service Manual page 25

1. Model Selecting and Capacity Calculator
Rated performance values
Item
Type
70
90
115
130
140
1-9. Capacity Correction Graph According to Tubing Length and Elevation Difference
Capacity change characteristics
<Cooling>
Base capacity
change rate
92 90
50
40
94
30
96
20 98
100
10
%
0
–10
–20
–30
–40
0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150
Equivalent length (m)
<Heating>
Base capacity
change rate
NOTE
The positive side for the elevation difference indicates that
the outdoor unit is installed at a higher position than the
indoor units. The negative side indicates the opposite.
Cooling
Cooling Power
capacity (kW) consumption (kW)
22.4 5.99
28.0 7.90
33.5 9.58
40.0 11.6
45.0 13.3
88 86 84 82 80 78
*1
Equivalent length (m)
Design of W-2WAY ECO-i SYSTEM Unit Specifications
Heating
Heating Power
capacity (kW) consumption (kW)
25.0 6.17
31.5 7.15
37.5 9.60
45.0 11.5
50.0 13.2
76
*1 Sample calculations
(System: 20 HP, 50 m equivalent length, 15 m elevation
difference
The cooling capacity and heating capacity for this system are
found as shown below.)
Cooling operation
From the table, the correction coefficient for that horsepower
level is found to be 1.00.
From the graph, the base capacity change rate is found to be
92.0%.
92.0% 1.00 = 92.0%
×
56.0kW 92.0% = 51.5kW
×
Heating operation
From the table, the correction coefficient for that horsepower
level is found to be 1.00.
From the graph, the base capacity change rate is found to be
97.2%.
97.2% 1.00 = 97.2%
×
Because the calculation result exceeds 97.2%, the capacity
change rate is 97.2%.
63.0kW × 97.2% = 61.2kW
2-15
Capacity change rate is 92.0%.
Cooling capacity is 51.5 kW.
Heating capacity is 61.2kW
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