Sanyo SPW-C0705DXHN8 - Page 25

2-15
Design of W-2WAY ECO-i SYSTEM Unit Specifications
1
2
3
4
5
6
7
8
<Cooling>
Elevation difference (m)
Base capacity
change rate
*1
92 90 88 86 84 82 80 78 76
94
96
98
100
%
0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150
50
40
30
20
10
0
–10
–20
–30
–40
Equivalent length (m)
*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.)
L
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% Capacity change rate is 92.0%.
56.0kW
×
92.0% = 51.5kW Cooling capacity is 51.5 kW.
L 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 Heating capacity is 61.2kW
Equivalent length (m)
<Heating>
Base capacity
change rate
1-9. Capacity Correction Graph According to Tubing Length and Elevation Difference
Capacity change characteristics
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.
NOTE
1. Model Selecting and Capacity Calculator
Rated performance values
Item Cooling Heating
Type
Cooling
capacity (kW)
Power
consumption (kW)
Heating
capacity (kW)
Power
consumption (kW)
70 22.4 5.99 25.0 6.17
90 28.0 7.90 31.5 7.15
115 33.5 9.58 37.5 9.60
130 40.0 11.6 45.0 11.5
140 45.0 13.3 50.0 13.2