Sanyo SPW-CR1503GDYH8 Technical Data & Service Manual page 33

1. Model Selecting and Capacity Calculation
1-7. Capacity correction graph according to refrigerant tubing length and elevation
difference (For R22)
Cooling capacity coefficient
50
40
34
30
20
100
10
%
0
-10
-20
-30
Heating capacity coefficient
50
40
34
30
20
100
10
%
0
-10
-20
-30
NOTE
1) Plus side of the elevation difference is when the outdoor unit is higher than the indoor unit.
2) Minus side of the elevation difference is when the outdoor unit is lower than the indoor unit.
3) The value of gas tube is used as equivalent length.
4) The capacity of each indoor unit is calculated by multiplying it with the capacity coefficient, as obtained from the total
equivalent lengths of main tubes and distribution branches which are directly connected to the indoor units.
5) Equivalent length conversion is not necessary for the optional distribution joint.
6) Total equivalent length is calculated by adding the straight equivalent length of joints to the actual length.
7) Model selection is done from the value calculated for total cooling and total heating.
Elevation
System example
difference
Indoor unit 25: a
Indoor unit 12: b
Indoor unit 9: c
Indoor unit 18: d
Indoor unit 36: e
86 84 82 80 78
88
90
92
94
96
98
10 20 30 40 50 60
a b
Total equivalent tubing length (m)
94 93
95
96
97
98
99
10 20 30 40 50 60
a
Total equivalent tubing length (m)
Total equivalent
tubing length
30 m 54.2 m
30 m 60.8 m
30 m 70.9 m
34 m 61.8 m
34 m 65.8 m
II - 11
Design of W-ECO MULTI SYSTEM
76 74 72 70 68 66
70 80 90 100 110 120 125
d e c
92 91 90 89 88 87
70 80 90 100 110 120 125
b d e c
Cooling capacity
coefficient
85.7 %
83.8 %
80.9 %
83.2 %
82.1 %
726_8132
86 85
607_8132
Heating capacity
coefficient
93.9 %
93.0 %
91.8 %
92.9 %
92.4 %
TD831077
2