Technical Data Manual

Design of Mini VRF SYSTEM
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1. Model Selecting and Capacity Calculator
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Graph of indoor unit capacity characteristics (2 – (1))
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Graph of capacity change characteristics resulting from tubing length and elevation difference (1
•
2 – (2))
Rate of cooling capacity change (%)
Indoor unit cooling capacity characteristics Indoor unit heating capacity characteristics
indicates the rating point. indicates the rating point.
Indoor air intake temp. (˚F WB)
Rate of heating capacity change (%)
Indoor air intake temp. (˚F DB)
120
110
100
90
80
110
105
100
95
90
57 59 60 62 64 66 68 69 71 73 75 77 59 60 62 64 66 68 69 71 73 75 77 78
80
100
%
98
96
94
92 90 88 86 84 82 80 78 76
0 33 66 98 131 164 197 230 262 295 328 361 394 427 459 492
<Cooling>
Base capacity
change rate (%)
Elevation difference (ft)
Equivalent length (ft)
164
131
98
66
33
0
-33
-66
-98
-131
97 96 95 94 93 92 91
0 33 66 98 131 164 197 230 262 295 328 361 394 427 459 492
<Heating>
Base capacity
change rate (%)
Elevation difference (ft)
Equivalent length (ft)
164
131
98
66
33
0
-33
-66
-98
-131
98
99
100
%
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.
TD831156-00_MINI_VRF_SYS.indb 8TD831156-00_MINI_VRF_SYS.indb 8 2012/01/31 14:38:432012/01/31 14:38:43