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IV. Outdoor unit
1. Unit selection (with cooling load)
IV
2
1-1. Indoor unit selection
Select the nearest load capacity indoor unit with given load after finding indoor and outdoor temperature
using indoor unit capacity table. (The indoor unit capacity should larger than given load.)
1-2. Outdoor unit selection
The allowable combination is described on the indoor unit combination total capacity index table.
For the standard of indoor unit and outdoor unit combination, select the nearest value that the total indoor unit
capacity index is less than a 100% outdoor unit combination capacity index.
1-3. Real function data
(1) Select the exact table according to outdoor unit model and combination rate
using outdoor unit capacity table. According to given indoor and outdoor
temperature, find outdoor unit capacity and power input using the table.
Each indoor unit capacity (power input) is calculated as follow.
IUC=AUC x INX/TNX
IUC: Each indoor unit capacity (power input)
OUC: Outdoor unit capacity (power input)
INX: Each indoor unit capacity index
TNX: Total capacity index
(2) According to pipe length, change the indoor unit capacity.
If the changed capacity is smaller than load, change it to larger capacity
indoor unit and repeat the selecting progress.
◆
The described capacity may be different to each indoor unit according to combination. So, the real
capacity should be calculated with outdoor unit capacity table.
■
Indoor unit combination total capacity index
outdoor unit
indoor unit combination rate
100%
160
280
280(ISO)
90%
144
252
252
80%
128
224
224
70%
112
196
196
60%
96
168
168
50%
80
140
140
RVMH060GBM0
RVMH100GBM0
RVMH100FAM0
■
Indoor unit capacity index
- 50Hz
Unit size
capacity index
020
20.0
026
26.0
035
35.0
052
52.0
070
70.0
105
105.0
128
128.0
- 60Hz
Unit size
capacity index
020
20.0
032
32.0
040
40.0
052
52.0
072
72.0
083
83.0
105
105.0
128
128.0
DVM E-D/B(chapter4-1)-E<03759 3/21/02 7:39 PM Page 2