Daikin FXL63LVE [38/56] 3 selection procedure system based on cooling load

Daikin FXL63LVE [38/56] 3 selection procedure system based on cooling load
6
Systems • Introduction
37
• Introduction
6 Selection procedure
6-3 Selection procedure System based on cooling load
6-3-1 Indoor unit selection
Enter indoor unit capacity tables at given indoor and outdoor temperature.
Select the unit that the capacity is the nearest to and higher than the given load.
NOTE
1Individual indoor unit capacity is subject to change by the combination. Actual capacity has to be calculated according to the combination by using
outdoor units capacity table.
6-3-2 Outdoor unit selection
Allowable combinations are indicated in indoor unit combination total capacity index table.
In general, oudoor units can be selected as follows though the location of the unit, zoning and usage of the rooms should be considered.
The indoor and outdoor unit combination is determined that the sum of indoor unit capacity index is nearest to and smaller than the capacity index at
100 % combination ratio of each outdoor unit. Up to 32 indoor units can be connected to one outdoor system. It is recommended to choose a larger
outdoor unit if the installation space is large enough.
If the combination ratio is higher than 100 %, the indoor unit selection will have to be reviewed by using actual capacity of each indoor unit.
Indoor unit combination total capacity index table
Indoor unit capacity index
6-3-3 Actual performance data
Use outdoor unit capacity tables
Determine the correct table according to the outdoor unit model and combination ratio.
Enter the table at given indoor and outdoor temperature and find the outdoor capacity and power input. The individual indoor unit capacity (power
input) can be calculated as follows :
ICA =
OCA x INX
TNX
ICA : Individual indoor unit capacity (power input)
OCA : Outdoor unit capacity (power input)
INX : Individual indoor unit capacity index
TNX : Total capacity index
Then, correct the indoor unit capacity according to the piping length.
If the corrected capacity is smaller than the load, the size of indoor unit has to be increased. Repeat the same selection procedure.
Outdoor unit
Indoor unit combination ratio
130 % 120 % 110 % 100 % 90 % 80 % 70% 60 % 50 %
RSXYP/RSEYP16K 520 480 440 400 360 320 280 240 200
RSXYP/RSEYP18K 585 540 495 450 405 360 315 270 225
RSXYP/RSEYP20K 650 600 550 500 450 400 350 300 250
RSXYP/RSEYP24K 780 720 660 600 540 480 420 360 300
RSXYP/RSEYP26K 845 780 715 650 585 520 455 390 325
RSXYP/RSEYP28K 910 840 770 700 630 560 490 420 350
RSXYP/RSEYP30K 975 900 825 750 675 600 525 450 375
Model 20 25 32 40 50 63 71 80 100 125 200 250
Capacity index 20 25 31.25 40 50 62.5 71 80 100 125 200 250

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