-
161
-
'14 • KX-SM-202
■
Refrigerant charge quantity calculation notes in case outdoor unit capacity is 475,500 and 560
※
.
※
The combination unit is not applicable
●
In case when the outdoor unit capacity is 475~560 and the pipe length (X,Y) is in the following conditions,
please calculate the reduction refrigerant quantity (E).
・
X
＜
20m
and
Y
＜
10m.
（
X
：
The length from the outdoor unit to the furthest indoor unit.
Y
：
Main pipe length.
）
①
kg
＋ ②
kg
－ ③
kg =
①
+
②
-
③
kg
●
The calculation of Reduction refrigerant quantity (E)
・
If total indoor units capacity is less than outdoor unit capacity, reduction refrigerant quantity (E) is 2kg.
Outdoor unit capacity
＞
Total indoor units capacity
・・・・・・
・
If total indoor units capacity is same or larger than outdoor unit capacity, reduction refrigerant quantity (E) is the connecting number
of indoor units of refrigerant reduction ×0.5 (kg).
Outdoor unit capacity
≦
Total indoor units capacity
・・・・・・
・
Indoor units list of the refrigerant reduction
＜
Example
＞
X
＝
19m
（＜
20m
）
Y
＝
9m
（＜
10m
）
Outdoor unit capacity
＝
560
Total indoor units capacity
＝
643
（＝
FDT90
＋
FDT140
＋
FDUM140
＋
FDT71
＋
FDU112
＋
FDUM90
）
The number of indoor units of the refrigerant reduction
＝
3 units (FDT140,FDUM140,FDUM90 : 3 units)
Outdoor unit capacity:560
≦
Total indoor units capacity:64
PCB011H021
※
Please calculate the additional refrigerant charge quantity
（
D)
according to the formula on the installation sheet
Total additional
refrigerant
quantity (D)
※
Factory charge
475,500,560
：
11.5kg
Reduction refrigerant
quantity (E)
Total refrigerant quantity
in the system
(Total charge)
（②－③：
Additional charge in this case
）
(
E)=2kg
(E)=Connecting number of indoor units of refrigerant reduction
×
0.5
(kg)
（
E)=3×0.5
＝
1.5(kg)
FDT140
，
FDTW140
，
FDU140
，
FDUM140
，
FDT160
，
FDU160
，
FDUM160
，
FDU90
3
