LG Multi V mini ARUV Series, Руководство по установке

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26 Outdoor Unit
Refrigerant Piping
1. Normal condition
The calculation of the additional charge should take into account the length of pipe.
Additional charge (kg)
Product Charge(kg)
=
x
+
+ =
Total liquid pipe (m)
Additional refrigerant charge
amount per liquid pipe 1m
(Table 1)
Total amount(kg)
Correction Factor (kg)
(Table 2)
A
A B
B
0.354 0.266 0.173 0.118 0.061 0.022
Additiona
refrigerantl
amount (kg/m)
Ø22.2 Ø19.05 Ø15.88 Ø12.7 Ø9.52 Ø6.35
Pipe diameter at
liquid side (mm)
Table 1
4
3.7
-0.5
5
3.7
0
6
3.7
0
HP
PRODUCT CHARGE
CF
Table 2
Example : 5 HP
Additional charge amount R (kg)
= (Lx x 0.022kg/m) + (Ly x 0.061kg/m) + Correction factor
= (12 x 0.022kg/m) + (28 x 0.061kg/m) + 0
= 1.972
Lx : Real total length of liquid pipe Ø6.35(m)
Ly : Real total length of liquid pipe Ø9.52(m)
L1 L2 L3
a b c d
Ø6.35:5m d Ø6.35:4m c Ø6.35:3m b Ø9.52:3m a
Ø9.52:5m
L3
Ø9.52:10m
L2
Ø9.52:10m
L1
The Amount of Refrigerant
2. Special condition
In case of the No. of CST TE/RAC SE/ARTCOOL SF models are over than 50% of the connected indoor units
when the total No. of connected indoor units are over than 50% of the max. connectable indoor units.
■
Additional refrigerant charging amount (kg) :
= (A x + B x ß) - (AVG x ß)
• A = Total No. of TE,SE and SF Indoor units, = 0.5
• B = Total No. of except TE,SE and SF Indoor units, ß = 0.3
• AVG = 50% of Max. No. of connectable Indoor units.
Example)
1) Installation Information
- Outdoor unit : 6HP
- Total indoor units : 6 units (TE 3 units, SE 2 units, BH 1 unit)
2) Information from PDB
- Max. No. of connectable indoor units : 10 units
- Calculated additional refrigerant amount = 2 kg :
3) Indoor refrigerant charging amount
= (5 units x 0.5+1 unit x 0.3) - (5 units x 0.3) = 1.3 kg :
Revised the total additional charging amount = = 2 kg +1.3 kg
= 3.3 kg
+ =
Total amount(kg) A B
+
C