LG ARUN80LN3 Installation Manual page 42

Pipe connections between indoor and outdoor unit
◆ The amount of Refrigerant
The calculation of the additional charge should take into account the length of pipe and CF(correction
Factor) value of indoor unit.
Additional charge(kg)
CF value of indoor unit
Capacity(Btu/h(kW))
Type
Ceiling Concealed Duct (Low Static)
Ceiling Concealed Duct (High Static)
Wall Mounted
1Way Ceiling Cassette
2Way Ceiling Cassette
4Way Ceiling Cassette
ARTCOOL Gallery
Floor Standing
Ceiling & Floor
Ceiling Suspended
Console
Fresh Air Intake Unit
Heat recovery ventilator(DX)
CAUTION
Use only 2-series of indoor unit. Ex) ARNU***2
42 Outdoor Unit
Total liquid pipe
=
:Ø25.4 mm
Total liquid pipe
+
:Ø22.2 mm
Total liquid pipe
+
:Ø19.05 mm
Total liquid pipe
+
:Ø15.88 mm
Total liquid pipe
+
:Ø12.7 mm
Total liquid pipe
+
:Ø9.52 mm
Total liquid pipe
+
:Ø6.35 mm
CF value of indoor unit
+
5k 7k
(1.6) (2.2) (2.8) (3.6) (4.5) (5.6) (7.1) (8.2) (10.6) (12.3) (14.1) (22.4) (28.0)
- 0.17 0.17 0.17 0.17 0.37 0.37
- 0.26 0.26 0.26 0.26 0.26 0.26 0.44 0.44 0.44 0.62 1.00 1.00
- 0.24 0.24 0.24 0.24 0.28 0.28
- 0.20 0.20 0.20
- -
0.18 0.18 0.25 0.25 0.32 0.32 0.48 0.48 0.64 0.64 0.64
- 0.10 0.10 0.10
- 0.17 0.17 0.17 0.17 0.37 0.37
- - 0.10 0.10
- -
- 0.17 0.17 0.17 0.17
- -
- -
9k 12k 15k 18k
- 0.29 0.29
- - - 0.16 0.16
- -
- -
- - - 0.35 0.35
-
- - - -
- 0.20 - 0.20 0.20
Amount refrigerant of Indoor units
Example) 4Way Ceiling Cassette 14.5kW -1ea
Ceiling concealed Duct 7.3kW-2ea
Wall Mounted 2.3kW-4ea
CF = 0.64 × 1 + 0.26 × 2 + 0.24 × 4 = 2.12 kg
24k 28k 36k 42k
- - -
- - -
- - -
- - -
- - - -
- - -
- - - -
- 0.54 -
- - - -
- - - -
- - -
(unit : kg)
48k 76k 96k
- - -
- - -
- - -
- - -
- -
- - -
- - -
- - -
0.75 - -
- - -
0.62 1.00 1.00
- - -