LG ARUB100LT3, Installation Manual

Page: 42 / 133

Pipe connections between indoor and outdoor unit
u
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)
+
+
+
=
+
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
Number of installed
HR units
+
+
+
CF value of
indoor unit
+
Outdoor unit
HR unit (1EA)
Indoor
unit
Ex) 16HP
Additional Charge = A x 0.118 + (B+C+D) x 0.061 + E
x 0.022 + HR unit
= 50 x 0.118 + 30 x 0.061 + 10 x 0.022
+ 0.5(HR)
= 8.45(kg)
A: Ø12.7, 50m
B: Ø9.52, 10m
C: Ø9.52, 10m
D: Ø9.52, 10m
E: Ø6.35, 10m
CAUTION
Use only 2-series of indoor unit. Ex) ARNU***2
CF value of indoor unit (unit : kg)
Capacity(Btu/h(kW)) 5k 7k 9k 12k 15k 18k 24k 28k 36k 42k 48k 76k 96k
Type (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)
Ceiling Concealed Duct (Low Static) - 0.17 0.17 0.17 0.17 0.37 0.37 - - - - - -
Ceiling Concealed Duct (High Static) - 0.26 0.26 0.26 0.26 0.26 0.26 0.44 0.44 0.44 0.62 1.00 1.00
Wall Mounted - 0.24 0.24 0.24 0.24 0.28 0.28 - - - - - -
1Way Ceiling Cassette - 0.20 0.20 0.20 - 0.29 0.29 - - - - - -
2Way Ceiling Cassette - - - - - 0.16 0.16 - - - - - -
4Way Ceiling Cassette 0.18 0.18 0.25 0.25 0.32 0.32 0.48 0.48 0.64 0.64 0.64 - -
ARTCOOL Gallery - 0.10 0.10 0.10 - - - - - - - - -
Floor Standing - 0.17 0.17 0.17 0.17 0.37 0.37 - - - - - -
Ceiling & Floor - - 0.10 0.10 - - - - - - - - -
Ceiling Suspended - - - - - 0.35 0.35 - 0.54 - 0.75 - -
Console - 0.17 0.17 0.17 0.17 - - - - - - - -
Fresh Air Intake Unit - - - - - - - - - - 0.62 1.00 1.00
Heat recovery ventilator(DX) - - - 0.20 - 0.20 0.20 - - - - - -
42 Outdoor Unit