LG Multi V ARUN100LTH4 Installation Manual page 39

The amount of Refrigerant
The calculation of the additional charge should take into account the length of pipe and CF(correc-
tion Factor) value of indoor unit.
Additional charge(kg)
Amount refrigerant of Indoor units
Example) 4 Way Ceiling Cassette 14.5 kW -1ea, Ceiling concealed Duct 7.3 kW-2 ea,
Wall Mounted 2.3 kW-4ea
CF = 0.64 × 1 + 0.26 × 2 + 0.24 × 4 = 2.12 kg
Attach the additional refrigerant table of IDU.
CAUTION
!
• Use only 2-series of indoor unit. Ex) EX) ARNU ***2
• Do not connect Hydro kit with Multi V IV Models.
PIPE CONNECTIONS BETWEEN INDOOR AND 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
39
x 0.480(kg/m)
x 0.354(kg/m)
x 0.266(kg/m)
x 0.173(kg/m)
x 0.118(kg/m)
x 0.061(kg/m)
x 0.022(kg/m)