PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT
39
ENGLISH
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 : Ø12.7 mm x 0.118(kg/m)
+ Total liquid pipe : Ø9.52 mm x 0.061(kg/m)
+ Total liquid pipe : Ø6.35 mm x 0.022(kg/m)
+ CF value of indoor unit
Amount refrigerant of Indoor units
Example) 4Way Ceiling Cassette 14.5kW -1ea, Ceiling concealed Duct w7.3kW-2ea,
Wall Mounted 2.3kW-4ea
CF = 0.64 × 1 + 0.26 × 2 + 0.24 × 4 = 2.12 kg
Attach the additional refrigerant table of IDU.
CAUTION
Do not connect 0 or 1 series of indoor unit. ex)ARNU****0(X) , ARNU****1(X)
!
1,MFL67798020, 2018. 4. 26. 7:06 Page 39
www.lgcomfortcooling.co.uk
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