Refrigerant Piping - LG L8UC100BFA2 Installation Manual

Installation of Indoor, Outdoor Unit

Refrigerant piping

Perform the work according to the Service Manual or Installation Guide.
• Use two spanners when connecting the
refrigerant pipe to the unit.
• Make a bend with a radius as large as
possible.
• Perform air purge with R22 or vacuum drying.
• When piping work is finished, check all joints.
I Add refrigerant if piping over 7.5m as shown
below, non distributor type.
I Add refrigerant if piping over 5m (main pipe),
7.5m (branch pipe) as shown below, distributor
type.
Table. Distributor type
48/60 kBtu/h
Main Pipe
90 kBtu/h
12/18 kBtu/h
Branch Pipe
24/30/36 kBtu/h
48 kBtu/h
Table. Non Distributor type
12/18 kBtu/h
Branch Pipe 24/30/36 kBtu/h
48 kBtu/h
10 Multi Type Air Conditioner
Pipe (mm)
Gas Liquid
Ø19.05 Ø9.52
Ø25.4 Ø12.7
Ø12.7 Ø6.35
Ø15.88 Ø6.35
Ø19.05 Ø9.52
Pipe (mm)
Gas Liquid
Ø12.7 Ø6.35
Ø15.88 Ø6.35
Ø19.05 Ø9.52
Indoor
Factory charged
Outdoor
Additional
Refrigerant
50g/m
120g/m
20g/m
30g/m
50g/m
Additional
Refrigerant
20g/m
30g/m
50g/m
Flared connection (Union)
Use a seemliness tube
Flared connection
(Service valve, Ball valve)