Refrigerant Piping - LG ARUN50GS2A Quick Manual

REFRIGERANT PIPING

U3 Chassis (2 Fan Model)
Connecting the pipes to the outdoor unit
Braze suitable field piping with service valve of gas pipe.
<Liquid pipe>
CAUTION
!
Take care so that there is no thermal damage on the service
valves of the outdoor unit.
(Especially packing part of service port.) Wrap the service valve
with a wet towel when brazing it as shown figure above.
Possible direction for field piping
- The installation piping is connectable in four directions.(refer to figure
1)
- When connecting in a downward direction, knock out the knockout
hole of the base pan.
(refer to figure2, figure3)
<Figure1>
Forward
<Figure2>
Knock-out
<Figure3>
Wet towel
<Gas pipe>
Back-
ward
Downward
Sideways
Base pan
Pipe knock
out during the
ground piping.
CAUTION
!
• You should not dame pipe/base during the work of pipe knock
out.
• Operate piping work removing burr after pipe knock out.
Preventing foreign objects from entering (Figure 4)
- Plug the pipe through-holes with putty or insulation material(procured
locally)to stop up all gaps,as shown in the figure 3.
- Insects or small animals entering the outdoor unit may cause a short
circuit in the electrical box.
<Figure4>
Putty or insulating material
(produced locally)
CAUTION
!
• Make sure that pipe doesn't contact with
the compressor terminal cover
and comp bolt.
• Always insulate the liquid and gas-side field
piping and branch.
U4 Chassis (1Fan Model)
- After connecting the refrigerant pipe and checking the refrigerant
leakage, cover it with heat insulator and roll around it with vinyl tape.
Tighten up the flare nut fitting on regulated torque. (Until "clatter"
sounds is made at torque wrench part.)
The centers correspond
with each other
Refrigerant pipe Flare nut
Cap
Pipe
Pipe
- Do not bend the pipe more than twice and work on it making it a big
half circle.
If it is folded over, cooling/heating capacity may decrease and it could
be the reason of malfunction.
Do not remove the cap on flare side until the connection.
Dust and sand inside pipes can be the reason of malfunction.
- Bend it following the wall and connect to outdoor unit valve.
Liquid side piping
(Smaller Dia.)
Gas side piping
(Bigger Dia.)
Connecting wire
Drain hose
Connection pipe
Socket flare
Flare nut
Screw wrench
Torque wrench
Pipe
11