Refrigerant Piping - LG MULTI V mini R410A Manual Del Usuario

Refrigerant Piping

Refrigerant Piping
I Connecting the pipes to the outdoor unit
1. Liquid pipe
• Align the center of the pipings and sufficiently tighten
the flare nut with fingers.
• Finally, tighten the flare nut with torque wrench until
the wrench clicks.
- When tightening the flare nut with torque wrench,
ensure the direction for tightening follows the arrow
on the wrench.
Outside diameter
mm
Ø9.52
2. Gas pipe
• Braze suitable field piping with service valve of gas 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.
I Possible direction for field piping
• For the units with capacity more than 42 kBtu/h, 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 figure 2)
<Figure 1>
Forward
<Figure 2>
Knock-out
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.
22 Outdoor Unit
Torque
kgf . m(lbf·ft)
inch
3/8 3.4~4.2(24.6~30.4)
Backward
Downward
Sideways
Base pan
Torque wrench
<Liquid pipe>
I
Preventing foreign objects from
entering (Figure3)
• 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.
<Figure 3>
Putty or insulating material
(produced locally)
Wet towel
<Gas pipe>
Liquid side piping
(Smaller Dia.)
Gas side piping
(Bigger Dia.)
Connecting wire
Drain hose
Connection pipe