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Refrigerant Piping
20 Outside Unit
Refrigerant Piping
n Connecting the pipes to the outdoor unit
n Possible direction for field piping
• The installation piping is connectable in four direc-
tions.(refer to figure 1)
• When connecting in a downward direction, knock out
the knockout hole of the base pan.
(refer to figure2, figure3)
n 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.
• Braze suitable field piping with service valve of gas pipe.
<Gas pipe>
<Liquid pipe>
Wet towel
Forward
Sideways
Backward
Base pan
Downward
Knock-out
<Figure 1>
<Figure 2>
<Figure 4>
Gas side piping
(Bigger Dia.)
Liquid side piping
(Smaller Dia.)
Putty or insulating material
(produced locally)
Drain hose
Connecting wire
Connection 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.
Pipe knock
out during the
ground piping.
<Figure 3>
CAUTION
• You should not dame pipe/base during the work of
pipe knock out.
• Operate piping work removing burr after pipe knock
out.
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