Installation Guide

Pipe
Reamer
Point down
Fig. 7.5
Table 7.2
Permitted length
Piping
Length
Total Piping length 18K+18K 30m/98’ L+Max
(L1, L2)
24K+24K
30K+30K
50m/164’
(farthest distance from
the line pipe branch)
15m/50’ L1, L2
(farthest distance from
the line pipe branch)
10m/33’ L1-L2
Drop
Height
Drop height between
indoor and outdoor unit
20m/66’ H1
Drop height between
two indoor units
0.5m/1.5’ H2
CAUTION
DO NOT deform pipe while cutting. Be extra
careful not to damage, dent, or deform the pipe
while cutting. This will drastically reduce the
heating efficiency of the unit.
1. Ensure that the pipe is cut at a perfect
90° angle. Refer to Fig. 7.4 for examples
of bad cuts.
Oblique Rough Warped
90°
Fig. 7.4
Step 2: Remove burrs
Burrs can aect the air-tight seal of the refrigerant
piping connection. They must be completely
removed.
1. Hold the pipe at a downward angle, to
prevent burrs from falling into the pipe.
2. Using a reamer or deburring tool, remove
all burrs from the cut section of the pipe.
Refrigerant Piping Connection
Step 1: Cut pipes
When preparing refrigerant pipes, take extra
care to cut and flare them properly. This will
ensure efficient operation, and minimize the
need for future maintenance.
1. Measure the distance between the indoor
and outdoor units.
2. Using a pipe cutter, cut the pipe a bit
longer than the measured distance.
 Page 20 