GIA giatsu IX43 R32 Manuel D'installation page 58

Table 6.2
Total piping length
(farthest distance from
Piping
the line pipe branch)
length
(farthest distance from
the line pipe branch)
Drop height between
Drop
indoor and outdoor unit
height
Drop height between
two indoor units
Size of joint pipes for indoor or outdoor unit
Size of joint pipes for 410A unit
Table 6.3
Size of main pipe(mm)
Model
Gas side
Φ9.52(0.37")
9K
Φ9.52(0.37")
12K
Φ12.7(0.5")
Φ12.7(0.5")
18K
24K Φ15.9(0.626")
Φ15.9(0.626")
30K/
36K
Φ19(0.75")
Φ15.9(0.75")
48K/
Φ19(0.75")
60K
Φ22(0.866")
CAUTION
Please select the connection pipe according
to the actual model.
Refrigerant Piping Connection Instructions
CAUTION
The branching pipe must be installed
•
horizontally. An angle of more than 10° may
cause malfunction.
DO NOT install the connecting pipe until
•
both indoor and outdoor units have been
installed.
Insulate both the gas and liquid piping to
•
prevent water leakage.
 Page 22 
Permitted length
18K+18K 30/98' L+Max
(L1, L2)
24K+24K 50/164'
30K+30K
15/49' L1, L2
10/32.8' L1-L2
20/65.6' H1
0.5/1.6' H2
Available
Liquid side
branching pipe
CE-FQZHN-01C
Φ6.35(0.25")
CE-FQZHN-01C
Φ6.35(0.25")
CE-FQZHN-01C
Φ6.35(0.25")
CE-FQZHN-01C
Φ9.52(0.375")
CE-FQZHN-01C
Φ9.52(0.375")
Φ9.52(0.375")
CE-FQZHN-01C
or Φ12.7(0.5")
Step1: 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.
refrigerantmodels, the pipe connection
points must be placed outside of room.
The connection pipes can not be reused.
1. Measure the distance between the indoor
and outdoor units.
2. Using a pipe cutter, cut the pipe a little
longer than the measured distance.
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. Make sure that the pipe is cut at a perfect
90° angle. Refer to Fig. 6.4 for examples
of bad cuts
90°
Oblique
Fig. 6.4
Step2: Remove burrs.
Burrs can a ect the air-tight seal of 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.
Point down
Fig. 6.5
For R32/R290
Rough
Warped
Pipe
Reamer