TC-12001
2-45
4-WAY CASSETTE
P5414946-rev.1
15
5. Refrigerant Piping Work
5.2
Piping Connection
(1) Position of piping connection is shown in
Fig. 5.1. (Indoor Unit)
(3) Select clean copper pipes. Make sure there
is no dust and moisture inside. Use a pipe
cutter to avoid a grind swarf generation for
the pipe cutting work. (Do not use a saw
or a grind stone to cut pipes.) Blow the
inside of the pipes with nitrogen or dry air, to
remove any dust or foreign materials before
connecting pipes.
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(R410A) to the outdoor unit in the refrigerant
cycle. Do not charge material other than R410A
into the unit such as hydrocarbon refrigerants
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(acetylene or etc.) or poisonous gases when
installing, maintaining and moving. These
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5.1
Piping Materials
(1) Prepare locally-supplied copper pipes.
(2) Select the piping size from the following
table.
Fig. 5.1 Position of Piping Connection
mm (in.)
Model
Gas Piping
Liquid Piping
RCI-1.0FSN3
RCI-1.5FSN3
I
12.7 (1/2)
I
6.35 (1/4)
RCI-2.0FSN3
I
15.88 (5/8)
I
6.35 (1/4)
RCI-2.5FSN3
RCI-3.0FSN3
RCI-4.0FSN3
RCI-5.0FSN3
RCI-6.0FSN3
I
15.88 (5/8)
I
9.52 (3/8)
mm (in.)
Diameter
(
I
d)
A
+0
-0.4
6.35 (1/4)
9.1
9.52 (3/8)
13.2
12.7 (1/2)
16.6
15.88 (5/8)
19.7
(2)
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(mm)
84
90 (Liquid Pipe)
76 (Gas Pipe)
95 (GasPipe)
160 (Liquid Pipe)
237 (Liquid Pipe)
220 (Gas Pipe)
30
Gas Pipe Connection
Liquid Pipe Connection
0.4 ~ 0.8R
I
A
I
d
90
o
+ 2
o
45
o
+ 2
o
