Toshiba MMY-MAP0501HT7 Installation Manual page 14

5
REFRIGERANT PIPING
MMY- Pipe diameter
∗ ∗ ∗ ∗ ∗
MAP0501 Ø15.9
∗ ∗ ∗ ∗ ∗
MAP0601 Ø19.1
∗ ∗ ∗ ∗ ∗
MAP0801 Ø22.2
∗ ∗ ∗ ∗ ∗
MAP1001
∗ ∗ ∗ ∗ ∗
MAP1201 Ø28.6
• Extruding margin of copper pipe with flare machining : B (Unit: mm)
Copper pipe outer dia.
9.5
12.7
15.9
∗ When using the conventional flare tool, to
connect R410A pipes with flaring, make a
margin approx. 0.5mm longer than that of
R22 pipe so that the flare size matches
with the specified one. It is convenient to
use a copper pipe gauge for size
adjustment of the extruding margin.
Pipe connecting method of valve at gas side (Example)
Draw-out forward
Connect Ø15.9 pipe with flaring.
Connect the attached pipe to the valve with
flaring, and then braze the elbow and pipe
procured locally.
Attached pipe
Cut L-shape pipe at the straight
section, and then braze the elbow,
socket and pipe procured locally.
Section to
be cut
Cut L-shape pipe at the straight
section, and then braze the
elbow and pipe procured locally.
Section to
be cut
Rigid (Clutch type)
R410A tool used Conventional tool used
0 to 0.5
Connect Ø15.9 pipe with flaring.
Connect the attached pipe to the
valve with flaring, and
then braze the socket,
elbow and pipe
procured locally.
Pipe
Elbow
Cut L-shape pipe at the straight
section, and then braze the elbow,
socket and pipe procured
locally.
L-shape
pipe
Attached
pipe
Elbow
pipe
Pipe
Cut L-shape pipe at the
straight section, and then
braze the elbow, socket
and pipe procured locally.
L-shape
pipe
Elbow
pipe
Imperial (Wing nut)
1.0 to 1.5
• Extruding margin of copper pipe with flare tools :
A (Unit: mm)
Copper pipe outer dia.
9.5
12.7
15.9
11
Draw-out downward
Attached pipe
Socket
Pipe
Elbow
Section to
be cut
Elbow
Section to
be cut
Elbow
1.5 to 2.0
2.0 to 2.5
+0.0
A
–0.4
A
13.2
16.6
19.7
Pipe
L-shape
pipe
Attached
pipe
Pipe
L-shape
pipe
Socket
Pipe
Pipe