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SMMS-i
Installation Manual
EN
SMMS-i
Installation Manual
REQUIREMENT
• For a welding work of the refrigerant pipes, be sure to use nitrogen gas in order to prevent oxidation of the inside
of the pipes; otherwise clogging of the refrigerating cycle due to oxidized scale may occur.
• Use clean and new pipes for the refrigerant pipes and perform piping work so that water or dust does not
contaminate the refrigerant.
• Be sure to use a double spanner to loosen or tighten the flare nut. If a single spanner is used, the required level
of tightening cannot be obtained. Tighten the flare nut with the specified torque. (If it is hard to loosen or tighten
the flare nut of the balance pipe or packed valve of the liquid side with a double spanner, loosen or tighten the
flare nut while holding the valve mounting plate with a spanner.)
Pipe connection method of valve at the gas side (Example)
Type
Pipe
diameter
Draw-out forward Draw-out downward
MAP080
MAP100
Ø22.2
Cut the L-shaped pipe at the horizontal straight
section, then braze the supplied attachment
pipe and the socket and pipe procured locally.
Cut the L-shaped pipe at the vertical straight
section, then braze the supplied attachment
pipe and the socket and pipe procured locally.
MAP120
Ø28.6
Cut the L-shaped pipe at the horizontal straight
section, then braze the supplied attachment
pipe and the socket and pipe procured locally.
Cut the L-shaped pipe at the vertical straight
section, then braze the supplied attachment
pipe and the socket and pipe procured locally.
Outer dia. of
copper pipe
Tightening torque (N•m)
6.4 mm 14 to 18 (1.4 to 1.8 kgf•m)
9.5 mm 33 to 42 (3.3 to 4.2 kgf•m)
12.7 mm 50 to 62 (5.0 to 6.2 kgf•m)
15.9 mm 63 to 77 (6.3 to 7.7 kgf•m)
Ball valve of gas side
Packed valve of liquid
side
Packed valve of
balance pipe
Section to be
cut
Gas
pipe
Attachment
pipe
Socket
Pipe
Liquid
pipe
Balance
pipe
Gas pipe
Section
to be cut
Attachment
pipe
Socket
Pipe
Liquid
pipe
Balance
pipe
Gas pipe
Gas
pipe
Section to be
cut
Gas
pipeLiquid
pipe
Balance
pipe
Attachment pipe
Socket
Pipe
Gas pipe
Section
to be cut
Liquid
pipe
Balance
pipe
Gas
pipe
Attachment
pipe
Socket
Pipe
Gas pipe
Extruding margin of copper pipe with flare machining: B (Unit: mm)
Extruding margin of copper pipe with flare tools: A (Unit: mm)
* When using the conventional flare tool, to connect R410A pipes with flaring, make a margin approx. 0.5mm
longer than that of an R22 pipe so that the flare size matches the one specified. It is convenient to use a copper
pipe gauge for size adjustment of the extruding margin.
MAP140
MAP160
Ø28.6
Cut the L-shaped pipe at the horizontal straight
section, then braze the supplied attachment
pipe, and the socket and pipe procured locally.
Cut the L-shape pipe at the vertical straight
section, then braze the supplied attachment
pipe, and the socket and pipe procured locally.
Copper pipe outer
dia.
When using R410A
tool
When using
conventional tool
9.5
12.7
15.9
0 to 0.5 1.0 to 1.5
Copper pipe outer dia. A
9.5 13.2
12.7 16.6
15.9 19.7
Type
Pipe
diameter
Draw-out forward Draw-out downward
Section
to be cut
Gas
pipe
Attachment pipe
Socket
Pipe
Liquid
pipe
Balance
pipe
Gas pipe
Section
to be cut
Gas
pipe
Attachment
pipe
Socket
Pipe
Liquid
pipe
Balance
pipe
Gas pipe
B
+0
-0.4
A
19-EN 20-EN
+00EH99871699_01EN.book Page 10 Thursday, August 26, 2010 4:41 PM