Справочник Пользователя для Toshiba MMY-MAP1204HT8Z-E

• 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.)

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.

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.

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 

pipe

Liquid

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

* 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.

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.

9.5

12.7
15.9

0 to 0.5

1.0 to 1.5

9.5

13.2

12.7

16.6

15.9

19.7

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

A

+00EH99871699_01EN.book  Page 10  Thursday, August 26, 2010  4:41 PM