Toshiba RAS-4M23SACV-E Installation Manual page 11

Outer diameter of copper pipe
6.35 mm
9.52 mm
12.7 mm
• Tightening torque for connection of flare pipe
The pressure of R410A is higher than R22. (Approx. 1.6 times.) Therefore
securely tighten the flare pipes which connect the outdoor unit and the indoor
unit with the specified tightening torque using a torque wrench.
If any flare pipe is incorrectly connected, it may cause not only a gas leakage
but also trouble in the refrigeration cycle.
RAS-4M23SAV-E,
RAS-4M23SACV-E
A 1 unit: 16 or 13 or 10
B 1 unit: 13 or 10
C 1 unit: 13 or 10
D
Total
* The unit A connection port diameter is 6.35 / 9.52 for the 4M23 and 6.35 / 12.7 for the 3M26 and 4M27.
* Use a different-diameter joint if the diameters of the connection port and connection piping are different.
* Mount the different-diameter joint on the connection port of the outdoor unit.
* Only one 16-class indoor unit can be connected to the 4M23.
A 1-room connection is not an option for the indoor units (you cannot connect only one indoor unit).
A 2-room or more connection must always be used for the indoor units (you must connect at least two indoor units).
All combinations that do not exceed the "Total" number can be installed. Note that expanders and reducers may be required
depending on the combination method.
Tightening torque
14 to 18 (1.4 to 1.8 kgf·m)
33 to 42 (3.3 to 4.2 kgf·m)
50 to 62 (5.0 to 6.2 kgf·m)
10
46
(Unit: N·m)
Outdoor unit
RAS-3M26GAV-E
1 unit: 16 or 13 or 10
1 unit: 16 or 13 or 10
1 unit: 13 or 10
45
9
Flare at indoor
unit side
Flare at outdoor
unit side
4M23, 4M27
6.35
Unit D
9.52
6.35
Unit C
9.52
6.35
Unit B
9.52
6.35
Unit A
9.52 or 12.7
Indoor unit
RAS-4M27GAV-E,
RAS-4M27GACV-E
1 unit: 16 or 13 or 10
1 unit: 16 or 13 or 10
1 unit: 13 or 10
1 unit: 13 or 10
52
EN