Piping Materials And Sizes - Toshiba RAV-SM402MUT-E Service Manual

6-8. Piping Materials and Sizes

n Twin system
Use copper tube of Copper and copper alloy seamless pipes and tubes, with 40mg/10m or less in the
amount of oil stuck on inner walls of pipe and 0.8mm in pipe wall thickness for diameters for diameters 6.4,
9.5 and 12.7mm and 1.0mm, for diameter 15.9mm. Never use pipes of thin wall thickness such as 0.7mm.
Pipe side
Liquid side
n Triple system
Use copper tube of Copper and copper alloy seamless pipes and tubes, with 40 mg/10 m or less in the
amount of oil stuck on inner walls of pipe and 0.8 mm in pipe wall thickness for diameters 6.4, 9.5 and
12.7 mm and 1.0 mm, for diameter 15.9 mm. Never use pipes of thin wall thickness such as 0.7 mm.
<Between outdoor unit and distributor>
Outdoor unit
Main pipe
∗ (
): Pipe wall thickness
<Between distributor and indoor unit>
Indoor unit
Branch pipe
∗ (
): Pipe wall thickness
Main pipe
Gas side
Branch pipe
Main pipe
Branch pipe
Gas side
Liquid side
Gas side
Liquid side
In parentheres ( ) are wall thickness
Ø15.9 (1.0)
Ø12.7 (0.8)
Ø9.5 (0.8)
Ø6.4 (0.8)
[Unit: mm]
Ø15.9 (1.0)
Ø9.5 (0.8)
[Unit: mm]
SM56 type
Ø12.7 (0.8)
Ø6.4 (0.8)
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