Specifications

SiBE341027 Features
General Information 15

For the existing piping, please check the followings
• The existing piping should meet the condition of design pressure 3.3MPa.
Concretely, it should meet the minimum thickness for VRVIII-Q shown in the table below.
→
Existing Daikin R-22 piping meets the minimum thickness of VRVIII-Q.
• The existing piping should not be corroded on the external appearance.
Taper grade (O type, 1/2H type) in the table indicate the material types specified in JIS H3300.
In case of bending O material, set the round bending to 3xD or more (D: Outer Diameter)
1/2H materials are calculated without setting the bending.
Outer diameter of piping
VRVIII-Q Daikin for R-22 (for reference)
Material
Minimum thickness
(mm)
Material
Minimum thickness
(mm)
φ
6.4
{
0.4
{
0.80
φ
9.5
{
0.5
{
0.80
φ
12.7
{
0.7
{
0.80
φ
15.9
{
0.9
{
0.99
φ
19.1 1/2H 0.6
{
0.80
φ
22.2 1/2H 0.6 1/2H 0.80
φ
25.4 1/2H 0.7 1/2H 0.88
φ
28.6 1/2H 0.8 1/2H 0.99
φ
31.8 1/2H 0.9 1/2H 1.10
φ
34.9 1/2H 1.0 1/2H 1.21
φ
38.1 1/2H 1.1 1/2H 1.32
φ
41.3 1/2H 1.1 1/2H 1.43