Daikin VRV II RXYQ5MY1B Service Manual page 333

Precautions for New Refrigerant (R410)
1. Flaring tool
2 Dimension A
2 Change of dimension A
Conventional flaring tools can be used when the work process is changed.
(change of work process)
Previously, a pipe extension margin of 0 to 0.5mm was provided for flaring. For R410A air
conditioners, perform pipe flaring with a pipe extension margin of 1.0 to 1.5mm.
(For clutch type only)
Conventional tool with pipe extension margin adjustment can be used.
322
Flare gauge
Specifications
Tube O.D.
Nominal size
Do
1/4 6.35
3/8 9.52
1/2 12.70
5/8 15.88
3/4 19.05
Differences
A +0
-0.4
Class-2 (R410A)
9.1
13.2
16.6
19.7
24.0
Dimension A
For class-1: R407C
For class-2: R410A
Precautions for New Refrigerant (R410)
SiE39-404
Unit: mm
Class-1 (Conventional)
9.0
13.0
16.2
19.4
23.3