Pipe Bending Guidelines; To Flare The Pipe End; Using The Stop Valve And Service Port - Daikin RXTM30R2V1B Installer's Reference Manual

7 | Piping installation

7.2.4 Pipe bending guidelines

7.2.5 To flare the pipe end

7.2.6 Using the stop valve and service port

To handle the stop valve
Installer reference guide
36
Use a pipe bender for bending. All pipe bends should be as gentle as possible
(bending radius should be 30~40 mm or larger).
CAUTION
▪
Incomplete flaring may cause refrigerant gas leakage.
▪
Do NOT re-use flares. Use new flares to prevent refrigerant gas leakage.
▪
Use flare nuts that are included with the unit. Using different flare nuts may
cause refrigerant gas leakage.
1 Cut the pipe end with a pipe cutter.
2 Remove burrs with the cut surface facing down so that the chips do NOT enter
the pipe.
a
a Cut exactly at right angles.
b Remove burrs.
3 Remove the flare nut from the stop valve and put the flare nut on the pipe.
4 Flare the pipe. Set exactly at the position as shown in the following figure.
A
Flare tool for R32
(clutch type)
A 0~0.5 mm
5 Check that the flaring is properly made.
a
a Flare's inner surface MUST be flawless.
b The pipe end MUST be evenly flared in a perfect circle.
c Make sure the flare nut is fitted.
CAUTION
Do NOT open the valves before flaring is complete. This would cause refrigerant gas
leakage.
Take the following guidelines into account:
b
Conventional flare tool
Clutch type
(Ridgid-type)
1.0~1.5 mm
b
c
Wing nut type
(Imperial-type)
1.5~2.0 mm
RXTM-R_RXTP-R_ARXTP-R_RXTA-B
R32 split series
4P518023-11H – 2021.03