Daikin RXF50D5V1B, Руководство по установке для специалистов

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7 | Piping installation
Installer reference guide
39
RXF50~71D5V1B
R32 split series
4P519439-15Q – 2021.10
7.2.5 To flare the pipe end
NOTICE
▪
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 b
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)
Conventional flare tool
Clutch type
(Ridgid-type)
Wing nut type
(Imperial-type)
A 0~0.5 mm 1.0~1.5 mm 1.5~2.0 mm
5 Check that the flaring is properly made.
a b
c
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.
7.2.6 Using the stop valve and service port
CAUTION
Do NOT open the valves before flaring is complete. This would cause refrigerant gas
leakage.
To handle the stop valve
Take the following guidelines into account:
▪ The stop valves are factory closed.
▪ The following figure shows the stop valve parts required when handling the
valve.