Pipe Bending Guidelines; To Flare The Pipe End - Daikin ERGA06EAV3H Installer's Reference Manual
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Also See for ERGA06EAV3H:
- Installer's reference manual (300 pages) ,
- Installer's reference manual (288 pages) ,
- Installer's reference manual (272 pages)
Table of Contents
8.2.4 Pipe bending guidelines
8.2.5 To flare the pipe end
ERGA04~08EAV3+V3A+V37 + EHSH/X(B)04+08P30+50EF
Daikin Altherma 3 R ECH₂O
4P678716-1 – 2022.01
▪
Coat the flare inner surface with ether oil or ester oil when connecting a flare
nut. Tighten 3 or 4 turns by hand, before tightening firmly.
▪
ALWAYS use 2 wrenches together when loosening a flare nut.
▪
ALWAYS use a spanner and torque wrench together to tighten the flare nut when
connecting the piping. This to prevent nut cracking and leaks.
a
b
c
d
a Torque wrench
b Spanner
c Piping union
d Flare nut
Piping size (mm)
Tightening torque
Ø6.4
Ø15.9
Use a pipe bender for bending. All pipe bends should be as gentle as possible
(bending radius should be 30~40 mm or larger).
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
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.
Flare dimensions
(N•m)
(A) (mm)
15~17
8.7~9.1
62~75
19.3~19.7
b
8
Piping installation
|
Flare shape (mm)
90°
±2
ØA
R=
0.4~0.8
Installer reference guide
91
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