Haier AU36NAHERA [12/26] Read before installation
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Haier AU36NAHERA [12/26] Read before installation

Haier AU42NAIERA [12/26] Read before installation
Use pipes made of phosphorus deoxidized copper.
Since the operation pressure of the units that use R410A is higher than that of the units for
use with R22, use pipes with at least the radial thickness specified in the chart below.
(Pipes with a radial thickness of 0.7mm or less may not be used.)
* Although it was possible to use type-O for pipes with a size of up to 19.05(3/4") with
conventional refrigerants, use type-1/2H pipes for units that use R410A.(Type-O pipes may
be used if the pipe size is
19.05 and the radial thickness is 1.2t.)
* The table shows the standards in Japan .using this table as a reference,choose pipes that
meet the local standards.
The flare machining dimensions for units that use R410A is larger than those for units that
use R22 in order to increase air tightness.
If a clutch type flare tool is used to machine flares on units that use R410A, make the
protruding part of the pipe between 1.0 and 1.5mm .Copper pipe gauge for adjusting the
length of pipe protrusion is useful.
Read Before Installation
10
<Piping Materials/Radial Thickness>
<Flare Machining(type-O and OL only)>
Flare Machining Dimension(mm)
External dimension
of pipes
Size
Dimension A
R410A
R22
6.35
9.52
12.7
15.88
19.05
1/4"
3/8"
1/2"
5/8"
3/4"
9.1
13.2
16.6
19.7
24.0
9.0
13.0
16.2
19.4
23.3
<Flare Nut>
Type-2 flare nuts instead of type-1 s are used to increase the strength. The size of some of
the flare nuts have also been changed.
Flare nut dimension(mm)
External dimension
of pipes
Size
Dimension B
R410A(Type2)
R22(Type1)
6.35
9.52
12.7
15.88
19.05
1/4"
3/8"
1/2"
5/8"
3/4"
17.0
22.0
26.0
29.0
36.0
17.0
22.0
24.0
27.0
36.0
Size(mm) Radial Thickness(mm)Size(inch) Type
Type-O pipes
Type-1/2H or Hpipes
6.35
9.52
12.7
15.88
1/4''
3/8''
1/2''
5/8''
0.8t
0.8t
0.8t
1.0t
19.05 3/4''
1.0t

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