Johnson Controls (H,Y)VAHP072B31CW, Installation And Maintenance Manual

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P00877Q
9
x
Flaring Dimension
3HUIRUPWKHÀDULQJZRUNDVVKRZQEHORZ
x
Joint Selection
,IKDUGWHPSHUSLSHLVXVHGWKHÀDULQJZRUNFDQQRWEHSHUIRUPHG,QWKLVFDVHXVHDMRLQWVHOHFWHGIURP
the table below.
(
7
,WLVLPSRVVLEOHWRSHUIRUPÀDULQJZRUN
with hard temper pipe.
8VHDQDFFHVVRU\SLSHZLWKDÀDUH
inch (mm)
Diameter
(d)
A
+0
-0.02 (-0.4)
R410A
1/4 (6.35) 0.36 (9.1)
3/8 (9.52) 0.52 (13.2)
1/2 (12.7) 0.65 (16.6)
5/8 (15.88) 0.78 (19.7)
3/4 (19.05) (
7
)
< Minimum Thickness of Joint >
inch (mm)
Diameter R410A
1/4 (6.35) 0.020 (0.5)
3/8 (9.52) 0.024 (0.6)
1/2 (12.7) 0.028 (0.7)
5/8 (15.88) 0.031 (0.8)
3/4 (19.05) 0.031 (0.8)
7/8 (22.2) 0.035 (0.9)
1-1/8 (28.58) 0.039 (1.0)
1-3/8 (34.93) 0.047 (1.2)
1-5/8 (41.28) 0.057 (1.45)
3.3 Flaring and Joint
< Flare Nut Dimension B >
inch (mm)
Diameter R410A
1/4 (6.35) 21/32 (17)
3/8 (9.52) 7/8 (22)
1/2 (12.7) 1-1/32 (26)
5/8 (15.88) 1-5/32 (29)
3/4 (19.05) 1-13/32 (36)
NOTE:
Do not use a thin joint other than
the ones shown in the table at the left.
NOTES:
• Do not use the pipe that allowable
pressure is less than 601 psi (4.15MPa).
• The reference value of the refrigerant
piping thickness is indicated in the table
at left.
Do not use the pipe which is considerably
different from the reference value.
B
Flare Nut
x
Piping Thickness and Material
Use the pipe as below.
The thickness of refrigerant pipe differs depending on design pressure.
For copper pipe, pay attention to pipe selection, because the piping thickness differs depending on its
material.
inch (mm)
Outer Diameter
R410A
Thickness Temper
1/4 (6.35) 0.03 (0.76) Annealed
3/8 (9.52) 0.032 (0.81) Annealed
1/2 (12.7) 0.032 (0.81) Annealed
5/8 (15.88) 0.035 (0.89) Annealed
3/4 (19.05) 0.035 (0.89) Hard Temper (or Annealed)
7/8 (22.2) 0.045 (1.14) Hard Temper
1-1/8 (28.58) 0.050 (1.27) Hard Temper
1-3/8 (34.93) 0.065 (1.65) Hard Temper
1-5/8 (41.28) 0.072 (1.83) Hard Temper
1/64 ~ 1/32R
A
d
90
o + 2 o
45
o
+ 2
o