
7
OC37 9 J
3Tools for R410A (The following table shows whether conventional tools can be used or not.)
1 /4 ”
3 /8 ”
1 /2 ”
5 /8 ”
3 /4 ”
6 .3 5
9 .5 2
12.70
15.88
19.05
9 .1
1 3 .2
1 6 .6
1 9 .7
—
9 .0
1 3 .0
1 6 .2
1 9 .4
2 3 .3
Nominal
dimensions
F lare cutting dimensions
O utside
diameter D imension A ( )
+ 0
- 0 .4
( inch) ( mm) ( mm)
R4 1 0 A R2 2 1 /4 "
3 /8 "
1 /2 "
5 /8 "
6 .3 5
9 .5 2
12.70
15.88
1 7 .0
2 2 .0
2 6 .0
2 9 .0
1 7 .0
2 2 .0
2 4 .0
2 7 .0
F lare nut dimensions D imension B( mm)
R410A
* * 3 6 .0 mm for
indoor unit
of RP 1 0 0 ,
R2 2
Nominal
dimensions
O utside
diameter
( inch) ( mm)
G a u g e m a n i f o l d
C h a r g e h o se
G a s l e a k d e t e ct o r
R e f r i g e r a n t r e c o v e r y e q u i p m e n t
R e f r i g e r a n t cyl in d e r
A p p l i e d o i l
S a f e t y ch a r g e r
C h a r g e va lve
V a cu u m p u m p
F la r e t o o l
Bender
P i p e cu t t e r
W e l d e r a n d n i t r o g e n g a s c y l i n d e r
R e f r i g e r a n t ch a r g i n g sca l e
V a cu u m g a u g e o r t h e r m i s-
t o r va cu u m g a u g e a n d
va cu u m va l ve
C h a r g i n g cyl i n d e r
A i r p u r g e , r e f r i g e r a n t c h a r g e a n d
O p e r a t i o n ch e ck
G a s l e a k ch e ck
C o l l e ct i o n o f r e f r i g e r a n t
R e f r i g e r a n t ch a r g e
A p p l y t o f l a r e d se ct i o n
P r e v e n t c o m p r e s s o r m a l f u n c t i o n
w h e n c h a r g i n g r e f r i g e r a n t b y
s p r a y i n g l i q u i d r e f r i g e r a n t
P r e v e n t g a s f r o m b l o w i n g o u t
w h e n d e t a c h i n g c h a r g e h o s e
V a cu u m d r yi n g a n d a i r
purge
F la r i n g w o r k o f p i p i n g
B e n d t h e p i p e s
C u t t h e p i p e s
W e l d t h e p i p e s
C h a r g e r e f r i g e r a n t
C h e c k t h e d e g r e e o f v a c u u m . (V a c u u m
v a l v e p r e v e n t s b a c k f l o w o f o il a n d r e f r i -
g e r a n t t o t h e r m i s t o r v a c u u m g a u g e )
C h a r g e r e f r i g e r a n t
To o l e xcl u si ve f o r R 410A
To o l e xcl u si ve f o r R 410A
To o l f o r HF C r e f r i g e r a n t
To o l e xcl u si ve f o r R 410A
To o l e xcl u si ve f o r R 410A
E st e r o i l a n d a l kyl b e n ze n e
o i l (m i n i m u m a m o u n t )
To o l e xcl u si ve f o r R 410A
To o l e xcl u si ve f o r R 410A
To o l s f o r o t h e r r e f r i g e r a n t s c a n
b e u s e d i f e q u i p p e d w i t h a d o p -
t e r f o r r e v e r s e f l o w c h e c k
To o l s f o r o t h e r r e f r i g e r a n t s
ca n b e u se d b y a d j u st i n g
f l a r i n g d i m e n si o n
To o l s f o r o t h e r r e f r i g e r a n t s c a n b e u s e d
To o l s f o r o t h e r r e f r i g e r a n t s c a n b e u s e d
To o l s f o r o t h e r r e f r i g e r a n t s c a n b e u s e d
To o l s f o r o t h e r r e f r i g e r a n t s c a n b e u s e d
To o l s f o r o t h e r r e f r i g e r a n t s
ca n b e u se d
To o l e xcl u si ve f o r R 410A
To o l s a n d m a t e r i a l s U se R 410A t o o l s C a n R 22 t o o l s b e u se d ?
(U sa b l e i f e q u i p p e d
w i t h a d o p t e r f o r r e ve r -
se f l o w )
(U sa b l e b y a d j u st i n g
f l a r i n g d i m e n si o n )
C a n R 407C t o o l s b e u s e d ?
E st e r o i l :
A l kyl b e n ze n e o i l : m i n i m u m a m o u n t
(U sa b l e i f e q u i p p e d
w i t h a d o p t e r f o r r e ve r -
se f l o w )
(U sa b l e b y a d j u st i n g
f l a r i n g d i m e n si o n )
: P r e p a r e a n e w t o o l . (U se t h e n e w t o o l a s t h e t o o l e xcl u si ve f o r R 410A . )
: To o l s f o r o t h e r r e f r i g e r a n t s ca n b e u se d u n d e r ce r t a i n co n d i t i o n s.
: To o l s f o r o t h e r r e f r i g e r a n t s ca n b e u se d .
2Dimensions of flare cutting and flare nut
The component molecules in HFC refrigerant are smaller compared to conventional refrigerants. In addition to that,
R410A is a refrigerant, which has higher risk of leakage because of its working pressure higher than that of other refriger-
ants. Therefore, to enhance airtightness and intensity, flare cutting dimension of copper pipe for R410A has been speci-
fied separately from the dimensions for other refrigerants as shown below. The dimension B of flare nut for R410A also
has partly been changed to increase intensity as shown below. Set copper pipe correctly referring to copper pipe flaring
imensions for elo. or an the imension changes.
Use torq ue wrench corresponding to each dimension.
Dimension A
Dimension B