18
Installation procedure
B. Leakage test
C. Evacuation
1. The outdoor unit has been executed the leakage test in the factory. The pipe should be
H[HFXWHGOHDNDJHWHVWLQGLYLGXDOO\DQGIRUELGGHQWRWHVWDIWHUFRQQHFWLQJZLWKVWRSYDOYH
5HIHUWRWKHEHORZ¿JXUHWRFKDUJHWKHQLWURJHQLQWRWKHXQLWWRWDNHDWHVW1HYHUXVHWKH
FKORULQR[\JHQÀDPPDEOHJDVLQWKHOHDNDJHWHVW$SSO\SUHVVXUHERWKRQWKHJDVSLSHDQG
the liquid pipe.
3. Apply the pressure step by step to the target pressure.
D$SSO\WKHSUHVVXUHWR03DIRUPRUHWKDQPLQXWHVFRQ¿UPLISUHVVXUHJRHVGRZQ
E$SSO\WKHSUHVVXUHWR03DIRUPRUHWKDQPLQXWHVFRQ¿UPLISUHVVXUHJRHVGRZQ
F$SSO\WKHSUHVVXUHWRWKHWDUJHWSUHVVXUH03DUHFRUGWKHWHPSDQGWKHSUHVVXUH
G/HDYHLWDW03DIRURYHUGD\LISUHVVXUHGRHVQRWJRGRZQWKHWHVWLVSDVVHG
Meanwhile, when the temp. changes for 1degree, pressure will change 0.01MPa as well.
Correct the pressure.
e. After confirmation of a~d, if pressure goes down, there is leakage. Check the brazing
position, flared position by laying on the soap. modify the leakage point and take another
leakage test.
$IWHUOHDNDJHWHVWPXVWH[HFXWHWKHHYDFXDWLRQ
nitrogen
Hi handle
gauge manifold
Hi
to indoor
Lo
Lo handle
(YDFXWHDWWKHFKHFNYDOYHRIOLTXLGVWRSYDOYHDQGERWKVLGHVRIWKHJDVVWRSYDOYH7KHRLO
HTXDOL]DWLRQSLSHDOVRPXVWEHYDFXXPH[HFXWHGDWWKHRLOHTXDOL]DWLRQSLSHFKHFNYDOYH
UHVSHFWLYHO\
Operation procedure:
L
e
a
ka
g
e
t
e
st
p
a
sse
d
/HDYHLWIRURYHU
KRXUYDFXXPSRLQWHU
does not arise.
After reaching -100.7KPa or
OHVVJOHW
WKHYDFXXPSXPSUXQQLQJ
FRQWLQXRXVO\IRURYHUKRXU
C
h
a
rg
e
re
fri
g
e
ra
n
t
(YD
FX
DW
LR
Q
EH
JL
QV
&
KH
FN
YD
FX
XP
(YD
FX
DW
LR
Q
HQ
GV
,IYDFXXPSRLQWHUDULVHVLWVKRZVWKHUHLVZDWHURUOHDNDJHLQWKH
V\VWHPSOHDVHFKHFNDQGPRGLI\LWDQGWKHQHYDFXDWHDJDLQ
