SSP-SVX001B-EN
19
Refrigerant Piping Procedures
(Outdoor Units)
W
WA
AR
RN
NIIN
NG
G
R
R--4
41
10
0A
A R
Re
effrriig
ge
erra
an
ntt u
un
nd
de
err H
Hiig
gh
he
err
P
Prre
essssu
urre
e tth
ha
an
n R
R--2
22
2!!
F
Fa
aiillu
urre
e tto
o u
usse
e p
prro
op
pe
err e
eq
qu
uiip
pm
me
en
ntt o
orr cco
om
mp
po
on
ne
en
nttss a
ass
d
de
essccrriib
be
ed
d b
be
ello
ow
w,, cco
ou
ulld
d rre
essu
ulltt iin
n e
eq
qu
uiip
pm
me
en
ntt ffa
aiilliin
ng
g
a
an
nd
d p
po
ossssiib
blly
y e
ex
xp
pllo
od
diin
ng
g,, w
wh
hiicch
h cco
ou
ulld
d rre
essu
ulltt iin
n
d
de
ea
atth
h,, sse
erriio
ou
uss iin
njju
urry
y,, o
orr e
eq
qu
uiip
pm
me
en
ntt d
da
am
ma
ag
ge
e..
T
Th
he
e u
un
niittss d
de
essccrriib
be
ed
d iin
n tth
hiiss m
ma
an
nu
ua
all u
usse
e R
R--4
41
10
0A
A
rre
effrriig
ge
erra
an
ntt w
wh
hiicch
h o
op
pe
erra
atte
ess a
att h
hiig
gh
he
err p
prre
essssu
urre
ess
tth
ha
an
n R
R--2
22
2.. U
Usse
e O
ON
NL
LY
Y R
R--4
41
10
0A
A rra
atte
ed
d sse
errv
viicce
e
e
eq
qu
uiip
pm
me
en
ntt o
orr cco
om
mp
po
on
ne
en
nttss w
wiitth
h tth
he
esse
e u
un
niittss.. F
Fo
orr
ssp
pe
ecciiffiicc h
ha
an
nd
dlliin
ng
g cco
on
ncce
errn
nss w
wiitth
h R
R--4
41
10
0A
A,, p
plle
ea
asse
e
cco
on
ntta
acctt y
yo
ou
urr llo
occa
all T
Trra
an
ne
e rre
ep
prre
esse
en
ntta
attiiv
ve
e..
W
WA
AR
RN
NIIN
NG
G
R
Re
effrriig
ge
erra
an
ntt u
un
nd
de
err H
Hiig
gh
h P
Prre
essssu
urre
e!!
F
Fa
aiillu
urre
e tto
o ffo
ollllo
ow
w iin
nssttrru
uccttiio
on
nss b
be
ello
ow
w cco
ou
ulld
d rre
essu
ulltt iin
n
a
an
n e
ex
xp
pllo
ossiio
on
n w
wh
hiicch
h cco
ou
ulld
d rre
essu
ulltt iin
n d
de
ea
atth
h o
orr
sse
erriio
ou
uss iin
njju
urry
y o
orr e
eq
qu
uiip
pm
me
en
ntt d
da
am
ma
ag
ge
e..
S
Sy
ysstte
em
m cco
on
ntta
aiin
nss rre
effrriig
ge
erra
an
ntt u
un
nd
de
err h
hiig
gh
h p
prre
essssu
urre
e..
R
Re
ecco
ov
ve
err rre
effrriig
ge
erra
an
ntt tto
o rre
elliie
ev
ve
e p
prre
essssu
urre
e b
be
effo
orre
e
o
op
pe
en
niin
ng
g tth
he
e ssy
ysstte
em
m.. S
Se
ee
e u
un
niitt n
na
am
me
ep
plla
atte
e ffo
orr
rre
effrriig
ge
erra
an
ntt tty
yp
pe
e.. D
Do
o n
no
ott u
usse
e n
no
on
n--a
ap
pp
prro
ov
ve
ed
d
rre
effrriig
ge
erra
an
nttss,, rre
effrriig
ge
erra
an
ntt ssu
ub
bssttiittu
utte
ess,, o
orr rre
effrriig
ge
erra
an
ntt
a
ad
dd
diittiiv
ve
ess..
Each unit ships with a holding charge of dry nitrogen.
The nitrogen should be removed and the entire system
evacuated (at the proper time) to avoid possible
contamination.
1. Remove the compressor service access panel.
2. Locate the liquid and suction line access valves.
Check that the piping connection stubs (
) line up properly with the holes in the unit
cabinet.
Figure 12.
Outdoor units - refrigerant piping (with dry
nitrogen)
Gas Line Gauge Port
Manifold
Gauges
Liquid Line Gauge Port
3. Install gauges to determine if the circuits are still
pressurized. If not, the charge has escaped and
should be repaired as required to obtain a leak-free
circuit. If the circuits are still pressurized, use the
gauges to slowly release the nitrogen charge to the
atmosphere and remove both seal caps from the
outdoor unit connection stubs.
N
NO
OT
TIIC
CE
E
S
Sy
ysstte
em
m C
Co
om
mp
po
on
ne
en
ntt D
Da
am
ma
ag
ge
e!!
D
Do
o n
no
ott rre
em
mo
ov
ve
e tth
he
e sse
ea
all cca
ap
pss ffrro
om
m rre
effrriig
ge
erra
an
ntt
cco
on
nn
ne
eccttiio
on
nss u
un
nttiill p
prre
ep
pa
arre
ed
d tto
o b
brra
azze
e rre
effrriig
ge
erra
an
ntt
lliin
ne
ess tto
o tth
he
e cco
on
nn
ne
eccttiio
on
nss.. E
Ex
xcce
essssiiv
ve
e e
ex
xp
po
ossu
urre
e tto
o
a
attm
mo
ossp
ph
he
erre
e ((>
> 5
5 m
miin
n..)) m
ma
ay
y a
allllo
ow
w m
mo
oiissttu
urre
e o
orr d
diirrtt
tto
o cco
on
ntta
am
miin
na
atte
e tth
he
e ssy
ysstte
em
m,, d
da
am
ma
ag
giin
ng
g v
va
allv
ve
e sse
ea
allss
a
an
nd
d cca
au
ussiin
ng
g iicce
e ffo
orrm
ma
attiio
on
n iin
n ssy
ysstte
em
m cco
om
mp
po
on
ne
en
nttss..