17
English
Ins
tallation Pr
oc
edur
e
4
Open the valve of the low pressure side(A) of
manifold gauge anticlockwise.
A(Gas)
B(liquid)
Outdoor Unit
A
Vacuum
Pump
5
Purge the air from the system using vacuum pump
for about 30 minutes.
(pump capacity : more than 140
ℓ
/min)
• Close the valve of the low pressure side of
manifold gauge clockwise.
• Turn off the vacuum pump.
• Make sure that pressure gauge displays -0.1 MPa
(-76 cmHg) for 10 minutes after close the valve.
• Remove the hose of the low pressure side of
manifold gauge.
CAUTION
• Connect the indoor and outdoor units using pipes
with flared connections (not supplied). For the lines,
use insulated, unwelded, degreased and deoxidized
copper pipe, (Cu DHP type to ISO 1337 or UNI EN
12735-1), suitable for operating pressures of at least
4200 kPa and for a burst pressure of at least 20700
kPa. Copper pipe for hydro-sanitary applications is
completely unsuitable.
• For sizing and limits (height difference, line length,
max. bends, refrigerant charge, etc.) see “Connecting
refrigerant pipe section”.
Step 8 Adding refrigerant (R-410A)
• The outdoor unit is loaded with sufficient refrigerant
for the standard piping. Thus, refrigerant must be
added if the piping is lengthened. This operation
can only be performed by a qualified refrigeration
specialist. To determine the quantity of refrigerant
charge, see
Calculating the quantity of refrigerant to
add
on page 18.
1
Check if the stop valve is closed completely.
2
Charge the refrigerant through the service port of the
liquid stop valve.
NOTE
• Do not charge the refrigerant through the service
port of the gas stop valve.
3
If you have any difficulty charging the refrigerant as
described in the steps above, take the following steps:
a
Open the liquid stop valve and gas stop valve.
b
Operate the air conditioner by pressing the K2
key on the outdoor unit PCB.
c
After about 30 minutes, charge the refrigerant
through the service port of the gas stop valve.
360_AC_Outdoor_AU_Eng_EN.indb 17
2016-09-20 오후 8:00:33
