Samsung AE044MXTPEH Mode D'emploi page 22

Installing the Refrigerant Pipe Work
Air tightness test
• Use tools for R-410A to prevent the inflow of foreign
substances and resist against the internal pressure.
• Do not remove the core of filling port.
• Use Nitrogen gas for air tightness test as shown in the
illustration.
4.4/6.6kW
Manifold gauge
Liquid pipe
Gas pipe
for hydro
Gas pipe
for air
9/12/16kW
Manifold gauge
Gas pipe
for hydro
Liquid
pipe
Gas pipe
for air
22
English
Apply pressure to the
liquid side pipe and
gas side pipe (when
installing outdoor
units in module)
with Nitrogen gas at
4.1MPa.
↓
Keep it for minimum
24 hours to check if
pressure drops.
↓
If the pressure drops,
check for gas leakage.
↓
Maintain 1.0MPa of
the pressure before
performing vacuum
drying and check for
further gas leakage.
CAUTION
• Perform a Nitrogen gas leak test with the service
valve of the outdoor unit closed.
• When charging the nitrogen gas, charge it from
the both (high‧low pressure) sides.
• If the pipe is filled in a short time with a highly
excessive pressure of Nitrogen gas, the pipes
may get damaged. Make sure to use a regulator
to prevent the high pressure Nitrogen gas, over
4.1MPa, from entering into the pipe.
If you apply pressure at
more than 4.1MPa, pipes
may get damaged. Apply
pressure with pressure
regulator and pay
attention to the pressure
of the nitrogen.
After applying Nitrogen
gas, check there's any
change of pressure, using
a pressure regulator.
If the pressure is changed,
apply soap water to check
for leakage and check the
pressure of the nitrogen
gas again.
After checking the first
gas leakage, maintain
1.0MPa to check for
further gas leakage.