Samsung AM080JXVHGH/EU, Installation Manual

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36
Refrigerant pipe installation
• When installing, make sure there is no leakage . When collecting the refrigerant, stop the compressor first
before removing the connection pipe . If the refrigerant pipe is not properly connected and the compressor
works with the service valve open, the pipe inhales the air and it makes the pressure inside of the
refrigerant cycle abnormally high which may lead to explosion and injury .
WARNING
Refrigerant pipe work
X f The length of refrigerant pipe should be as short as possible and the height difference between an indoor and
outdoor unit should be minimized .
X f Piping work must be done within allowable piping length, height difference, and the allowable length after
branching .
X f The pressure of the R-410A is high . Use only certified refrigerant pipe and follow the installation method .
X f After installing the pipes, calculate the total length of the pipe to check if additional refrigerant is needed . When
you need to charge the additional refrigerant, make sure to use R-410A refrigerant .
X f Use clean refrigerant pipe and there shouldn’t be any harmful ion, oxide, dust, iron content or moisture inside pipe .
X f Use tools and accessories that fit on R-410A only .
Tool Installation process/purpose Compatibility with conventional tool
Pipe cutter
Refrigerant pipe
installation
Pipe cutting
Compatible
Flaring tool Pipe flaring
Refrigerant
machine oil
Apply refrigerant
oil on flared part
Exclusive ether oil, ester oil, alkali benzene oil or synthetic oil
Torque wrench
Connect flare nut
with pipe
Compatible
Pipe bender Pipe bending
Nitrogen gas
Air tightness test
Prevent oxidation
within the pipe
Welder Pipe welding
Manifold gage Air tightness
test ~ additional
refrigerant
charging
Vacuuming,
charging
refrigerant
and checking
operation
Need exclusive one to prevent mixture of R-22 refrigerant oil use
and also the measurement is not available due to high pressure
Refrigerant
charging hose
Need exclusive one since there is risk of refrigerant leakage or
inflow of impurities
Vacuum pump Pipe drying
Compatible (Use products which contain the check valve to
prevent the oil from flowing backward into the outdoor unit .)
Use the one that can be vacuumed up to -100 .7kpa(5Torr) .
Scale for
refrigerant
charging
Refrigerant charging Compatible
Gas leak detector Gas leak test
Need exclusive one
(Ones used for R-134a is compatible)
Flare nut
Must use the flare nut equipped with the product . Refrigerant leakage may occur when the conventional
flare nut for R-22 is used .
DVM S HE_IM_DB68-05461A-08_EN.indd 36 2017-03-24 오후 1:38:20