Samsung AJTNLDCH Series, Руководство по установке

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11
English
Installation Pr
oc
edur
e
Step 7 Connecting the assembly
pipes to the refrigerant pipes
There are two refrigerant pipes of different diameters :
• A smaller one for the liquid refrigerant
• A larger one for the gas refrigerant
• The inside of copper pipe must be clean & has no
dust
1 Remove the pinch pipes and connect the
assembly pipes. First tighten the flare nuts
manually and then with a torque wrench and
a spanner applying the following torque.
Outer diameter (D) Torque (lbf·ft)
Ø1/4 inch 10 to 13
Ø3/8 inch 25 to 30
Ø1/2 inch 35 to 44
Ø5/8 inch 49 to 59
NOTE
• If the pipes must be shortened refer to page 10 ,
Step 6 Cutting and flaring the pipes
2 Use insulation that is thick enough to cover
the refrigerant pipe to prevent condensate
water on the outside of pipe and to ensure
system efficiency. Condensation can drip onto
the floor causing property damage or a slip
hazard.
3 Cut off any excess foam insulation.
4 Make sure that the bent sections of pipe are
not kinked or cracked.
5 It is necessary to double the insulation
thickness(10mm or more) to prevent
condensation even on the insulator when if
the installed area is warm and humid.
6 Do not use joints or extensions for the pipes
that connect the indoor and outdoor unit.
Gas refrigerant port
Drain hose
connection port
Liquid refrigerant port
NOTE
• The designs and shape are subject to change
according to the model.
Step 8 Performing the gas leak test
Pressure check the refrigerant system using high pressure
nitrogen in order to detect basic refrigerant leaks.
Before performing the vacuum process and releasing the
factory R-410A charge into the refrigerant pipes, it is the
responsibility of the installer to pressurize the whole system
with nitrogen (using a cylinder with pressure reducer) at a
pressure above 580.2 psi (gauge).
Refrigerant oil
Torque wrench
Spanner
Flare nut Union