Samsung AC BNADCH Series, Руководство по установке, Страница: 10 / 30

10
Indoor Unit Installation
English
Instal
lation
8 Do not box in or cover the pipe connections. Make sure
that the connections are accessible for testing later in the
installation process and for future servicing.
9 Tape over the end of the pipes so that debris will not enter
the piping when it is passed through the wall. The pipes
will be insulated later in the installation process.
Step 8 Performing leak test
Leak test
LEAK TEST WITH NITROGEN (before opening valves)
In order to detect basic refrigerant leaks, before recreating
the vacuum and recirculating the R410A, it’s responsible of
installer to pressurize the whole system with nitrogen (using a
pressure regulator) at a pressure above 4.1MPa (gauge).
LEAK TEST WITH R410A (after opening valves)
Before opening valves, discharge all the nitrogen into the
system and create vacuum. After opening valves check leaks
using a leak detector for refrigerant R410A.
Test parts for the
indoor unit
CAUTION
• Discharge all the nitrogen to create a vacuum and
charge the system.
Step 9 Connecting the drain hose
1 In Step 4 you determined the exit position for the piping
bundle. If using the right, bottom, or right rear exit,
change the drain hose connection from the right to the
left so that the drain hose will lie along the inside of the
unit and exit to the right.
Drain pan outlet
Rubber cap
CAUTION
• Be careful not to puncture the plug with the
screwdriver when installing it.
2 If using the left, right, or bottom exit, pass the drain hose
through the selected knockout.
Refrigerant pipes
(assembly pipe)
Drain hose Connection hose
3 Connect a 0.63inch (15.88mm) ID extension drain hose to
the main drain hose.