User Manual

E-15
Performing Leak Test & Insulation
Insulation
C
D
After checking for gas leaks in the system, insulate the pipe, hose and cables.
Then place the indoor unit on the installation plate.
1
To avoid condensation problems, place heat-resistant polyethylene foam
separately around each refrigerant pipe in the lower part of the indoor unit.
2
Wrap the refrigerant pipe and the drain hose in the rear of the indoor unit with
the absorbent pad.
 Wind the pipe and hose three times to the end of the indoor unit with the
absorbent pad. (2 0mm interval)
3
Wind the pipe, assembly cable and drain hose with insulation tape.
4
Place the bundle (the pipe, assembly cable and drain hose) in the lower part of
the indoor unit carefully so it doesn’t project from the rear of the indoor unit.
5
Hook the indoor unit to the installation plate and move the unit to the right
and left until it is securely in place.
6
Wrap the rest of the pipe with vinyl tape.
7
Attach the pipe to the wall using clamps (optional).
Installation plate
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.
Leak test
Discharge all the nitrogen to create a vacuum and charge
the system.
CAUTION
AVXWV@@_IM_E_29819-1_4.14.09.indd 15 2009-4-14 10:15:40