Installation and Maintenance
20
Only after all the checking points have been checked
·
the unit can be operated.
(A) Check and make sure that the resistance of the
terminal to ground is more than 2 M , otherwise, you
Ω
cannot operate the unit before the electricity leakage
point is found and repaired.
(B) Check and make sure that the stop valve has been
opened before operating the unit.
The trial should be carried out according to the
installation and maintenance manual.
WARNING
10.2 Leak Test
Leak test all joints and valves of the indoor unit and
outdoor unit with liquid soap. Checking of the orifice
cap shouldn't be less than 30 seconds. Clean the
liquid soap after the test in case that the color of
the copper tube may change for erode.
10.3 Tidying Up the Tubing
If the leak test turns out to be all right, preserve heat
the joints of the indoor unit.
Straighten the connecting tubes and make them
flush and fixed to the wall. Seal the space around
the hole in the wall through which the tubes come
out with gypsum.
10.4 Test Run
Make sure the power and unit run well then plug in.
Turn on the appliance and adjust it to Cooling,
dehumidifying and Heating mode according to the
room temperature. Check if the appliance can run
well.
Installation of the appliance is generally finished after
the above operations are done. If you still have any
trouble, please contact local technical service center
of our company for further information.
Narrow tube
Hex wrench
Wide tube
Service valve
Bonnet of service valve
Bonnet of narrow valve
Bonnet of wide valve
Indoor unit
Outdoor unit
Manifold
valve
Pressure
gauge
Vacuum pump
Fig. 10.1
Fig. 10.2
10. Air purging and test run
Air and moisture remaining in the refrigerant system
have undesirable effects.
Therefore, they must be purged completely following
the steps.
10.1 Air Purging with a Vacuum Pump
(See
Fig. 10.1, Fig. 10.2)
(1) Check that each tube (both narrow and wide tubes
between the indoor and outdoor units) have been
properly connected and all wiring for the test run has
been completed. Note that both narrow and wide tube
valves on the outdoor unit are kept closed at this stage.
(2) Using an adjustable wrench or box wrench, remove
the bonnet from the service valve.
(3) Connect a vacuum pump and service valve together
tightly.
(4) Turn on the vacuum pump and till the pressure is
-4
lower than 15 Pa(or 1.5
×
10 bar) for 5 minutes.
(5) With the vacuum pump still running, disconnect
tube of vacuum pump from the service valve. Then stop
the vacuum pump.
(6) Replace the bonnet on the service valve and fasten it
securely with an adjustable wrench or box wrench.
(7) Using an adjustable wrench or box wrench, remove
the bonnet of both narrow and wide valve.
(8) With the hex wrench, turn the wide and narrow tube
valves stem counter clockwise to fully open the valves.
(9) Replace the bonnets on the wide and narrow valves
and fasten it securely with an adjustable wrench or box
wrench.
AUV-18HR4SSA1
AUV-24HR4SFA1
AUV-36HR6SDB1
AUV-48HR6SEC1
AUV-60HR6SPC1
RPFC-2.0UNZ1NH
RPFC-3.0UNZ1NH
RPFC-4.0UNZ1NH
RPFC-6.0UNZ1NH
RPFC-6.5UNZ1NH
YFGN18BZNRZUH1
YFGN24BZNRZUH1
YFGN36BZMRZUH1
YFGN48BZMRZUH1
YFGN55BZMRZUH1
RAS-2.0UNZGNH1
RAS-3.0UNZGNH1
RAS-4.0UNZGMH1
RAS-6.0UNZGMH1
RAS-6.5UNZGMH1
●
Blowing out the surviwal heating air
When
stoping
the
air
conditioner
in
normal
operation
,
the
fan
motor
would
run
with
low
speed
for
a
while
to
blow
out
the
residual
heating
air
.
