Installation and Maintenance
19
Only after all the check points have been verified
the unit can be operated.
(A) Ensure that the resistance of the terminal to ground
is more than 2M , otherwise, you cannot operate
the unit before the electricity leakage point is found
and repaired.
(B) Ensure that the stop valve is open before operating
the unit.
·
Ω
The trial run should be carried out according to the
installation and maintenance manual.
WARNING
10.2 Leak Test
Perform leak test
on all
joints and valves of the
indoor unit and outdoor unit with liquid soap.
Checking of the orifice cap should not be less
than 30 seconds. Clean the liquid soap after the
test to avoid change in color due to corrosion.
10.3 Cleaning the Piping
If the leak test turns out to be all right, preserve the
heat joints of the indoor unit.
Straighten the connecting pipes clean them
and fix them to the wall. Seal the space around
10.4 Test Run
Make sure the power and unit are proper and
Turn on the appliance and adjust it to cooling,
dehumidifying and heating mode according to the
room temperature. Check if the appliance can run
smoothly/as expected.
Installation of the appliance is generally complete 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 pipe
Hex wrench
Wide pipe
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. Vacuuming and Test Run
Air and moisture remaining in the refrigerant system
have undesirable effects.
Therefore, they must be removed completely with the
following steps.
10.1 Vacuuming with a Vacuum Pump
(See
Fig 10.1, Fig 10.2)
(1) Check that each pipe (both narrow and wide pipes
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 pipe valves on the outdoor unit are kept closed
(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 with the pressure is
lower than 15Pa (or 1.5
×
10 bar) for 5 minutes.
-4
(5) With the vacuum pump still running, disconnect
pipe of vacuum pump from the service valve and
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 pipe
valve stem counter clockwise to fully open the
(9) Replace the bonnets on the wide and narrow valves
and fasten it securely with an adjustable wrench or
box wrench.
at this stage.
valves.
the hole in the wall through which the pipes come
out of the concrete.
then plug in.
Summary of Contents for RPFC-2.0TNE1NH
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