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DC Inverter U-match Series Floor Ceiling Type Unit
4.3.7Liquid Pipe and Drain Pipe
If the outdoor unit is installed lower than
the indoor unit (See Fig.18)
(1). A drain pipe should be above ground
and the end of the pipe does not
dip into water. All pipes must be
restrained to the wall by saddles.
(2). Taping pipes must be done from
bottom to top.
(3). All pipes are bound together by tape
and restrained to wall by saddles.
If the outdoor unit is installed higher than
the indoor unit
(1). Taping should be done from lower to
the upper part.
(2). A l l p i p e s a r e b o u n d a n d t a p e d
together and also should be trapped
to prevent water from returning to the
room (See Fig.19)
(3). Restraint all pipes to the wall with
saddles.
4.4 Vacuum and Gas Leakage Inspection
Do not purge the air with refrigerants but use a vacuum pump to vacuum the installation! There is
no extra refrigerant in the outdoor unit for air purging!
4.4.1 Vacuum
(1). Remove the caps of the liquid valve, gas valve and also the service port.
(2). Connect the hose at the low pressure side of the manifold valve assembly to the service
port of the unit's gas valve, and meanwhile the gas and liquid valves should be kept closed
in case of refrigerant leak.
(3). Connect the hose used for evacuation to the vacuum pump.
(4). Open the switch at the lower pressure side of the manifold valve assembly and start the
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CAUTION!
15
Sealed
Saddle
Drain
pipe
Fig.18
Trap
Fig.19
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