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Installation and Maintenance
3.2.4 Adjusting of the unit level
(1) Check to ensure that the foundation is flat, taking
into account the maximum foundation gradient.
(2) The unit should be installed that the drainage side
is slightly (0mm~5mm) lower than other sides for
adequate drainage.
3.2.5 Installing the duct
Make sure the external static pressure of the unit is
within the range.
Connect the duct and intake-side flange.
Connect the duct and outlet-side flange.
The connection of indoor unit and air duct must be
well sealed and kept warm with insulation material.
<Example>
CAUTION
Canvas duct
Horizon
Service mouth
Air inlet
(with filter)
（600mm·600mm）
Air-outlet
The valve for the amount of air
Insulation material
Outside air
(through
the filter)
Static pressure
box
Canvas duct
Static pressure
box
The valve for
the amount of air
(3) After the adjustment, tighten the nuts and swear the
thread locker on the suspension to prevent the nuts
from loosening.
(1) During the installation, please cover the unit with the
plastic cloth to keep it clean.
(2) Make sure that the unit is installed level by using a
level or a plastic tube filled with water in instead of a
level, adjust the top surface of the unit to the surface
of the water at both ends of the plastic tube and
adjust the unit horizontally.(one thing to watch out for
in particular is if it is installed so that the slope is not
in the direction of the drain piping, as this might
cause leaking.)
CAUTION
Fig. 3.7
5m
m
●
●
●
●
4. Refrigerant Pipe
Use the refrigerant according to outdoor nameplate.
When carrying on the leakage check and test, do not
mix in the oxygen, the acetylene and flammable and
the virulent gas, for these gases are quite dangerous,
and may possibly cause explosion. It is suggested
that the nitrogen be used to perform these experiments.
4.1 Pipe Material
(1) Prepare the copper pipe on the spot.
(2) Choose dustless, non-humid, clean copper pipe.
Before installing the pipe, use nitrogen or dry air to
blow away the tube dust and impurity.
(3) Choose the copper pipe according to Fig. 4.2.
4.2 Connection of the Pipe
(1) The connection positions of the pipe are shown in
Fig. 4.1 and Fig. 4.2.
Fig. 4.2 The pipe diameter
DANGER
(unit:mm)
Model
(Btu/h)
Gas Pipe
Liquid Pipe
9K
φ9.52
φ6.35
24K
φ15.88
φ9.52
Fig. 4.1 The connection positions of the pipe
Ref. gas pipe
Ref. liquid pipe
Drain pipe
166
129
220
97
86
35
NOTE:
If the diameter of connection pipe does not match the port
size of the outdoor unit, a different-diameter joint can be
used instead.
14
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