1. Install the filter at the main body grille
in case the storey height is low, and at
the main body of the indoor unit in case
the storey height is high.
2. It cleans conveniently at the time
of installing/uninstalling the filter.
3. The button structure is easy to
install and uninstall.
1. For purpose ofair inlet.
2. Must adopt fire-resistant
materials. (Those materials other
than specified by Midea shall not
be applied)
3. The heatinsulation material must
be glass wool.
1. For purpose ofair outlet.
2. Must adopt fire-resistant
materials. (Those materials other
than specified by Midea shall not
be applied)
3. The heatinsulation material must
be glass wool.
11. Install the unit at the air inlet so
that the air flows smoothly and the
noise is lower.
2. The noise value varies with the
length.
3. The hose joint should be bent lest
detachment of the pipe.
1. Install the unitat a diffuser so
that the air flowssmoothly and the
noise is lower.
2. Select 1BY2 or1BY3 according
to the quantity ofthe diffusers.
3. The diffuserpipes should
preferably have the samelength
after branching, and theminimum
length of the ventilationpipes is 5m.
1. Fixed model thatdiffuses air at
a 360 angle.
2. The outlinesize should increase
when the air volumeis over
350CMH. (for above 303),i.e.,
when about 9 diffusers are
required, the outline sizeshould
increase.
3. The diffuserpipes should
preferably have the samelength
after branching, and theminimum
length of the ventilationpipes is 5m.
Material name
Characteristics,
advantages and
other contents
1
2
3
4
5
6
7
9
12
8
10
11
Material name
Characteristics,
advantages and
other contents
1. Fixed model that diffuses air ata
360 angle.
2. The outline size should increase
when the air volume is over
350CMH. (for above 303), i.e., When
about 9 diffusers are required, the
outline size should increase.
3. Proper air speed: For air speed of
over 2-3.5m/s, select other diffusers
(with greater noise).
4. Install the diffuser pipe if it is
necessary to install the model of
over 3.5m/s.
5. For purpose of cooling-only model
1 The lengthwiseadjustable model
which diffuses airat a 360 angle.
2. With the changeof the cooling/
heating air flow,the horizontal and
vertical distance of thefan can be
adjusted (applicable to department
store and exhibition hallwhere the
decorative effect isessential).
1. Low noise comparedwith other
air outlets. Applicableto tall
buildings that require along
distance of air conditioning.
2. Select the ventilationpipe
connection calibre according tothe
distance and the airspeed.
3. Applicable tostorey height of over
5m (for design oftall storeys such
as temple, consult Midea).
1. The fan is the adjustable type
which can change direction of air
flow. It isused for deluxe decoration.
2. The outline size should increase
when the air volume is over
450CMH. (3 or4SOLT) When about
6 diffusers are required, theoutline
size should increase.
3. If the proper air speed is 2.5 5m/s
and actual airspeed reaches over
5m/s, it is necessary to choose other
diffusers (with higher noise values).
1. Low noise comparedwith other
air outlets. Applicableto tall
buildings that require along distance
of air conditioning.
2. Select the ventilationpipe
connection calibre according tothe
distance and the airspeed.
3. Applicable tostorey height of over
5m (for design oftall storeys such
as temple, consult Midea).
1. Flanges and pipelinesconnected
to the ventilation pipes.
2. When the noisepipe is connected
with the hose, theventilation pipe
tape must be applied(otherwise,
with only adhesive tape,the
adhesion will be weakeneddue to
change of temperature).
1. It is used to prevent glass wool
leak and seal the gas at the time of
connecting the flanges and
pipelines of the ventilation pipes.
2. Entwine for over 3 circles.
3. Use ventilation pipe-specific
tapes (instead of ordinary adhesive
tapes).
In order to ensure the installation
quality and durability, it is necessary
to use auxiliary materials of standard
specifications provided by Midea
Electronics and the auxiliary
products of the specified
manufacturers.
Auxiliary materials
Air inlet woodengrille
Filter
Hose (for absorbing noise)
Hose (for general purpose)
Air inlet noisepipe
Air outlet noisepipe
Distributor
Aluminium adhesive
tape
Duct wrapping tape
Air outlet woodengrille
Linear diffuser
Round
Rectangular
Air outlet
Air outlet
Air outlet
Rectangular Air outlet
1. Install the unit at the air outlet so
that the air flows smoothly and the
noise is lower.
2. The noise value varies with the
length.
3. The hose joint should be bent lest
detachment of the pipe.
12. METHODS OF CONFIGURING AND SELECTING INSTALLATION
10
Installation manual
Installation manual
Steel bar
Embedded bolt
(Pipe pendant embedded bolt)
Old concrete roughcast
Suspended bolt
Pendant bolt Supportive
angle steel
Steel beam and girder structure
4.3 Suspending the indoor unit
Use a hoisting device to hoist the indoor unit, align it with
the installation screw, adjust the horizontality and then tighten it.
Unit body Pendant bolt
Not less than 30
Prepare the assemblies other than air conditioner gas on the site.
Inspection
orifice
Canvas adapter Canvas adapter
Noise suppression room
Noise
suppression room
Air outlet Air inlet
Air filter
4.4 Design and connection of duct
1. The duct design must comply with the national heating air
conditioner pipeline design specifications.
2. The accessories and materials must be produced by
professional manufacturers.
3. In order to prevent air flow shorting, do not keep the air inlet
pipe near the air outlet pipe.
4. Install a filter at an easy-to-maintain place such as intake pipe.
(Otherwise, the duct will gather on the air heat exchanger and
lead to
fault and water leak of the air conditioner.)
5. In order to suppress noise effectively, install noise suppression
and sound insulation devices, especially in the noise-sensitive
spaces
such as meeting rooms.
6. For connection of the flange plane, use non-flammable canvas
adapter to prevent transmission of vibration. For its size, see the
indoor
unit outline diagram. Use M6X20 screws (configured on site)
for connection.
7. All pipelines must be connected closely and soundly without
leak of air. The pipelines must be adiabatic and free from
condensation.
NOTE :
Key points of duct connection
540
540
1828
300
330
360
65
1828
214
1655
315
315
315
315
213
210
180
136 150
144
350
563
638
Air outlet duct connection screw hole location diagram
Return air duct rivet screw hole location diagram
5. INSTALLING THE OUTDOOR UNIT
5.1 Construction checkpoints
5.1.1. Installation
Check the model and name to avoid mistaken installation.
5.1.2. Refrigerant pipe
The refrigerant pipes must have the specified diameter.
Nitrogen of a certain pressure must be filled into the refrigerant pipe
before welding.
The refrigerant pipe must undergo heat insulation treatment.
After the refrigerant pipe is installed completely, the indoor unit
cannot be powered on before performing the airtight test and
creating a vacuum.
5.1.3. Airtight test
The refrigerant pipe must undergo the airtight test [with 2.94MPa
(30kgf/cm G) nitrogen].
5.1.4. Creating a vacuum
Be sure to use the vacuum pump to create a vacuum of the
connective pipe at both air side and liquid side concurrently.
5.1.5. Refrigerant replenishment
If the pipe is longer than the reference pipe, the refrigerant
replenishment quantity for each outdoor unit should be calculated
through the formula obtained according to the actual length of the
pipe.
Figure 6
Figure 7
Figure 8
Figure 9
Figure 10
Figure 11
2
Use embedded bolts, embedded pulling plugs, and
embedded stick harness
Set and use supportive angle steel.
638
