20
Installation Procedures
1.Installation of the air blowing pipe:
With a square blast pipe, the bore shouldn’t be less than the sizes
of air outlet pipe.
2.Installation of the air return pipe:
Connect one side of the air return pipes to the air return port of the
indoor units with rivets, with the other side connected to air return shutter,
as shown in Fig. 1.
3. Heat Preservation of Blast Pipes:
Heat preservation lays should be provided for air
blowing & return pipes. Paste glue nails on the
blast pipes and attach thermo wool,which covered
by a layer of silver paper, fix it with glue nail
cover, and then seal the joint with silver paper.
Concealed indoor units should be designed with air return plenum, as shown in Fig. 2 & Fig. 3.
$
installation top side
"
0.5m or
"
5m
ceiling
air supply
air outlet pipe
machine
air return
air return plenum
Fig.2
zoom in for A
air outlet grid
air
supply
no barrier within 1m
machine
air return
air return plenum
Fig.3
The air blowing and return pipes should be equipped with an iron support fixed on the roof precoated plate.
The joints at air pipes should be sealed with glue. It is recommended to keep the distance from the edge
of air return plenum to the wall to be over 150mm.
The gap between the air outlet port on the flue and the air outlet port on the air conditioner depends on
the actual installation sizes of flues and the operating static pressure terminals. The schematic diagram
of the long and short flues is shown in the following figure. When connecting the short flues, use the low
static pressure terminal in white and keep the distance between the air outlet port of the flue and the air
outlet port of the air conditioner to be less than 0.5m. When connecting the long flues, use the high static
pressure terminal in red and keep the distance between the air outlet port of the flue and the air outlet
port of the air conditioner to be within 5m.
The drainpipe for condensed water should keep a gradient of 1%. The condensed water pipe should be
heat-preserved with a sleeve.
Hang the unit as shown in Fig. 5.
M8 wide expansion bolt
M8 hanging stud
M8 wide locking washer
M8 nut
unit
slingdog
drainpipe
air return pipe
air return shutter
air outlet port
air outlet pipe
transient
air pipe
Fig.4 Fig.5
Installing the hoisting studs:
Based on the normative installation for different building structure, install the machine with 4 M8 or M10
hoisting studs according to the outline drawing. When the height of the hoisting stud exceeds 0.9m, M10
studs should be used. The level meter can be used for the horizontal installation.
Use the level meter to set the levelness of the machine to be within 5mm.
Installation of Blast Pipe of Indoor Units:
Fig.2
galvanizing plate
thermo wool
glue nail
silver
paper
glue nail cove
rubber belt
air return shutter
air return pipe
indoor unit
revit
Fig.1
connection of oil return pipe
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