Cover the pipe before connecting to keep rubbish, dust or other
impurities out.
As there is no dust filter on the indoor unit, other places which
are easy to maintaining such as inhalant duct should be
installed with dust filter. (Without dust filter, dust adherent on
the air heat exchanger may cause failure and water-leak.
Key points of duct connection
7. DUCT DESIGN
Fig.6-1
Heating capacity and cooling capacity are tested under the
standard allowable min. static pressure; the 12.5/14 test static
pressure is 50Pa,the 200/250/280 test static pressure is 62Pa.
The static pressure refer to Table.15-2
.
Installation of fan duct
6. HIGH STATIC PRESSURE TYP
Fig.6-2
Connect the fan duct as the following. (Refer to Fig.7-2 ) (Air intake
side)
Connecting air duct and intake flange
˄
Provided at field
˅
Use aluminum adhesive tapes etc. to seal the connecting¬
parts of the intake flange and fan duct, for avoiding air leakage.
(Air blowout side)
Connecting air duct and blowout flange
˄
Attached by main body
˅
Use aluminum adhesive tapes etc. to seal the connecting parts
of the blowout flange and fan duct, for avoiding air leakage.
Use the bolts (Accessory 8) to connect the blowout flange with the
units.
Fig.7-1
Air outlet
Air inlet
Canvas tie-in
Canvas tie-in
Air dust filter
checking orifice
Isolation booth
Isolation booth
Outer wall
Heat insulated components
˄
Provided at field
˅
Heat insulated components
˄
Provided at field
˅
Intake flange
˄
Provided at field
˅
Intake flange
˄
Provided at field
˅
Outer wall
Canvas fan duct
(Provided at field)
Cover cap
(Provided at field)
Main body
Slope down
Air blowout side
Air intake side
Fig.7-2
NOTE
Other assemblies should be prepared on spot except air
conditioner main body.
The air filter is not the standard accessory, but please must be
installed air filter in the air intake side of the fan duct system. Use
the dust arrest efficiency (use gravimetric method) with above
50%.
Make sure the air intake side of fan duct slope down. Then it can
prevent water logging.
Select the fan duct, and make the intake side can intake the
outside air.
Otherwise, the units can not run normally.
Please heat insulating the fan duct for avoiding condensation.
(Material: glass wool or polyethylene foamed, thickness: 25mm)
If use the mental fan duct to make through the mental iron wire,
iron net or mental panel of the wooden building, then it must do
the (electronic) insulating for the fan duct and the wall.
maintenance of motor
˖
Q(m
3
/h)
P(Pa)
12.5/14KW
P(Pa)
0 1 2
F
3
E
4
D
5
C
6
B
7
A
89
0 1 2
F
3
E
4
D
5
C
6
B
7
A
89
/RZVSHHG
0HGLXPVSHHG
+LJKVSHHG
/RZVSHHG
0HGLXPVSHHG
+LJKVSHHG
20/25/28KW
Q(m
3
/h)
Installation manual
11
Duct 100% fresh air
