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Fig.6-3
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 test static pressure
is 50Pa.
The static pressure in below table is the optimal static pressure
range which means the airflow, noise, and dehumidification are
all in the best state.
50hz
12.5kW 14kW 20kW 25kW 28kW
90
̚
185Pa
110
̚
225Pa
8 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
maintenance of motor
˖
0 1 2
F
3
E
4
D
5
C
6
B
7
A
89
Q(m
3
/h)
240
260
280
300
220
200
180
160
140
120
100
80
60
40
20
0
P(Pa)
12/14KW
Low speed
Medium speed
High speed
1400
2600 2800
1600 1800 2000 2200 2400
3000
1200
1000
800
600
240
260
280
300
2000
1500
1250
Q(m
3
/h)
5000 5500 6000
220
200
180
160
140
120
100
80
60
40
20
0
2500 3000 3500 4000 4500
P(Pa)
20KW
Low speed
Medium speed
High speed
240
260
280
300
2000
Q(m
3
/h)
5000 5500 6000
220
200
180
160
140
120
100
80
60
40
20
0
2500 3000 3500 4000 4500
1500
1250
P(Pa)
25/28KW
Low speed
Medium speed
High speed
Installation manual
Duct 100% fresh air
11