20
2 - inlet
1 - inlet
2 - inlet
1 - inlet
2 - inlet
1 - inlet
-200(-80)
-150(-60)
-100(-40)
-50(-20)
0
50(20)
0
1
2
50
100
150
200
[CFM]
3
4
5
6[CMM]
2 - inlet
1 - inlet
Airflow rate
Airflow rate
Static pressure [Pa(in.W.G.
%
10
-2
)]
-200(-80)
-150(-60)
-100(-40)
-50(-20)
0
50(20)
0
1
2
50
100
150
200
[CFM]
3
4
5
6[CMM]
Static pressure [Pa(in.W.G.
%
10
-2
)]
-200(-80)
-150(-60)
-100(-40)
-50(-20)
0
50(20)
0
1
2
50
100
150
200
[CFM]
3
4
5
6[CMM]
Airflow rate
Static pressure [Pa(in.W.G.
%
10
-2
)]
-200(-80)
-150(-60)
-100(-40)
-50(-20)
0
50(20)
0
2
50
100
150
200
250
[CFM]
4
8
[CMM]
6
Airflow rate
Static pressure [Pa(in.W.G.
%
10
-2
)]
-200(-80)
-150(-60)
-100(-40)
-50(-20)
0
0
50(20)
0
2
50
100
150
200
250
[CFM]
4
8
[CMM]
6
Airflow rate
Static pressure [Pa(in.W.G.
%
10
-2
)]
-200(-80)
-150(-60)
-100(-40)
-50(-20)
50(20)
0
2
50
100
150
200
250
[CFM]
4
8
[CMM]
6
Airflow rate
Static pressure [Pa(in.W.G.
%
10
-2
)]
2
PLA-A36BA
Multifunction ca Standard filter
Multifunction ca High efficiency filter
Taking air into the unit
Taking air into the unit
3. Fresh air intake amount & static pressure characteristics
1
PLA-A18BA PLA-A30BA
Multifunction ca High efficiency filter
Multifunction ca Standard filter
Q
0
B
A
C
1
Curve in the
graphs
Duct characteristics
at site
Q
A
EC
2
Q
Qa
AD
3
Q…Designed amount of fresh air intake
<CMM(CFM)>
A…Static pressure loss of fresh air intake
duct system with airflow amount Q
<Pa(in.W.G.
o
10
-2
)>
B…Forced static pressure at air condi-
tioner inlet with airflow amount Q
<Pa(in.W.G.
o
10
-2
)>
C…Static pressure of booster fan with air-
flow amount Q
<Pa(in.W.G.
o
10
-2
)>
D…Static pressure loss increase amount
of fresh air intake duct system for air-
flow amount Q
<Pa(in.W.G.
o
10
-2
)>
E…Static pressure of indoor unit with air-
flow amount Q
<Pa(in.W.G.
o
10
-2
)>
Qa…Estimated amount of fresh air intake
without D
<CMM(CFM)>
How to read curves