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3. Fresh air intake amount & static pressure characteristics
1 PLA-A12 · A18 · A24 · A30BA
Multifunction casement + High efficiency filter
50(20)
0
-50(-20)
-100(-40)
-150(-60)
-200(-80)
0
1
2
50
Taking air into the unit
50(20)
0
-50(-20)
-100(-40)
-150(-60)
-200(-80)
0
1
2
50
2 PLA-A36 · A42BA
Multifunction casement + Standard filter
50(20)
0
-50(-20)
-100(-40)
-150(-60)
-200(-80)
0
2
50
100
Taking air into the unit
50(20)
0
-50(-20)
-100(-40)
-150(-60)
-200(-80)
0
2
50
100
2 - inlet
1 - inlet
3
4
5
100
150
200
Air flow rate
3
4
5
100
150
200
Air flow rate
2 - inlet
1 - inlet
4
6
8
150
200
250
Air flow rate
4
6
8
150
200
250
Air flow rate
Multifunction casement + Standard filter
50(20)
0
-50(-20)
-100(-40)
-150(-60)
-200(-80)
6[CMM]
0
1
[CFM]
50
Duct characteristics
Curve in the
at site
1
graphs
0
Q
2
Q
3
6[CMM]
[CFM]
Q
Qa
Multifunction casement + High efficiency filter
50(20)
0
-50(-20)
-100(-40)
-150(-60)
-200(-80)
[CMM]
0
2
[CFM]
50
[CMM]
[CFM]
2 - inlet
1 - inlet
2
3
4
100
150
Q ... Designed amount of fresh air intake
A ... Static pressure loss of fresh air
intake duct system with air flow
amount Q
B ... Forced static pressure at air condi-
tioner inlet with air flow amount Q
C ... Static pressure of booster fan with
air flow amount Q <Pa(in.W.G.o10
D ... Static pressure loss increase amount
of fresh air intake dust system for air
flow amount Q
E ... Static pressure of indoor unit with air
flow amount Q
Qa ... Estimated amount of fresh air
intake without D
2 - inlet
1 - inlet
4
6
100
150
200
250
Air flow rate
6[CMM]
5
200
[CFM]
<CMM(CFM)>
<Pa(in.W.G.o10
-2
)>
-2
<Pa(in.W.G.o10
)>
-2
)>
-2
<Pa(in.W.G.o10
)>
<Pa(in.W.G.o10
-2
)>
<CMM(CFM)>
8
[CMM]
[CFM]
73
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