12
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
Air flow rate
Static pressure [Pa(in.W.G.
o
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.
o
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]
Air flow rate
Static pressure [Pa(in.W.G.
o
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
Air flow rate
Static pressure [Pa(in.W.G.
o
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
Air flow rate
Static pressure [Pa(in.W.G.
o
10
-2
)]
-200(-80)
-150(-60)
-100(-40)
-50(-20)
50(20)
0
2
50
100
150
200
250
[CFM]
4
8 [CMM]
6
Air flow rate
Static pressure [Pa(in.W.G.
o
10
-2
)]
2
PLFY-P24/30/36NBMU-E2
Multifunction ca Standard filter
Multifunction ca High efficiency filter
Taking air into the unit
Taking air into the unit
4-4. FRESH AIR INTAkE AMOUNT & STATIC PRESSURE CHARACTERISTICS
1
PLFY-P08/12/18NBMU-E2
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
E
C
2
Q
Qa
A
D
3
Q
…
Designed amount of fresh air intake
<CMM (CFM)>
A
…
Static pressure loss of fresh air
intake duct system with air flow
amount Q <Pa (in.W.G.
o
10
-2
)>
B
…
Forced static pressure at air condi-
tioner inlet with air flow 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
OCH579
