OC246-40
Static pressure [in. W.G.
O
10
-2
]
Air flow [CFM]
20
50
100
150
200
-20
-40
-60
-80
0
2 intakes
1 intake
2 intakes
1 intake
Static pressure [in. W.G.
O
10
-2
]
Air flow [CFM]
20
50
100
150
200
-20
-40
-60
0
Static pressure [in. W.G.
O
10
-2
]
Air flow [CFM]
20
50
100
150
200
-20
-40
-60
-80
0
Air flow
[CFM]
2 intakes
1 intake
Static pressure [in. W.G.
O
10
-2
]
20
50
100
150
200
250
300
-20
-40
-60
-80
0
Air flow
[CFM]
2 intakes
1 intake
tatic pressure [in. W.G.
O
10
-2
]
20
50
100
150
200
250
300
-20
-40
-60
-80
0
Air flow [CFM]
Static pressure [in. W.G.
O
10
-2
]
20
50
100
150
200
250
300
-20
-40
-60
-80
0
l
l
PL12 / 18AK
Multifunction ca Standard filter
2
2
PL24/30/36/42AK
Multifunction ca High efficiency filter
Taking air into the unit
Multifunction ca Standard filter
Multifunction ca High efficiency filter
Taking air into the unit
3. Fresh air intake amount & static pressure characteristics
Q
0
B
A
C
1
Curve in the
left graphs.
Duct characteristics
at site
Q
A
EC
2
Q
Qa
AD
3
Q…Planned 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
D…Static pressure loss increase
amount of fresh air intake duct sys-
tem for air flow amount Q
E…Static pressure of indoor unit with air
flow amount Q
Qa…Estimated amount of fresh air
intake with out D
<CFM>
<CFM>
<in.W.G.
O
10
-2
>
<in.W.G.
O
10
-2
>
<in.W.G.
O
10
-2
>
<in.W.G.
O
10
-2
>
How to read curves
<in.W.G.
O
10
-2
>