Mitsubishi Electric PL12AK User Manual page 40

3. Fresh air intake amount & static pressure characteristics
l l PL12 / 18AK
Multifunction casement + Standard filter
Static pressure [in. W.G. O10
-2
]
20
50 100
0
-20
-40
-60
-80
Taking air into the unit
Static pressure [in. W.G. O10
-2
]
20
50 100
0
-20
-40
-60
-80
2 2 PL24/30/36/42AK
Multifunction casement + Standard filter
Static pressure [in. W.G. O10
-2
]
20
50 100
0
-20
-40
-60
-80
Taking air into the unit
Static pressure [in. W.G. O10
-2
]
20
50 100
0
-20
-40
-60
-80
150 200
Air flow [CFM]
2 intakes
1 intake
150 200
Air flow [CFM]
150 200 250 300
Air flow
[CFM]
2 intakes
1 intake
150 200 250 300
Air flow [CFM]
Multifunction casement + High efficiency filter
Static pressure [in. W.G. O10
-2
]
20
50 100
0
-20
-40
-60
How to read curves
Duct characteristics
Curve in the
at site
1
left graphs.
0
Q
2
Q
3
Q
Qa
Multifunction casement + High efficiency filter
tatic pressure [in. W.G. O10
-2
]
20
50 100
0
-20
-40
-60
-80
OC246-40
150 200
Air flow [CFM]
2 intakes
1 intake
Q ... Planned amount of fresh air intake
A ... Static pressure loss of fresh air
intake duct system with air flow
amount Q
<in.W.G.O10
B ... Forced static pressure at air condi-
tioner inlet with air flow amount Q
<in.W.G.O10
C ... Static pressure of booster fan with
air flow amount Q <in.W.G.O10
D ... Static
pressure loss
amount of fresh air intake duct sys-
tem for air flow amount Q
<in.W.G.O10
E ... Static pressure of indoor unit with air
<in.W.G.O10
flow amount Q
Qa ... Estimated amount of fresh air
intake with out D <CFM>
150 200 250 300
Air flow
[CFM]
2 intakes
1 intake
<CFM>
-2
>
-2 >
-2 >
increase
-2 >
-2 >