68
Static pressure [Pa]
Air flow [m
3
/min]
2 intakes
1 intake
50
-50
-100
-150
-200
0
1
2
3
4
5
6
Static pressure [Pa]
Air flow [m
3
/min]
2 intakes
1 intake
50
-50
-100
-150
-200
0
1
2
3
4
5
6
Static pressure [Pa]
Air flow [m
3
/min]
50
-50
-100
-150
-200
0
1
2
3
4
5
6
Static pressure [Pa]
Air flow
[m
3
/min]
2 intakes
1 intake
50
-50
-100
-150
-200
0
1
2
3
4
5
6
7
8
9
Static pressure [Pa]
Air flow
[m
3
/min]
2 intakes
1 intake
50
-50
-100
-150
-200
0
1
2
3
4
5
6
7
8
9
Static pressure [Pa]
Air flow [m
3
/min]
50
-50
-100
-150
-200
0
1
2
3
4
5
6
7
8
9
(1) PLH-3AK.UK
PLH-3AKH.UK
PLH-3AK
1
.UK
PLH-3AKH
1
.UK
Multifunction ca Standard filter
(1) PLH-4, 5, 6AKS.UK
PLH-4, 5, 6AKHS.UK
PLH-4, 5, 6AKS
1
.UK
PLH-4, 5, 6AKHS
1
.UK
Multifunction ca High efficiency filter
Taking air into the unit
Multifunction ca Standard filter
Multifunction ca High efficiency filter
Taking air into the unit
4. Fresh air intake amount & static pressure characteristics
Q
0
B
A
C
1
Curve in the
left praphs.
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 dust sys-
tem for air flow amount Q <Pa>
E…Static pressure of indoor unit with air
flow amount Q
Qa…Estimated amount of fresh air
intake with out D
<m
3
/min>
<m
3
/min>
<Pa>
<Pa>
<Pa>
<Pa>
How to read curves
OC211-A--3.qxp 04.9.28 4:42 PM Page 68
