Mitsubishi PLH-3AK.UK Technical & Service Manual page 68

4. Fresh air intake amount & static pressure characteristics
(1) PLH-3AK.UK
PLH-3AK .UK
1
Multifunction casement + Standard filter
Static pressure [Pa]
50
1 2 3
0
-50
-100
-150
-200
Taking air into the unit
Static pressure [Pa]
50
1 2 3
0
-50
-100
-150
-200
(1) PLH-4, 5, 6AKS.UK
PLH-4, 5, 6AKS
1
Multifunction casement + Standard filter
Static pressure [Pa]
50
1 2 3
0
-50
-100
-150
-200
Taking air into the unit
Static pressure [Pa]
50
1 2 3
0
-50
-100
-150
-200
PLH-3AKH.UK
PLH-3AKH .UK
1
4 5 6
3
Air flow [m /min]
2 intakes
1 intake
4 5 6
3
Air flow [m /min]
PLH-4, 5, 6AKHS.UK
.UK PLH-4, 5, 6AKHS
4 5 6 7 8
2 intakes
1 intake
4 5 6 7 8
Multifunction casement + High efficiency filter
Static pressure [Pa]
50
1
0
-50
-100
-150
-200
How to read curves
Duct characteristics
Curve in the
at site
1
left praphs.
0
Q
2
Q
3
Q
.UK
Qa
1
Multifunction casement + High efficiency filter
Static pressure [Pa]
50
1
9
0
Air flow
3
[m /min]
-50
-100
-150
-200
9
3
Air flow [m /min]
68
2 3 4 5 6
Air flow [m
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
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
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
2 3 4 5 6 7
1 intake
3
/min]
<m /min>
3
<Pa>
<Pa>
<Pa>
loss increase
<Pa>
<m 3 /min>
8 9
Air flow
3
[m /min]
2 intakes