18
Static pressure [
Pa(in.W.G.
o
10
-2
)]
Airflow rate
Static pressure [
Pa(in.W.G.
o
10
-2
)]
Static pressure [
Pa(in.W.G.
o
10
-2
)]
Static pressure [
Pa(in.W.G.
o
10
-2
)]
Static pressure [
Pa(in.W.G.
o
10
-2
)]
Static pressure [
Pa(in.W.G.
o
10
-2
)]
Airflow rate
Airflow rate
0
0.2
0.4
0.6
0.8
1
1.2
1.4
0
1
2
3
4
5
6
0
1
2
3
4
5
6
-150(-60)
-200(-80)
-100(-40)
-50(-20)
0
50(20)
-150(-60)
-200(-80)
-100(-40)
-50(-20)
0
50(20)
-150(-60)
-200(-80)
-100(-40)
-50(-20)
0
50(20)
-150(-60)
-100(-40)
-50(-20)
0
50(20)
-150(-60)
-200(-80)
-100(-40)
-50(-20)
0
50(20)
-150(-60)
-200(-80)
-100(-40)
-50(-20)
0
50(20)
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
0
1
2
3
4
5
6
7
0
1
2
3
4
5
7
6
2 - inlet
2 - inlet
2 - inlet
1 - inlet
1 - inlet
1 - inlet
2 - inlet
1 - inlet
10
20
30
40
[CFM]
Airflow rate
50
100
150
200
Airflow rate
10
20
30
40
50
60
50
100
150
200
[CMM]
[CFM]
[CMM]
[CFM]
[CMM]
[CFM]
[CMM]
50
100
150
200
Airflow rate
[CFM]
[CMM]
50
100
150
200
[CFM]
[CMM]
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 airflow
amount Q <Pa (in.W.G.
o
10
-2
)>
B
…
Forced static pressure at air condi
-
tioner inlet with airflow amount Q
<Pa (in.W.G.
o
10
-2
)>
C
…
Static pressure of booster fan with
airflow amount Q <Pa (in.W.G.
o
10
-
2
)>
D…
Static pressure loss increase amount
of fresh air intake duct system for
airflow amount Q <Pa (in.W.G.
o
10
-
2
)>
E…
Static pressure of indoor unit with
airflow amount Q <Pa (in.W.G.
o
10
-
2
)>
Qa
…
Estimated amount of fresh air
intake without D <CMM (CFM)>
2
PLFY-P36/48NEMU-E
Taking air into the unit
Multifunction ca Standard filter
Multifunction ca High efficiency filter
Multifunction ca High efficiency filter
4-4. FRESH AIR INTAkE AMOUNT & STATIC PRESSURE CHARACTERISTICS
1
PLFY-P08/12/15/18/24/30NEMU-E
Taking air into the unit Multifunction ca Standard filter
How to read curves
OCH611D
