Fresh Air Intake Amount & Static Pressure Characteristics; Taking Air Into The Unit; Multifunction Casement + High Efficiency Filter; Multifunction Casement + Standard Filter - Mitsubishi Electric City Multi Series Technical & Service Manual

4-4. FRESH AIR INTAKE AMOUNT & STATIC PRESSURE CHARACTERISTICS
1
PLFY-EP06/08/12/15/18NEMU-E

Taking air into the unit

50(20)
0
-50(-20)
-100(-40)
-150(-60)
0 0.2 0.4
10

Multifunction casement + High efficiency filter

50(20)
0
-50(-20)
-100(-40)
-150(-60)
-200(-80)
0 1 2
50
2
PLFY-EP18NEMU-E1
PLFY-EP24/30/36/48NEMU-E
Taking air into the unit
50(20)
0
-50(-20)
-100(-40)
-150(-60)
-200(-80)
0 0.2 0.4 0.6
10 20
Multifunction casement + High efficiency filter
50(20)
0
-50(-20)
-100(-40)
1 - inlet
-150(-60)
-200(-80)
0 1 2
50
OCH610G
0.6 0.8 1 1.2
20 30 40
Airflow rate
2 - inlet
1 - inlet
3 4 5
100 150
Airflow rate
0.8 1 1.2 1.4 1.6
30 40 50
Airflow rate
2 - inlet
3 4 5 6
100 150 200
Airflow rate

Multifunction casement + Standard filter

50(20)
0
-50(-20)
-100(-40)
-150(-60)
-200(-80)
0 1
1.4
[CMM]
[CFM]
How to read curves
Duct characteristics
Curve in the
at site
1
graphs.
0
Q
2
Q
3
6 [CMM]
[CFM]
200
Q
Qa
Multifunction casement + Standard filter
50(20)
0
-50(-20)
-100(-40)
-150(-60)
-200(-80)
0 1
1.8 [CMM]
50
60
[CFM]
7 [CMM]
[CFM]
20
2 - inlet
1 - inlet
2 3 4
50 100 150
Airflow rate
Q ... Designed amount of fresh air intake
A ... Static pressure loss of fresh air intake
duct system with airflow amount Q
<Pa (in.W.G.o10
B ... Forced static pressure at air condi-
tioner inlet with airflow amount Q
<Pa (in.W.G.o10
C ... Static pressure of booster fan with
airflow amount Q <Pa (in.W.G.o10
D ... Static pressure loss increase amount of
fresh air intake duct system for airflow
amount Q <Pa (in.W.G.o10
E ... Static pressure of indoor unit with
airflow amount Q <Pa (in.W.G.o10
Qa ... Estimated amount of fresh air intake
without D
2 - inlet
1 - inlet
2 3 4 5
100 150
Airflow rate
[CMM]
5 6
200 [CFM]
<CMM (CFM)>
-2
)>
-2
)>
-2
)>
-2
)>
-2
)>
<CMM (CFM)>
[CMM]
6 7
[CFM]
200