Mitsubishi Electric MFZ-KA-VA Technical Data Book page 65

8-2. SLZ-KA•VA SLZ-KA•VAL
8-2-1. Fresh air intake (Location for installation)
At the time of installation, use the duct holes (cut out) located at the positions shown in following diagram, as and when required.
Fresh air intake
Refrigerant pipe
8-2-2. Fresh air intake amount & static pressure characteristics
Taking air into the unit
Static pressure : P [Pa]
50
0.5 1.0 1.5 2.0 2.5 3.0 3.5
0
-50
-100
-150
-200
-250
-300
NOTE: Fresh air intake amount should be 20% or less of
whole air amount to prevent dew dripping.
Drain pipe
Electrical Box
3
Airflow : Q [m /min]
65 65
Detail drawing of fresh air intake
100 25
73.4
3- 2.8 hole
Cut out hole
Burring hole
Ceiling surface
How to read curves
Duct characteristics
Curve in the
at site
1
left graphs.
0
Q
2
Q
3
Q
Qa
Q...Designed amount of fresh air intake
<m 3
A...Static pressure loss of fresh air
intake duct system with airflow
amount Q <Pa>
B...Forced static pressure at air condi-
tioner inlet with airflow amount Q
<Pa>
C...Static pressure of booster fan with
airflow amount Q <Pa>
D...Static pressure loss increase
amount of fresh air intake duct sys-
tem for airflow amount Q <Pa>
E...Static pressure of indoor unit with
airflow amount Q
Qa...Estimated amount of fresh air
intake without D <m 3 /min>
/min>