Panasonic S-22MU1E5A Technical Data Manual page 208

7. Fresh Air Intake
7-2. External Air Intake Volume & Resistance Within Unit / Operation Noise Characteristics (continued)
Low Silhouette Ducted (F2 Type)
7-2-4. In a Case of External Air Intake to Unit Directly (Using external air intake cylindrical flange)
50
45
40
35
30
25
20
15
1
10
5
0
0
2
External Air Intake Volume & Resistance Within Unit/
1. Calculate the operation noise when external air is being fed by combining the noise when only external air is being fed as
3
shown in the diagram for operation noise characteristics and the operation noise of the unit as stipulated in the catalogue.
2. The operation noise conforms to JIS standards and constitute measurements taken in an anechoic chamber 1.5m directly
below the indoor unit. Under normal circumstances, the diagram shown above is greater owing to the effects of surrounding
noise and reverberation when the unit is actually installed.
4
The amount of external air intake that is possible to feed when it is fed directly into the unit
Type
Permissible air intake
3
volume (m /h)
* The operation noise for models that use small units is lower, so use values that are within the range shown in the
5
above table. Using values that exceed these will result in noise when only external air is fed being louder than the
noise emitted from the unit.
6
7
8
9
Resistance within the unit
(High speed wind)
50 100 150
External Air Intake Volume (m
Operation Noise Characteristics
15 22 28
102 102 102
Operation noise
(External air intake only)
40
35
External air intake cylindrical flange
30
25
200 250
3 /h)
With the External Air Intake Flange Attached
36 45 56 60
126 126 150 180
4-102
VRF SYSTEMS Indoor Unit Specifi cations
Connection duct: diameter ø150
73 90 106
180 180 240
140 160
240 240