Panasonic S-22MU1E5A Technical Data Manual page 206

7. Fresh Air Intake
7-2-2. In a Case of External Air Intake to Unit Directly (Using external air intake kit for unit: CZ-BCU2)
100
Resistance within the unit
90
(High speed wind)
80
70
60
50
40
30
20
1
10
0
0
External Air Intake Volume (m
External Air Intake Volume & Resistance Within Unit/
2
Operation Noise Characteristics
1. Calculate the operation noise when external air is being fed by combining the noise when only external air is being fed as
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
3
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.
The amount of external air intake that is possible to feed when it is fed directly into the unit (CZ-BCU2)
Type
4
Permissible air intake
volume (m 3 /h)
* The operation noise for models that use small units is lower, so use values that are within the range shown in the
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.
5
6
7
8
9
20
5 10 15 18 20
3
/h)
22 28 36
13 13 13
Operation noise
(External air intake only)
Indoor unit
50
40
30
With the External Air Intake Flange Attached
45 56 60
15 15 17
4-100
VRF SYSTEMS Indoor Unit Specifi cations
Kit for external air intake (for unit)
(CZ-BCU2)
Connection duct: diameter ø100
73 90 106 140
18 18 18 18
160
18