Panasonic S-36PU1E5A Technical Data & Service Manual page 253

R410a models
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1-9-2.
External Air Intake Volume & Resistance Within Unit / Operation Noise Characteristics
U1
4-Way Cassette (
Type)
CAUTION
Use the following diagram along with the section "1-9-1. Precautions Regarding External Air Intake"
1-9-2-1. In a Case of External Air Intake Using Air Intake Chamber (CZ-FCU2+CZ-ATU2)
100
90
Resistance within the unit
80
(High speed wind)
70
60
50
40
30
20
10
0
-10
0
50
100
External Air Intake Volume (m
External Air Intake Volume & Resistance Within Unit/
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
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 that is possible to feed when external air intake chamber is in use
(CZ-FCU2+CZ-ATU2)
Type
Permissible air intake
180
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.
Sample selection of booster fans
In a case of necessity at 200m
1. Resistance within the unit
2. Duct resistance in case of duct with 4m length
Duct resistance
Therefore, a booster is required to save a total 95 Pa of static pressure.
50
40
30
20
150
200
240
3
/h)
36
45
50
60
180
180
190
3
/h of external air intake:
Diagram from "Resistance within the unit"
Diagram from "Air Flow Volume for
Flexible Cylindrical Duct-Pressure Loss"
Operation noise
(External air intake only)
Kit for external air intake (for chamber)
Filter chamber
(CZ-FCU2)
With the External Air Intake Chamber Attached
71
100
125
140
240
240
240
240
55 Pa
40 Pa
Total 95 Pa
1-243
(CZ-ATU2)
Connection duct: diameter ø100
(=10 Pa/m x 4m)
1

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