Panasonic S-36PU1E5 Technical Data & Service Manual page 171

• U1, Y1 Types
When an External Air Intake Flange (ø100) is in Use
External Air Intake Volume and Resistance and
Operation Noise Characteristics within the Unit
100
90
80
70
60
50
40
30
20
10
0
0 5 10
External Air Intake Volume (m
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 graph for operation noise characteristics and the operation noise of the unit as
stipulated in the catalogue.
The operation noise conforms to JIS standards and constitute measurements taken in an anechoic chamber
1.5 m directly beneath the indoor unit. Under normal circumstances, the values shown here are 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 it is fed directly into the unit (ø100)
Type
Permissible Air Intake
Volume (m 3 /h)
NOTE
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.
50
40
30
Operation Noise
20
(External Air Intake Only)
15 18 20
3
/h)
36 45 50 60
13 15 15 17
1-165
With the External Air Intake Flange Attached
U1 Type
Duct (ø100) for Connecting
the External Air Intake Flange
71 100 125 140
18 18 18 18
1
Y1 Type