1
1-97
•
ASS
Type
When an External Air Intake Flange (ø100) is in Use
External Air Intake Volume and Resistance and
Operation Noise Characteristics within the Unit
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
1.5m 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.
NOTE
Type
12
16
18
Permissible Air Intake
Volume (m
3
/h)
108
126
150
With the External Air Intake Flange Attached
US Type
The amount of external air that is possible to feed when
connected to round ducts (ø100).
Using values that exceed those shown
in the above table will result in noise
when only external air is fed being
louder than the noise emitted from the
ndoor unit, so only use values that
are within the range of the above
values.
External Air Intake Volume and
Resistance within the Unit
With the External Air
Intake Flange Attached
Resistance within the Unit (Pa)
External Air Intake Volume (m
3
/h)
Noise with only External
Air Intake dB(A)
Operation Noise
(External Air Intake Only)
Duct (ø100) for Connecting
the External Air Intake Flange
M Type
ASS
Type
(5 series)
Resistance within the Unit (P
a)
Resistance within the Unit OFF
Permissible Air Intake Volume (m
3
/h)
Duct (ø100) for Connecting
the External Air Intake Flange
0
0
10
20
30
40
50
60
120
180
0
0
10
20
30
20
30
40
50
40
50
60
70
80
90
100
5
10
15
20
18
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.
Type
Permissible Air Intake
Volume (m
3
/h)
12
13
16
15
18
25
36
48
60
15
18
18
18
18
The amount of external air that is possible to feed when it is fed directly into the unit (ø100)
NOT
ASS
Type
(6 series)
SM830159-06̲Elite̲PAC-i.indb 368
SM830159-06̲Elite̲PAC-i.indb 368
2012/04/27 15:22:59
2012/04/27 15:22:59
