- (01 - 19) -
D
U
C
T T
YP
E
AR
C
72
-9
0LH
TA
D
U
C
T T
YP
E
AR
C
72
-9
0LH
TA
OPERATION NOISE
8.
NOISE LEVEL CURVE
8-1.
MODEL
: AR
C72LHTA
Condition
Static pressure : 72Pa
Static pressure mode : Normal
HIGH
LOW
Heating
z
O
ct
av
e b
an
d s
ou
nd p
re
ss
ur
e l
ev
el
, d
B:
(0
dB
=0
.0
00
2µ
ba
r)
80
70
60
50
40
30
20
10
0
NC-65
NC-60
NC-55
NC-50
NC-45
NC-40
NC-35
NC-30
NC-25
NC-20
NC-15
HIGH
LOW
Cooling
z
O
ct
av
e b
an
d s
ou
nd p
re
ss
ur
e l
ev
el
, d
B:
(0
dB
=0
.0
00
2µ
ba
r)
Octave band center frequency,Hz
80
70
60
50
40
30
20
10
0
NC-65
NC-60
NC-55
NC-50
NC-45
NC-40
NC-35
NC-30
NC-25
NC-20
NC-15
HIGH
LOW
O
ct
av
e b
an
d s
ou
nd p
re
ss
ur
e l
ev
el
, d
B:
(0
dB
=0
.0
00
2µ
ba
r)
80
70
60
50
40
30
20
10
0
NC-65
NC-60
NC-55
NC-50
NC-45
NC-40
NC-35
NC-30
NC-25
NC-20
NC-15
HIGH
LOW
Heating
z
O
ct
av
e b
an
d s
ou
nd p
re
ss
ur
e l
ev
el
, d
B:
(0
dB
=0
.0
00
2µ
ba
r)
80
70
60
50
40
30
20
10
0
NC-65
NC-60
NC-55
NC-50
NC-45
NC-40
NC-35
NC-30
NC-25
NC-20
NC-15
MODEL
: AR
C90LHTA
Cooling
z
Octave band center frequency,Hz
63
125
250
500
1,000
2,000
4,000
8,000
Octave band center frequency,Hz
63
125
250
500
1,000
2,000
4,000
8,000
Octave band center frequency,Hz
63
125
250
500
1,000
2,000
4,000
8,000
63
125
250
500
1,000
2,000
4,000
8,000