18
1m
1m
MICROPHONE
UNIT
GROUND
90
80
70
60
50
40
30
20
10
63
125
250
500
1000
2000
4000
8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCT
A
VE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002
µ
bar)
BAND CENTER FREQUENCIES, Hz
PU/PUH-P1.6VGAA.UK
PU/PUH-P1.6VGAA
1
.UK
PU/PUH-P1.6YGAA.UK
PU/PUH-P1.6YGAA
1
.UK
COOLING
MODE
HEATING
47
SPL(dB)
49
LINE
6-3. NOISE CRITERION CURVES
90
80
70
60
50
40
30
20
10
63
125
250
500
1000
2000
4000
8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCT
A
VE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002
µ
bar)
BAND CENTER FREQUENCIES, Hz
COOLING
MODE
HEATING
SPL(dB)
LINE
PU/PUH-P2VGAA.UK
PU/PUH-P2VGAA
1
.UK
PU/PUH-P2YGAA.UK
PU/PUH-P2YGAA
1
.UK
48
49
90
80
70
60
50
40
30
20
10
OCT
A
VE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002
µ
bar)
63
125
250
500
1000
2000
4000
8000
BAND CENTER FREQUENCIES, Hz
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
COOLING
MODE
HEATING
SPL(dB)
LINE
PU/PUH-P2.5VGAA.UK
PU/PUH-P2.5VGAA
1
.UK
PU/PUH-P2.5YGAA.UK
PU/PUH-P2.5YGAA
1
.UK
48
50
90
80
70
60
50
40
30
20
10
63
125
250
500
1000
2000
4000
8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCT
A
VE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002
µ
bar)
BAND CENTER FREQUENCIES, Hz
PUH-P1VGAA.UK
PUH-P1VGAA
1
.UK
COOLING
MODE
HEATING
46
SPL(dB)
48
LINE
OC261-D--1.qxp 05.2.18 11:07 AM Page 18
