HR M
ANUAL
I
NTRODUCTION
Manual version 3.0 (10-10-2017)
en-9
en
1.3.6 Field of application
Observe the following limits for the unit:
Operating limits for all models
Parameters of use for water-heated models
Note:
n
Consult Biddle if you want to connect a unit to a
water flow-path with higher temperatures and higher
pressure.
Warning:
w
The unit may not be used in potentially
explosive environments, outdoors or in very
dusty or aggressive air conditions.
Biddle shall not be held liable for damage caused by
use under these conditions.
Sound levels
Maximum sound power level in ducts
Ambient conditions
Temperature
5 °C to 40°C
Relative air
humidity
20% - 95%, not
condensing
Power supply voltage
see type plate
Power
see type plate
SOUND
POWER
LEVEL
(L
W
RE
. 10
-12
W)
OCTAVE
BAND
CENTRE
FREQUENCY
(H
Z
)
L
WA
D
B(A)
63
125
250
500
1000
2000
4000
8000
HR 25
supply air
69.8
65.6
76.4
75.1
78.8
80.4
78.5
74.1
85.5
extract air
65.7
60.5
70.6
69.9
67.4
70.8
70.9
66.7
76.6
exhaust air
69.8
65.6
76.4
75.1
78.8
80.4
78.5
74.1
85.5
fresh air
65.7
60.5
70.6
69.9
67.4
70.8
70.9
66.7
76.6
HR 35
supply air
75.8
70.7
78.6
78.4
81.3
81.2
78.3
75.4
86.6
extract air
68.6
65.8
75.5
72.3
69.2
70.2
68.2
67.2
76.7
exhaust air
75.8
70.7
78.6
78.4
81.3
81.2
78.3
75.4
86.6
fresh air
68.6
65.8
75.5
72.3
69.2
70.2
68.2
67.2
76.7
