Engineering Manual

MULTI
F
MAX
MULTI
F
DUCT (HIGH STATIC) INDOOR UNITS
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Static Pressure (in. wg)       0.55  0.70 0.78
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$LUIORZ5DWH&)0 Setting Value (in. wg)
/0+1+9

High           
Mid  78 89 99       
Low           
/0+1+9

High  -       ---
Mid  -       ---
Low  -97     ---
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• To get the desired air flow and external static pressure combination, use the setting value from the table. Using a setting value other
than that listed in the table will not provide the desired combination.
• Table data is based at 230V. Air flow rate varies according to voltage fluctuation.
Model No.
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High Fan Speed
Medium Fan
Speed
Low Fan Speed
/0+1+9   
/0+1+9   
)LJXUH Sound Pressure Level Measurement Location.
7DEOHMulti F Ceiling-Concealed Duct (High Static) External Static Pressure Setting Values Table.
)LJXUH Sound Pressure Level Diagrams.
• Measurements taken with no attenuation and units operating at full
load normal operating condition.
• Sound level will vary depending on a range of factors such as
construction (acoustic absorption coefficient) of particular area in
which the equipment is installed.
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4.9 ft.
6.6 ft.
3.3 ft.
DUCT
DISCHARGE SUCTION
DUCT
Octave Band Sound Pressure Level (0dB = 20μPa)
10
20
30
40
50
60
70
80
Approximate
Hearing
Threshold
Octave Band Center Fre
q
uenc
y
(
Hz
)
Octave Band Sound Pressure Level (0dB = 20μPa)
10
20
30
40
50
60
70
80
63 125 250 500 1000 2000 4000 8000
Octave Band Center Fre
q
uenc
y
(
Hz
)
63 125 250 500 1000 2000 4000 8000
NC-15
NC-20
NC-25
NC-30
NC-35
NC-40
NC-45
NC-50
NC-55
NC-60
NC-65
NC-15
NC-20
NC-25
NC-30
NC-35
NC-40
NC-45
NC-50
NC-55
NC-60
NC-65
Approximate
Hearing
Threshold
LMHN240HV LMHN360HV
DUCT (HIGH STATIC) | 109
Ceiling-Concealed Duct (High Static)
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