LG MULTI F MAX, Engineering Manual, Page: 117 / 224

MULTI
F
MAX
MULTI
F
DUCT (HIGH STATIC) INDOOR UNITS
External Static Pressure / Acoustic Data
Static Pressure (in. wg) 0.1 0.16 0.23 0.31 0.39 0.47 0.55 0.62 0.70 0.78
Model No. / Nominal Capacity
of Indoor Unit (Btu/h)
Airflow Rate / CFM Setting Value (in. wg)
LMHN240HV
24,000
High 688 82 92 103 113 122 131 140 147 154 160
Mid 618 78 89 99 110 119 128 137 144 151 157
Low 530 73 86 96 107 116 125 134 141 148 154
LMHN360HV
36,000
High 1,130 - 124 133 140 148 154 160 - - -
Mid 953 - 112 122 130 137 145 152 - - -
Low 706 - 97 107 117 125 133 141 - - -
Table 59: Sound Pressure Levels (dB[A]).
• 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.
Sound Pressure Levels (dB[A]) (Cooling and Heating)
High Fan Speed
Medium Fan
Speed
Low Fan Speed
LMHN240HV 37 36 35
LMHN360HV 44 42 40
Figure 157: Sound Pressure Level Measurement Location.
Table 58: Multi F Ceiling-Concealed Duct (High Static) External Static Pressure Setting Values Table.
Figure 158: 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.
• Sound power levels are measured in dB(A)±3.
• Tested in anechoic chamber per ISO Standard 3745.
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 Frequency (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 Frequency (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) | 117
Ceiling-Concealed Duct (High Static)
Due to our policy of continuous product innovation, some specifications may change without notification.
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