LG ARNU423B8A4 - Page 167

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Vertical / Horizontal Air Handler
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External Static Pressure and Air Flow Ranges
Table 125: NJ Frame External Static Pressure and Air Flow Table.
NJ, NK Frames
Table 126: NK Frame External Static Pressure and Air Flow Table.
VERTICAL / HORIZONTAL AIR HANDLER
Model No. /
Capacity (MBh)
Flow Rate Static Pressure (in. WG)
Mode CFM 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
ARNU123NJA / 12
High 530 **53 58 66 72 82 84 92 *92 *92 *92
Mid 480 **53 56 64 70 79 83 92 *92 *92 *92
Low 380 **53 54 62 69 77 83 92 *92 *92 *92
ARNU183NJA4 / 18
High 580 **53 60 68 74 84 85 95 *95 *95 *95
Mid 530 **53 58 66 72 82 84 92 *92 *92 *92
Low 480 **53 55 64 70 79 83 92 *92 *92 *92
ARNU243NJA4 / 24
High 710 56 67 74 78 87 94 98 *98 *98 *98
Mid 640 53 65 70 75 85 91 96 *96 *96 *96
Low 480 **53 55 64 70 79 84 92 *92 *92 *92
ARNU303NJA4 / 30
High 880 65 72 80 85 92 98 103 *103 *103 *103
Mid 800 62 69 77 82 90 96 101 *101 *101 *101
Low 640 53 65 70 75 85 91 96 *96 *96 *96
ARNU363NJA4 / 36
High 990 80 85 90 95 100 103 *103 *103 *103 *103
Mid 880 65 72 80 85 92 98 103 *103 *103 *103
Low 800 62 69 77 82 90 96 101 *101 *101 *101
If the ESP is set incorrectly, the air conditioning may malfunction.
Model No. /
Capacity (MBh)
Flow Rate Static Pressure (in. WG)
Mode CFM 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
ARNU423NKA4 / 42
High 1,260 67 75 80 87 90 98 102 110 *115 *115
Mid 1,100 61 67 75 80 87 92 100 108 110 115
Low 1,000 56 65 72 77 84 90 98 105 108 115
ARNU483NKA4 / 48
High 1,400 74 79 84 91 96 102 110 115 *115 *115
Mid 1,260 67 75 80 87 90 98 102 110 115 *115
Low 1,000 56 65 72 77 84 90 98 105 108 115
ARNU543NKA4 / 54
High 1,475 77 82 87 93 98 105 113 115 *115 *115
Mid 1,400 74 79 84 91 96 102 110 113 *115 *115
Low 1,260 67 75 80 87 90 98 102 110 115 *115
* Flow rate (CFM) decreases by 3% per 0.1 in. WG.
** Fan external static pressure is at minimum value.
Minimum airow rates are listed in CFM.
If the ow rate (CFM) is increased by 400 CFM/ton from 1.5 tons to
2.5 tons of capacity, then ESP value must be increased by 4.
If the ow rate (CFM) is increased by 400 CFM/ton from 3.0 tons
to 4.5 tons of capacity, then The ESP value must be increased by 5.
Factory Default is high static pressure.
High static pressure is 0.5 in wg.
Low static pressure is 0.3 in wg.