Multi F Outdoor Unit Engineering Manual

Combination
Capacity Index
(kBtu/h[%])
Outdoor Air
Temp.
(°F DB)
Indoor Air Temp. °F DB / °F WB
68 / 57 73 / 61 77 / 64 80 / 67 86 / 72 90 / 75
TC PI TC PI TC PI TC PI TC PI TC PI
Ducted Indoor
Units
59 (110%)
14 50.79 3.29 53.94 3.41 57.10 3.53 59.38 3.57 63.41 3.64 66.56 3.71
20 50.75 3.33 53.90 3.45 57.05 3.58 59.33 3.62 63.36 3.69 66.51 3.76
25 50.71 3.38 53.86 3.50 57.01 3.63 59.29 3.67 63.31 3.74 66.46 3.82
30 50.67 3.43 53.82 3.55 56.97 3.68 59.24 3.72 63.26 3.79 66.41 3.87
35 50.63 3.47 53.78 3.60 56.92 3.73 59.19 3.78 63.21 3.85 66.36 3.92
40 50.60 3.52 53.74 3.65 56.88 3.78 59.15 3.83 63.16 3.90 66.31 3.98
45 50.56 3.57 53.70 3.70 56.84 3.83 59.10 3.88 63.12 3.95 66.26 4.03
50 50.52 3.62 53.66 3.75 56.79 3.88 59.06 3.93 63.07 4.00 66.21 4.08
55 50.48 3.66 53.61 3.80 56.75 3.94 59.01 3.98 63.02 4.06 66.15 4.14
60 50.44 3.71 53.57 3.85 56.71 3.99 58.97 4.03 62.97 4.11 66.10 4.19
65 50.40 3.76 53.53 3.89 56.66 4.04 58.92 4.08 62.92 4.16 66.05 4.24
70 50.36 3.80 53.49 3.94 56.62 4.09 58.88 4.13 62.87 4.21 66.00 4.30
75 49.15 4.01 52.27 4.16 55.39 4.31 57.64 4.36 61.63 4.44 64.75 4.53
80 47.94 4.22 51.05 4.37 54.16 4.53 56.41 4.58 60.39 4.67 63.50 4.76
85 46.74 4.42 49.84 4.58 52.95 4.75 55.19 4.80 59.16 4.89 62.26 4.99
90 45.54 4.63 48.63 4.79 51.73 4.97 53.97 5.03 57.92 5.12 61.02 5.22
95 44.23 4.83 47.31 5.01 50.40 5.19 51.81 5.25 56.56 5.35 59.64 5.46
100 43.16 5.04 46.24 5.22 49.32 5.41 51.14 5.47 55.48 5.58 58.56 5.69
105 42.08 5.24 45.16 5.43 48.24 5.63 50.47 5.70 54.41 5.80 57.49 5.92
110 41.00 5.45 44.08 5.65 47.16 5.85 49.39 5.92 53.33 6.03 56.41 6.15
115 39.92 5.65 43.01 5.86 46.09 6.07 48.31 6.14 52.25 6.26 55.33 6.38
118 39.28 5.78 42.36 5.99 45.44 6.20 47.67 6.28 51.60 6.39 54.69 6.52
122 39.06 5.94 42.14 6.16 45.23 6.38 47.45 6.45 51.39 6.58 54.47 6.71
Ducted Indoor
Units
54 (100%)
14 50.00 3.19 53.10 3.31 56.21 3.43 58.45 3.47 62.41 3.53 65.52 3.60
20 49.96 3.24 53.06 3.36 56.16 3.48 58.40 3.52 62.37 3.58 65.47 3.66
25 49.92 3.28 53.02 3.40 56.12 3.53 58.36 3.57 62.32 3.63 65.42 3.71
30 49.88 3.33 52.98 3.45 56.08 3.58 58.31 3.62 62.27 3.69 65.37 3.76
35 49.84 3.38 52.94 3.50 56.03 3.63 58.27 3.67 62.22 3.74 65.32 3.81
40 49.80 3.42 52.90
3.55 55.99 3.68 58.22 3.72 62.18 3.79 65.27 3.86
45 49.77 3.47 52.86 3.59 55.95 3.72 58.18 3.77 62.13 3.84 65.22 3.92
50 49.73 3.51 52.82 3.64 55.90 3.77 58.14 3.82 62.08 3.89 65.17 3.97
55 49.69 3.56 52.78 3.69 55.86 3.82 58.09 3.87 62.03 3.94 65.12 4.02
60 49.65 3.60 52.74 3.74 55.82 3.87 58.05 3.92 61.99 3.99 65.07 4.07
65 49.61 3.65 52.70 3.78 55.78 3.92 58.00 3.97 61.94 4.04 65.02 4.12
70 49.58 3.70 52.65 3.83 55.73 3.97 57.96 4.02 61.89 4.09 64.97 4.17
75 48.38 3.90 51.45 4.04 54.53 4.19 56.74 4.23 60.67 4.31 63.74 4.40
80 47.19 4.09 50.25 4.24 53.32 4.40 55.53 4.45 59.44 4.53 62.51 4.62
85 46.01 4.29 49.06 4.45 52.12 4.61 54.33 4.67 58.23 4.75 61.29 4.85
90 44.82 4.49 47.87 4.66 50.92 4.83 53.12 4.88 57.02 4.97 60.07 5.07
95 43.54 4.69 46.57 4.86 49.61 5.04 51.00 5.10 55.68 5.20 58.71 5.30
100 42.48 4.89 45.51 5.07 48.55 5.26 50.34 5.32 54.61 5.42 57.65 5.53
105 41.42 5.09 44.45 5.28 47.49 5.47 49.68 5.53 53.55 5.64 56.59 5.75
110 40.36 5.29 43.39 5.48 46.43 5.68 48.62 5.75 52.49 5.86 55.53 5.98
115 39.30 5.49 42.33 5.69 45.37 5.90 47.56 5.97 51.43 6.08 54.47 6.20
118 38.66 5.61 41.70 5.82 44.73 6.03 46.92 6.10 50.80 6.21 53.83 6.34
122 38.45 5.77 41.49 5.98 44.52 6.20 46.71 6.27 50.59 6.39 53.62 6.52
PERFORMANCE DATA
Cooling Capacity Tables
Table 130: LMU540HV Cooling Capacity Table — Ducted Indoor Units (continued).
TC = Total Capacity (kBtu/h).
PI = Power Input (kW).
Nominal capacity as rated: 0 ft. above sea level with Piping Length as Main Pipe (16.4 ft.) + Branch
pipe (98.4 ft.) = 115 ft.
0 ft. level difference between outdoor and indoor units.
Nominal cooling capacity rating obtained with air entering the indoor unit at 80ºF dry bulb (DB) and
67ºF wet bulb (WB), and outdoor ambient conditions of 95ºF dry bulb (DB) and 75ºF wet bulb (WB).
The shaded table columns and rows indicate reference data. When operating at this temperature, these
values can be different if the system is not running consistently.
Due to our policy of continuous product innovation, some specications may change without notication.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
144 | MULTI F MAX OUTDOOR UNIT
Multi F and Multi F MAX Heat Pump System Engineering Manual
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