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
49 (90%)
14 45.37 2.82 48.19 2.93 51.00 3.03 53.04 3.07 56.64 3.12 59.46 3.19
20 45.33 2.86 48.15 2.97 50.96 3.08 53.00 3.11 56.60 3.17 59.41 3.23
25 45.30 2.90 48.11 3.01 50.93 3.12 52.96 3.16 56.55 3.21 59.37 3.28
30 45.26 2.94 48.08 3.05 50.89 3.16 52.92 3.20 56.51 3.26 59.32 3.32
35 45.23 2.98 48.04 3.09 50.85 3.21 52.88 3.24 56.47 3.30 59.27 3.37
40 45.20 3.03 48.00 3.14 50.81 3.25 52.84 3.29 56.42 3.35 59.23 3.42
45 45.16 3.07 47.97 3.18 50.77 3.29 52.80 3.33 56.38 3.39 59.18 3.46
50 45.13 3.11 47.93 3.22 50.73 3.34 52.76 3.38 56.34 3.44 59.14 3.51
55 45.09 3.15 47.89 3.26 50.69 3.38 52.71 3.42 56.29 3.48 59.09 3.55
60 45.06 3.19 47.85 3.30 50.65 3.42 52.67 3.46 56.25 3.53 59.05 3.60
65 45.02 3.23 47.82 3.35 50.61 3.47 52.63 3.51 56.21 3.57 59.00 3.65
70 44.99 3.27 47.78 3.39 50.58 3.51 52.59 3.55 56.16 3.62 58.96 3.69
75 43.90 3.44 46.69 3.57 49.48 3.70 51.49 3.74 55.05 3.81 57.84 3.89
80 42.82 3.62 45.60 3.75 48.38 3.89 50.39 3.94 53.94 4.01 56.72 4.09
85 41.75 3.80 44.52 3.94 47.30 4.08 49.30 4.13 52.84 4.20 55.62 4.29
90 40.68 3.97 43.44 4.12 46.21 4.27 48.21 4.32 51.74 4.40 54.51 4.49
95 39.51 4.15 42.26 4.30 45.02 4.46 46.28 4.51 50.52 4.59 53.28 4.69
100 38.55 4.33 41.30 4.48 44.05 4.65 45.68 4.70 49.56 4.79 52.31 4.89
105 37.59 4.50 40.34 4.67 43.09 4.84 45.08 4.89 48.60 4.98 51.35 5.09
110 36.63 4.68 39.38 4.85 42.13 5.03 44.12 5.08 47.64 5.18 50.39 5.28
115 35.66 4.86 38.42 5.03 41.17 5.22 43.16 5.28 46.67 5.38 49.43 5.48
118 35.09 4.96 37.84 5.14 40.59 5.33 42.58 5.39 46.10 5.49 48.85 5.60
122 34.89 5.10 37.65 5.29 40.40 5.48 42.39 5.54 45.90 5.65 48.66 5.76
Ducted Indoor
Units
43 (80%)
14 39.81 2.38 42.28 2.46 44.75 2.55 46.54 2.58 49.70 2.63 52.17 2.69
20 39.78 2.41 42.25 2.50 44.72 2.59 46.50 2.62 49.66 2.67 52.13 2.72
25 39.75 2.45 42.22 2.54 44.69 2.63 46.47 2.66 49.62 2.71 52.09 2.76
30 39.72 2.48 42.19 2.57 44.65 2.66 46.43 2.70 49.59 2.75 52.05 2.80
35 39.69 2.51 42.15 2.61 44.62 2.70 46.40 2.73 49.55 2.78 52.01 2.84
40 39.66 2.55 42.12
2.64 44.58 2.74 46.36 2.77 49.51 2.82 51.97 2.88
45 39.63 2.58 42.09 2.68 44.55 2.78 46.33 2.81 49.47 2.86 51.93 2.92
50 39.60 2.62 42.06 2.71 44.52 2.81 46.29 2.84 49.43 2.90 51.89 2.96
55 39.57 2.65 42.02 2.75 44.48 2.85 46.26 2.88 49.40 2.94 51.85 2.99
60 39.54 2.69 41.99 2.78 44.45 2.89 46.22 2.92 49.36 2.97 51.81 3.03
65 39.51 2.72 41.96 2.82 44.41 2.92 46.19 2.96 49.32 3.01 51.77 3.07
70 39.48 2.75 41.93 2.85 44.38 2.96 46.15 2.99 49.28 3.05 51.73 3.11
75 38.53 2.90 40.97 3.01 43.42 3.12 45.18 3.15 48.31 3.21 50.75 3.28
80 37.58 3.05 40.02 3.16 42.46 3.28 44.22 3.32 47.33 3.38 49.77 3.45
85 36.63 3.20 39.07 3.32 41.50 3.44 43.26 3.48 46.37 3.54 48.80 3.61
90 35.69 3.35 38.12 3.47 40.55 3.60 42.30 3.64 45.40 3.71 47.83 3.78
95 34.67 3.50 37.09 3.62 39.50 3.76 40.61 3.80 44.33 3.87 46.75 3.95
100 33.83 3.65 36.24 3.78 38.66 3.92 40.08 3.96 43.49 4.04 45.90 4.12
105 32.98 3.79 35.40 3.93 37.81 4.08 39.56 4.12 42.64 4.20 45.06 4.28
110 32.14 3.94 34.55 4.09 36.97 4.24 38.71 4.28 41.80 4.36 44.22 4.45
115 31.29 4.09 33.71 4.24 36.12 4.40 37.87 4.45 40.96 4.53 43.37 4.62
118 30.79 4.18 33.20 4.33 35.62 4.49 37.36 4.54 40.45 4.63 42.86 4.72
122 30.62 4.30 33.03 4.46 35.45 4.62 37.19 4.67 40.28 4.76 42.70 4.86
Table 131: LMU540HV Cooling Capacity Table — Ducted Indoor Units (continued).
PERFORMANCE DATA
Cooling Capacity Tables
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.
MULTI F MAX OUTDOOR UNIT | 145
Multi F MAX Outdoor Unit Data
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