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
Mixed Indoor
Units
32 (60%)
14 30.07 1.56 31.93 1.62 33.80 1.68 35.15 1.70 37.53 1.73 39.40 1.77
20 30.04 1.59 31.91 1.64 33.77 1.70 35.12 1.72 37.51 1.76 39.37 1.79
25 30.02 1.61 31.88 1.67 33.75 1.73 35.10 1.75 37.48 1.78 39.34 1.82
30 30.00 1.63 31.86 1.69 33.72 1.75 35.07 1.77 37.45 1.81 39.31 1.84
35 29.97 1.65 31.84 1.71 33.70 1.78 35.04 1.80 37.42 1.83 39.28 1.87
40 29.95 1.68 31.81 1.74 33.67 1.80 35.01 1.82 37.39 1.86 39.25 1.89
45 29.93 1.70 31.79 1.76 33.65 1.83 34.99 1.85 37.36 1.88 39.22 1.92
50 29.91 1.72 31.76 1.78 33.62 1.85 34.96 1.87 37.33 1.91 39.19 1.94
55 29.88 1.74 31.74 1.81 33.59 1.87 34.93 1.90 37.31 1.93 39.16 1.97
60 29.86 1.77 31.71 1.83 33.57 1.90 34.91 1.92 37.28 1.96 39.13 2.00
65 29.84 1.79 31.69 1.85 33.54 1.92 34.88 1.94 37.25 1.98 39.10 2.02
70 29.81 1.81 31.67 1.88 33.52 1.95 34.85 1.97 37.22 2.01 39.07 2.05
75 29.10 1.91 30.94 1.98 32.79 2.05 34.12 2.08 36.48 2.11 38.33 2.16
80 28.38 2.01 30.22 2.08 32.06 2.16 33.39 2.18 35.75 2.22 37.59 2.27
85 27.67 2.10 29.51 2.18 31.34 2.26 32.67 2.29 35.02 2.33 36.86 2.38
90 26.96 2.20 28.79 2.28 30.62 2.37 31.95 2.39 34.29 2.44 36.12 2.49
95 26.18 2.30 28.01 2.38 29.83 2.47 30.67 2.50 33.48 2.55 35.31 2.60
100 25.55 2.40 27.37 2.49 29.20 2.58 30.27 2.61 32.84 2.66 34.67 2.71
105 24.91 2.50 26.73 2.59 28.56 2.68 29.88 2.71 32.21 2.76 34.03 2.82
110 24.27 2.59 26.10 2.69 27.92 2.79 29.24 2.82 31.57 2.87 33.39 2.93
115 23.63 2.69 25.46 2.79 27.28 2.89 28.60 2.92 30.93 2.98 32.76 3.04
118 23.25 2.75 25.08 2.85 26.90 2.95 28.22 2.99 30.55 3.04 32.37 3.11
122 23.12 2.83 24.95 2.93 26.77 3.04 28.09 3.07 30.42 3.13 32.24 3.19
Mixed Indoor
Units
27 (50%)
14 25.37 1.20 26.95 1.24 28.52 1.28 29.66 1.30 31.67 1.32 33.25 1.35
20 25.35 1.21 26.93 1.26 28.50 1.30 29.64 1.32 31.65 1.34 33.22 1.37
25 25.33 1.23 26.90 1.27 28.48 1.32 29.61 1.34 31.62 1.36 33.20 1.39
30 25.31 1.25 26.88 1.29 28.46 1.34 29.59 1.35 31.60 1.38 33.17 1.41
35 25.29 1.26 26.86 1.31 28.43 1.36 29.57 1.37 31.58 1.40 33.15 1.43
40 25.27 1.28 26.84
1.33 28.41 1.38 29.55 1.39 31.55 1.42 33.12 1.45
45 25.25 1.30 26.82 1.35 28.39 1.39 29.52 1.41 31.53 1.44 33.10 1.47
50 25.23 1.32 26.80 1.36 28.37 1.41 29.50 1.43 31.50 1.46 33.07 1.49
55 25.22 1.33 26.78 1.38 28.35 1.43 29.48 1.45 31.48 1.48 33.05 1.51
60 25.20 1.35 26.76 1.40 28.33 1.45 29.46 1.47 31.46 1.49 33.02 1.52
65 25.18 1.37 26.74 1.42 28.30 1.47 29.43 1.49 31.43 1.51 32.99 1.54
70 25.16 1.38 26.72 1.43 28.28 1.49 29.41 1.50 31.41 1.53 32.97 1.56
75 24.55 1.46 26.11 1.51 27.67 1.57 28.79 1.59 30.79 1.62 32.34 1.65
80 23.95 1.53 25.50 1.59 27.06 1.65 28.18 1.67 30.17 1.70 31.72 1.73
85 23.35 1.61 24.90 1.67 26.45 1.73 27.57 1.75 29.55 1.78 31.10 1.82
90 22.75 1.68 24.29 1.74 25.84 1.81 26.96 1.83 28.93 1.86 30.48 1.90
95 22.10 1.76 23.63 1.82 25.17 1.89 25.88 1.91 28.25 1.95 29.79 1.98
100 21.56 1.83 23.10 1.90 24.64 1.97 25.54 1.99 27.71 2.03 29.25 2.07
105 21.02 1.91 22.56 1.98 24.10 2.05 25.21 2.07 27.18 2.11 28.72 2.15
110 20.48 1.98 22.02 2.05 23.56 2.13 24.67 2.15 26.64 2.19 28.18 2.24
115 19.94 2.06 21.48 2.13 23.02 2.21 24.13 2.23 26.10 2.28 27.64 2.32
118 19.62 2.10 21.16 2.18 22.70 2.26 23.81 2.28 25.78 2.33 27.32 2.37
122 19.51 2.16 21.05 2.24 22.59 2.32 23.70 2.35 25.67 2.39 27.21 2.44
PERFORMANCE DATA
Cooling Capacity Tables
Table 138: LMU540HV Cooling Capacity Table — Mixed 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.
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152 | MULTI F MAX OUTDOOR UNIT
Multi F and Multi F MAX Heat Pump System Engineering Manual
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