Engineering Bulletin
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150 | MULTI F OUTDOOR UNIT
Multi F and Multi F MAX Heat Pump System Engineering Manual
MULTI
F
MAX
MULTI
F
Connected Indoor
Units
Combination
Capacity
Index
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
Three (3) Mixed
Indoor Units
7 + 9 + 12
14 25.73 1.50 27.33 1.55 28.93 1.61 30.08 1.63 32.13 1.66 33.72 1.69
20 25.71 1.52 27.31 1.57 28.91 1.63 30.06 1.65 32.10 1.68 33.70 1.71
25 25.69 1.54 27.29 1.60 28.88 1.65 30.04 1.67 32.08 1.70 33.67 1.74
30 25.67 1.56 27.27 1.62 28.86 1.68 30.01 1.70 32.05 1.73 33.65 1.76
35 25.65 1.58 27.25 1.64 28.84 1.70 29.99 1.72 32.03 1.75 33.62 1.79
40 25.63 1.60 27.23 1.66 28.82 1.72 29.97 1.74 32.00 1.78 33.59 1.81
45 25.62 1.62 27.21 1.68 28.80 1.75 29.95 1.77 31.98 1.80 33.57 1.83
50 25.60 1.65 27.19 1.71 28.77 1.77 29.92 1.79 31.95 1.82 33.54 1.86
55 25.58 1.67 27.16 1.73 28.75 1.79 29.90 1.81 31.93 1.85 33.52 1.88
60 25.56 1.69 27.14 1.75 28.73 1.81 29.88 1.84 31.90 1.87 33.49 1.91
65 25.54 1.71 27.12 1.77 28.71 1.84 29.85 1.86 31.88 1.89 33.47 1.93
70 25.52 1.73 27.10 1.80 28.69 1.86 29.83 1.88 31.86 1.92 33.44 1.96
75 24.90 1.83 26.48 1.89 28.06 1.96 29.21 1.98 31.23 2.02 32.81 2.06
80 24.29 1.92 25.87 1.99 27.44 2.06 28.58 2.09 30.60 2.12 32.17 2.17
85 23.68 2.01 25.25 2.09 26.83 2.16 27.96 2.19 29.97 2.23 31.55 2.27
90 23.07 2.11 24.64 2.18 26.21 2.26 27.34 2.29 29.35 2.33 30.92 2.38
95 22.41 2.20 23.97 2.28 25.53 2.36 26.25 2.39 28.66 2.44 30.22 2.48
100 21.87 2.29 23.43 2.38 24.99 2.46 25.91 2.49 28.11 2.54 29.67 2.59
105 21.32 2.39 22.88 2.47 24.44 2.56 25.57 2.59 27.56 2.64 29.13 2.70
110 20.77 2.48 22.34 2.57 23.90 2.66 25.02 2.70 27.02 2.75 28.58 2.80
115 20.23 2.57 21.79 2.67 23.35 2.76 24.48 2.80 26.47 2.85 28.03 2.91
118 19.90 2.63 21.46 2.73 23.02 2.82 24.15 2.86 26.15 2.91 27.71 2.97
122 19.79 2.70 21.35 2.80 22.91 2.91 24.04 2.94 26.04 2.99 27.60 3.05
9 + 9 + 12
14 27.57 1.57 29.28 1.62 31.00 1.68 32.23 1.70 34.42 1.73 36.13 1.77
20 27.55 1.59 29.26 1.65 30.97 1.71 32.21 1.73 34.39 1.76 36.10 1.79
25 27.53 1.61 29.24 1.67 30.95 1.73 32.18 1.75 34.37 1.78 36.08 1.82
30 27.51 1.63 29.22 1.69 30.92 1.75 32.16 1.78 34.34 1.81 36.05 1.84
35 27.49 1.66 29.19 1.72 30.90 1.78 32.13 1.80 34.31 1.83 36.02 1.87
40 27.47 1.68 29.17 1.74
30.88 1.80 32.11 1.82 34.29 1.86 35.99 1.90
45 27.44 1.70 29.15 1.76 30.85 1.83 32.08 1.85 34.26 1.88 35.97 1.92
50 27.42 1.72 29.13 1.79 30.83 1.85 32.06 1.87 34.24 1.91 35.94 1.95
55 27.40 1.75 29.10 1.81 30.81 1.88 32.04 1.90 34.21 1.93 35.91 1.97
60 27.38 1.77 29.08 1.83 30.78 1.90 32.01 1.92 34.18 1.96 35.88 2.00
65 27.36 1.79 29.06 1.86 30.76 1.92 31.99 1.95 34.16 1.98 35.86 2.02
70 27.34 1.81 29.04 1.88 30.74 1.95 31.96 1.97 34.13 2.01 35.83 2.05
75 26.68 1.91 28.38 1.98 30.07 2.05 31.29 2.08 33.46 2.12 35.15 2.16
80 26.02 2.01 27.71 2.08 29.40 2.16 30.62 2.18 32.78 2.22 34.47 2.27
85 25.37 2.11 27.06 2.18 28.74 2.26 29.96 2.29 32.11 2.33 33.80 2.38
90 24.72 2.20 26.40 2.29 28.08 2.37 29.30 2.40 31.44 2.44 33.13 2.49
95 24.01 2.30 25.68 2.39 27.36 2.47 28.13 2.50 30.70 2.55 32.38 2.60
100 23.43 2.40 25.10 2.49 26.77 2.58 27.76 2.61 30.12 2.66 31.79 2.71
105 22.84 2.50 24.52 2.59 26.19 2.68 27.40 2.71 29.53 2.77 31.21 2.82
110 22.26 2.60 23.93 2.69 25.60 2.79 26.81 2.82 28.95 2.87 30.62 2.93
115 21.67 2.69 23.35 2.79 25.02 2.89 26.23 2.93 28.36 2.98 30.04 3.04
118 21.32 2.75 22.99 2.85 24.67 2.96 25.88 2.99 28.01 3.05 29.69 3.11
122 21.21 2.83 22.88 2.93 24.55 3.04 25.76 3.08 27.90 3.13 29.57 3.20
Table 143: LMU36CHV 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 25 ft. of refrigerant piping.
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 rows indicate reference data. When operating at this temperature, these values can
be different if the system is not running consistently.
PERFORMANCE DATA
Cooling Capacity Tables