Multi F Outdoor Unit Engineering Manual

Combination
Capacity Index
(kBtu/h[%])
Outdoor Air
Temp.
Indoor Air Temp. °F DB
61 64 68 70 72 75
°F DB °F WB TC PI TC PI TC PI TC PI TC PI TC PI
Ducted Indoor
Units
38 (70%)
0 -0.4 21.55 2.45 20.31 2.55 20.28 2.58 19.82 2.61 19.45 2.62 18.63 2.72
5 4.5 24.85 2.55 23.70 2.64 23.34 2.69 22.84 2.72 22.45 2.75 21.54 2.84
10 9 27.05 2.64 25.96 2.73 25.38 2.80 24.87 2.83 24.46 2.86 23.49 2.95
17 15 29.48 2.76 28.46 2.84 27.64 2.93 27.10 2.98 26.66 3.02 25.64 3.11
20 19 30.95 2.83 29.97 2.92 29.00 3.02 28.45 3.08 28.00 3.12 26.94 3.21
25 23 33.41 2.97 32.42 3.06 31.29 3.18 30.70 3.24 30.22 3.29 29.09 3.38
30 28 35.87 3.13 34.76 3.23 33.56 3.33 32.95 3.40 32.45 3.46 31.26 3.55
35 32 38.32 3.28 37.10 3.39 35.84 3.48 35.20 3.56 34.68 3.63 33.43 3.72
40 36 40.28 3.37 39.15 3.49 37.90 3.59 37.24 3.66 36.72 3.72 35.39 3.82
45 41 42.72 3.49 41.70 3.61 40.47 3.72 39.80 3.79 39.26 3.84 37.83 3.96
47 43 43.70 3.54 42.72 3.66 41.50 3.77 40.82 3.84 40.28 3.89 38.81 4.01
50 46 43.82 3.52 42.94 3.62 41.88 3.73 41.27 3.79 40.78 3.83 39.41 3.93
55 51 44.04 3.48 43.31 3.57 42.51 3.65 42.02 3.69 41.63 3.73 40.40 3.81
60 56 44.25 3.44 43.68 3.51 43.14 3.58 42.77 3.60 42.47 3.62 41.39 3.68
63 59 44.38 3.42 43.90 3.48 43.52 3.53 43.22 3.55 42.98 3.56 41.98 3.60
68 64 44.51 3.40 44.12 3.44 43.90 3.48 43.67 3.49 43.49 3.50 42.58 3.53
Ducted Indoor
Units
32 (60%)
0 -0.4 18.14 2.03 17.10 2.11 17.07 2.14 16.69 2.16 16.38 2.17 15.69 2.25
5 4.5 20.92 2.11 19.95 2.19 19.65 2.23 19.23 2.26 18.90 2.28 18.14 2.35
10 9 22.78 2.18 21.86 2.26 21.37 2.32 20.94 2.35 20.59 2.37 19.78 2.45
17 15 24.82 2.28 23.96 2.35 23.27 2.43 22.81 2.47 22.45 2.50 21.59 2.57
20 19 26.06 2.35 25.23 2.42 24.42 2.50 23.95 2.55 23.58 2.59 22.68 2.66
25 23 28.13 2.46 27.29 2.53 26.34 2.63 25.85 2.68 25.45 2.73 24.49 2.80
30 28 30.20 2.59 29.26 2.67 28.26 2.76 27.74 2.82 27.33 2.87 26.32 2.94
35 32 32.27 2.71 31.24 2.81 30.18 2.88 29.64 2.95 29.20 3.00 28.15 3.08
40 36 33.91 2.79 32.96 2.89 31.91 2.97 31.36 3.03 30.91 3.08 29.79 3.17
45 41 35.97 2.89 35.11 2.99 34.07 3.08 33.51 3.14 33.06 3.18 31.86 3.28
47 43 36.79 2.93
35.97 3.03 34.94 3.13 34.37 3.18 33.91 3.22 32.68 3.32
50 46 36.90 2.91 36.15 3.00 35.26 3.09 34.75 3.13 34.34 3.17 33.18 3.26
55 51 37.08 2.88 36.46 2.95 35.79 3.02 35.38 3.06 35.05 3.09 34.01 3.15
60 56 37.26 2.85 36.77 2.91 36.32 2.96 36.01 2.98 35.76 3.00 34.85 3.05
63 59 37.37 2.83 36.96 2.88 36.64 2.92 36.39 2.94 36.19 2.95 35.35 2.98
68 64 37.48 2.82 37.15 2.85 36.96 2.88 36.77 2.89 36.62 2.90 35.86 2.92
Ducted Indoor
Units
27 (50%)
0 -0.4 15.31 1.69 14.43 1.75 14.41 1.78 14.08 1.79 13.82 1.80 13.24 1.87
5 4.5 17.65 1.75 16.84 1.82 16.58 1.85 16.23 1.87 15.95 1.89 15.31 1.95
10 9 19.22 1.81 18.45 1.87 18.03 1.92 17.67 1.95 17.37 1.97 16.69 2.03
17 15 20.95 1.89 20.22 1.95 19.63 2.02 19.25 2.05 18.94 2.08 18.21 2.14
20 19 21.99 1.95 21.29 2.01 20.61 2.08 20.21 2.12 19.89 2.15 19.14 2.21
25 23 23.73 2.04 23.03 2.10 22.23 2.18 21.81 2.23 21.47 2.26 20.66 2.32
30 28 25.48 2.15 24.69 2.22 23.84 2.29 23.41 2.34 23.06 2.38 22.21 2.44
35 32 27.23 2.25 26.36 2.33 25.46 2.39 25.00 2.45 24.64 2.49 23.75 2.56
40 36 28.61 2.32 27.81 2.40 26.92 2.47 26.46 2.52 26.08 2.56 25.14 2.63
45 41 30.35 2.40 29.62 2.48 28.75 2.56 28.27 2.61 27.89 2.64 26.88 2.72
47 43 31.04 2.43 30.35 2.51 29.48 2.60 29.00 2.64 28.61 2.68 27.57 2.76
50 46 31.13 2.42 30.51 2.49 29.75 2.56 29.32 2.60 28.97 2.63 28.00 2.70
55 51 31.29 2.39 30.77 2.45 30.20 2.51 29.85 2.54 29.57 2.56 28.70 2.62
60 56 31.44 2.37 31.03 2.41 30.65 2.46 30.38 2.48 30.17 2.49 29.40 2.53
63 59 31.53 2.35 31.19 2.39 30.92 2.43 30.70 2.44 30.53 2.45 29.83 2.48
68 64 31.62 2.34 31.34 2.37 31.19 2.39 31.03 2.40 30.90 2.41 30.25 2.43
Table 146: LMU540HV Heating Capacity Table — Ducted Indoor Units (continued).
PERFORMANCE DATA
Heating 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 heating capacity rating obtained with air entering the indoor unit at 70ºF dry bulb (DB) and
60ºF wet bulb (WB), and outdoor ambient conditions of 47ºF dry bulb (DB) and 43ºF wet bulb (WB).
Due to our policy of continuous product innovation, some specications may change without notication.
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160 | MULTI F MAX OUTDOOR UNIT
Multi F and Multi F MAX Heat Pump System Engineering Manual
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