48
Four-Way Ceiling Cassette System Engineering Manual
Due to our policy of continuous product innovation, some specications may change without notication.
© LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
Model No. /
Nominal Capacity
(Btu/h)
Outdoor Air Temp. Indoor Air Temp. °F DB
°F DB °F WB
61 64 68 70 72 75
TC PI TC PI TC PI TC PI TC PI TC PI
LC187HV / 18,000
0 -0.4 8.96 1.12 8.42 1.16 8.43 1.18 8.24 1.19 8.08 1.20 7.74 1.24
5 4.5 10.89 1.14 10.37 1.18 10.23 1.20 10.01 1.22 9.84 1.23 9.44 1.27
10 9 12.18 1.15 11.69 1.19 11.43 1.22 11.20 1.24 11.01 1.25 10.58 1.29
17 15 13.60 1.17 13.13 1.21 12.75 1.25 12.50 1.27 12.30 1.29 11.83 1.32
20 19 14.46 1.19 14.00 1.22 13.55 1.27 13.29 1.29 13.08 1.31 12.59 1.35
25 23 15.90 1.22 15.43 1.25 14.89 1.30 14.61 1.32 14.38 1.35 13.84 1.38
30 28 17.34 1.25 16.80 1.29 16.22 1.33 15.93 1.36 15.69 1.38 15.11 1.42
35 32 18.78 1.28 18.18 1.33 17.56 1.36 17.24 1.39 16.99 1.42 16.38 1.45
40 36 19.73 1.32 19.18 1.36 18.57 1.40 18.25 1.43 17.99 1.45 17.34 1.49
45 41 20.93 1.36 20.43 1.41 19.83 1.45 19.50 1.48 19.24 1.50 18.54 1.55
47 43 21.41 1.38 20.93 1.43 20.33 1.47 20.00 1.50 19.73 1.52 19.02 1.57
50 46 21.47 1.37 21.04 1.42 20.52 1.46 20.22 1.48 19.98 1.50 19.31 1.54
55 51 21.58 1.36 21.22 1.39 20.83 1.43 20.59 1.44 20.40 1.46 19.79 1.49
60 56 21.68 1.35 21.40 1.37 21.14 1.40 20.95 1.41 20.81 1.42 20.28 1.44
63 59 21.74 1.34 21.51 1.36 21.32 1.38 21.18 1.39 21.06 1.39 20.57 1.41
68 64 21.81 1.33 21.62 1.34 21.51 1.36 21.40 1.36 21.31 1.37 20.86 1.38
Table 27: LC187HV System Heating Capacity Table.
TC = Total Capacity (kBtu/h).
PI = Power input (KW). Power input (KW) includes compressor and fan(s).
Nominal capacity as rated 0 ft. above sea level and a 0 ft. level difference between outdoor and indoor
unit. Corresponding refrigerant piping length is accordance with standard length of each outdoor unit.
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).
PERFORMANCE DATA
Heating Capacity Tables
Table 28: LC188HV4 System Heating Capacity Table.
TC = Total Capacity (kBtu/h).
PI = Power input (KW). Power input (KW) includes compressor and fan(s).
Nominal capacity as rated 0 ft. above sea level and a 0 ft. level difference between outdoor and indoor
unit. Corresponding refrigerant piping length is accordance with standard length of each outdoor unit.
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).
Model No. /
Nominal Capacity
(Btu/h)
Outdoor Air Temp. Indoor Air Temp. °F DB
°F DB °F WB
61 64 68 70 72 75
TC PI TC PI TC PI TC PI TC PI TC PI
LC188HV4 / 18,000
-4 -4.4 9.61 6.86 8.97 7.08 8.87 7.30 8.76 7.42 8.67 7.51 8.29 7.73
0 -0.4 10.70 6.43 10.10 6.64 9.92 6.84 9.78 6.96 9.66 7.05 9.26 7.25
5 4.5 12.01 5.91 11.46 6.10 11.18 6.29 10.99 6.39 10.85 6.47 10.41 6.66
10 9 12.88 5.43 12.36 5.60 12.01 5.78 11.81 5.87 11.64 5.95 11.18 6.12
17 15 13.84 4.79 13.36 4.94 12.93 5.10 12.70 5.18 12.51 5.25 12.03 5.40
20 19 14.42 4.36 13.96 4.50 13.49 4.64 13.24 4.72 13.04 4.78 12.55 4.92
25 23 15.39 3.93 14.94 4.06 14.42 4.19 14.15 4.26 13.93 4.31 13.40 4.44
30 28 16.38 3.40 15.87 3.51 15.33 3.62 15.05 3.68 14.82 3.73 14.28 3.84
35 32 17.37 2.97 16.82 3.07 16.24 3.17 15.95 3.22 15.72 3.26 15.15 3.36
40 36 18.25 2.55 17.74 2.63 17.18 2.71 16.88 2.76 16.64 2.79 16.04 2.88
45 41 19.36 2.01 18.90 2.08 18.34 2.14 18.04 2.18 17.79 2.21 17.15 2.28
47 43 19.80 1.80 19.36 1.86 18.81 1.92 18.50 1.95 18.25 1.98 17.59 2.04
50 46 19.86 1.79 19.46 1.84 18.98 1.89 18.70 1.92 18.48 1.94 17.86 2.00
55 51 19.96 1.77 19.63 1.81 19.26 1.85 19.04 1.88 18.87 1.89 18.31 1.93
60 56 20.06 1.75 19.79 1.78 19.55 1.82 19.38 1.83 19.25 1.84 18.76 1.87
63 59 20.11 1.74 19.89 1.77 19.72 1.79 19.59 1.80 19.48 1.81 19.03 1.83
68 64 20.17 1.73 19.99 1.75 19.90 1.77 19.79 1.77 19.71 1.78 19.30 1.79
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