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8
MULTI F / MULTI F MAX Outdoor Unit Installation Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
MULTI
F
MAX
MULTI
F
SPECIFICATIONS
Model Number LMU18CHV LMU24CHV LMU30CHV LMU36CHV
Cooling Capacity (Btu/h)
1
(Min.~Rated~ Max.) 8,400~17,000~19,000 8,400~20,000~25,000 8,400~30,000~36,000 8,400~32,000~38,400
Heating Capacity (Btu/h)
1
(Min.~Rated~ Max.) 10,248~22,000~24,000 9,240~24,000~28,800 9,240~32,000~38,400 9,240~36,000~41,600
Operating Range
Cooling (°F DB) 14
7
- 118 14
7
- 118 14
7
- 118 14
7
- 118
Heating (°F WB) -4 - 64 -4 - 64 -4 - 64 -4 - 64
Compressor
Inverter Quantity Twin Rotary x 1 Twin Rotary x 1 Twin Rotary x 1 Twin Rotary x 1
Oil Type FVC68D FVC68D FVC68D FVC68D
Fan (Side Discharge)
Type Propeller Propeller Propeller Propeller
Motor Output (W) x Qty. 85.4 x 1 85.4 x 1 124.2 x 1 124.2 x 1
Motor/Drive Brushless Digitally Controlled / Direct
Maximum Air Volume (CFM) 1,766 1,766 2,119 2,119
Unit Data
Refrigerant Type R410A R410A R410A R410A
Refrigerant Control/Location EEV/Outdoor Unit EEV/Outdoor Unit EEV/Outdoor Unit EEV/Outdoor Unit
Min. Number Indoor Units/System
2
2222
Max. Number Indoor Units/System
2
2344
Maximum Allowable Total Indoor Unit
Connected Capacity (Btu/h)
24,000 33,000 40,000 48,000
Sound Pressure (Cooling / Heating) dB(A)
3
49 / 52 49 / 52 52 / 55 52 / 55
Net Unit Weight (lbs.) 100 100 137 137
Shipping Weight (lbs.) 108 108 148 148
Power Wiring / Communications Cable
(No. x AWG)
4,5
4C x 18 4C x 18 4C x 18 4C x 18
Heat Exchanger
Material and Fin Coating Copper Tube/Aluminum Fin and GoldFin™/Hydrophilic
Rows/Columns/Fins per inch x Qty. (2 x 28 x 14) x 1 (2 x 28 x 14) x 1 (2 x 38 x 14) x 1 (2 x 38 x 14) x 1
Piping
Liquid Line Connection (in., OD) x Qty. 1/4 x 2 1/4 x 3 1/4 x 4 1/4 x 4
Vapor Line Connection (in., OD) x Qty. 3/8 x 2 3/8 x 3 3/8 x 4 3/8 x 4
Factory Charge lbs. of R410A 3.96 3.96 6.18 6.18
Piping Lengths
Maximum Total Piping (ft.)
6
164.0 246.1 246.1 246.1
Maximum Outdoor Unit to Indoor Unit Piping (ft) 82.0 82.0 82.0 82.0
Piping Length (No Additional Refrigerant [ft]) 49.2 73.8 98.4 98.4
Maximum Elevation between Outdoor Unit
and Indoor Unit (ft.)
49.2 49.2 49.2 49.2
Maximum Elevation between Indoor Unit and
Indoor Unit (ft.)
24.6 24.6 24.6 24.6
Table 1: 0XOWL)2XWGRRU8QLW6SHFL¿FDWLRQV
1
Rated capacity applied with non-ducted indoor units, and is rated 0 ft. above sea level
with 25 ft. of refrigerant line per indoor unit and a 0 ft. level difference between outdoor and
indoor units. All capacities are net with a combination ratio between 95 – 105%.
Rated cooling capacity 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).
Rated heating capacity 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).
2
At least two indoor units should be connected. For allocated capacity information, see
the combination tables in the "Multi F / Multi F MAX Combination Data Manual" on www.
lg-dfs.com. For performance data, see "Multi F / Multi F MAX Performance Data Manual"
on www.lg-dfs.com.
3
Sound pressure levels are tested in an anechoic chamber under ISO Standard 3745 and
are the same in both cooling and heating mode. These values can increase due to ambient
conditions during operation.
4
3RZHUZLULQJWRWKHRXWGRRUXQLWLV¿HOGVXSSOLHGVROLGRUVWUDQGHGDQGPXVWFRPSO\ZLWK
the applicable local and national codes. For detailed information, please refer to electrical
characteristics on page 11.
5
All power wiring / communication cable to be minimum 18 AWG from the outdoor unit to
the indoor unit, stranded, shielded or unshielded (if shielded, it must be grounded to the
chassis of the outdoor unit only), and must comply with applicable local and national codes.
For detailed electrical information, please refer to electric characteristics on page 11.
6
Piping lengths are equivalent.
7
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cooling mode.
Multi F Outdoor Units
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