LGRED Heat Installation Manual

MULTI
F
MAX
MULTI
F
WITH
12
MULTI F / MULTI F MAX with LGRED Outdoor Unit Installation Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
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GENERAL DATA
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Model Number LMU360HHV LMU420HHV
Capacity
Nominal 36,000 42,000
Cooling (Btu/h) (Min.~Rated~ Max.)
1
11,700~36,000~46,733 11,700~42,000~53,897
Cooling Power Input (kW) (Min.~Rated~ Max.) 0.72 ~ 2.40 ~ 3.75 0.72 ~ 3.00 ~ 4.34
Cooling Running Current (A) (Min.~Rated~ Max.) 3.9 ~ 13.0 ~ 20.4 3.9 ~ 16.3 ~ 23.6
Heating (Btu/h)
(Min.~Rated~ Max.)
1
13,455~41,000~50,200 13,455~45,000~55,256
Heating Power Input (kW) (Min.~Rated~ Max.) 0.96 ~ 2.93 ~ 3.94 0.96 ~ 3.30 ~ 4.48
Heating Running Current (A) (Min.~Rated~ Max.) 5.2 ~ 15.9 ~ 21.4 5.2 ~ 17.9 ~ 24.3
Operating Range
Cooling (°F DB)
2
14 to +118
Heating (°F WB) -13 to +75
Compressor
Inverter Quantity Twin Rotary x 1
Oil / Type FVC68D
Fan (Side Discharge)
Type Propeller
Motor Output (W) x Qty. 124.2 x 2
Motor / Drive Brushless Digitally Controlled / Direct
Maximum Air Flow Rate (ft.
3
/ min.) 2,119 x 2
Unit Data
Refrigerant Type R410A
Refrigerant Control / Location Electronic Expansion Valve / Outdoor Unit
Min. Number Indoor Units / System
3
2
Max. Number Indoor Units / System
3
56
Max. Number of Branch Distribution Units 2
Maximum Allowable Total Indoor Unit Connected Capacity (Btu/h) 48,000 56,000
Sound Pressure ±3 dB(A) (Cooling / Heating) dB(A)
4
54 / 57
Dimensions (W x H x D [inch]) 37-13/32 x 54-11/32 x 13
Net Unit Weight (lbs.) 222.7
Power Supply (V, Phase, Hz) 208 / 230V, 1, 60
Communication / Connection (Power) Cable from ODU & BDU / BDU & IDU (No. X AWG)
5,6
4C x 16 / 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 32 x 14) x 2, (1 x 32 x 14) x 2
Piping
Liquid Line Connection (in., O.D.) x Qty. Ø3/8 x 1 Ø3/8 x 1
Vapor Line Connection (in., O.D.) x Qty. Ø3/4 x 1 Ø3/4 x 1
Factory Charge oz. of R410A 197.5
Additional Charging Volume (oz. / ft.)
Main Pipe 0.54
Branch Pipe 0.22
Piping Lengths
Maximum Total Piping (ft.)
7
475.7
Maximum Piping Length (No Additional Refrigerant [ft.]) 16.4 ft. of Main Piping +131.2 ft. of Branch Piping
Maximum Main Pipe Length (Outdoor Unit to Branch Distribution Unit [ft.]) 180.4
Total Branch Piping (Branch Distribution Unit to all Indoor Units [ft.]) 295.3
Maximum Branch Pipe Length (Length between each BDU & IDU [ft.]) 49.2
Maximum Outdoor Unit to Indoor Unit Pipe Length (ft.) 82.0
Maximum Elevation between Outdoor Unit and Indoor Unit (ft.) 98.4
Maximum Elevation between Indoor Unit and Indoor Unit (ft.) 49.2
Maximum Elevation between Branch Distribution Unit and Indoor Unit (ft.) 32.8
Maximum Elevation between Branch Distribution Unit and Branch Distribution Unit (ft.) 49.2
1
Rated capacity applied with non-ducted indoor units, and is rated 0 ft. above sea level with a 0 ft. level differ-
ence 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
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3
At least one Branch Distribution Unit is required for system operation; a maximum of two can be
installed per outdoor unit with use of Y-branch accessory (PMBL5620). At least two indoor units must be
connected. For allocated capacity information, see the combination tables in the “Multi F / Multi F MAX
with LGRED Combination Data Manual” on www.lg-dfs.com. For performance data, see “Multi F / Multi
F MAX with LGRED Performance Data Manual” on www.lg-dfs.com.
4
Sound pressure levels are tested in an anechoic chamber under ISO Standard 3745. These values can
increase due to ambient conditions during operation.
5
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ble local and national codes. For detailed information, please refer to electrical characteristics on page
13.
6
All communications / connection (power) cable must be a minimum of 16 AWG from the outdoor unit
to the BD unit, and 18 AWG from the BD 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 13.
7
Piping lengths are equivalent.