Multi F Engineering Manual

MULTI F MAX OUTDOOR UNIT
General Data
Table 20: Multi F MAX Outdoor Unit General Data.
Model Number
LMU481HV LMU541HV LMU601HV
Capacity
Cooling (Btu/h) (Minimum ~ Rated ~ Maximum)
1
10,800~48,000~58,000 10,800~50,500~63,200 10,800~60,000~65,000
Cooling Power Input (kW) (Min.~Rated~ Max.)
0.66~3.75~5.20 0.66~4.01~5.71 0.64~5.31~5.81
Cooling Running Current (A) (Min.~Rated~ Max.)
3.0~17.0~23.6 3.0~18.2~25.9 2.9~24.0~26.3
Heating (Btu/h) (Minimum ~ Rated ~ Maximum)
1
12,420~54,000~59,000 12,420~58,000~64,000 12,420~64,000~68,000
Heating Power Input (kW) (Min.~Rated~ Max.)
0.75~4.52~5.28 0.75~5.07~5.83 0.71~5.44~5.87
Heating Running Current (A) (Min.~Rated~ Max.)
3.4~20.5~23.9 3.4~23.0~26.4 3.2~24.6~26.6
Operating Range
Cooling (°F DB)
14
7
to 118
Heating (°F WB)
-4 to +64
Compressor
Inverter Quantity
Scroll 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 Volume (CFM)
1,942 x 2 2,119 x 2
Unit Data
Refrigerant Type
R410A
Refrigerant Control / Location
Electronic Expansion Valve / Outdoor Unit
Min. ~ Max. Number Indoor Units/System
2
2 ~ 8 2 ~ 8 2 ~8
Max. Number of Branch Distribution Units
2
Min. ~ Max. Allowable Total Indoor Unit Connected Capacity (Btu/h)
18,000 ~ 65,000 18,000 ~ 73,000 18,000 ~ 81,000
Sound Pressure ±3 dB(A) (Cooling / Heating)
3
53 / 55 56 / 58
Dimensions (W x H x D [inch])
37-13/32 x 54-11/32 x 13
Net / Shipping Unit Weight (lbs.)
192 / 216 218 / 243
Power Supply (V, Phase, Hz)
208 / 230V, 1, 60
Comm. / Conn. (Power) Cable from ODU & BDU / BDU & IDU (No. X AWG)
4,5
4C x 14 / 4C x 14
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 (3 x 32 x 14) x 2
Piping
Liquid Line Connection (in., OD) x Qty.
Ø3/8 x 1
Vapor Line Connection (in., OD) x Qty.
Ø3/4 x 1
Factory Charge oz. of R410A
148.2 183.4
Additional Charging Volume (oz. / ft.)
Main Pipe
0.54
Branch Pipe
0.22
Piping Lengths
Maximum Total System Piping (ft.)
6
475.7
Piping Length (No Additional Refrigerant [ft.] Main+Branch)
16.4+131.2 16.4+131.2 49.2 + 131.2
Maximum Main Pipe Length (ODU to BDU [ft.])
180.4
Total Branch Piping (BDU to all IDUs [ft.])
295.3
Maximum Branch Pipe Length (Length between each BDU and IDU [ft.])
49.2
Maximum Outdoor Unit to Indoor Unit Pipe Length (ft.)
229.6
Maximum Elevation between ODU and IDU (ft.)
98.4
Maximum Elevation between IDU and IDU (ft.)
49.2
Maximum Elevation between BDU and IDU (ft.)
32.8
Maximum Elevation between BDU and BDU (ft.)
49.2
1
Capacity is rated with non-ducted IDUs, 0 ft. above sea level, with a 0 ft. level difference between ODU and
IDUs, and the following refrigerant pipe lengths:
LMU481 / 541 / 601HV: 16.4 ft. Main + (16.4 ft. Branch x 8) = 147.6 ft.
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 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 Combination Data Manual” on www.lghvac.com. For performance data, see “Multi F / Multi F MAX
Performance Data Manual” on www.lghvac.com.
3
Sound pressure levels are tested in an anechoic chamber under ISO Standard 3745. These values can
increase due to ambient conditions during operation.
4
Power wiring to the outdoor unit is field supplied, solid or stranded, and must comply with the ap-
plicable local and national codes. For detailed information, please refer to electrical characteristics on
page 33.
5
All power wiring / communication cable to be minimum 14 AWG, 4-conductor from the outdoor unit to
the BD unit (Multi F MAX systems only), and 14 AWG, 4-conductor 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 33.
6
Piping lengths are equivalent.
7
Cooling operation range with Low Ambient Wind Baffle Kit (sold separately) is -4°F to +118°F.
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32 | MULTI F MAX OUTDOOR UNIT
Multi F and Multi F MAX Heat Pump System Engineering Manual
MULTI
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