Multi F Outdoor Unit Engineering Manual

MULTI F MAX OUTDOOR UNIT
General Data
Table 115: Multi F MAX Outdoor Unit General Data.
Model Number
LMU540HV
Rated Cooling Capacity (Btu/h)
1
52,500
Rated Heating Capacity (Btu/h)
1
58,000
Operating Range
Cooling (°F DB)
14 - 118
Heating (°F WB)
0 - 64
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 Volume (CFM)
2,119 x 2
Unit Data
Refrigerant Type
R410A
Refrigerant Control/Location
EEV / Outdoor Unit, Branch Distribution Unit
Min. Number Indoor Units/System
2
2
Max. Number Indoor Units/System
2
8
Maximum Allowable Total Indoor Unit Connected Capacity (Btu/h)
73,000
Sound Pressure ±3 dB(A)
3
(Cooling / Heating)
54 / 56
Net Unit Weight (lbs.)
213.8
Shipping Weight (lbs.)
236
Power Wiring / Communication Cables
4
(No. x AWG)
4 x 16
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
Piping
Liquid Line Connection (in., OD) x Qty.
3/8 x 1
Vapor Line Connection (in., OD) x Qty.
3/4 x 1
Factory Charge lbs. of R410A
9.7
Piping Lengths
Maximum Total System Piping (ft.)
5
476
Maximum Main Pipe Length (Outdoor Unit to Branch Distribution Unit [ft.])
180
Total Branch Piping (Branch Distribution Units to all Indoor Units [ft.])
295
Maximum Branch Pipe Length (Length between each BDU and IDU [ft.])
49
Maximum Outdoor Unit to Indoor Unit Pipe Length (ft.)
230
Piping Length (No Additional Refrigerant [ft.]; 16 ft. of Main Piping + 131 ft. of
Branch Piping)
147
Maximum Elevation between Outdoor Unit and Indoor Unit (ft.)
98
Maximum Elevation between Indoor Unit and Indoor Unit (ft.)
49
Maximum Elevation between Branch Distribution Unit and Indoor Unit (ft.)
33
Maximum Elevation between Branch Distribution Unit and Branch Distribution Unit (ft.)
49
1
Rated capacity applied with non-ducted indoor units, and is rated 0 ft. above sea level with 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 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 should
be connected. For allocated capacity information, see the combination tables on pages 131 to 136.
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
All power wiring / communication cable to be minimum 16 AWG from the outdoor unit to the BD unit,
and 18 AWG from the BD unit to the indoor unit, stranded, shielded, and must comply with applicable
local and national codes. For detailed electrical information, please refer to electric characteristics on
page 165.
5
Piping lengths are equivalent.
Due to our policy of continuous product innovation, some specications may change without notication.
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Multi F and Multi F MAX Heat Pump System Engineering Manual
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