KUMXA481A Multi F MAX with Outdoor Unit
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Specifications:
Performance:
- Cooling Capacity: 10,800 – 48,000 – 58,000 Btu/h
- Heating Capacity: 12,420 – 52,500 – 59,000 Btu/h
Electrical:
- Power Supply: 208-230V, 60Hz, 1 Phase
- Maximum Overcurrent Protection (MOP): 40 A
- Minimum Circuit Ampacity (MCA): 33.3 A
Unit Data:
- Refrigerant Type: R32
- Refrigerant Control: EEV
- Refrigerant Charge: 9.262 lbs.
Product Usage Instructions:
Installation:
- Ensure proper electrical supply according to
specifications. - Connect liquid and vapor lines as per the provided
guidelines. - Install required accessories like BD Units and optional
accessories if needed.
Operation:
- Switch on the unit using the controller options provided.
- Select the desired cooling or heating mode.
- Monitor the airflow and temperature to ensure proper
functioning.
Maintenance:
- Regularly clean the filters and ensure proper airflow.
- Schedule professional maintenance checks annually.
- Check refrigerant levels and connections for any leaks.
FAQ:
Q: What should I do if the unit is not cooling/heating
properly?
A: Check if the filters are clean and airflow is not obstructed.
Also, ensure that the unit is set to the correct mode and
temperature.
Q: Can additional refrigerant be added to the system?
A: Yes, additional refrigerant can be added following the
specified guidelines for main and branch pipes.
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Job Name/Location: Date: PO No.: Architect:
Engr:
Rep:
(Company)
For: File
Resubmit
Approval Other
GC: Mech:
(Project Manager)
Tag No:
KUM XA481A
R32 M ult i F M AX w it h LGRED° Out door Unit Out door Unit (ODU) – KUM XA481A
Performance:
Operating Range:
Cooling Capacity (Min.-Rated-Max., Btu/h) 10,800~48,000~58,000
Cooling (°F DB)
14 to 118
Heating Capacity (Min.-Rated-Max., Btu/h) 12,420~52,500~59,000
Heating (°F WB)
-13 to +64
Max. Heating Capacity at 17°F (Btu/h)
Max. Heating Capacity at 5°F (Btu/h)
Max. Heating Capacity at -4°F (Btu/h)
Max. Heating Capacity at -13°F (Btu/h)
Cooling COP @95°F (Rated)
Heating COP @47°F (Rated)
Cooling Nominal Test Conditions: Indoor: 80°F DB / 67°F WB Outdoor: 95°F DB / 75°F WB
Electrical:
Heating Nominal Test Conditions: Indoor: 70°F DB / 60°F WB Outdoor: 47°F DB / 43°F WB
56,500 52,500 45,200 39,200
3.84 3.62
Power Supply (V/Hz/Ø)1,2
208-230V, 60, 1
MOP (A)
40
Unit Data:
Refrigerant Type
Refrigerant Control
Sound Pressure (Cool / Heat) ±1 dB(A)7 Net / Shipping Weight (lbs.) Power Wiring: ODUBDU, BDUIDU (No x AWG)2 Comm. Wiring: ODUBDU, BDUIDU (No x AWG)2 Heat Exchanger Coating Minimum No. of Indoor Units Maximum No. of Indoor Units
R32 EEV
54 / 56
218.3 / 239.2 3 x 14, 3 x 14 2 x 18, 2 x 18
Gold FinTM 2
8
MCA (A)
33.3
Compressor:
Cooling Rated Amps (A) Heating Rated Amps (A) Compressor (A) Fan Motor (A) Locked Rotor Amps (A)
24.30 24.30
23.0 1.30
22
Type Quantity Oil / Type
Fan:
Scroll 1
PVE
MOP – Maximum Overcurrent Protection
Piping:
MCA – Minimum Circuit Ampacity
Refrigerant Charge (lbs.)
9.262
Liquid Line Connection (in., O.D.)
Ø3/8 x 1
Vapor Line Connection (in., O.D.)
Ø3/4 x 1
Maximum Total Piping3 (ft.)
475.7
Min. / Max. ODU to IDU Piping4 (ft.)
32.8 / 229.6
Piping Length5 (no add’l refrigerant, ft.)
180.4
Additional Refrigerant Charge Main Pipe (oz. / ft.)
0.54
Additional Refrigerant Charge Branch Pipe (oz. / ft.)
0.22
Maximum Elevation between ODU and IDU (ft.)
98.4
Maximum Elevation between IDU and IDU (ft.)
49.2
ODU = Outdoor Unit
IDU = Indoor Unit
Features:
· Scroll (Variable Speed) Compressor · Low ambient cooling down to 14°F
· Auto operation / Auto restart
(-4°F with Wind Baffle Kit)
· Integrated central control connection · Restart delay (three [3] minutes)
· Self diagnosis / Soft start
· Factory installed Drain Pan Heater
· Defrost / Deicing
Required Accessories:6
2-Port BD Unit – PMBD3620ZR
4-Port BD Units –
3-Port BD Unit – PMBD3630ZR
PMBD3640ZR / PMBD3641ZR
Type
Quantity Motor / Drive Max. Airflow Rate (CFM)
Propeller
2 Brushless Digitally Controlled/Direct
2,119 x 2
Notes:
1. Acceptable operating voltage: 187V – 253V. 2. All power supply wiring to the ODU is field supplied, solid or stranded. The power wiring and the com- munication wiring from the ODU to the BDU, and from the BDU to the IDU is field supplied and must be stranded, shielded or unshielded (if shielded, it must be grounded to the chassis of the ODU only). All wiring must comply with applicable local and national codes. a. Power Supply Wiring to Outdoor Unit (No. x AWG): 3 x 8 for 48k, 54k, and 60k. b. Power Wiring and Communication Wiring from ODU to BD Unit (No. x AWG) 3 x 14 / 2 x 18. c. Power Wiring and Communication Wiring from BD Unit to IDU (No. x AWG) 3 x 14 / 2 x 18.
3. Piping lengths are equivalent.
4. 180.4 ft. of Main Piping + 49.2 ft. of Branch Piping. 5. 49.2 ft. of Main Piping + 131.2 of Branch Piping. 6. At least one branch distribution (BD) unit is required for system operation; a maximum of two can be installed per outdoor unit with the use of a Y-branch accessory (ARBLN03321). 7. Sound pressure levels are tested in an anechoic chamber under ISO Standard 3745. 8. See the Engineering Manual Capacity Tables for ODU sensible and latent capacities. 9. See the Engineering Manual Combination Tables for allocation of ODU rated capacity to each connected IDU when all are calling for full capacity. Allocation percentages should be applied to ODU capacity at design conditions. 10. Capacity is rated 0 ft. above sea level, with a 0 ft. level difference between ODU and IDUs, and the following refrigerant pipe lengths: KUMXA361A: 16.4 ft. Main + (16.4 ft. Branch x 5) = 98.4 ft. KUMXA421A: 16.4 ft. Main + (16.4 ft. Branch x 6) = 114.8 ft. KUMXA481A: 16.4 ft. Main + (16.4 ft. Branch x 8) = 147.6 ft. 11. Must follow installation instructions in the applicable LG installation manual. 12. See the Engineering Manual Capacity Tables for ODU capacity at design conditions.
Optional Accessories: Power Distribution Indicator (PDI) Premium – PQNUD1S41
LG Monitoring View (LGMV) for Computers – PRCTIL0
Mobile LGMV for Android®
Low Ambient Wind Baffle Kit –
Smartphones / Tablets or for iOS® Tablets – PLGMVW100
(Android is a registered trademark of Google LLC. iOS is a registered trademark of Cisco Systems, Inc.)
Controller Options: MultiSITE Communication Mgr. AC Smart 5 ACP 5
ZLABGP04A x 2
ACP 5 BACnet® Gateway LonWorks® Gateway
BACnet® is a registered trademark of ASHRAE. Lon- Works is a registered trademark of Echelon Corp.
Proper sizing and installation of equipment is critical to achieve optimal performance. Split system air conditioners and heat pumps (excluding ductless systems) must be matched with appropriate coil components to meet ENERGY STAR® criteria. Ask your contractor for details or visit www.energystar.gov. (ENERGY STAR and the ENERGY STAR mark are registered trade-marks owned by the U.S. Environmental Protection Agency.)
For a complete list of available accessories, contact your LG representative. For continual product development, LG reserves the right to change specifications without notice.
SB_M ult i_F_M AX_LGRED_ODU_R32_KUM XA481A_2025_01_07_202340
© LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG Life’s Good” is a registered trademark of LG Corp. /www.lghvac.com
Page 1 of 3
Job Name/Location:
KUM XA481A
R32 M ult i F M AX w it h LGRED° Out door Unit Out door Unit (ODU) – KUM XA481A
Tag No.: Date: PO No.:
For continual product development, LG reserves the right to change specifications without notice.
SB_M ult i_F_M AX_LGRED_ODU_R32_KUM XA481A_2025_01_07_202340
© LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG Life’s Good” is a registered trademark of LG Corp. /www.lghvac.com
Page 2 of 3
Job Name/Location:
KUM XA481A
R32 M ult i F M AX w it h LGRED° Out door Unit Out door Unit (ODU) – KUM XA481A
Tag No.: Date: PO No.:
Multi F MAX with LGRED Outdoor Unit Refrigerant Piping System Limitations.
Pipe Length (ELF = Equivalent Length of pipe in Feet)
Elevation Differential (All Elevation Limitations are Measured in Actual Feet)
Total piping length (A + B)
Main pipe (Outdoor Unit to Branch Distribution Minimum for Each (A) Piping Segment
Units: A)
Maximum (A)
Total branch piping length (B)
Branch pipe (Branch Distribution Units to Indoor Minimum
Units: B)
Maximum
If outdoor unit is above or below indoor unit (h1)
Between the farthest two indoor units (h2)
Between branch distribution unit and farthest connected indoor unit(s) (h3)
Between branch distribution units (h4)
475.7 feet 16.4 feet
180.4 feet 295.3 feet
16.4 feet 49.2 feet 98.4 feet 49.2 feet 32.8 feet 49.2 feet
Multi F MAX with LGRED Piping Sizes.
Piping Main Pipe A (inch) Branch Pipe B
Liquid Ø3/8 Vapor Ø3/4
Depends on the size of the indoor unit piping.
For continual product development, LG reserves the right to change specifications without notice.
SB_M ult i_F_M AX_LGRED_ODU_R32_KUM XA481A_2025_01_07_202340
© LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG Life’s Good” is a registered trademark of LG Corp. /www.lghvac.com
Page 3 of 3
Documents / Resources
 |
LG KUMXA481A Multi F MAX with Outdoor Unit [pdf] Instruction Manual KUMXA481A Multi F MAX with Outdoor Unit, KUMXA481A, Multi F MAX with Outdoor Unit, MAX with Outdoor Unit, Outdoor Unit |