Specifications

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RAC Multi-System Outdoor Units RAC Multi-System Outdoor Units
KS/KE Series KS/KE Series
RAC Multi System
RAC Multi System
Micro-
processor
Control
Wireless
Control
Wired
Control
Self
Diagnose
Dry
5 Fan
speeds
Air Sweep Louver
Auto-
change
over
Night
setback
Hot Start 24hr timer
Weekly
Timer
System
Controller
Filter sign
Auto
Restart
Fresh
Air intake
Branch
Extension
Drain
Pump
Low
Ambient
Operation
Elect.Valve
ODP=0
Refrigerant
Quiet
Anti-
microbial
Filt.
Blue Fin
ECONAVI
Room Freeze
Protection
1hr
off timer
Model No.
CU-4KS24NBU CU-4KE24NBU CU-4KS31NBU CU-4KE31NBU
Performance Cooling Cooling Heating Cooling Cooling Heating
Capacity Btu/h 24,200 22,400 27,200 29,000 / 28,600
29,000 / 28,600 30,600
Air Circulation High CFM 1,707 1,707 1,942 1,942
Number of Connectable Indoor Units 2 ~ 4 2 ~ 4 2 ~ 4 2 ~ 4
SEER Cooling 18.0 18.0 17.6 17.2
EER Cooling 10.0 11.5 11.2 11.2
HSPF Heating --- 8.5 --- 9.3
Electrical Rating
Power Supply V, Phase, Hz 230V / 208V, 1Ph, 60Hz 230V / 208V, 1Ph, 60Hz 230V / 208V, 1Ph, 60Hz 230V / 208V, 1Ph, 60Hz
Running Ampere A 10.7 / 11.9 8.7 / 9.6 10.0 / 11.0 11.4 / 12.6 11.4 / 12.6 10.1 / 11.2
Power Input W 2,420 1,950 2,250 2,600 / 2,560 2,600 / 2,560 2,300
Maximum Fuse Size Amps 20A 20A 20A 20A
Features
Controls Microprocessor Microprocessor Microprocessor Microprocessor
Fan Speeds Auto (Hi, Me, Lo) Auto (Hi, Me, Lo) Auto (Hi, Me, Lo) Auto (Hi, Me, Lo)
Compressor DC Inverter DC Inverter DC Inverter DC Inverter
Refrigerant / Amount Charged at Shipment 1b. R-410A / 6.17 R-410A / 6.17 R-410A / 8.38 R-410A / 8.38
Refrigerant Control Electric Expansion Valve Electric Expansion Valve Electric Expansion Valve Electric Expansion Valve
Operation Sound Hi dB-A 50 50 52 53 53 55
Refrigerant Tubing Connections Type Flare Flare Flare Flare
Max. Allowable Tubing Length Ft
82 (per Unit) 200 (per System with addi-
tional Refrigerant)
82 (per Unit) 200 (per System with addi-
tional Refrigerant)
100 (per Unit) 230 (per System with addi-
tional Refrigerant)
100 (per Unit) 230 (per System with addi-
tional Refrigerant)
Refrigerant Tube Diameter Discharge inch 1/4” x 4 1/4” x 4 1/4” x 4 1/4” x 4
Suction inch 3/8” x 3 + 1/2” x 1 3/8” x 3 + 1/2” x 1 3/8” x 2 + 1/2” x 2 3/8” x 2 + 1/2” x 2
Dimensions & Weight
Unit Dimensions H x W x D inch 29-1/8” x 35-7/16” x 12-19/32” 29-1/8” x 35-7/16” x 12-19/32” 35-1/32” x 35-7/16” x 12-19/32” 35-1/32” x 35-7/16” x 12-19/32”
Net Weight Lbs. 138.9 143.3 174.2 181.0
Connectable from 2 to 3 Indoor Units Connectable from 2 to 4 Indoor Units
CU-4KS24NBU
CU-4KE24NBU
CU-3KS19NBU
CU-3KE19NBU
CU-4KS31NBU
CU-4KE31NBU
Model No.
CU-3KS19NBU CU-3KE19NBU
Performance Cooling Cooling Heating
Capacity Btu/h 17,000 17,000 23,200
Air Circulation High CFM 1,707 1,707
Number of Connectable Indoor Units 2 ~ 3 2 ~ 3
SEER Cooling 18.0 18.0
EER Cooling 12.0 12.0
HSPF Heating --- 8.8
Electrical Rating
Power Supply V, Phase, Hz 230V / 208V, 1Ph, 60Hz 230V / 208V, 1Ph, 60Hz
Running Ampere A 6.3 / 7.0 6.3 / 7.0 9.1 / 10.1
Power Input W 1,420 1,420 2,050
Maximum Fuse Size Amps 15A 15A
Features
Controls Microprocessor Microprocessor
Fan Speeds Auto (Hi, Me, Lo) Auto (Hi, Me, Lo)
Compressor DC Inverter DC Inverter
Refrigerant / Amount Charged at Shipment 1b. R-410A / 6.17 R-410A / 6.17
Refrigerant Control Electric Expansion Valve Electric Expansion Valve
Operation Sound Hi dB-A 50 50 52
Refrigerant Tubing Connections Type Flare Flare
Max. Allowable Tubing Length Ft 82 (per Unit) 150 (per System) with additional refrigerant 82 (per Unit) 150 (per System) with additional refrigerant
Refrigerant Tube Diameter Discharge inch 1/4” x 3 1/4” x 3
Suction inch 3/8” x 3 3/8” x 3
Dimensions & Weight
Unit Dimensions H x W x D inch 29-1/8” x 35-7/16” x 12-19/32” 29-1/8” x 35-7/16” x 12-19/32”
Net Weight Lbs. 138.9 143.0
Up to Rooms
3
Up to Rooms
4
It is not possible to connect an outdoor unit to only a single indoor unit. If operated with only ONE indoor unit installed, the returning refrigerant to the compressor may cause a malfunction.
IMPORTANT
It is not possible to connect an outdoor unit to only a single indoor unit. If operated with only ONE indoor unit installed, the returning refrigerant to the compressor may cause a malfunction.
IMPORTANT
Outdoor UnitOutdoor Unit
* Test Conditions based on AHRI 210/240
* Test Conditions based on AHRI 210/240