Four-way cassette

Four-way Cassette C Series, 2-pipe | DK4C-E/FP-KM4C+200/300/400
Cooling capacity: W 7/12 °C ;A 27 °C DB /19.5°C WB ;1.08~3.60kW
Water flow rate: 0.31~0.61 m³/h
Heating capacity: W(inlet) 60°C; A 21°C DB; 1.62~5.40kW
Motor: DC/AC;
Hydraulic connections: Rc 3/4 ”
Indoor unit dimension(L×W×H) : 582 mm × 582 mm × 265 mm | Panel dimension: 680 mm × 680 mm × 30 mm
Air flow rate (H/M/L) : 170~680 m³/h (100~400 CFM)
Power Supply : 220/1/50(60) V/Ph/Hz
Heating capacity: W(inlet) 45°C; A 21°C DB; 1.08~3.60kW
Water pressure drop: 30 kPa
Power input: 22~60 W
Rated current: 0.10~0.27 A
Sound pressure level: 37~41 dB(A)
Net / Gross weight : 2.3~20.0 / 3.3~22.5 kg
Packing size(L×W×H) : 675 mm × 675 mm × 270 mm; 720 mm × 720 mm × 290 mm


Four-way Cassette C Series, 2-pipe | DK4C-E/FP-KM4C+500/600/700/800
Cooling capacity: W 7/12 °C ;A 27 °C DB /19.5°C WB ;2.70~7.20kW
Water flow rate: 0.77~1.22 m³/h
Heating capacity: W(inlet) 60°C; A 21°C DB; 4.05~10.80kW
Motor: DC/AC;
Hydraulic connections: Rc 3/4 ”
Indoor unit dimension(L×W×H) : 712 mm × 712 mm × 290 mm | Panel dimension: 830 mm × 830 mm × 30 mm
Air flow rate (H/M/L) : 425~1,360 m³/h (250~800 CFM)
Power Supply : 220/1/50(60) V/Ph/Hz
Heating capacity: W(inlet) 45°C; A 21°C DB; 2.70~7.20kW
Water pressure drop: 30~40 kPa
Power input: 44~130 W
Rated current: 0.20~0.59 A
Sound pressure level: 43~46 dB(A)
Net / Gross weight : 3.5~27.6 / 5.0~31.0 kg
Packing size(L×W×H) : 800 mm × 800 mm × 310 mm; 860 mm × 860 mm × 340 mm


Four-way Cassette C Series, 2-pipe | DK4C-E/FP-KM4C+1000/1200/1400
Cooling capacity: W 7/12 °C ;A 27 °C DB /19.5°C WB ;5.40~12.60kW
Water flow rate: 1.56~2.16 m³/h
Heating capacity: W(inlet) 60°C; A 21°C DB; 8.10~18.90kW
Motor: DC/AC;
Hydraulic connections: Rc 3/4 ”
Indoor unit dimension(L×W×H) : 827 mm × 827 mm × 290 mm | Panel dimension: 980 mm × 980 mm × 30 mm
Air flow rate (H/M/L) : 850~2,380 m³/h (500~1,400 CFM)
Power Supply : 220/1/50(60) V/Ph/Hz
Heating capacity: W(inlet) 45°C; A 21°C DB; 5.40~12.60kW
Water pressure drop: 40~50 kPa
Power input: 88~221 W
Rated current: 0.40~1.00 A
Sound pressure level: 48~52 dB(A)
Net / Gross weight : 5.2~34.5 / 7.0~39.0 kg
Packing size(L×W×H) : 925 mm × 925 mm × 310 mm; 1005 mm × 1005 mm × 340 mm


Four-way Cassette C Series, 2-pipe | FP-KM4C+1600/1800/2000
Cooling capacity: W 7/12 °C ;A 27 °C DB /19.5°C WB ;8.64~18.00kW
Water flow rate: 2.64~3.54 m³/h
Heating capacity: W(inlet) 60°C; A 21°C DB; 12.96~27.00kW
Motor: AC;
Hydraulic connections: Rc 3/4 ”
Indoor unit dimension(L×W×H) : 960 mm × 960 mm × 290 mm | Panel dimension: 1140 mm × 1140 mm × 30 mm
Air flow rate (H/M/L) : 1,360~3,400 m³/h (800~2,000 CFM)
Power Supply : 220/1/50 V/Ph/Hz
Heating capacity: W(inlet) 45°C; A 21°C DB; 8.64~18.00kW
Water pressure drop: 50 kPa
Power input: 257~333 W
Rated current: 1.17~1.51 A
Sound pressure level: 53~55 dB(A)
Net / Gross weight : 45.4 / 51.0 kg
Packing size(L×W×H) : 1155 mm × 1155 mm × 340 mm


Four-way Cassette C Series, 4-pipe | DK4C-E/FP-KM4CP+200/300/400
Cooling capacity: W 7/12 °C ;A 27 °C DB /19.5°C WB ;1.08~3.60kW
Water flow rate: 0.31~0.61 m³/h
Heating capacity: W(inlet) 60°C; A 21°C DB; 0.73~2.43kW
Motor: DC/AC;
Hydraulic connections: Rc 3/4 ”
Indoor unit dimension(L×W×H) : 582 mm × 582 mm × 265 mm | Panel dimension: 680 mm × 680 mm × 30 mm
Air flow rate (H/M/L) : 170~680 m³/h (100~400 CFM)
Power Supply : 220/1/50(60) V/Ph/Hz
Heating capacity: W(inlet) 45°C; A 21°C DB; 0.49~1.62kW
Water pressure drop: 30 kPa
Power input: 22~60 W
Rated current: 0.10~0.27 A
Sound pressure level: 37~41 dB(A)
Net / Gross weight : 2.3~20.0 / 3.3~22.5 kg
Packing size(L×W×H) : 675 mm × 675 mm × 270 mm; 720 mm × 720 mm × 290 mm


Four-way Cassette C Series, 4-pipe | DK4C-E/FP-KM4CP+500/600/700/800
Cooling capacity: W 7/12 °C ;A 27 °C DB /19.5°C WB ;2.70~7.20kW
Water flow rate: 0.77~1.22 m³/h
Heating capacity: W(inlet) 60°C; A 21°C DB; 1.82~4.86kW
Motor: DC/AC;
Hydraulic connections: Rc 3/4 ”
Indoor unit dimension(L×W×H) : 712 mm × 712 mm × 290 mm | Panel dimension: 830 mm × 830 mm × 30 mm
Air flow rate (H/M/L) : 425~1,360 m³/h (250~800 CFM)
Power Supply : 220/1/50(60) V/Ph/Hz
Heating capacity: W(inlet) 45°C; A 21°C DB; 1.21~3.24kW
Water pressure drop: 30~40 kPa
Power input: 44~130 W
Rated current: 0.20~0.59 A
Sound pressure level: 43~46 dB(A)
Net / Gross weight : 3.5~27.6 / 5.0~31.0 kg
Packing size(L×W×H) : 800 mm × 800 mm × 310 mm; 860 mm × 860 mm × 340 mm


Four-way Cassette C Series, 4-pipe | DK4C-E/FP-KM4CP+1000/1200/1400
Cooling capacity: W 7/12 °C ;A 27 °C DB /19.5°C WB ;5.40~12.60kW
Water flow rate: 1.56~2.16 m³/h
Heating capacity: W(inlet) 60°C; A 21°C DB; 3.64~8.50kW
Motor: DC/AC;
Hydraulic connections: Rc 3/4 ”
Indoor unit dimension(L×W×H) : 827 mm × 827 mm × 290 mm | Panel dimension: 980 mm × 980 mm × 30 mm
Air flow rate (H/M/L) : 850~2,380 m³/h (500~1,400 CFM)
Power Supply : 220/1/50(60) V/Ph/Hz
Heating capacity: W(inlet) 45°C; A 21°C DB; 2.43~5.67kW
Water pressure drop: 40~50 kPa
Power input: 88~221 W
Rated current: 0.40~1.00 A
Sound pressure level: 48~52 dB(A)
Net / Gross weight : 5.2~34.5 / 7.0~39.0 kg
Packing size(L×W×H) : 925 mm × 925 mm × 310 mm; 1005 mm × 1005 mm × 340 mm


Four-way Cassette C Series, 4-pipe | FP-KM4CP+1600/1800/2000
Cooling capacity: W 7/12 °C ;A 27 °C DB /19.5°C WB ;8.64~18.00kW
Water flow rate: 2.64~3.54 m³/h
Heating capacity: W(inlet) 60°C; A 21°C DB; 5.83~12.15kW
Motor: AC;
Hydraulic connections: Rc 3/4 ”
Indoor unit dimension(L×W×H) : 960 mm × 960 mm × 290 mm | Panel dimension: 1140 mm × 1140 mm × 30 mm
Air flow rate (H/M/L) : 1,360~3,400 m³/h (800~2,000 CFM)
Power Supply : 220/1/50 V/Ph/Hz
Heating capacity: W(inlet) 45°C; A 21°C DB; 3.89~8.10kW
Water pressure drop: 50 kPa
Power input: 257~333 W
Rated current: 1.17~1.51 A
Sound pressure level: 53~55 dB(A)
Net / Gross weight : 45.4 / 51.0 kg
Packing size(L×W×H) : 1155 mm × 1155 mm × 340 mm

Product downloads

  • PDF DERK FCU leaflet(V26) Catalog · Cassette, duct, ceiling & floor, console and convector units. · 2.2 MB

Frequently Asked Questions

What cassette models does DERK offer?

We manufacture one-way, two-way, four-way, round and eight-way cassette units for chilled-water systems, covering typical cooling capacities from 2.2 kW to 14 kW with fixed-speed and DC inverter options.

How thin is the ceiling panel?

Panel profiles are designed to fit shallow ceiling voids, with front panels starting from roughly 30 mm on one-way models to about 50 mm on four-way models.

Are cassettes compatible with DERK chillers?

Yes. Cassettes are built for hydronic systems and connect directly to DERK air-cooled chillers, mini chillers and heat pump water heaters for a complete chilled-water solution.

What controls are available?

Units include wired controllers with optional WiFi/App control, BMS integration via Modbus, and centralized control through the DERK control system.

Can the front panel be customized?

Yes. Front panels can be supplied in custom colors and finished with your brand logo, which is popular for hotel chains and multi-unit projects.

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