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2.2 Unit data KWK 305-455 -ZW
Series KWK 305
ZW
KWK 355
ZW
KWK 455
ZW
Operating mode Chilled water units for wall and ceiling
mounting, 2-conductor version
Nominal cooling output 1) kW 3.08 3.51 4.54
Nominal heat capacity 2) kW 3.47 4.03 4.95
Application area (room volume), approx. 3) m3) 100 120 150
Operating range - indoor unit °C +15 to +35
Air flow volume per stage m3/h 280/390/490 310/420/530 400/570/730
Sound pressure level per stage 3) dB (A) 21/27/33 26/34/42
Sound power level per stage dB (A) 29/35/41 34/42/50
Power supply V/Ph/Hz 230/1~ /50
Enclosure class IP X0
Electrical rated power consumption 1) W 59 71 97
Electrical rated current consumption 1) A 0.26 0.31 0.42
Operating medium max. 35% ethylene glycol, max. 35% pro-
pylene glycol
Operating limits, medium - cooling °C +4 to +18
Operating limits, medium - heating °C +35 to +80
Operating pressure, medium, max. kPa 1500
Nominal flow rate, medium - cooling 1) m3/h 0.53 0.60 0.78
Nominal flow rate, medium - heating 2) m3/h 0.60 0.69 0.87
Rated pressure drop, internal - cooling 1) kPa 18.6 19.9 20.2
Rated pressure drop, internal - heating 2) kPa 20.9 22.9 22.5
Medium connection, inlet Inches 1/2
Medium connection, outlet Inches 1/2
Medium volume l 1.4 1.7
Condensate drainage connection mm 20
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