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)
m
3)
100
120
150
Operating range - indoor unit
°C
+15 to +35
Air flow volume per stage
m
3
/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)
m
3
/h
0.53
0.60
0.78
Nominal flow rate, medium - heating
2)
m
3
/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
9
