TECHNICAL INFORMATION
6 720 641 467 (2010/01)
50
15.3 SOUND PRESSURE LEVEL
15.4 TEMPERATURE SENSOR RESISTANCE
VALUES
Internal unit HWDU
Output of the internal unit kW 4.5
Circulation pump rating kW 0.2
Power supply
230V 1N~
50Hz
Maximum power consump-
tion
kW
4.7
Fuse rating
1)
1) aM type fuse, D characteristic MCB. Both units require a
means of electrical isolation.
AT 25
Maximum operating pressure
bar
(MPa)
2.5
(0.25)
Available capacity, DHW cyl-
inder
l
151
CH buffer volume l 55
Expansion vessel l 12
Expansion vessel,
pre-charge pressure
bar
(MPa)
1
(0.1)
Overheat protection °C 90
Min. flow rate, heating sys-
tem
l/s
0
Heating circuit pump, sec-
ondary G1"
Wilo Star RS 25/6-3
Heating circuit pump, primary
G2"
Wilo Star RS 25/6-3
Dimensions (W×D×H)
2)
2) Dimensions excl. feet, supplied min 20 mm - max 30 mm
depending on adjustment.
mm
600×615×
1660
Dry weight kg 122
Wet weight kg 347
Tab. 10 Internal unit 290 A/W
LW
1)
sound pressure level (dB(A))
1) Measured in accordance with EN ISO 3743-1
6 64.9
7 64.9
9.5 64.9
Tab. 11
Temperature ( °C) k Ω
– 40 154.30
– 35 111.70
– 30 81.70
– 25 60.40
– 20 45.10
– 15 33.95
– 10 25.80
– 5 19.77
015.28
511.90
10 9.33
15 7.37
20 5.87
25 4.70
30 3.79
35 3.070
40 2.51
45 2.055
50 1.696
55 1.405
60 1.17
65 0.98
70 0.824
75 0.696
80 0.59
85 0.503
90 0.43
Tab. 12 Temperature sensor test values
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