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ENGLISH
HK-HKM-25-32-IM-DE-W-UK-03-2021-Rev.3 | Part no. 10025988
3 Technical data
Hydraulic performance data
Max. operating pressure
6 bar
Ambient temperature
-2 °C to +40 °C (
observe pump specification!
)
Operating temperature
+2 °C to +90 °C (
observe pump specification!
)
Opening pressure of gravity brake
10 mbar
Nominal size
HK25, HK25-KH, HKM25: DN25
HK32, HKM32: DN32
Kvs bypass (only for HKM)
HKM25: 6.3
HKM32: 18.0
Temperature display area
0 - 120 °C
Media
Water / water-glycol mixtures according to VDI 2035/ÖNORM H 5195
Electrical connection
Power supply
See separate pump documentation!
Dimensions
Width x height x depth with EPP shell
300 x 370 x 240 mm
Axis center distance
125 mm
Sealing surfaces distance
342.5 mm
Connections to pipe network
Heating circuit (top)
HK25, HK25-KH, HKM25:
11/2" male connection, flat sealaing.
Fitting: 11/2" union nut x 1" female connection
HK32, HKM32:
2"AG
male connection, flat sealaing
.
Fitting: 2" union nut × 11/4" female connection
Boiler circuit (bottom)
11/2" male connection, flat sealing
Tightening torques for screwed connections
3/4"
35 Nm
1"
55 Nm
11/4"
90 Nm
11/2"
130 Nm
2"
190 Nm
Materials
Fittings
brass CW617N
Pipes
galvanized steel
Plastics
impact resistant and temperature resistant
Flat seals
AFM 34/2
Bypass pipe
brass CW617N
Gravity brake
POM. NBR. stainless steel
O-rings
EPDM
Insulation
EPP
Wall bracket
Galvanized steel sheet
Circulation pump and motor
The technical data on the circulating pumps and motors can be found in the respective pump documentation.
