10. Installation
Pumped liquids
The pump must not be used for circulation of flammable
liquids such as diesel oil and petrol.
Risk of malfunction or damage when inhibitors or
additives are added to the pumped liquids.
The pump is suitable for the following liquids:
• Clean, thin, non-aggressive and non-explosive
liquids, not containing solid particles or fibres.
• In heating systems, the water must meet the
requirements of accepted standards on water quality
in heating systems, for example the German standard
VDI 2035.
• The pH must be between 8.2 and 9.5. The minimum
value depends on the water hardness and must not
be below 7.4 at 4 °dH (0.712 mmol/l).
• The electrical conductivity at 25 °C must be ≥ 10
microS/cm.
• Mixtures of water with antifreeze media such as
glycol with a kinematic viscosity lower than 10 mm
2
/s
(10 cSt). When selecting a pump, the viscosity of the
pumped liquid must be taken into consideration. If the
pump is used for a liquid with a higher viscosity, the
hydraulic performance of the pump is reduced.
• Solar media as used in typical solar thermal systems
containing up to 50 Vol % of antifreeze media.
• For drinking water systems, approved housings must
be used, such as CIL3 PPS or stainless steel N.
These pumps and their components in contact with
water are approved by WRAS (GB), ACS (FR), KTW
(DE) and DIN DVGW W270 (DE).
• In domestic hot-water systems, the pump must be
used only for water with a degree of temporary
hardness of less than 3 mmol/l CaCO3 (16.8 ° dH).
To avoid lime problems in hard waters, the medium
temperature must not exceed 65 °C.
• The water quality of test beds for the final production
tests of complete heating appliances including pump
must be observed to avoid calcification or biofilm
formation during a longer storage period.
Ambient temperature
The ambient temperature must not exceed 70 °C
(measured in a distance of not more than 5 cm in front of
the front foil at its lower edge). The ambient temperature
of UPM3L must not exceed 55 °C.
Relative humidity
IP44: The relative humidity must not exceed 95 % in a
non-condensing environment.
The dew point of the air at ambient temperature should
always be lower than the liquid temperature, otherwise
condensation may form in the stator housing.
K-Version/IPX4D: Condensation is acceptable.
Storage temperature
-40 to +75 °C.
Liquid temperature
Note: For further lifetime evaluation, the temperature
profile must be defined.
UPM3 with cast iron or stainless-steel housing:
• max. 110 °C at 70 °C ambient temperature
• max. 130 °C at 60 °C ambient temperature
The above mentioned temperature ranges do not take
temperature limitations of the drinking water approvals
into account.
UPM3 with composite housing (PA 6.6): max. 95 °C
UPM3L: max. 95 °C at 55 °C ambient temperature
UPM3, IP44 above dew point of ambient air: min. 2 °C
UPM3, IP4XD as K version with drain hole: min. -10 °C
Related information
Overview of operating panel control modes
Expected lifetime of composite PA6.6 housings
Inlet pressure
To avoid cavitation noise and damage to the pump
bearings, the following minimum pressures are required at
the pump inlet port.
Liquid temperature
75 °C 95 °C 110 °C
Pressure
0.005 MPa 0.05 MPa 0.108 MPa
0.05 bar 0.5 bar 1.08 bar
Storing and transporting the product
• Observe the permissible ambient conditions.
• Protect the storage location from rain, humidity,
condensation, direct sunlight and dust.
• Maximum storage time (without power supply): 2
years from delivery.
• Use appropriate lifting and transporting devices.
• Observe the maximum stacking height of pallets.
Non-observance of the safety instructions may have
dangerous consequences for persons, the environment
and the product.
UPM3
10
46
Installation
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