SITE STORAGE
It is strongly recommended once the unit has been delivered to site, that it be placed
immediately into a dust, moisture and frost-free area that has been secured to prevent
unauthorised interference. If this is not possible the unit should be stored in an area
that is as near to the ideal storage conditions described above.
APPLICATIONS
The Grundfos range of IMpress units have been designed to be compact, reliable
and simple to use and to provide many years of efficient and effective service.
The main application of the unit(s) is:
Pressurisation of sealed heating systems
Pressurisation of sealed chilled water systems
MAXIMUM OPERATING CONDITIONS
The Grundfos range of IMpress units have been designed to
Liquid temperature range : 3 to +90°C
Ambient temperature : up to +40°C
Relative Humidity : up to 95 %
Maximum operating pressure : 6 Bar
Recommended maximum start-stops per hour : 20 - 30
NOISE LEVEL
The noise level of the pressurisation units referenced in these installation
instructions is lower than the limiting values stated in the EEC machinery
directive.
If pressurisation units are installed close to living accommodation, it is
advisable to fit anti-vibration mountings on the unit and a flexible pipe
coupling on the outlet pipework from the unit to prevent vibration being
transmitted through the system pipework. This applies especially to units installed in
concrete buildings.
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