Does a distributed pumping solution require hydraulic balancing?
No. Because we use small circulators as coil pumps to supply chilled water to each terminal unit (ie. Air handling unit), your entire building will be perfectly balanced at any load.
This also simplifies the design phase, as it is no longer necessary to determine the critical pressure point / index loop when doing the HVAC design. With distributed pumping, your whole system becomes decoupled and each pump is sized to deliver just the right flow.
Can the SP pumps also be operated in a horizontal position?
SP submersible pumps with a Grundfos or other submersible motor can be operated in any position from horizontal to vertical. The motor is arranged below the pump. A cooling jacket is generally required for these installation positions.
How can a blockage in a heating/wet-running pump be overcome?
De-energise the pump. Remove the screw in the centre of the nameplate. The shaft located beneath this has a groove. Place a screwdriver in the groove and move the shaft in the direction of rotation until you have removed the blockage.
Modern self-regulating heating pumps no longer have a screw in the centre of the nameplate. However, modern pumps have an anti-block feature. Should a blockage nevertheless occur, the pump head must be removed.
Let our experts guide you through the installation, repair and maintenance of your Grundfos pump. Simply go to the product page for your pump, tool or accessory to view the service videos we have collected to help you optimise performance.
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