Centrum

Design

Application

Fully automatic water supply and pressure boosting in inlet mode from a tank, for domestic, commercial, industrial and municipal applications (e.g. residential, office, administration buildings, hotels, hospitals, trades, industry, water supply companies).

Approved fluids are generally waters which do not attack the materials used, neither chemically nor mechanically, and do not contain any abrasive or long-fiber constituents like:

• Drinking water (check drinking water approvals in materials section)
• Cooling water
• Process water

Equipment/function

• 1-3 pumps per system
• Infinitely variable control mode through the use of pumps with water cooled inverters
• Components that come in contact with fluid are corrosion-resistant
• Galvanized base frame with height-adjustable vibration damper for insulation against structure-borne noise
• Shut-off valve at each pump, on the suction and pressure sides
• Non-return valve, pressure side
• Diaphragm pressure vessel 8 l, PN10, pressure side
• Pressure gauge, discharge side
• Low-water cut-out switchgear optional

Technical data

• 1~230 V ± 10 %, 50 Hz; mains connection (other versions on request)
• Max. fluid temperature 50 °C
• Ambient temperature max. 40 °C
• Operating pressure 10 bar
• Inlet pressure 10 bar
• Nominal connection diameters on discharge side R 1 1/4” - R 2 1/2"
• Nominal connection diameters on inlet side R 1 1/4” - R 2 1/2"
• Speed range 1500 – 3500rpm
• IP rating IP54
• Fuse protection on mains side A, AC 3 according to motor power and EVU regulations
• Approved fluids (other fluids on request):Note on fluids: Approved fluids are generally water mixtures which do not chemically or mechanically attack the materials used and do not contain either abrasive or fibrous matter
  • Cooling water
  • Potable and process water

Materials

Helix V: 4-10 m3/h

• Pump housing in 1.4301 [Aisi 304]
• Hydraulics in 1.4307 [Aisi 304L]
• Gasket EPDM
• without cartridge

Other pumps executions could be ordered on request:

• with our without cartridges
• PN 25
• FKM (Viton) gasket
• Stainless steel pump housing and Hydraulics in 1.4404 [AISI 316L]

Construction

• Base frame: Galvanised and provided with height-adjustable vibration absorbers for comprehensive insulation against structure-borne noise; other versions on request
• Pipework: Complete pipework made of stainless steel, suitable for the connection of all piping materials used in building services; the pipework is dimensioned according to the overall hydraulic performance of the pressure boosting system
• Pumps: 2 to 3 pumps from the Helix V4... V6... V10... series switched in parallel are used; all pump components in contact with fluid are made of stainless steel
• Valves: Each pump is fitted on the suction and pressure side with a shut-off valve with WRAS approval mark or annular shut-off valves and a pressure-side WRAS approved non-return valve
• Diaphragm pressure vessel: 8 L/PN 16 located on the discharge side with a butyl rubber diaphragm, completely safe in accordance with food safety laws; for testing and inspection purposes, with ball valve, with drain and throughflow fitting according to DIN 4807
• Pressure sensor: Fitted internally on each water cooled inverter
• Pressure display: Discharge-side pressure gauge (ø 63 mm); additional digital display of discharge pressure on the water cooled inver HMI
• Controller: water cooled inverters mounted in line on the discharge manifold to enable continuous auto control for all pumps of these series;

Scope of delivery

• Factory-mounted, connection-ready pressure boosting system checked for functionality and impermeability
• Packaging
• Installation and operating instructions

Options