Wilo-Comfort-Vario COR MVIE.../VR

Series description

Special features/product advantages

  • Sturdy system due to MVIE series high-pressure multistage centrifugal pumps with air-cooled integrated frequency converters
  • Superproportionally large control range
  • Integrated dry-running detection with automatic cut-out in event of low water via performance characteristics of the motor control electronics

Design type

Pressure boosting system with 2 to 4 non-self-priming stainless steel high-pressure multistage centrifugal pumps switched in parallel with speed-controlled motors and Vario controller VR

Application

  • Fully automatic water distribution and pressure boosting in inlet mode or from a tank, for domestic, commercial, industrial and municipal applications (e.g. residential, office, administration buildings, hotels, hospitals, trades, industry or water supply companies).
  • Pumping of water, cooling water, firefighting water (apart from fire-extinguishing systems in accordance with DIN 14462 and with the approval of the local fire protection authorities) or other types of industrial water that do not attack the materials either chemically or mechanically and do not contain abrasive or long-fibre constituents

Equipment/function

  • 2-4 pumps of the MVIE series per system with infinitely variable control mode via integrated frequency converter
  • Components that come in contact with fluid are corrosion-resistant
  • Galvanised base frame with height-adjustable vibration absorber 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, PN 16, on the pressure side
  • Pressure sensor, on the discharge side
  • Optional pressure gauge, suction side
  • Pressure gauge, discharge side
  • Optional low-water cut-out switchgear

Scope of delivery

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

Type key

Example:

Wilo-COR-3 MVIE 7002/VR

COR

Compact pressure-boosting system with integrated speed control

3

Number of pumps

MVIE

Pump series

70

Rated volume flow [m3/h] of single pump

02

Number of single pump stages

VR

Control unit; VR = Vario controller

Technical data

  • 3~400 V ± 10 %, 50 Hz; 3~380 V ±10 %, 60 Hz mains connection, depending on type also 1~230 V, 50/60 Hz (other versions on request)
  • Max. fluid temperature 50 °C (70 °C optional)
  • Max. ambient temperature of 40 °C
  • Operating pressure 16 bar
  • Inlet pressure 10 bar
  • Discharge-side nominal connection diameters DN 200 – DN 250
  • Inlet-side nominal connection diameter DN 200 – DN 250
  • Speed range 1200 – 3770 rpm
  • Protection class IP54 (VR control device)
  • Fuse protection A on mains side, AC 3 according to motor power and EVU regulations
  • Approved fluids (other fluids on request): Note regarding fluids: Approved fluids are generally waters which do not attack the materials used, neither chemically nor mechanically, and do not contain any abrasive or long-fibre constituents.
    • Cooling water
    • Process water
    • Firefighting water

Materials

  • Impellers of stainless steel 1.4404
  • Stage chambers made of 1.4301 stainless steel
  • Pump housing EN-GJL-250
  • Shaft stainless steel 1.4057
  • Gasket of EPDM (EP 851)/FKM (Viton)
  • Housing cover made of 1.4301 stainless steel
  • Housing bottom made of 1.4301 stainless steel
  • Mechanical seal of B-carbon/tungsten carbide, SiC/carbon
  • Pressure shroud made of 1.4301 stainless steel
  • Bearing of tungsten carbide
  • Pipework made of 1.4571 stainless steel

Description/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 4 pumps from the MVIE 70.. or 95.. series switched in parallel are used; adapted air-cooled frequency converters on the pump motor enable continuous auto control for all pumps of these series; 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 DVGW approval mark or annular shut-off valves and a pressure-side DVGW-approved non-return valve
  • Diaphragm pressure vessel: 8 l/PN16 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: 4 to 20 mA, located on the discharge side for activating the central Comfort-Vario controller
  • Pressure indication: On pressure side via pressure gauge and additionally on the alphanumeric LCD screen of the VR Vario control device. Optional pressure display for inlet pressure side via pressure gauge.
  • Controller: the system is standard-equipped with a VR Vario controller

Downloads

REACH Regulation

Edition 2018-10
Page format 209.9 x 296.7 mm
Number of pages 4

PDF (581 kB)

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General overview 2018 International version

Article Number 2200591
Edition 2018
Version number 1
Page format 209.9 x 297.0 mm
Number of pages 72

PDF (11 MB)

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