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

Series description

Special features/product advantages

  • Sturdy system due to MVIE series stainless steel 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 supply and pressure boosting in residential, commercial and public buildings, hotels, hospitals, department stores and for industrial systems.
  • Pumping of drinking water and process water, cooling water, fire water (apart from fire-extinguishing systems in accordance with DIN 14462 and with the approval of the local fire safety 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
  • 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, PN16, 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, connection-ready pressure boosting system checked for functionality and impermeability
  • Packaging
  • Installation and operating instructions

Type key

Example:

Wilo-COR-3 MVIE 406/VR

COR

Compact pressure boosting system with integrated speed control

3

Number of pumps

MVIE

Pump series

4

Rated volume flow [m3/h] of the single pump

06

Number of single-pump stages

VR

Control unit; VR = Vario controller

Technical data

  • Mains connection 3~400 V ± 10 %, 50 Hz; 3~380 V ±10 %, 60 Hz, 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 40 °C
  • Operating pressure 16 bar
  • Inlet pressure 10 bar
  • Nominal connection diameters on discharge side R 2” - DN 250
  • Nominal connection diameters on inlet side R 2" - DN 250
  • Speed range 1200- 3770 rpm
  • Protection class IP 54 (VR control device)
  • 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 waters which do not attack the materials used, neither chemically nor mechanically, and do not contain any abrasive or long-fibre constituents.
    • Cooling water
    • Potable and process water
    • Fire water

Materials

MVIE 2.. to 16..-6

  • Impellers and stage chambers made of 1.4301/1.4404 stainless steel (MVI 16..-6 only in 1.4301)
  • Pump housing stainless steel 1.4301 / 1.4404
  • Shaft 1.4301 / 1.4404 stainless steel
  • Seal EPDM (EP 851) / FKM (Viton)
  • Housing cover stainless steel 1.4301 / 1.4404
  • Lower housing section 1.4301 / 1.4404 stainless steel
  • Mechanical seal B-carbon/tungsten carbide, SiC/carbon
  • Pressure shroud 1.4301 / 1.4404 stainless steel
  • Bearing, tungsten carbide

Starting with MVIE 16..

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

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 4.., 8.. and MVIE 16.. 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 shut-off ball cock, 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 suction side via pressure gauge.
  • Controller: the system is standard-equipped with a VR Vario controller

Duty chart

Comfort-Vario COR

Downloads

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Page format 209.9 x 296.7 mm
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