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Wilo-Comfort-Vario COR MHIE.../ECe | Wilo

Wilo-Comfort-Vario COR MHIE.../ECe

Your advantages
Wilo-Economy-Comfort-Vario COR MHIE.../ECe

Your advantages

  • Compact system with outstanding price/performance ratio due to MHIE series stainless steel high-pressure multistage centrifugal pumps with integrated air-cooled frequency converters
  • Super proportionally large control range
  • Integrated full motor protection with thermistor sensor (PTC)
  • Integrated dry-running detection with automatic deactivation in the event of low water via the motor control electronics
  • Drinking water approval (ACS, KTW, WRAS) for all components in contact with the fluid (EPDM version)
Series description
Wilo-Comfort-Vario COR MHIE.../ECe


Pressure-boosting system with 2 to 3 non-self-priming stainless steel high-pressure multistage centrifugal pumps switched in parallel with integrated frequency converter


  • Fully automatic water supply and pressure boosting in inlet mode, either from the public water supply network or from a tank, for domestic, commercial, industrial and municipal applications (e.g. residential, office, administration buildings, hotels, hospitals, trades, industry, water supply companies).
  • Pumping of drinking water and process water, cooling water or other service water, which do not affect the materials used, neither chemically nor mechanically, and do not contain any abrasive or long-fibre constituents


  • 2-3 MHIE pumps per system
  • Infinitely variable control mode through the use of pumps with integrated frequency converters
  • 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, PN10, 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
  • ECe-control with IP54 metal housing, consisting of an internal power supply unit, microprocessor, analogue and digital input and output modules for controlling the electronic pumps using frequency converters



Technical data

  • 3~400 V ± 10 %, 50 Hz; 3~380/440 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 10 bar
  • Inlet pressure 6 bar
  • Nominal connection diameter on the discharge side R 2" - DN 100
  • Nominal connection diameter on the intake side R 2" - DN 100
  • Speed range 1200 – 3770 rpm
  • Protection class IP54
  • Communication via ModBus RTU
  • Fuse protection on mains side A, AC 3 according to motor power and EVU regulations
  • Approved fluids (other fluids on request). 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


Single pump:

  • Impellers, stage chambers and pump housing made from 1.4301/1.4404 stainless steel
  • 1.4404 stainless steel shaft
  • Gaskets EPDM (EP851)/FKM (Viton)
  • Mechanical seal made of tungsten carbide/carbon
  • Bearing of tungsten carbide
  • Pump support foot aluminium


  • 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 MHIE series 2.., 4.., 8.. and 16.. switched in parallel are used; the frequency converter adapted to the pump motor enables continuous auto control for all pumps in these series; all pump components coming into contact with liquids are made of 1.4301/1.4404 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/PN 10 located on the discharge side with a butyl rubber diaphragm, completely safe in accordance with food safety laws; for testing and inspection purposes, with a ball valve, as well as drain and throughflow fitting according to DIN 4807
  • Pressure sensor: 4 to 20 mA, located on the discharge side for activating the central ECe-controller
  • Pressure display: suction- and discharge-side pressure gauge (ø 63 mm); additional digital display of discharge pressure in the alphanumeric LCD display of the ECe-controller
  • Controller: the system is standard-equipped with an ECe-controller

Scope of delivery

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

Installation and operating instructions

Wilo-Economy, Wilo-Comfort Vario

Article Number 2551689
Edition 2019-05
Page format 209.9 x 297.0 mm
Number of pages 745
PDF (80 MB)

Wilo-Control EC/ECe-Booster

Article Number 2549070
Edition 2019-07
Page format 209.9 x 297.0 mm
Number of pages 1212
PDF (11 MB)

General overview

General Overview 2022 - International version

Edition 2022
Page format 209.9 x 297.0 mm
Number of pages 78
PDF (38 MB)

Certification booklet

Wilo-Economy, Wilo-Comfort Vario

Article Number 2550650
Edition 2019-05
Page format 209.9 x 297.0 mm
Number of pages 20
PDF (6 MB)

Certificate REACH

REACH Regulation

Edition 2021-05
Page format 209.9 x 297.0 mm
Number of pages 4
PDF (212 KB)