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Wilo-Comfort Pump

wilo-comfort-pump-transfer-pompaDesign

 

Highly efficient water-supply unit ready for connection (non self-priming). With 2 to 6 vertically arranged Helix VE series stainless steel high-pressure centrifugal pumps in glanded version switched in parallel; every pump is equipped with an integrated air-cooled frequency converter, including Comfort Controller CCe

 

 

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, process water, cooling water, fire water (apart from fire-extinguishing systems in accordance with DIN14462) or other water mixtures that do not attack the materials used chemically or mechanically and do not contain abrasive or long-fibre constituents

 

Type key

 

Example: Wilo-COR-4 Helix VE 1603/K/VR
COR Compact pressure boosting system with integrated speed control of each pump
4 Number of pumps
Helix VE Pump series
16 Rated volume flow [m3/h] of the single pump
03 Number of single pump stages
K With cartridge mechanical seal
5.5 Rated motor power P2 in kW [only included if more than one motor is available for types with the same hydraulic output]
CCe Control device; CCe = Comfort Controller for pumps with integrated frequency converter

 

Special features/product advantages

 

  • Sturdy system with Helix VE stainless steel high-pressure circulation pumps with integrated frequency converter that can be controlled from 25 Hz to 60 Hz
  • High-efficiency pump hydraulics
  • Entire system is pressure-loss optimised
  • Integrated dry-running detection with automatic deactivation via the motor control electronics
  • Maximum degree of control using the CCe control device with additional functions, micro-computer control and touch display

 

Technical data

 

  • Mains connection 3~400 V ± 10%, 50 Hz; 3~380/440 V ±10 %, 60 Hz
  • Max. fluid temperature +50 °C (+70 °C optional)
  • Ambient temperature max. 40 °C
  • Operating pressure 16 bar (25 bar optional)
  • Inlet pressure 10 bar
  • Nominal connection diameters on discharge side R 1½ ‐ DN 125
  • Nominal connection diameters on inlet side R 1½” – DN 125
  • Speed range 1500-3770 rpm
  • Protection class: IP 54
  • Fuse protection on mains side A, AC 3 according to motor power and EVU regulations
  • Approved fluids (other fluids on request):
    • Drinking water and domestic hot water
    • Cooling water
    • Fire water

    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. System in accordance with DIN 1988 (EN 806)

 

Equipment/function

 

  • 2-6 pumps per system of the Helix VE 4 to Helix VE 16 series, with IE2-equivalent standard motors and variable auto control with integrated frequency converter for each pump
  • Automatic pump control via Comfort Controller CCe
  • Parts that come in contact with the fluid are corrosion-resistant
  • Base frame made of galvanised steel, with height-adjustable vibration absorbers for insulation against structure-borne noise
  • Check valve on the suction and pressure sides of each pump
  • Non-return valve on the pressure side of each pump
  • Diaphragm pressure vessel 8 l, PN16, pressure side
  • Pressure sensor, pressure side
  • Pressure gauge, pressure side
  • Optional low-water cut-out switchgear with pressure gauge, suction side

 

Description/design

 

  • Base frame: galvanised steel, 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; the pipework is dimensioned according to the overall hydraulic performance of the pressure boosting system
  • Pumps: 2 to 6 pumps of the Helix VE 4.., 6.., 10.., 16.. series are used, which are connected in parallel. The air-cooled frequency converters mounted on the pump motor enable infinitely variable control between 25 Hz and a maximum of 60 Hz for all pumps of this series. All parts which come in contact with fluid are made of stainless steel for the Helix VE 4.., 6.., 10.., 16..; other versions on request. KTW/WRAS/ACS approval for all parts that come in contact with the fluid
  • Valves: With the Helix VE 4.., 6.., 10.., 16.. series, every pump is fitted on the suction and pressure side with a check valve with DVGW approval mark and on the pressure side with a non-return valve with DVGW/KTW approval
  • Diaphragm pressure vessel: 8 l/PN16 to be arranged on the discharge side. With a diaphragm made of butyl rubber, with DVGW/KTW approval, completely safe in accordance with food safety laws for testing and inspection purposes, with drain and throughflow valve with DVGW/KTW approval in accordance with DIN 4807.
  • Pressure sensor: 4 to 20 mA, located on the discharge side for controlling the central Comfort Controller CCe
  • Pressure indication: pressure gauge (ø 63 mm) arranged on the discharge side; additional digital indication of the discharge pressure on the alphanumeric touchscreen on the Comfort Controller
  • Switchgear/controller: The system is equipped with a Comfort Controller CCe as standard

 

Materials

 

For the series with Helix VE 4 to VE 16:

  • Impellers, diffusers, stage housing made of stainless steel 1.4307
  • Pump housing made of stainless steel 1.4301
  • Shaft made of stainless steel 1.4057
  • 1.4404 shaft protection sleeve
  • O-ring gaskets made of EPDM (FKM gasket on request)
  • Pipework made of stainless steel 1.4571

 

Scope of delivery

 

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

 

Planning guide

 

Inlet pressure

The maximum inlet pressure (see Technical data) must be taken into account when configuring the system. The maximum permissible inlet pressure is calculated from the maximum operating pressure of the system minus the maximum pump delivery head at Q = 0

Pressure reducer

Fluctuating inlet pressure is compensated by the speed control integrated into each single pump as long as the pressure fluctuation is not greater than the difference between the setpoint pressure value and the zero-delivery head of the single pump at minimum speed. If the pressure fluctuation is greater, a pressure reducing valve must be installed upstream of the system.

Volume flow

Up to 155 m3/h (43 l/s) system configuration in accordance with DIN 1988 (EN 806); with standby pump up to 185 mm3/h (51 l/s) during operation of the standby pump as an auxiliary peak-load unit

Residual-current-operated protection

switch

When installing residual-current-operated protection switches in conjunction with frequency converters, bear in mind that only universal-current-sensitive residual-current-operated protection switches in accordance with DIN/VDE 0664 are to be fitted.

Wilo-WMS low-water cut-out switchgear

The series Helix VE pump being used is already equipped with an integrated dry-running detection as safety equipment for the pump. Nevertheless, the installation of a low-water cut-out switchgear is required in cases where the pressure boosting systems are connected directly to a public mains power supply; that prevents the inlet pressure in the mains supply line from falling below 1.0 bar. Please order directly when ordering the pressure boosting system. The WMS will then be installed in the pressure boosting system, electrically wired and fully tested by Wilo during the final functional test.

Standards/directives

The overall system conforms with the requirements of

  • DIN 1988 Part 5
  • DIN 1988 Part 6* (**)

* The specifications in DIN 1988 (EN 806) and of the water-supply companies are to be observed. Regarding the electrical components, the system conforms with the requirements of

  • VDE 0100 Part 430/Part 540
  • VDE 0110 Part 1/Part 2
  • VDE 0660 Part 101/Part 107 and
  • DIN 40719/IEC 754

Always observe the specifications in DIN 1988 (EN 806) when using and operating the pressure boosting system.(**) That does not apply to fire extinguishing systems in accordance with DIN 14462. Please request these separately.

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