Your advantages

• Sturdy system with stainless steel high-pressure multistage centrifugal pumps of the Helix VE series with integrated frequency converter
• Over-proportionally wide control range from 25 Hz up to a maximum of 60 Hz
• Pressure-loss optimised entire system
• Integrated dry-run detection with automatic deactivation via the motor control electronics
• Maximum degree of control using the SCe control device with LCD display, simple navigation and adjustment using rotary knob

Construction

Highly efficient water-supply unit ready for connection with 2 to 4 vertically arranged non-self-priming stainless steel high-pressure multistage centrifugal pumps of the Helix VE series switched in parallel, each pump is equipped with an integrated air-cooled frequency inverter. The system features a Smart Controller SCe.

Application

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). Standby pump included in accordance with DIN 1988 and DIN EN 806.

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
• Firefighting water (apart from fire-extinguishing systems in accordance with DIN 14462 and with the approval of the local fire safety authorities)

Equipment/function

2-4 pumps per system of the Helix VE 2 to Helix VE 52 series, with IE4-equivalent standard motor speed controlled via integrated frequency inverter on each pump.

SCe control panel ensures automatic control of the complete booster set.

All is mounted on galvanized steel height adjustable base frame.

All components in contact with fluid are corrosion resistant.

On pressure side:

• Shut-off valve
• Non return valve
• Check-valve at each pump
• Diaphragm pressure vessel 8 l, PN 16
• Pressure sensor 4..20mA
• Pressure gauge

On suction side:

• Shut-off valve
• Pressure sensor 4..20mA
• Pressure gauge

Scope of delivery

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

Type key

Technical data

• Mains connections :
• 3~400 ±10 %, 50 Hz
• 3~380 ±10 %, 60 Hz
• Max. fluid temperature +60 °C (+70 °C optional)
• Max. ambient temperature of 40 °C
• Operating pressure 16 bar (25 bar optional)
• Inlet pressure 10 bar
• Nominal connection diameters:
• on discharge side R 1½ - DN 200
• on inlet side R 1½" - DN 200
• Speed range 1500 – 3500rpm
• Protection class IP54
• Fuse protection A on mains side, AC 3 according to motor power and EVU regulations

Materials

Helix VE 6’’: 2-16 m3/h

• Pump housing in 1.4301 [Aisi 304]
• Hydraulics in 1.4307 [Aisi 304L]
• Gasket EPDM
• without cartridge except pumps with motors above 7,5kw

Helix VE 8’’: 22-52 m3/h

• Pump housing in EN-GJL-250, ACS/ WRAS cataphoretic-coated grey cast iron
• Hydraulics in 1.4307 [Aisi 304L]
• Gasket EPDM
• without cartridge except pumps with motors above 15kw
• ES version: stainless steel design
• Pump housing in 1.4301 [Aisi 304]
• Hydraulics in 1.4307 [Aisi 304L]

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]

Description/construction

Base frame: galvanized steel, with height-adjustable vibration absorbers for comprehensive insulation against structure-borne noise as well as integrated lifting points and cables tray

Pipework: Complete pipework made of stainless steel, suitable for the connection of all conventional piping materials. The pipework is dimensioned according to the overall hydraulic performance of the pressure boosting system

Pumps: 2 to 4 pumps from the series Helix VE 2 up to Helix VE 52 switched in parallel are used. The air-cooled frequency inverters mounted on the pump motors enable continuous auto control between 25 Hz and a maximum of 60 Hz for all pumps of this series.

• For 6” pumps Helix VE 2,4,6,8,10,16 : all pump parts in contact with the fluid are made of stainless steel with KTW/WRAS/ACS approval.
• For 8” pumps: Helix VE 22, 36, 52 :as standard, all parts in contact with the fluid are made of stainless steel and grey cast iron with cataphoretic coating with ACS/WRAS approval. Stainless steel ES versions with KTW/WRAS/ACS.

Valves: Each pump is fitted on the suction and pressure side with a standard shut-off unit with DVGW approval mark and on the pressure side with a DVGW/KTW-approved non-return valve.

Diaphragm pressure vessel: 8 l/PN 16 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 a ball valve with drain and throughflow fitting with DVGW/KTW approval in accordance with DIN 4807.

Pressure monitoring: 2 Pressure sensors: 4..20 mA, located on the pressure and suction sides.

Pressure indication: pressure gauge arranged on the suction and the discharge sides.

Control panel: Smart Controller SCe as standard with LCD display.

Other versions on request