Robust system with high-pressure stainless steel Helix EXCEL series centrifugal pump with integrated frequency converter with an extremely wide control range from 25 Hz to 60 Hz
High energy efficiency thanks to high-efficiency electronically commutated motors (energy efficiency class IE5 to IEC 60034-30-2) as part of a complete system with optimised pressure drop and high-efficiency pump hydraulics, as well as optimum power control thanks to variable pressure (p-v) and parallel synchronous speed control
High degree of reliability due to integrated safety functions such as overload and dry run protection with automatic shut-off and leak detection and monitoring via optional SCADA interface
Maximum control quality through SCe control unit with LCD display, easy navigation and rotary knob control
Optional connection to a building automation system via Modbus RTU serial protocol
All parts that come into contact with pumped liquid are suitable for contact with drinking water
Wilo-SiBoost Smart Helix EXCEL - Smart pressure booster system with low overall energy consumption
The water supply in densely populated areas is often at risk of leaks. This results in high operating costs. Our solution: The Wilo-SiBoostSmart Helix EXCEL significantly reduces your total energy consumption via high-quality components (hydraulics and motors) and a control unit that detects leaks via additional communication interfaces.

Type

High-efficiency, ready-to-connect water supply unit with 2 to 4 vertically arranged normally aspirated self-priming, high-pressure stainless steel centrifugal pumps of the Helix EXCEL series connected in parallel. Each pump is equipped with an electronically commutated motor with integrated high efficiency air-cooled frequency converter. Valves and sensors are protected to ensure safe and reliable control. The system is equipped with the Smart Controller SCe.

Application

• Automatic water supply systems in supply mode, public water supply, pressure boosting from reservoirs or pressure pipes, for municipal, industrial and private applications (e.g. waterworks, commercial and industrial plants, residential, office, public, administration buildings, hotels, hospitals).
• According to DIN 1988 and DIN EN 806 a back-up pump is included.
• Approved pumped liquids are generally waters, which do not have aggressive chemical and mechanical effects on the materials used and do not contain abrasive and long-fibre constituents, such as
  • Drinking water
  • Cooling water
  • Processing water
  • Extinguishing water (except water for fire extinguishing systems according to DIN 14462; with the approval of the local fire department)

Equipment/function

Each system has 2 to 4 pumps of the Helix EXCEL 2 to Helix EXCEL 52 series with a high efficiency IE5 EC motor and speed control via a built-in frequency converter on each pump.

The SCe control unit provides automatic regulation and control of the pressure boosting unit.

Fully assembled on a height-adjustable galvanized steel base frame with removable cover to protect the plant components (except Helix EXCEL 52 series).

All parts in contact with the pumped liquid are corrosion resistant.

• On the pressure side:
  • Shut-off valves.
  • Non return valve
  • Non return valve
  • Expansion vessel 8 l diaphragm tank, PN 16
  • Pressure sensor 4...20 mA
  • Pressure gauge
• On suction side:
  • Shut-off valve
  • Pressure sensor 4...20 mA
  • Pressure gauge

Scope of delivery

• Factory assembled, tested for failure-free operation and tightness, ready to connect pressure booster system
• Packaging
• Installation and operating instructions

Explanation of designation

Technical Specifications

• Mains connections:
  • 3~400 V ±10%, 50 Hz
  • 3~380 V ±10%, 60 Hz
• Max. temperature of pumped liquid +60 °C (optional +70 °C)
• Max. ambient temperature 40 °C
• Working pressure 16 bar (optional 25 bar)
• Inlet pressure 10 bar
• Nominal diameters for connections:
  • End pressure side R 1½" - DN 200
  • Supply side R 1½" - DN 200
• Speed range 1500 - 3500 rpm
• Protection class IP 54
• Fuse protection A, AC 3 on the motor side according to the motor power rating and the regulations of the power supply company

Materials

• Helix EXCEL 2 - 52 m³/h
  • Stainless steel pump casing 1.4301 [AISI 304]
  • Stainless steel hydraulic part 1.4307 [AISI 304L]
  • EPDM seal
  • with cartridge
• Other models available on request:
  • PN 25
  • Seal in FKM (Viton)
  • Stainless steel pump casing and hydraulic section in 1.4404 [AISI 316L]
  • Removable synthetic plugs (except Helix EXCEL 52)

Description/structure

Baseframe: Zinc plated steel, with height adjustable vibration damping supports, ensuring good structure-borne sound insulation, as well as integrated support points and conduit.

Piping system: A complete stainless steel piping system, suitable for connecting pipes of all common materials. The piping system is designed in accordance with the total hydraulic capacity of the pressure boosting unit.

Pumps: 2 to 4 pumps of the Helix EXCEL 2 to Helix EXCEL 52 series connected in parallel are used. Air-cooled frequency converters, mounted on the pump motor, provide for all pumps of these series a stepless regulation range from 25 Hz to max. 60 Hz. All parts of these pumps in contact with the pumped liquid are made of stainless steel with KTW/WRAS/ACS approval. The ES version uses AISI 316 stainless steel pumps.

Valves: Every pump is equipped on the pressure and suction side with a ball check valve as standard with DVGW approval mark and on the pressure side with a non-return valve with DVGW/KTW approval.

Diaphragm pressure vessel 8 l/PN 16 on the discharge side with a butyl rubber diaphragm, DVGW/KTW approval, compliant with food safety laws, equipped with a shut-off ball cock for inspection and testing purposes, with a drainage system and flow fittings with DVGW/KTW approval to DIN 4807.

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

Pressure indication: Pressure gauge located on the suction and final pressure sides.

Removable blanking plugs: Suction and pressure sides provide optimal protection for control components and sensors against wire breakage and premature wear (except Helix EXCEL 52 series)

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

Other versions on request