Reliable provision of water to geodetically high tap connections.
Fluctuating water consumption in various buildings, such as schools, hospitals and hotels, requires flexible systems that correspond to individual requirements. Wilo pressure boosting installations provide a reliable supply.
Design
Water-supply unit with a glandless, non-self-priming high-pressure multistage centrifugal pump Application
Fully automatic water supply in intake mode, either from the public water supply network or from a tank.
Pumping of potable water, process water, cooling water, water for fire-fighting or other water mixtures that do not chemically or mechanically attack the materials used and do not contain abrasive or long-fibre constituents.
Technical data
- Mains connection 3~230/400 V ±10%, 50 Hz (other versions on request)
- Fluid temperature max. 50 °C
- Ambient temperature max. 40 °C
- Operating pressure 6 bar
- Inlet pressure 6 bar
- Switching pressure stage 6/10/16 bar
- Nominal connection diameters, on discharge side R 1¼
- Nominal connection diameters, on intake side Rp 1¼ – Rp 1½
- Nominal speed 2800 rpm
- Protection class: IP 41
- Switching capacity P2 max. at max. 10 A = 4 kW (for > 4 kW downstream electromechanical power section)
- Fuse on mains side [AC 3] according motor power and EVU regulations
- Approved fluids (other fluids on request):
- Pure water without settling sediment
- Process water, cold water, cooling water and rainwater
- Potable water
- Fire water (wet line; for dry lines on request – comply with separate specifications of DIN 1988 (EN 806) and of fire-protection authorities.
Note on fluids: Approved fluids are generally water mixtures which do not chemically or mechanically attack the materials used and do not contain either abrasive or fibrous matter
Equipment/function
- 1 MVIS series pump
- Maximum stage number: 10
- Three-phase current glandless pump motor
- Components that come in contact with fluid are corrosion-resistant
- Base frame made of galvanised 1.4301 stainless steel, with height-adjustable vibration absorbers for insulation against structure-borne noise
- Check valve, pressure side
- Non-return valve, on pressure side
- Diaphragm pressure vessel 8 l, PN16, pressure side
Description/design
- Connection-ready water-supply unit, mounted on base frame made of 1.4301 stainless steel including vibration absorber, complete pipework made of 1.4571 stainless steel, including all necessary fittings and check valves (except for inlet-side check valve) made of red brass/brass, pressure control kit, stainless steel glandless high-pressure multistage centrifugal pump (MVIS) and ER-1 switchgear, mounted, wired and ready for connection; Trip electronics in switchgear for low-water protection.
- Diaphragm pressure vessel: 8 l/PN 16 located on the discharge side with a butyl rubber diaphragm, completely safe in accordance with food safety laws; complete with Ni-coated CuZn shut-off ball cock for tests and inspections, with drain and throughflow fitting in accordance with DIN 4807
- Control device: the system is standard-equipped with an ER-1 Economy Controller
Materials
- Foot 1.4301 stainless steel
- Impellers 1.4301 stainless steel
- Stage chambers 1.4301 stainless steel
- Pressure shroud 1.4301 stainless steel
- Shaft 1.4122 stainless steel
- Bearing/mechanical seal made of carbon, resin-impregnated
- Pipework made of 1.4571 stainless steel
Scope of delivery
- Factory-mounted, connection-ready pressure boosting system checked for functionality and impermeability
- Packaging
- Installation and operating instructions
