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Wilo-Sub TWU 4 Plug & Pump

Series description

Design

Water-supply unit with submersible-motor pump, control and complete accessories.

Application

Water-supply unit for self-sufficient water supply in the domestic sector

  • Washing machines
  • Garden sprinkling
  • Transferring by pumping and filling
  • Taps for process water

Type key

E.g.Wilo-Sub TWU 4-0405-C-P&P/FC
TWUSubmersible pump
4Diameter of the hydraulic unit in inches ["]
04Rated volume flow [m3/h]
05Number of hydraulic stages
CSeries generation
P&PPlug & Pump system
FCVersion
FC = Sub I package with HiControl 1
DS = Sub II package with pressure switching

Special features/product advantages

  • Easy installation due to preinstalled and pre-wired components
  • Parts that come in contact with fluids are corrosion-free
  • Integrated non-return valve
  • Low-wearing due to floating impellers

Equipment/function

  • Multistage submersible-motor pump with radial impellers
  • Integrated non-return valve
  • NEMA coupling
  • Single-phase motor
  • Thermal motor protection
  • Dry-running protection system (only with Wilo-Plug & Pump Sub‐I package)

Technical data

  • Minimum Efficiency Index (MEI) ≥ 0.7
  • Mains connection: 1~230 V, 50 Hz
  • Immersed operating mode: S1
  • Fluid temperature: 3-30 °C
  • Minimum flow rate at motor: 0.08 m/s
  • Max. sand content: 50 g/m3
  • Max. number of starts: 20/h
  • Max. immersion depth: 27 m
  • Protection class: IP 68
  • Pressure connection: Rp 1¼

Materials

  • Hydraulic housing: stainless steel 1.4301
  • Impellers: Noryl
  • Hydraulics shaft: 1.4104 stainless steel
  • Motor housing: 1.4301 stainless steel
  • Motor shaft: 1.4305 stainless steel

Description/design

Submersible-motor pump for vertical or horizontal installation.

Hydraulics

Multistage submersible-motor pump with radial impellers with sectional construction. Integrated non-return valve. All parts in contact with the fluid are made of corrosion-free materials.

Motor

Corrosion-free single-phase AC motor for direct starting without soft starter. Sealed and hermetically cast motor with enamel-insulated winding, resin-impregnated, self-lubricating bearing, with water-glycol filling.

Cooling

The motor is cooled by the fluid. The motor must always be operated in submerged state. The limit values for the max. fluid temperature and the minimum flow rate must not be exceeded. Vertical installation is possible optionally with or without cooling jacket. Cooling jacket is required for horizontal installation.

Configuration

  • No suction mode is possible with these units!
  • The unit must be fully immersed in water during operation.

Scope of delivery

Wilo Plug & Pump Sub‐I package for garden irrigation of private greenery in the domestic sector:

  • Fully mounted
  • 30 m connection cable approved for drinking water (cross-section: 4x1.5 mm2)
  • Switchbox with capacitor, thermal motor protection and On/Off switch
  • Wilo-HiControl 1 (FC); automatic flow monitor and pressure controller with integrated dry-running protection
  • 30 m guy cable
  • Assembly parts: 2x screwed clamp ring connections, R 1¼ to R 1 reducer, 8x cable binders
  • Installation and operating instructions

Wilo Plug & Pump Sub‐II package for self-sufficient water supply in single-family and multi-family houses:

  • Fully mounted
  • 30 m connection cable approved for drinking water (cross-section: 4x1.5 mm2)
  • Switchbox with capacitor, thermal motor protection and On/Off switch
  • Wilo pressure switching 0 – 10 bar, including 18 l diaphragm expansion tank, manometer, shut-off device and pressure switch
  • 30 m guy cable
  • Assembly parts: T-iron, R 1¼ to R 1 reducer, 8x cable binders
  • Installation and operating instructions

General notes - ErP (ecological design-) directive

The benchmark for most efficient water pumps is MEI ≥ 0.70The efficiency of a pump with a trimmed impeller is usually lower than that of a pump with the full impeller diameter. The trimming of the impeller will adapt the pump to a fixed duty point, leading to reduced energy consumption. The minimum efficiency index (MEI) is based on the full impeller diameter.The operation of this water pump with variable duty points may be more efficient and economic when controlled, for example, by the use of a variable speed drive that matches the pump duty to the system.Information on benchmark efficiency is available at www.europump.org/efficiencycharts

Duty chart

Duty chart

Product

Design

NEMA connection

Standardised connection

-

Integrated non-return valve

Without non-return valve

-

AC motor

Three-phase motor

-

Direct activation

Star-delta activation

-

FC operation

Motor with cast stator

Rewindable motor

-

Oil motor filling

-

Water-glycol motor filling

Drinking water motor filling

-

Hydraulics/motor preassembled

Application

Horizontal installation

Vertical installation

Equipment/function

Motor temperature monitoring, PT100

-

PTC motor temperature monitoring

-

Capacitor box for 1~230 V

Dry-running protection

Integrated lightning protection

-

Accessories

Bearing brackets for horizontal installation

-

Cooling jacket

º

Non-return valve

-

Pressure shroud

-

Materials

Pump housing

Stainless steel

Pump housing (special version)

Impeller

Plastic

Impeller (special version)

Motor housing

Stainless steel

Motor housing (special version)

Downloads

Certification Booklet Wilo-Sub TWU 4

Article Number 6080453
Edition 1701
Version number 02
Page format A4
Number of pages 8

PDF (522 kB)

Download

General overview

Edition 2017
Page format A4
Number of pages 72

PDF (46 MB)

Download

Wilo-Sub TWU 4…, TWU 4-…-QC, TWU 4-…-P&P

Article Number 2019023
Edition 1103
Version number 03
Page format A4
Number of pages 30

PDF (578 kB)

Download

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General Overview 2018

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