Wilo Medana CH3-LE
Wilo Medana CH3-LE.404-1/E/3/10T 4250156
- Established 1975
- Trusted by thousands of customers
Wilo MEDANA CH3-LE.404-1/E/3/10T multistage monobloc pump, 400 V three-phase
Non-self-priming high-pressure multistage centrifugal pump in horizontal design, equipped with electronically controlled EC motor of energy efficiency class IE5 in accordance with IEC 60034-30-2.
1.1 kW motor. Rp 1 connection.
More about this product
Overview
Non-self-priming high-pressure multistage centrifugal pump in horizontal design, equipped with electronically controlled EC motor of energy efficiency class IE5 in accordance with IEC 60034-30-2.
The pump is suitable for water supply, water distribution and pressure boosting, industrial recirculation systems, process water, closed cooling circuits and heating. It can also be used in washing systems as well as for irrigation.
Specification
| Model | Wilo MEDANA CH3-LE.404-1/E/3/10T |
|---|---|
| Part number | 4250156 |
| Series | Medana CH3-LE |
| Supply | 380 V three-phase, 50/60 Hz / 400 V three-phase, 50/60 Hz / 440 V three-phase, 50/60 Hz |
| Rated power P2 | 1.1 kW |
| Rated current | 2 A |
| Max. operating pressure | 10 bar |
| Fluid temperature | -20 °C to 120 °C |
| Ambient temperature | 0 °C to 50 °C |
| Motor efficiency class | IE5 |
| Protection class | IP55 |
| Insulation class | F |
| Max. inlet pressure | 6 bar |
| Connection type | Screwed connection inner thread |
| Starting | Softstart |
| Motor efficiency at full load | 93.9 % |
Materials
| Pump housing | Stainless steel |
|---|---|
| Impeller | Stainless steel |
| Shaft | Stainless steel |
| Mechanical seal | BQ1E3GG |
| Gasket material | EPDM |
| Stage chamber material | Stainless steel |
Dimensions and weight
| Pipe connection, suction | Rp 1 |
|---|---|
| Pipe connection, discharge | Rp 1 |
| Length × width × height | 538 × 234 × 330 mm |
| Net weight | 21.1 kg |
Features and equipment
Control modes
- Constant speed n-c: manually with green button or via external signals
- Constant pressure p-c, constant differential pressure ∆p-c, variable pressure p-v, variable differential pressure ∆p-v: pressure control with sensor, setpoint adjustment with green button or by means of external signals
- PID control: other constant control variables (temperature, volume flow, pressure….) with sensor, setpoint adjustment with green button, by means of external signals
The electronic module provides various functions
- Max. pressure limit detection
- Min. pressure limit detection
- Lack of water detection by suction sensor
- Zero-flow test (open loop)
- No-Flow Stop (closed loop)
- Dry-running detection
- Volume flow calculation by using differential pressure sensor
- Pump kick
- Error and warning codes
- Overload protection
- Plug-in position for Wilo CIF modules PLR, LON, BACnet MS/TP, Modbus RTU, CANopen, Ethernet Multi-protocol (Modbus TCP, BACnet/IP) for connection to the building automation
- Green LED indicates the pump status
- Blue LED indicates that the pump is influenced externally via an interface
Analogue input
- IN (AI 1): Input sensor signal 4-20 mA, 0-10 V, 0-20 mA or 2-10 V
- IN (AI 2): Input setpoint 0-20 mA, 0-10 V, 4-20 mA or 2-10 V
Digital input IN (DI 1)
- Extern OFF
- Lack of water detection by binary input
Dual pump management (2 x single pumps)
- Main/standby operation
- Pump cycling main/standby operation after 24 hours or automatic fault-actuated switchover
- Wired connection via Wilo Net
Special features/product advantages
- IE5 EC motor and integrated frequency converter in combination with Medana CH hydraulics designed for high hydraulic efficiency
- 2” coloured LCD display, Wilo Green Button Technology and soft button with return function. The pump menu is clearly structured and enables a comfortable setting of the pump.
- Analogue and digital interface as well as CIF module
- Intelligent with various control modes, integrated dual pump management
- Laser-welded 2D/3D hydraulics designed for efficient operation (flow and degassing optimised)
- Corrosion-resistant impellers, guide vanes and stage housings
- Hydraulics designed for optimised flow and degassing performance
- Pump housing designed for optimised flow characteristics and NPSH performance
- Easy-maintenance design
- Drinking water approval for pumps with parts that come in contact with the fluid made of stainless steel (EPDM version)
Scope of delivery
- Medana CH3-LE multistage centrifugal pump
- Installation and operating instructions
Design notes
- Optional plug-in CIF-Modules PLR, LON, BACnet MS/TP, Modbus RTU, CANopen, Ethernet Multi-protocol (Modbus TCP, BACnet/IP) for connection to the building automation
- Optional connection M12 RJ45 CIF Ethernet
- Sensors are available as accessories: differential pressure kit 4 – 20mA and relative pressure kit 4 – 20mA
Frequently asked questions
Standard delivery:
Standard delivery is free on most orders. Some items may incur a delivery charge depending on weight, size or value. Any applicable charge will be displayed at checkout.
Deliveries will typically be made between 7am and 6pm, Monday to Friday (excluding public holidays).
Next day delivery:
Next working day delivery is available for a £16.50 + VAT delivery charge.
Orders must be placed before 12 noon to qualify for next working day delivery. Orders placed after 12 noon on Thursday but before noon on Friday will be delivered the following Monday. Orders placed after 12 noon on Friday will be delivered on Tuesday.
Pallet/Large/Difficult items:
Some large, heavy or difficult to transport items may incur an additional delivery charge. Please contact us for a delivery quote before ordering.
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Frequently Asked Questions
Quick answers to common questions about the Wilo Medana CH3-LE.404-1/E/3/10T 4250156. For technical specifications, see the product details above; for sizing or installation advice, contact our team. If you have any other questions, we're happy to help.
What are centrifugal pumps used for?
Centrifugal pumps use a rotating impeller to move liquids and are commonly used for water transfer, circulation and industrial processes.
How do I choose a centrifugal pump?
Compare the required flow rate, total head, liquid characteristics and electrical supply with each pump’s performance curve.
Are centrifugal pumps suitable for dirty water?
Some are designed for clean water only, while others handle solids or wastewater. Check the particular pump’s permitted liquid and solids specification.
What types of Wilo pumps are available?
Wilo manufactures circulators and other pumping solutions for heating, cooling, water supply and building services applications.
What is a Wilo circulator pump used for?
A Wilo circulator moves water around a heating or cooling circuit to maintain the required flow through the system.
How do I select a replacement Wilo pump?
Match the existing model or confirm head, flow, installation length, connections, voltage and control requirements before ordering.