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CronoTwin-DL 50/140-4/2 | Wilo
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CronoTwin-DL 50/140-4/2

Article number: 2121026
Technical data
Hydraulic data
Minimum efficiency index (MEI) ≥0.4
Min. fluid temperature Tmin -20 °C
Max. fluid temperature Tmax 140 °C
Max. ambient temperature Tmax 40 °C
Maximum operating pressure PN 16 bar
Note on dimensioning 16 bar to 120 °C, 13 bar to 140 °C
Motor data
Mains connection 3~400 V, 50 Hz
Number of poles 2
Voltage tolerance ±10 %
Motor efficiency class IE3
Rated power P2 4 kW
Rated current IN 7.96 A
Rated speed n 2900 1/min
Power factor cos φ100 0.83
Motor efficiency 50% ηM 50% 85.7 %
Motor efficiency 75% ηM 75% 87.5 %
Motor efficiency 100% ηM 100% 88.1 %
Motor winding up to 3 kW -
Motor winding from 4 kW -
Insulation class F
Protection class motor IP55
Motor protection no
Materials
Pump housing Grey cast iron
Impeller Grey cast iron EN-GJL-200
Shaft Stainless steel
Mechanical seal AQ1EGG
Lantern Grey cast iron
Installation dimensions
Pipe connection on the suction side DNs DN 50
Pipe connection on the discharge side DNd DN 50
Port-to-port length L0 340 mm

CronoTwin-DL 50/140-4/2

∆: Connection diagram delta connection

Y: Connection diagram star connection

Motor protection switch required on-site. Check the direction of rotation! To change the direction of rotation, exchange any two phases.

P2≤ 3 kW 3~400 V Y
  3~230 V ∆
P2≥ 4 kW 3~690 V Y
  3~400 V ∆

After removing the bridges, Y-∆ start is possible.

Product data
Brand Wilo
Product description CronoTwin-DL 50/140-4/2
Article number 2121026
EAN number 4048482220062
Colour Green
Minimum order quantity 1
Date of sales availability 2015-09-01
Packaging
Packaging type Euro pallet
Packaging property Transport packaging
Pieces per pallet 1
Number per layer 1
Dimension, weight
Length with packaging 1200 mm
Length L 632 mm
Height with packaging 600 mm
Height H 340 mm
Width with packaging 800 mm
Width W 624 mm
Gross weight, approx. m 172 kg
Net weight, approx. m 130 kg
Tender text

In-line twin-head pump with two single-stage glanded centrifugal pumps in the same housing with switchover valve, for pipe installation or installation on a base. Housing blind flange and mounting brackets available at additional charge. Low-vibration and low-noise monobloc design with lantern and rigidly connected standard flange motor (standard motor). With forced-flow circulation, bidirectional bellows mechanical seal and cavitation-reducing impeller. Flanges with pressure measuring connections R 1/8. The pump housing and lantern are cataphoretic-coated.

Motors in IE3 technology as standard. Pump with motor ≥ 5.5 kW are equipped as standard with a PTC thermistor sensor for motor protection.

The motor terminal box ≤ 7.5 kW can be made of metal or plastic. If a metal terminal box is absolutely necessary, please order the appropriate special variant. The motor terminal boxes > 7.5 kW are always made of metal.

Operating Data
Min. fluid temperature Tmin -20 °C
Max. fluid temperature Tmax 140 °C
Min. ambient temperature Tmin -15 °C
Max. ambient temperature Tmax 40 °C
Maximum operating pressure PN 16 bar
Note on dimensioning 16 bar to 120 °C, 13 bar to 140 °C
Minimum efficiency index (MEI) ≥0.4
Motor data
Motor efficiency class IE3
Mains connection 3~400 V, 50 Hz
Voltage tolerance ±10 %
Rated power P2 4000 W
Rated speed n 2900 1/min
Rated current IN 7.96 A
Power factor cos φ100 0.83
Motor efficiency 50% ηM 50% 85.7 %
Motor efficiency 75% ηM 75% 87.5 %
Motor efficiency 100% ηM 100% 88.1 %
Insulation class F
Protection class IP55
Materials
Pump housing Grey cast iron
Impeller Grey cast iron
Shaft Stainless steel
Shaft seal AQ1EGG
Lantern Grey cast iron
Installation dimensions
Pipe connection on the suction side DNs DN 50
Pipe connection on the discharge side DNd DN 50
Ordering information
Brand Wilo
Product description CronoTwin-DL 50/140-4/2
Net weight, approx. m 130 kg
Article number 2121026
Documents

Installation and operating instructions

Wilo-Wilo-CronoLine-IL Wilo-CronoTwin-DL Wilo-CronoBloc-BL

Article Number 2202024
Edition 2018-07
Number of pages 128
Language de, en, fr, nl
PDF (12 MB)

Group Statement

Group Statement REACH

Edition 2021-05
Number of pages 5
Language language neutral
PDF (327 KB)

Acustic Spectrum (Octave band)

CronoTwin-DL 50/140-4/2

Number of pages 1
Language language neutral
PDF (165 KB)
BIM/CAD

3D_DWG

DL50/140-4/2

Language language neutral
DWG (2 MB)

3D_STEP

DL50/140-4/2

Language language neutral
STP (3 MB)

2D_DWG_TOP

DL50/140-4/2

Language language neutral
DWG (22 KB)

2D_DWG_FRONT

DL50/140-4/2

Language language neutral
DWG (24 KB)

2D_DWG_RIGHT

DL50/140-4/2

Language language neutral
DWG (28 KB)
Accessory

Continuous, infinitely variable control, differential pressure-sensitive CC-HVAC system (27)

Continuous, infinitely variable control, temperature-dependent CC-HVAC system (23)

Continuous, infinitely variable control, differential pressure-sensitive SC-HVAC system (25)

Continuous, infinitely variable control, temperature-dependent SC-HVAC system (19)

Pipe installation, adapter fitting (5)

Wall fixation/installation on a base (1)

Maintenance/replacement mechanical accessories (1)

Pump control (1)

Pump control/accessories (29)

Pump control/Comfort control system (4)

Pump control/Smart control system (8)

Differential pressure detection (5)

Motor protection (2)

Services

With Wilo as your partner, you can not only be sure of choosing high-quality product solutions, but also of benefiting from a comprehensive, worry-free package of well thought-out services. We collaborate to develop a service concept tailored to your individual needs; with our expertise and personal consultancy, we make sure that the operation of your systems is as energy-efficient, reliable and economical as possible. All the while our competent Wilo service technicians are ready to assist you with fast, reliable and on-time support.

Read more

Recommended services

Wilo-Live Assistant
Wilo-Live Assistant Service
    
2216415

The Wilo-Live Assistant is a technical advisor at your side during pump service. By using the Wilo-Live Assistant, our expert advisers can support you in the boiler or equipment room via video transmission – live and in real time. You use your smartphone to show the installation set-up, while the Wilo expert follows everything on their screen. They can see the components as well as other details and can thus determine where the fault or breakdown originates. We prevent downtime and ensure operational reliability of your pumps and systems!

The Wilo-Live Assistant includes:

  • Interactive live support via video chat
  • Direct contact with an expert
  • Just-in-time solution to ensure maximum operational reliability of your pumps and systems
Supervision
Supervision Glanded pumps
    
2219321

Wilo supports during the concept phase to ensure quality work and cost efficiency. Our competent and qualified Wilo Service will support you with recommendations and technical advice throughout the entire project.

Supervision includes:

  • Regular on-site visits ensure the quality of information and advice
  • Technical consultancy, also available on site
  • Status report with recommendations after the visit
  • Comprehensive support from a Wilo expert
Commissioning
Commissioning Glanded pumps
    
2219391

For perfect functioning of the pump(s) / system(s), it is recommended to have the commissioning carried out by the works' own WILO SE Customer Service Department. Optimum setting and efficient operation of the system are ensured as a result. Commissioning is comprised of the following points:

  • Commissioning of system(s) according to checklist
  • Parameterisation and setting of switchgear
  • Testing and adaptation of initial compressing of pressure tanks (filling up to 80 litres incl.)
  • Functional check of fitted system(s)
  • Practice-oriented operation instruction
  • Wilo commissioning protocol

The price for commissioning only applies to system(s) which have been installed in accordance with the installation and operating instructions and state-of-the-art technology. No costs for any materials which may be required are included.

Maintenance
Maintenance BASIC Glanded pumps
    
2219531

In order to ensure and guarantee operational reliability of the pumps/systems, it is recommended to have regular and DIN-compliant inspections and maintenance carried out by the works' own WILO SE Customer Service Department. The tasks are carried out in accordance with DIN 31051 / DIN EN 13306. The tasks comprise the following points:

  • Visual inspection of the pumps/systems
  • Mechanical check
  • Electrical check
  • Testing pressure vessels that may be on hand
  • Review and, if necessary, adjustment of the system parameters
  • Creating a maintenance protocol

Scheduling and organisation is performed by WILO. Other individual maintenance offers are possible on request.

Maintenance COMFORT Glanded pumps
    
2219493

In order to ensure and guarantee operational reliability of the pumps/systems, it is recommended to have regular and DIN-compliant inspections and maintenance carried out by the works' own WILO SE Customer Service Department. The tasks are carried out in accordance with DIN 31051 / DIN EN 13306. The tasks comprise the following points:

  • Visual inspection of the pumps/systems
  • Mechanical check
  • Electrical check
  • Testing and possible filling of pressure vessels that may be on hand
  • Review and, if necessary, adjustment of the system parameters
  • Creating a maintenance protocol
  • Consumable materials are included in the contract price
  • Elimination of payroll and travel expenses for deployments between maintenance intervals (during normal service hours)

Scheduling and organisation is performed by WILO. Other individual maintenance offers are possible on request.

Maintenance PREMIUM Glanded pumps
    
2219546

In order to ensure and guarantee operational reliability of the pumps/systems, it is recommended to have regular and DIN-compliant inspections and maintenance carried out by the works' own WILO SE Customer Service Department. The tasks are carried out in accordance with DIN 31051 / DIN EN 13306. The tasks comprise the following points:

  • Visual inspection of the pumps/systems
  • Mechanical check
  • Electrical check
  • Testing and possible filling of pressure vessels that may be on hand
  • Checking the system parameters
  • Creating a maintenance protocol
  • Consumable materials are included in the contract price
  • Elimination of payroll and travel expenses for deployments between maintenance intervals (during and outside normal service hours)
  • Software updates
  • Includes wearing parts

Scheduling and organisation is performed by WILO. Other individual maintenance offers are possible on request.

More suitable services

Service packages
Service Package L Glanded pumps
    
2219697

The Wilo service offers predefined service packages in three sizes to make it easier to combine individual services.

The Wilo-Service package L includes:

  • Installation check
  • Supervision
  • Commissioning
  • Maintenance
  • Energy Solutions
  • WiloCare Premium
  • Wilo-Live Assistant

Optional add-on services:

  • System Optimisation
  • Repairs
  • Extended Warranty
Service Package M Glanded pumps
    
2219668

The Wilo service offers predefined service packages in three sizes to make it easier to combine individual services.

The Wilo-Service package M includes:

  • Installation check
  • Supervision
  • Commissioning
  • Maintenance
  • WiloCare Comfort
  • Wilo-Live Assistant

Optional add-on services:

  • System Optimisation
  • Energy Solutions
  • Repairs
  • Extended Warranty
Service Package S Glanded pumps
    
2219639

The Wilo service offers predefined service packages in three sizes to make it easier to combine individual services.

The Wilo-Service package S includes:

  • Installation check
  • Commissioning
  • Maintenance
  • WiloCare Basic
  • Wilo-Live Assistant

Optional add-on services:

  • System Optimisation
  • Energy Solutions
  • Supervision
  • Repairs
  • Extended Warranty
Extended Warranty
Extended Warranty Glanded pumps
    
2219590

In combination of a new pump or system Wilo offers an extended warranty of up to five years in combination with commissioning and maintenance by the Wilo Service.

Extended warranty includes:

  • Full protection and predictable cost security
  • Regular maintenance work by the Wilo Service
Installation
Installation Glanded pumps
    
2219356

The Wilo service offers installation of our pumps or pumping systems. We offer an end-to-end process from gathering information on site to installing our product in the overall plant. An optimal installation set-up and the interaction of various individual factors lay the foundation for long-term operational safety.

Installation includes:

  • Professional inspection
  • Provision of components/materials from Wilo and third-party suppliers
  • Installation of pipelines and electronics
  • Test runs
System Optimisation
System Optimisation Glanded pumps
    
2219251

The Wilo Service offers proactive system optimisation by optimising settings and doing minor adjustments to ensure operational reliability. System Optimisation includes among others:

  • Overhaul of pumps/systems to restore full performance
  • Addition of new technologies or functions in older systems to save on capital expenditures (retrofitting)
Energy Solutions
Energy Solutions Glanded pumps
    
2219240

Wilo Service offers a proactive support to point out possible energy savings. Our service creates an overview of all installed assets to show how the energy consumption of pumps or systems can be reduced. We offer targeted consultancy and analysis, including the involvement of subsidies as well as comprehensive support around the changeover to high-efficiency technologies. Wilo-Energy solution includes:

  • Detailed assessment of the life cycle costs (LCC analysis)
  • Energy audit including information about energy saving potential
  • Proactive recommendation of replacement options
  • Improving the environmental performance of your system
  • Support in the changeover to Wilo high-efficiency pumps
Repair
Repair Glanded pumps
    
2219610

Wilo Service draws on their competence and experience while consulting on site to decide whether the pump can actually be repaired on site or has to be sent in for a factory repair. Wilo also provides spare parts or a replacement pump to restore the operational reliability of the system.

Repair includes:

  • Verification and elimination of error causes by experienced Wilo experts
  • Non-binding estimate for repairs
  • Electric-hydraulic test run to ensure correct data regarding functionality, quality and performance of the pump or system
  • Coating of various pump or system components for an optimised efficiency factor
  • Use of genuine spare parts only
  • Documentation of the repair in the service report