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Star-STG 25/6 | Wilo
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Star-STG 25/6

Article number: 4050266
Technical data
Hydraulic data
Maximum operating pressure PN 10 bar
Min. fluid temperature Tmin -10 °C
Max. fluid temperature Tmax 110 °C
Materials
Pump housing Grey cast iron
Impeller PP
Shaft Stainless steel
Bearing Carbon, metal-impregnated
Motor data
Mains connection 1~230 V, 50 Hz
Rated current IN 0.28 A
Max. speed nmax 2750 1/min
Power consumption P1(Q=max.) of selected impeller * number of pumps P1 63 W
Emitted interference EN 61000-6-3
Interference resistance EN 61000-6-2
Protection class motor IP44
Installation dimensions
Pipe connection on the suction side DNs G 1½
Port-to-port length L0 180 mm

Star ST

Star-E

Blocking current-proof motor

Single-phase motor (EM) 2‐pole ‐ 1~230 V, 50 Hz

With built-in capacitor

Product data
Brand Wilo
Product description Star-STG 25/6
Article number 4050266
EAN number 4016322469667
Colour Green
Minimum order quantity 1
Date of sales availability 2012-09-01
Packaging
Packaging type Cardboard box
Packaging property Sales packaging
Pieces per pallet 180
Number per layer 30
Dimension, weight
Length with packaging 156 mm
Length L 130 mm
Height with packaging 132 mm
Height H 100 mm
Width with packaging 188 mm
Width W 180 mm
Gross weight, approx. m 2.7 kg
Net weight, approx. m 2.6 kg
Tender text

Glandless circulation pump with special hydraulics for primary circuits in solar and geothermal systems. With manual 3-stage speed connection and blocking-current proof AC motor. Cast iron pump housing with cataphoretic coating. Impeller made of GF polypropylene. Stainless steel shaft with metal-impregnated carbon plain bearings.

Operating Data
Min. fluid temperature Tmin -10 °C
Max. fluid temperature Tmax 110 °C
Min. ambient temperature Tmin -10 °C
Max. ambient temperature Tmax 40 °C
Maximum operating pressure PN 10 bar
Motor data
Emitted interference EN 61000-6-3
Interference resistance EN 61000-6-2
Mains connection 1~230 V, 50 Hz
Power consumption P1 max 63 W
Max. speed nmax 2750 1/min
Rated current IN 0.28 A
Protection class motor IP44
Threaded cable connection 1 x PG11
Materials
Pump housing Grey cast iron
Impeller PP
Shaft Stainless steel
Bearing Carbon, metal-impregnated
Installation dimensions
Pipe connection on the suction side DNs G 1½
Pipe connection on the discharge side DNd G 1½
Port-to-port length L0 180 mm
Ordering information
Brand Wilo
Product description Star-STG 25/6
Net weight, approx. m 2.6 kg
Article number 4050266
Documents

Installation and operating instructions

Wilo-Star ST 15/40

Article Number 2028694
Edition 2012-11
Number of pages 2
Language cs, da, en, et, fi, hr, hu, it, lt, lv, mk, nl, no, pt, ro, sk, sl, sr, sv, tr, uk
PDF (59 KB)

Wilo-Star STG

Article Number 4176741
Edition 0009
Number of pages 122
Language language neutral
PDF (3 MB)

Wilo-Star STG

Article Number 4176741
Edition 2012-11
Number of pages 29
Language en
PDF (1 MB)

Group Statement

Group Statement REACH

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

Pipe installation (3)

Pipe installation, adapter fitting (9)

Thermal insulation (1)

Pump control (1)

Timer switch SK 601N
Timer switch SK 601N
Switchgear SK 601N
    

Timer switchgear for wall fixation for the automatic, time-dependent activation/deactivation of Wilo single pumps with single-phase or three-phase motor.

Switching function

  • Automatic time-dependent activation/deactivation via 24-hour time switch at adjustable times (every ¼ hour)
  • Parallel control of several pumps up to max. switching capacity possible.

Time switch

Battery backup: 100 hours/rechargeable Ni-MH battery (button cell, type V80H).

Clock precision: ±1 s per day

Direct connection for single-phase current (1~) for pumps without thermal winding contacts (WSK).

For pumps for three-phase current (3~) or single-phase current (1~) with WSK, only together with SK 602N/ SK 622N or contactor.

Scope of delivery

  • Switchgear SK 601N
  • 2 threaded cable connections M16
  • Installation and operating instructions
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
System Optimisation
System Optimisation Glandless pumps
    
2219250

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 Glandless pumps
    
2219285

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

More suitable services

Extended Warranty
Extended Warranty Glandless pumps
    
2219589

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
Supervision
Supervision Glandless pumps
    
2219320

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
Installation
Installation Glandless pumps
    
2219355

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
Commissioning
Commissioning Glandless pumps
    
2219390

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 Glandless pumps
    
2219530

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 Glandless pumps
    
2219416

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 Glandless pumps
    
2219545

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.

Repair
Repair Glandless pumps
    
2219609

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