Data sheet
| Hydraulic data | |
|---|---|
| Maximum operating pressure PN | 10 bar |
| Head max H max | 4.2 m |
| Flow max Q max | 2.9 m³/h |
| Minimum suction head at 50 °C m | 0.5 m |
| Minimum suction head at 95 °C m | 3 m |
| Minimum suction head at 110 °C | 10 m |
| Min. fluid temperature Tmin | -10 °C |
| Max. fluid temperature Tmax | 110 °C |
| Max. fluid temperature at max. ambient temperature of +25 °C Tmax | 110 °C |
| Max. fluid temperature at max. ambient temperature of +40 °C Tmax | 95 °C |
| Min. ambient temperature Tmin | -10 °C |
| Max. ambient temperature Tmax | 40 °C |
| Motor data | |
|---|---|
| Energy efficiency index (EEI) * | ≤ 0.18 |
| Mains connection | 1~230 V ±10%, 50/60 Hz |
| Rated power P2 | 15 W |
| Min. speed nmin | 700 1/min |
| Max. speed nmax | 3400 1/min |
| Power consumption P1 min | 3 W |
| Power consumption P1 max | 20 W |
| Emitted interference | EN 61000-6-3 |
| Interference resistance | EN 61000-6-2 |
| Electromagnetic compatibility | EN 61800-3 |
| Threaded cable connection | 1 x PG11 |
| Insulation class | F |
| Protection class | IPX4D |
* The benchmark for the most efficient circulators is EEI ≤ 0.20
| Materials | |
|---|---|
| Pump housing | Grey cast iron |
| Impeller | PP-GF40 |
| Shaft | Stainless steel |
| Bearing | Carbon, metal-impregnated |
| Installation dimensions | |
|---|---|
| Pump connection | G 1½ |
| Pump connection (alternative designation) | RP 1 DN 25 |
| Port-to-port length L0 | 180 mm |
Equipment/function
| Function | |
|---|---|
| Control mode | Δp-v for variable differential pressure Δp-c for constant differential pressure Dynamic Adapt plus Constant speed (n-const.) |
| Special features of the series | Night set back Mode for pressure-independent control valves (PICV) Key locking function Reset function for electricity meter Reset function to factory setting |
| Display | Setpoint Actual delivery head Actual volume flow Actual power consumption Energy consumption Actual speed Manually activated restart or pump venting function Warning messages in plain text (display status: yellow) Error messages in plain text (display: red) Control mode Active influences (e.g. STOP) |
| Pump venting function | Manual |
| Equipment | |
|---|---|
| Approvals and labels | CE VDE EAC UKCA TR RCM |
| Display | Graphic colour display (2 inches) |
| Display information | Comfort Version: LCD display (large) for showing the head, flow volume, actual und cumulated current. |
| Pump control | Electronic-controlled pump |
| Quick electrical connection | Wilo Connector |
| Thermal insulation shell | Yes |
| Blocking-current proof motor | yes |
| Particle filter | yes |
| Key lock | yes |
| Operating elements | Green button and back button |
| Smart Connect module BT | no |
| Connectivity | |
|---|---|
| Access via the Wilo-Assistant app | Via accessory Wilo-Smart Connect Module BT |
| Analogue signal as standard | 0-10 V (via BMS Connect module accessories) |
| Bus communication via additional accessories | Modbus RTU |
| Digital input | Ext. OFF/Ext. MIN/ Ext. MAX (via BMS Connect module accessories) |
| Digital output | SSM/SBM (via BMS Connect module accessories) |
| wire data exchange and remote operation | Via accessories Wilo-Smart Connect Module BT |
Pump curves
Dimensions and dimensions drawings
Stratos PICO 25/0,5-4
Wiring diagram
Blocking current-proof motor
Single-phase motor (EM) 2‐pole ‐ 1~230 V, 50 Hz
Ordering information
| Product data | |
|---|---|
| Brand | Wilo |
| Product description | Stratos PICO 25/0,5-4 |
| Article number | 4244393 |
| EAN number | 4062679126067 |
| Colour | Green |
| Minimum order quantity | 1 |
| Date of sales availability | 2022-01-01 |
| Previous model article number | 4216612 |
| Previous model designation | Stratos PICO 25/1-4 |
| Packaging | |
|---|---|
| Packaging type | Cardboard box |
| Packaging property | Sales packaging |
| Pieces per pallet | 146 |
| Number per layer | 20 |
| Dimension, weight | |
|---|---|
| Length with packaging | 194 mm |
| Length L | 180 mm |
| Height with packaging | 121 mm |
| Height H | 114 mm |
| Width with packaging | 213 mm |
| Width W | 165 mm |
| Gross weight, approx. m | 2.2 kg |
| Net weight, approx. m | 1.9 kg |
Wilo-Stratos PICO high-efficiency pump, electronically controlled
Glandless circulation pump with screwed connection, locked-rotor-resistant synchronous motor according to ECM technology and built-in electronic power control for variable differential pressure control.
Can be used for all heating and air-conditioning applications (-10 °C to +110 °C).
Control mode can be selected in accordance with the radiator/underfloor heating application.
Control modes:
- Permanent, automatic power adjustment to system requirements without setpoint specification Wilo Dynamic Adapt plus (factory setting)
- Setting assistant for number of radiators or underfloor heating area
- Variable differential pressure (Δp-v)
- Constant differential pressure (Δp-c)
- Constant speed (n-const.)
Functions:
- Automatic night setback
- Fault/warning message display including description and error code in plain text
- Venting routine for automatic venting of the rotor chamber
- Manual restart function for additional deblocking of the pump as required
- Key lock
- Function for resetting the electricity meter or for resetting the settings to the factory settings
- Dry-running detection
- Automatic deblocking function and integrated motor protection
- Supports hydronic balancing with the Wilo-Assistant app
Display:
- Control mode
- Setpoint
- Volume flow
- Delivery head
- Speed
- Power consumption
- Electrical energy consumption
- Active influences (e.g. night setback, venting)
Version:
- Colour graphic display with operation via one button manual operation level
- Slot for Wilo communication modules as an interface for e.g. Bluetooth
- Use the Wilo-Assistant app to read and set operating data and –among other things– set up a commissioning protocol through the Bluetooth interface (as an accessory)
- Minimal consumption only 3 W
- Equipped as standard with a thermal insulation shell
- 5-year warranty
Optional accessories:
- Wilo-Smart Connect module BT for Bluetooth connection to mobile devices via Wilo-Assistant app
- The Wilo-Connect module BMS expands the interface for use in building management systems (BMS)
- Wilo-Connect module RS485 expands the interface for use in building management systems
| 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 |
| Minimum suction head at 50 °C m | 0.5 m |
| Minimum suction head at 95 °C m | 3 m |
| Minimum suction head at 110 °C | 10 m |
| Motor data | |
|---|---|
| Energy efficiency index (EEI) * | ≤ 0.18 |
| Mains connection | 1~230 V ±10%, 50/60 Hz |
| Rated power P2 | 15 W |
| Min. speed nmin | 700 1/min |
| Max. speed nmax | 3400 1/min |
| Power consumption P1 min | 3 W |
| Power consumption P1 max | 20 W |
| Emitted interference | EN 61000-6-3 |
| Interference resistance | EN 61000-6-2 |
| Electromagnetic compatibility | EN 61800-3 |
| Insulation class | F |
| Protection class | IPX4D |
| Threaded cable connection | 1 x PG11 |
* The benchmark for the most efficient circulators is EEI ≤ 0.20
| Materials | |
|---|---|
| Pump housing | Grey cast iron |
| Impeller | PP-GF40 |
| Shaft | Stainless steel |
| Bearing | Carbon, metal-impregnated |
| Installation dimensions | |
|---|---|
| Pump connection | G 1½ |
| Pump connection (alternative designation) | RP 1 DN 25 |
| Port-to-port length L0 | 180 mm |
| Ordering information | |
|---|---|
| Brand | Wilo |
| Product description | Stratos PICO 25/0,5-4 |
| Net weight, approx. m | 1.9 kg |
| Article number | 4244393 |
Filtered by
Document type
Language
Datasheet and documentation
Installation and operating instructions
Wilo-Stratos PICO - Quick Guide
| Article Number | 4249412 |
| Issue date | 2021-11 |
| Edition | 01 |
| Language | bg, cs, da, de, el, en, es, et, fi, fr, hr, hu, it, lt, lv, nl, no, pl, pt, ro, ru, sk, sl, sr, sv, tr, uk |
Wilo-Stratos PICO
| Article Number | 4249388 |
| Issue date | 2021-12 |
| Edition | 01 |
| Language | en |
Group Statement
Group Statement REACH
| Issue date | 2021-05 |
| References | REACH |
| Certification and inspection body | Self Declaration |
| Issue date | 2026-04-17 |
| Language | language neutral |
UKCA
UKCA 2215814-04
| References | 2215814-04 |
| Certification and inspection body | Self Declaration |
| Issue date | 2025-09-18 |
| Language | language neutral |
UKCA 2215963-04
| References | 2215963-04 |
| Certification and inspection body | Self Declaration |
| Issue date | 2025-03-12 |
| Language | language neutral |
Mechanical accessories
Pipe installation (3) | |||
Screwed connections/adapters | |||
Screwed connection Rp 1 x G 1½, 72 Set | 112047298 | ||
Screwed connection Rp 1 x G 1½, 1 Set | 4092741 | ||
Adapter G 1½/G 2 | 4105914 | ||
Pipe installation, adapter fitting (9) | |||
Threaded adapter R | |||
Threaded adapter R 2, GG | 110626790 | ||
Threaded adapter R 6, GG | 110678493 | ||
Threaded adapter R 1, GG | 110786891 | ||
Threaded adapter R 7, GG | 110787094 | ||
Threaded adapter R 24, GG | 110880596 | ||
Flanged rings RF | |||
Flanged ring RF 7, PN6 | 110628790 | ||
Flanged ring RF 9, PN6 | 110679395 | ||
Flanged ring RF 13, PN6 | 110679498 | ||
Flanged ring RF 10, PN6 | 110851499 | ||
Thermal insulation (1) | |||
Thermal insulation shell | |||
Thermal insulation shell | 4206066 | ||
Electrical accessories
Pump control (1) | |||
Timer switch SK 601N | |||
Switchgear SK 601N | 2120443 | ||
Pump control/interface module (3) | |||
Wilo-Smart Connect module BT | |||
Wilo-Smart Connect module BT | 4239241 | ||
Connect module | |||
Wilo-Connect module BMS | 4257834 | ||
Wilo-Connect module RS485 | 4268524 | ||
Plug (2) | |||
Angle plug | |||
Angle plug | 4150229 | ||
Connector | |||
Wilo-Connector | 4200870 | ||
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 moreExtended Warranty | |||
Extended Warranty Glandless pumps | 2219589 | ||
Supervision | |||
Supervision Glandless pumps | 2219320 | ||
Installation | |||
Installation Glandless pumps | 2219355 | ||
Commissioning | |||
Commissioning Glandless pumps | 2219390 | ||
Maintenance | |||
Maintenance BASIC Glandless pumps | 2219530 | ||
Maintenance COMFORT Glandless pumps | 2219416 | ||
Maintenance PREMIUM Glandless pumps | 2219545 | ||
System Optimisation | |||
System Optimisation Glandless pumps | 2219250 | ||
Energy Solutions | |||
Energy Solutions Glandless pumps | 2219285 | ||
Repairs | |||
Repair Glandless pumps | 2219609 | ||
