Circulation Pump WILO Yonos PICO plus 25/1-6PG1, single-head for central heating

WILO Yonos PICO plus 25/1-6PG1 is a compact single-head circulation pump engineered for central heating systems. Designed to maintain hot-water flow and appropriate system pressure, this circulator supports continuous operation in domestic and light commercial radiator circuits as well as underfloor heating installations. The unit is suitable for replacement and retrofit projects where a reliable, space-saving pump is required to ensure even heat distribution and efficient hydraulic performance.

Advantages

The pump combines a compact form factor with low energy consumption and quiet operation, enabling straightforward installation in tight plantrooms or boiler cabinets. Its motor and hydraulic design deliver stable flow control across typical heating system load ranges, while corrosion-resistant wet rotor components increase service life. Built for continuous duty, the circulator reduces the need for frequent maintenance and helps maintain consistent indoor comfort by preventing cold spots in heating circuits.

Suitable for

• Domestic radiator heating systems
• Underfloor heating circuits
• Replacement of existing single-head circulators
• Small commercial heating installations

Key specifications

• Pump type: single-head circulation pump for central heating
• Connection orientation: in-line design for direct integration into heating circuits
• Hydraulic range: suitable for typical low- to medium-head heating applications
• Operation: continuous-duty capable for constant circulation
• Nozzle and wet rotor materials: corrosion-resistant construction for extended service life
• Noise level: engineered for quiet operation in residential environments
• Installation: compact footprint for tight spaces and retrofit situations

How to use

Install the circulation pump in the heating circuit following local regulations and the system manufacturer's recommendations. Ensure shut-off valves and union connections are in place for safe isolation during maintenance. Before first use, fill and vent the system to remove trapped air and verify correct flow direction according to the pump housing arrow. Configure system controls and any speed settings to match the hydraulic requirements of the installation, then monitor the pump during initial operation to confirm stable flow and absence of leaks.

Usage recommendations

For optimal performance, use the pump in closed central heating circuits with properly sized piping and balancing valves. Perform routine visual inspections and periodic venting to prevent air locks. When replacing an existing pump, compare hydraulic characteristics to ensure compatibility with the system. If accessible, install isolation valves to simplify future service and minimize system downtime.