Circulation pump for heating Atmos Pico - 2500 l / hour, 4 m

Highly efficient, electronically adjustable pump WILO Atmos Pico 25/1-4. The circulation pump has a wet rotor with threaded connection, which does not require special maintenance, with a blockable synchronous motor using ECM technology and built-in electronic power control for stepless differential pressure control. Can be used in all heating and air conditioning systems. The model has a choice of adjustment mode according to the application - for radiators or underfloor heating.

The Atmos Pico 25/1-4 model is equipped as standard with:

• Pre-selection of control modes for optimal load adaptation: Δp-v (variable differential pressure)
• 3 constant speed steps (n = constant value)
• Built-in motor protection
• One LED to indicate a signal of operation or failure
• Minimum consumption only 4W
• Automatic release function
• High starting moment

The pump housing is made of gray cast iron, the impeller is made of polypropylene, the stainless steel shaft with sliding graphite bearings impregnated with
metal.

• Maximum flow rate: 2.5 cubic meters.

Eligible areas of application:

• Temperature range at max. ambient temperature +25 °C: -10...+110 °C
• Temperature range at max. ambient temperature +40 °C: +15...+95 °C
• Maximum permissible operating pressure: 6 bar

Pipe connections:

• Pipe fitting: Rp 1
• Mounting length L0: 180mm

Motor/electronics:

• Energy Efficiency Index (IEE): ≤ 0. 23
• Electromagnetic compatibility: EN 61800-3
• Emission of electromagnetic interference: EN 61000-6-3
• Resistance to electromagnetic interference: EN 61000-6-2
• Speed control: Frequency converter
• Degree of protection: IP X2D
• Insulation class: F
• El.power supply: 1 ~ 230 V, 50/60 Hz
• Speed N: 800 - 3600 rpm.
• Nominal value of the motor P2: 15W
• Power consumption 1 ~ 230 V P1: 0/0/0 W
• Maximum current I: 0.26A
• Motor protection: Not required (resistant to blocking)
• Cable Terminal Connector: 11 Pg

Minimum height of the suction inlet to prevent cavitation at the temperature of the pumped water:

• Minimum inlet height at 50°C: 0.4999974 M
• Minimum inlet height at 95°C: 2.99995 M
• Minimum inlet height at 110°C: 10 M
• Minimum inlet height at 130°CH: 0 M