The Wilo YONOS MAXO 50/0,5-12 heating circulator features an EC motor with automatic power adjustment and an integrated performance control system. The Δp-c and Δp-v control modes allow for constant or variable differential pressure, while the three speed settings operate at fixed speeds. The LED display shows the setpoint and fault messages.

The wet-rotor circulator can be connected with threaded fittings or a flange. Its housing is made of grey cast iron with a cataphoretic coating to protect against corrosion in the event of condensation. The impeller is made of PPS plastic reinforced with 40% glass fibre, the shaft is made of stainless steel, and the bearing is made of metal-impregnated sintered carbon. It is suitable for heating, ventilation and air-conditioning systems, industrial circulator systems, and closed cooling circuits.

• Application: Heating, ventilation, air conditioning, industrial circulator systems, and closed cooling circuits
• Maximum flow rate: 25 m³/h
• Maximum delivery head: 11 m
• Installation length: 280 mm
• Nominal flange diameter: DN 50
• Flange type: Combined PN 6/10, PN 16 according to EN 1092-2
• Control modes: Δp-c, Δp-v, and constant speed
• Speed control: Frequency converter
• Connection: Threaded or flanged
• Electrical connection: Wilo plug
• Supply voltage: 1~230 V
• Frequency: 50/60 Hz
• Rated motor power: 500 W
• Power consumption: 0 / 0 / 600 W at 1~230 V
• Current: 0.17–2.65 A at 1~230 V
• Rotational speed: 950–4400 rpm
• Energy Efficiency Index: EEI ≤ 0.23
• Protection rating: IP X4D
• Insulation class: F
• Motor protection: Integrated
• Cable gland: M20x1.5
• Electromagnetic compatibility: EN 61800-3
• Emission of interference: EN 61000-6-3
• Immunity to interference: EN 61000-6-2
• Fault indication: Indicator light and collective fault signal contact
• Weight: 14 kg