The Grundfos UPM3 Solar 15-105 130 circulation pump with a wet rotor, produced in France, was specifically designed for use in solar power stations (circulation groups) of solar thermal systems. It is intended for surface mounting and can operate in both vertical and horizontal positions. The application area of this circulation device is the pumping of heat transfer fluid with a high glycol content in the primary circuits of solar thermal systems, which provide independent hot water supply and heating in dual-circuit water heating complexes. It delivers a liquid pressure of up to 10.5 m with a total flow rate of up to 3.0 m3/h. The working temperature of the heat transfer fluid is +110°C, while the maximum should not exceed +130°C.
The device is characterized by high efficiency and economical energy use thanks to its electric motor with PWM control (pulse-width modulation of current, profile C). At the same time, the electric motor can also operate in a constant curve mode, allowing for the selection of the most suitable method for adjusting the device’s operating parameters in each specific case. The supply package includes power cables and PWM control.
Key specifications of the Grundfos UPM3 Solar 15-105 130:
Mounting size, mm 130
Speed regulation steps 3
Head generated, m 10.5
Flow rate, m3 3
Power supply parameters 220V 50Hz
Power, W 2-52
Electrical protection class IP44
Total weight, kg 2.3