Circulation pump Grundfos Alpha Solar 25-75 180
ALPHA SOLAR is a circulator pump designed for thermal solar systems. It features three constant-curves modes, and the speed can also be controlled by a low-voltage PWM signal from a solar controller.
High-efficiency canned-rotor circulator pump designed for all kinds of thermal solar systems. The compact design fits into most installations.
Speed can be controlled by a low-voltage PWM (pulse width modulation) signal from a solar controller to optimise the solar harvesting and temperature of the system.
If no PWM signal is available, the pump can be set to operate in constant-curve control mode with three different settings available. Control modes and settings can easily be selected on the operating panel.
The pump is of the canned-rotor type, which means that the pump and motor form an integral unit. The bearings are lubricated by the pumped liquid ensuring maintenance-free operation.
The pump has a deblocking device accessible from the front of the pump.
The pump housing is available in both cast-iron and stainless-steel versions. Cast-iron pump housing is electrocoated to improve corrosion resistance. Stainless-steel pump housing is ideal for applications where corrosion must be avoided, for example in domestic hot-water applications.