ALPHA1 for maximum reliability at affordable cost
The ALPHA1 is a robust and high-efficiency canned rotor circulator pump from Grundfos. Perfect for new installations, the ALPHA1 is also the ideal choice for replacement of old, inefficient circulators in heating applications.
Built to provide maximum reliability throughout its long service life, the cost-effective ALPHA1 features integrated differential-pressure control and has durable ceramic bearings and shaft, as well as corrosion-resistant stainless-steel components.
How does night set-back work?
Night set-back is activated (if configured to do so) through the feed temperature of the heat generator.
If the feed temperature sinks by more than 10-15°C for over two hours and the temperature drop is at least 0.1°C per minute.
The pump switches back to normal mode immediately when the feed temperature increases again by 10°C.
Night set-back only functions if the pump is installed in the flow pipe of the heat generator.