Grundfos ALPHA SOLAR circulator for a high-efficiency solar water system.
ALPHA SOLAR is a circulating pump designed for solar thermal systems. It has three constant curve modes, and it is also possible to control the speed using a low voltage PWM signal from a solar controller.
Grundfos ALPHA SOLAR offers very easy installation and low noise level. This highly efficient and reliable pump is designed to be maintenance-free with durable ceramic bearings and shaft, as well as corrosion-resistant stainless steel components.
Reliable and highly efficient
The PWM signal generates an analog signal using a digital source to control pump speed, performance and to optimize solar gain and ensure minimum energy consumption.
Easy access
A manual release screw is accessible from the front of the pump.
Remote troubleshooting
A dry running warning is available as a PWM feedback signal.
Easy handling
Very easy installation, low noise level and no maintenance.
Technical characteristics:
- Liquid temperature: +2º to +130ºC to 60ºC ambient temperature / +2º to +110ºC at 70ºC ambient temperature
- Ambient temperature: 0ºC to +70ºC
- Maximum relative air humidity: 95%
- System pressure: Maximum 1.0 MPa (10 bar)
- Minimum inlet pressure: 0.05 MPa (0.50 bar) at 95ºC liquid temperature.
- Protection class: IPX4D
- Insulation grade: F
- Sound pressure level: <43 dB(A)
- Supply voltage: 1x230 V +10%/-15%, 50Hz
- Motor protection: No external protection is required. engine.
- Power cable: 1m without plug
- Possibility of external monitoring: PWM Profile C
- Supply: Gaskets (without fittings) and 1m of PWM signal cable