OEM Solar thermal
Solar collectors convert sunlight into heat that can be used for heating or to supply domestic hot water to buildings. In pressurised thermal solar systems, pumps must stand in glycol-based solar liquids with a high temperature range.
Solar collectors for heating hot water
Solar collectors convert sunlight into heat that can be used to supply heating or domestic hot water to buildings. The primary circuit is only used if there is a positive temperature difference between the collector and the heat exchanger or tank. In pressurised thermal solar systems, pumps must withstand glycol-based solar liquids with a high temperature range from +2°C to 110°C and short peaks of up to 130°C.
The right portfolio for any need
When the system starts up, the liquid temperature can occasionally cause condensation in the pump. The UPM3 SOLAR features a drain hole to compensate for this which must point downwards. The required flow and head can vary depending on the sizing of the system components. In a drain-back system, the pump must be able to fill the system each time it starts. This means the head must be as high as the geodetic height of the system top.
Excellent energy efficiency
UPM3 SOLAR is designed to be integrated into all kinds of thermal solar systems with either variable (matched-flow) or constant flow. In high-efficiency ECM pumps such as UPM3, the speed can be controlled by a low-voltage PWM C signal from a solar controller. This will optimise the solar harvesting and the temperature of the system. One of the benefits of these systems is that power consumption will be considerable reduced. If no PWM signal is available, UPM3 SOLAR can be set to constant speed, and only switched on and off by the controller.