Complete, pre-assembled and tightness-tested pump assembly with all required functional components, including shut-off ball valve DN 20. The required flow temperature is set within a range from 35 to 60 °C at the thermostatic mixing valve mixing valve ATM 563. A cover that can be lead-sealed protects the control knob against improper adjustments during operation. The selected adjustment is visible through the window in the cap. The special chamber geometry also helps to avoid damage caused by overpressure during closing (backflow preventer to return).
The circulation pump automatically switches off if a safety-related temperature limitation is exceeded. It is adjustable between 20 to 60 °C; the factory setting is 55 °C. This helps to prevent damage to the underfloor heating system. The pump features the following operating modes:
Constant volume flow
Venting function of pump housing
In venting mode, the entire surface heating/cooling system can be conveniently vented by means of the valve integrated in the pump assembly and the enclosed vent hose.