PAW SolexMaxi TW DN25

The compact and completely prefabricated solar transfer station for high-flow operation, fully insulated, with generously sized stainless steel plate heat exchanger, with pre-wired and pre-set controller, allows for easy and quick installation as well as safe commissioning. Primary connections: 1" internal thread, secondary connections: 1¼" external thread. All media-carrying parts made of brass or stainless steel, fully screwed - flat or self-sealing. Pre-mounted on steel wall bracket, quick and easy to mount on the wall. Ball valves or piston valves with full bore. Gravity brake in the return ball valve, adjustable, 200 mmWC, specially for solar systems, prevents unwanted circulation. Solar circuit with large ball valve handles, easy operation, closing position clearly defined, with integrated all-metal thermometer 0-160 °C, removable, with immersion sleeve integrated in the ball valve, piston valves in the secondary circuit. Airstop in the supply line for permanent degassing of the heat transfer medium Basic version with Grundfos solar circulation pump, Premium version with Wilo high-efficiency pump (PWM control for speed regulation), pre-assembled and pre-wired, adapted to the performance of the transfer station, pumps fully lockable, no drainage required for maintenance Premium version: electronic flow sensors for performance-dependent speed control of the secondary pump and heat quantity balancing (secondary), pressure sensors with evaluation unit for system monitoring Flushing and filling unit integrated Two KFE valves (on the safety group and on the angled fitting at the heat exchanger) allow filling and flushing of the primary circuit as well as the heat exchanger only, secondary side with air vent at the highest point of the heat exchanger Solar safety group Solar safety valve 6 bar, high-temperature manometer 0-6 bar with valve, flat-sealing connection for an expansion vessel, secondary side with 10 bar safety valve to compact, functionally optimised design insulation made of permanently elastic EPP, 100% insulation of the fittings - very good ventilation and cooling of the pumps, minimal heat loss.