
Circulation unitsfor solar thermal systems, with solar regulator DeltaSol® C+28199268-269 seriesFunctionCirculation units are used on the primary circ
NOTICEThe following instructions must be read and understood before installing, commissioning andservicing the circulation unit.The safety symbol is u
3Technical specificationsMaterialsShut-off valvesBody: brass EN 12165 CW617NCheck valve: brass EN 12164 CW614NTemperature gauge: steel / aluminiumAir
4Characteristic components1) Grundfos Solar 15-65 circulation pump2)Safety valve with adjustable outlet type 253 series3) Fill/drain cock with control
5Installation• Fix the wall support bracket, using the fixing screws supplied in the pack (1).• Insert the rear insulation, through the notch provided
Commissioning• Close the flow meter fil/drain cock (1) and increase the system pressure up to the maximum design pressure, by means of the external fi
Shut-off and check valvesThe shut-off valves are equipped with a built-in check valve,positioned inside the ball.1. To allow the passage of
Application diagramsShut-off valvePumpAir ventExpansion vesselTemperature gaugeSafety relief valveAutomaticfilling202040608010012014016002040608010012
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