meibes XL Documentation Technique Pour Le Montage Et La Mise En Service page 14

2. Technical data
Hydraulics diagram
Legend:
Ball valve
Flushing, filling and draining ball valve
Pump
Ventilation
Backflow preventer
Volumetric flow limiter with restriction valve
Plate heat exchanger
Connection R1/2" internal thread (e.g. for temperature sensor)
Connection R3/4" external thread (e.g. for expansion tank)
Safety valve
Return flow to secondary circuit (e.g. buffer accumulator)
Flow to secondary circuit (e.g. buffer accumulator)
Return flow to primary circuit (solar collectors)
Flow from primary circuit (solar collectors)
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