for the technician
— open draining tap by turning its hexagonal nut anticlockwise;
— when water pressure is COMPLETELY drained, you can open radiators air vents, to allow air
inlet and complete plant draining;
— when everything is over, close the draining tap and ait vents.
Draining the tank
— Close the tap installed on the boiler cold water inlet;
— insert a rubber pipe on the tank outlet tap;
— connect the other side of the rubber pipe to a suitable outlet;
— open the tap turning in anticlockwise order the grained ring;
— when this operation is finished close the outlet tap turning the ring in clockwise order.
Check and replacement
of the magnesium anode
To protect the tank from the corrosion attacks it is necessary to check every 6 months the
magnesium anode and replace it if it’s damaged.
— Unload the tank completely (see previous paragraph);
— release the hexagonal head of the anode which is placed in the middle of the inferior flange of
the tank. Take it out, check it and if it is necessary replace it;
— install the anode, fill and put in pressure the tank (see paragraph “System Filling”) and verify the
lack of water losses.
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