30
for the technician
First firing, regulation and servicing instructions
Draining EURA boiler
— To correctly drain both heating system and minitank in
the sanitary system, it is necessary to manually set three
way valve in middle position as described here below:
• three way valve (item 3) must initially be in ‘sanitary’
mode (manual control spindle in position ‘S’). If it is
in position ‘R’, open a domestic hot water tap to move
it to ‘S’;
• switch boiler off;
• manually push spindle towards middle position,
where it can be blocked pushing towards inside
(position ‘C’).
— Connect a rubber pipe to the draining tap [2] terminal;
— put the other end of the pipe in a suitable drain or sink;
— open draining tap 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 taps and air vents.
R
S
C
3
2
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