30
8.14
Refilling or emptying
Before carrying out the operations described below, make sure
that the main system switch is set to "ON" in order for the dis-
play to show the pressure level in the system during refilling.
Make sure that the operating mode is set to "Stand-by";
if this is not
the case, press the button
y
for at least 1 second until this
mode has been selected.
ON
Fig. 37
8.14.1 REFILL operations
Remove the front panel:
– disassemble the smoke outlet duct of the
Brava Slim HE 20 R e
and
Brava Slim HE 40 R e
, if fitted
– remove the two screws (1), pull the front panel (2) forwards
and release it from the top by lifting it.
2
1
Fig. 38
Heating circuit:
– open the isolation and air bleeding valves in the highest points
of the system
– loosen the automatic bleed valve (3)
– open the isolation valves of the heating circuit (if present)
– Open the filling valve, which should be on the system return
– Fill until the water overflows from the air bleeding valves and
shut off the valves again
– Continue filling until the pressure reaches
1-1.2
bar (100-120
kPa) as shown on the display
– close the filling valve
– check that there is no air in the system by bleeding all the
radiators and the circuit on the high points of the system
– remove the front plug (6) of the pump and use a screwdriver to
check that the impeller is not blocked
– replace the plug (6)
6
3
Fig. 39
NOTE:
to completely remove all air from the system, it is recom-
mended that this operation is repeated a number of times.
– check the pressure on the display and if necessary top up until
the correct pressure reading appears
– close the automatic bleed valve (3)
– fill the siphon disconnecting it from the pipe or using (by
means of) the smoke take-off point.
Refit the front panel of the boiler hooking it on at the top, push-
ing it forwards and securing it with the screw (1) which was re-
moved previously.
Fit the smoke outlet duct of the
Brava Slim HE 20 R e
and
Brava
Slim HE 40 R e
.
8.14.2 EMPTYING operations
Boiler:
– loosen the automatic bleed valve (3)
– close the heating circuit isolation valves
– check that the filling valve is closed
– connect a rubber hose to the boiler drain valve (7) and open it
– when it has fully emptied, close the drain valve (7)
– close the automatic bleed valve (3).
3
7
Fig. 40
Summary of Contents for 8112265
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Page 43: ...43 Brava Slim HE 20 R e Brava Slim HE 40 R e ...
Page 44: ...44 Brava Slim HE 20 R i Brava Slim HE 20 R e Brava Slim HE 40 R i Brava Slim HE 40 R e ...
Page 45: ...45 Brava Slim HE 20 R i Brava Slim HE 20 R e Brava Slim HE 40 R i Brava Slim HE 40 R e ...
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