72
EN
1.6.3
System low pressure (replenishment)
Sime
ESTELLE HE B4 INOX ErP
boilers are NOT equipped with a
system filling device. The system must be fitted with a pressure
gauge (A), to check that the (cold) water pressure is between
1
and 1.2 bar (98–117.6 kPa)
and a loading/filling valve (B).
When the system water pressure indicated on the pressure
gauge (A) falls below
1 bar (98 kPa)
, the unit must be filled.
To do this:
– open the filling valve (B) to raise the pressure until it reaches
the correct value, between
1 and 1.2 bar (98–117.6 kPa)
– close the valve (B)
0
4
1
3
2
bar
A
B
Fig. 10
1.6.4
Faulty calorifier pump
LED (D)
: The LED will signal the pump status on the basis of its
colour when lit, as shown below.
–
Lit green
: normal operation
–
Off
: request professionally qualified personnel to intervene
–
Flashing red/green
: request professionally qualified personnel
to intervene
–
Flashing red
: request professionally qualified personnel to in-
tervene
–
Lit red
: press the (E) button for 5 seconds to activate the man-
ual reset. If the pump fails to start, request the intervention of
professionally qualified personnel.
D
E
Fig. 11
NOTE:
For the “Possible faults and solutions” refer to the specif-
ic paragraph at the end of the manual.
2
SHUTDOWN
2.1
Temporary shutdown
If the user is away temporarily, for a weekend, short trip etc and
if the outside temperature is at ZERO:
– press the main switch (8) to switch off the boiler
8
1
0
Fig. 12
– close the fuel and water circuit shut-off valves.
Fig. 13
2.2
Shutting down for long periods
If the boiler is to be left unused for a long period, the following
operations need to be carried out:
– press the main switch (8) to switch off the boiler
– close the fuel and water circuit shut-off valves
– set the main system switch to "OFF"
OFF
Fig. 14
m
CAUTION
In case of difficulties in completing the described pro-
cedure, contact professionally qualified personnel.
