Sime 8103296, User, Installation And Servicing Instructions

Page: 56 / 100

56
EN
1.6.3 System low pressure (replenishment)
Check on the pressure gauge (A) that the pressure of the sys-
tem, when cold, falls between
1 and 1.2 bar (98–117.6 kPa)
. If
the pressure is lower than the above value, the water pressure
switch will stop the burner’s operation (orange signalling LED
(1) lit). To replenish the system:
– open the filling valve (B) to raise the pressure (turn it an-
ti-clockwise)
– close the valve once the above value has been reached (B)
– if the pressure exceeds the maximum value indicated, open
the relief valve of any radiator (some water will come out) un-
til the correct value is reached.
0 4
1 3
2
bar
A
1
B
Fig. 10
1.6.4 Faulty 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 thermal unit
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 thermal unit is not used for an extended period of time, the
following operations must to be carried out:
– press the main switch (8) to switch off the thermal unit
– 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.