Sime ALU HE, User, Installation And Servicing Instructions

Page: 55 / 100

55
EN
1.2 Start-up
1.2.1 Preliminary checks
Commissioning of the
ALU HE
boiler must be carried out by
professionally qualified personnel after which the boiler can
operate automatically. It may, however, be necessary for the
system manager to start the appliance autonomously after
having turned it off, without involving a technician: for example,
after a holiday.
In such cases it must first be checked that the fuel and water
system isolation valves are open.
1.2.2 Ignition
After having carried out the preliminary checks, perform the
following to start the boiler:
– set the main system switch to "ON"
– the blue bar (4) comes on and the screen saved by the
electronic circuit board before the appliance was turned off is
shown on the display.
Example: winter; delivery temperature (40°C); system pressure
(1.3 bar).
ON
Fig. 2
When heat is requested from the systems the boiler automatically
carries out:
– the operational checks
– ignition and starts automatic operation.
m
CAUTION
– When the display is not backlit (off), the first press
on each function button serves to backlight it (turn
it on).
– To manually stop the boiler press button T .
– The display will show the following screen.
1.3 Adjusting the delivery temperature
The control panel on
ALU HE
boilers lets you manually adjust the
delivery temperature on two temperature levels by choosing the
best ones for the systems managed (e.g. 80°C and 50°C).
To adjust the delivery temperature on the first of the two levels:
– press button X (twice if the display isn't backlit). The symbol
u will be shown on the display
– press buttons J or Q until the desired value is displayed
(e.g. 80°C)
– press button X again. The symbol x will be shown on the
display
– press buttons J or Q until the desired value is displayed
(e.g. 50°C)
Once the settings are completed, to go back to the starting
screen press button X or wait for approx. 60 seconds without
touching any buttons.
1.4 Malfunctions
In the event of a fault/malfunction the message
"ALL"
will
appear on the display with the alarm number and the light bar
(4) will turn red.
Example: “ALL 02” (Low System Pressure Error: less than 0.8
bar).
NOTE:
in the case of "ALL 02", the system can be reintegrated,
when cold, without disconnecting the power supply to be able
to see when the pressure reaches the correct value (1-1.5 bar).
The warning disappears when normal conditions are reset and
the boiler starts up again automatically.