Information Menu; Boiler Shutdown; Restoring Central Heating System Pressure; System Draining - Immergas VICTRIX EXA 28 1 ERP Instruction And Recommendation Booklet

2.6 INFORMATION MENU.

By pressing the "Info" button (4), the "Informa-
tion menu" is activated, which allows to display
some boiler functioning parameters.
Press the "Info" button (4) to scroll the various
parameters.
To exit the menu, press the "Info" button (4) up
Id
Parameter
d1 Displays the flame signal (uA x 10 approximate)
d2 Displays the primary exchanger output instant heating flow temperature
d3 Displays the instant output temperature from the DHW exchanger
d4 Displays the values set for central heating set
d5 Displays the values set for DHW set
Displays the external temperature (if external probe present)
d6
If the temperature is below zero, the value is displayed flashing
d7 Display the temperature of the inlet DHW (with DHW inlet probe present)
d8 Return probe temperature
Displays the list of the last five anomalies
d9
(to scroll the list, turn the CH temperature selector (6))

2.7 BOILER SHUTDOWN

For complete boiler switch-off, press the "off "
button, disconnect the onmipolar switch outside
of the boiler and close the gas cock upstream
from the appliance. Never leave the boiler
switched on if left unused for prolonged periods.
2.8 RESTORING CENTRAL HEATING
SYSTEM PRESSURE.
Periodically check the system water pressure.
The boiler pressure gauge should read a pressure
between 1 and 1.2 bar.
If pressure falls below 1 bar (with the circuit cold),
restore normal pressure via the cock located at the
bottom of the boiler (Fig. 1-3).
N.B.: close the cock after the operation.
If pressure values reach around 3 bar the safety
valve may be activated.
In this case, remove water from an air vent valve
of a radiator until 1 bar is reached or ask for as-
sistance from an authorised company.
If frequent pressure drops should occur, ask an
authorised company for assistance to eliminate
the possible system leakage.
to the end of the list, or by pressing the "Reset"
button (3) or by waiting for 15 minutes.
With the menu active, the indicator (14) will
alternately show the indication of the parameter
via the letter "d" plus the number of the param-
eter that is being displayed and the value of the
parameter itself.
Description
2.9

SYSTEM DRAINING.

To drain the boiler, use the special system drain-
ing valve (Fig. 1-3).
Before draining, ensure that the system filling
cock is closed.

2.10 ANTI-FREEZE PROTECTION.

The boiler has an anti-freeze function that
switches on automatically when the temperature
falls below 4°C (standard protection to minimum
temperature of -5°C). All information relative to
the anti-freeze protection is stated in Par. 1.3. In
order to guarantee the integrity of the appliance
and the domestic hot water heating system in
zones where the temperature falls below zero,
we recommend the central heating system is
protected using anti-freeze liquid and installation
of the Immergas Anti-freeze Kit in the boiler. In
the case of prolonged inactivity (second case),
we also recommend that:
- disconnect the electric power supply;
- the central heating circuit and boiler domestic
hot water circuit must be drained. In systems
that are drained frequently, filling must be car-
ried out with suitably treated water to eliminate
hardness that can cause lime-scale.
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2.11 CASE CLEANING.

Use damp cloths and neutral detergent to clean
the boiler casing. Never use abrasive or powder
detergents.

2.12 DECOMMISSIONING.

In the event of permanent shutdown of the
boiler, contact an authorised company for the
suitable procedures and also ensure the electri-
cal, water and fuel supply lines are shut off and
disconnected.