Solar Panels Coupling Function; Chimney Sweep Function; Pump Anti-Block Function; Three-Way Anti-Block Function - Immergas VICTRIX 26 2 I Instruction Booklet And Warning

3.9 SOLAR PANELS COUPLING
FUNCTION.
The boiler is set-up to receive pre-heated water
from a system of solar panels up to a maximum
temperature of 65°C. In all cases, it is always
necessary to install a mixing valve on the
hydraulic circuit upstream from the boiler on
the cold water inlet.
Note: for good functioning of the boiler; the
temperature selected on the solar valve must
be 5 °C greater with respect to the temperature
selected on the boiler control panel.
In this condition, parameter P0 (DHW
thermostat) must be set at "1" and the parameter
P1 (solar delay time) at a temperature sufficient
to receive water from a storage tank situated
upstream from the boiler. The greater the
distance from the storage tank, the longer the
stand-by time to be set. When these regulations
have been performed, when the boiler inlet water
is at the same or greater temperature with respect
to that set by the DHW selector switch, the boiler
does not switch on.

3.10 "CHIMNEY SWEEP FUNCTION".

When activated, this function forces the boiler
to variable output for 15 minutes.
In this state all adjustments are excluded and only
the safety thermostat and the limit thermostat
remain active. To activate the chimney sweep
function, press the "Reset" button (3) until
activation of the function in the absence of
DHW requests.
Its activation is signalled by simultaneous
flashing of the indicators (11 and 12 Fig. 2-1).
This function allows the technician to check the
combustion parameters.
Once the function is activated, it is possible to
select whether to make the check in CH status
or DHW status by opening any hot water cock
and regulating the power by turning the "CH
regulation" selector (6).
Functioning in CH or DHW mode is visualised
by the relative symbols or
After the checks, deactivate the function
switching the boiler off and then on again.

3.11 PUMP ANTI-BLOCK FUNCTION.

The boiler has a function that starts the pump at
least once every 24 hours for the duration of 30
seconds in order to reduce the risk of the pump
becoming blocked due to prolonged inactivity.
3.12 THREE-WAY ANTI-BLOCK SYSTEM
Both in "domestic hot water" and in "domestic
hot water-central heating" phase the boiler is
equipped with a function that starts the three-
way motorised group 24 hours after it was last
in operation, running it for a full cycle so as to
reduce the risk of the three-way group becoming
blocked due to prolonged inactivity.
3.13 RADIATORS ANTI-FREEZE
FUNCTION.
If the system return water is below 4°C, the boiler
starts up until reaching 42°C.
3.14 P.C.B. PERIODICAL SELF-CHECK.
During functioning in heating mode or with
boiler in standby, the function activates every 18
hours after the last boiler check/power supply. In
case of functioning in domestic hot water mode
the self-check starts within 10 minutes after the
end of the withdrawing in progress, for duration
of approx. 10 seconds.
N.B.:during self-check, the boiler remains off.

3.15 AUTOMATIC VENT FUNCTION.

In the case of new heating systems and in
particular mode for floor systems, it is very
important that dearation is performed correctly.
The function consists in the cyclic activation of
the pump (100 s ON, 20 s OFF) and the 3-way
valve (120 s domestic hot water, 120 s central
heating).
The function is activated in two different ways:
- at every new power supply of the boiler;
- by pressing buttons at the same time (2 and 4
Fig. 2-1) for 5 seconds with boiler in stand-by.
N.B.: if the boiler is connected to the CAR
the "stand-by" function is only obtained via the
remote control panel.
In the first case, the function has duration of 8
minutes and it can be interrupted by pressing
the "reset" button (4). In the second case it has
duration of 18 hours and it can be interrupted by
simply switching the boiler on.
Activation of the function is signalled by the
countdown shown on the indicator (14).
3.16 SYSTEM SUPERVISION COUPLING
FUNCTION.
The boiler is set-up to be coupled to a system
functioning with heat pump. For coupling, a
"System supervisor" kit is necessary and the
following operations must be performed:
.
- set "S7" on "CE";
- connect the system supervisor to clamps 38
(-) and 39 (+) of the boiler terminal board
respecting the polarity.
For further information, see the system
supervisor instruction book.
3.17 YEARLY APPLIANCE CHECK AND
The following checks and maintenance should
be performed at least once a year.
- Clean the flue side of the heat exchanger.
- Clean the main burner.
- Check correct lighting and operation.
- Ensure correct calibration of the burner in
- Check correct operation of control and
- Check sealing efficiency of gas circuit and the
- Check intervention of the device against no gas
- Visually check for water leaks or oxidation
V2 ,
- Check, by means of the condensate drain cap,
- Check contents of the condensate drain trap.
- Visually check that the water safety drain valve
- Check that, after discharging system pressure
- Check that the system static pressure (with
- Check visually that the safety and control
- Check the condition and integrity of the
N.B.: on occasion of periodical maintenance of
the appliance it is appropriate also to check and
perform maintenance on the heating system, in
compliance with that indicated by the regulations
in force.
24 - IE
MAINTENANCE.
domestic water and heating phases.
adjustment devices and in particular:
- intervention of main electrical switch on
boiler;
- system control thermostat intervention;
- domestic hot water control thermostat
intervention.
internal system.
ionisation flame control:
- check that the relative intervention time is
less than 10 seconds.
from/on connections and traces of condensate
residues inside the sealed chamber.
that there are no residues of material blocking
the flow of condensate.
is not blocked.
and bringing it to zero (read on boiler
manometer), the expansion vessel charge is at
1.0 bar.
system cold and after refilling the system by
means of the filling valve) is between 1 and 1.2
bar.
devices have not been tampered with and/or
shorted, in particular:
- temperature safety thermostat;
electrical system and in particular:
- electrical power cables must be inside the
whipping;
- there must be no traces of blackening or
burning.