23
INS
TALLER
US
ER
MAINTEN
AN
CE TECHNI
CI
AN
- remove the cap that closes the service passage
(located on the bracket
Fig. 35
) and make it
pass through the hole of the silicone pipe of
the pressure gauge;
- loosen the pressure point screw downstream of
the gas valve by approximately two turns
(Fig.
35)
and connect a pressure gauge;
- close the casing properly;
- set the system’s electrical switch to on and open
the hot water cock.
Access the
Parameters menu
( ), as follows:
- with the water heater on, press the reset button
( ) for approximately 10 seconds. The sym-
bols on the display will start flashing and first
( ) will be displayed, followed by ( );
- release the reset button;
- enter the code ( ) by turning the knob and
confirm by pressing reset;
- turn the knob to select ( ) (Parameters menu)
and confirm by pressing reset;
- on accessing the Menu, scroll through the list
with the knob until finding parameter 17 (com-
plete or partial calibration), and press reset: the
value that can be reset will flash and it will be
possible to select value 5 by turning the knob:
- save by pressing the reset button.
Attention:
in case of a power failure the procedure
must be repeated.
Access the
Calibration menu
( ) as follows:
- press the reset button ( ) until the flashing
MENU
and ( ) appear on the display;
- turn the knob to select ( ) (Calibration menu)
and confirm by pressing reset;
- the display will show
AUTO
;
- open the hot water cock;
- the display will show (
) to indicate that
the device operates fully;
- Turn the knob until the burner’s maximum
pressure value is displayed on the pressure
gauge
(Ref. Parag. 3.10)
;
- to save the value, press the reset button;
- press the reset button to select the next value
regarding minimum calibration (
);
- Turn the knob until the burner’s minimum
pressure value is displayed on the pressure
gauge
(Ref. Parag. 3.10)
;
- press the reset key;
- Press the reset button ( ) until
MENU
flashes
on the display, then release the button, the
screen displays ( );
- press the reset button again until the wording
MENU
flashes, then release the button: the
screen displays the value of the set temperature;
- close the hot water cock.
Attention:
the menu is exited automatically after
15 minutes of inactivity, or by pressing the reset
button for a while.
Attention:
in case of a power failure the procedure
must be repeated.
Attention:
write on the adhesive plate provided
the type of gas in which it was transformed, the
date when the transformation was carried out,
the name and signature of the operator who made
the transformation and then stick it close to the
existing plate.
3.6 SOLAR PANELS COUPLING
FUNCTION.
All Immergas models are supplied as standard
with the NTC probe applied to the DHW cold
water inlet pipe. The probe can be activated by
setting the parameter “P28”.
When parameter "P28" is equal to zero the
probe is disabled; when instead the parameter
is assigned a value between 1 and 20, the probe
is enabled and the function is activated with a
delay that can be set between 1 and 20 seconds.
The water heater is set up to receive pre-heated
water from a system of solar panels up to a max-
imum temperature of 65°C.
Attention:
the manufacturer denies any liabil-
ity for damage to persons or things caused by
exceeding this temperature.
In any case, it is always necessary to install a mix-
ing valve on the hydraulic circuit upstream of the
boiler, on the cold water inlet. Set the temperature
on the mixing valve increased by 5°C with respect
to that set on the water heater, so as to ensure that
the temperature at the water heater inlet does not
exceed the maximum value indicated.
If the temperature detected on the inlet probe
is lower than that set by the user with the knob,
the water heater switches on and goes into mod-
ulation until the desired temperature is reached.
On the other hand, if the temperature detected
on the inlet probe is close to or equal to that set
by the user, the water heater does not switch on.
