Immergas 3.025499, Instruction And Recomendation Booklet

Page: 26 / 68

26
INS
TALLER
US
ER
MAINTEN
AN
CE TECHNI
CI
AN
2.5 DESCRIPTION OF FUNCTIONING
STATES
Below find a list of boiler functioning states that
appear on the multifunction display (24) by
means of the indicator (6) with a brief descrip-
tion. Refer to the instruction book for a complete
explanation.
Display (6) Description of functioning states
SUMMER
Summer functioning mode without request in progress.
Boiler in stand-by for domestic hot water request.
WINTER
Winter functioning mode without request in progress.
Boiler in stand-by for domestic hot water or central heating request.
CHILLER
Cooling operating mode without requests in progress.
Boiler awaiting domestic hot water request and heat pump awaiting room cooling.
DHW ON
Domestic hot water mode in progress.
Boiler functioning, domestic hot water heating in progress.
CH ON
Central heating mode in progress.
Boiler or heat pump in operation, room heating is in progress.
COOLING
Cooling mode in progress.
Heat pump in operation, room cooling is in progress.
CAR OFF
Remote command disconnected, the boiler is still powered but is not able to satisfy any requests.
F4
Postventilation in progress.
Fan in function after a request for domestic hot water or central heating in order to evacuate residual flue gas.
F5
Postcirculation in progress.
Pump in function after a request for domestic hot water or central heating in order to cool the primary circuit.
P33
With the Remote Control absent, the boiler only operates for the production of domestic hot water. (Can be activated through the
“M3” menu. It allows to activate the central heating even if the Remote Control is out of order).
STOP
Reset attempts finished
Wait for 1 hour to re-acquire 1 attempt.
(Error code 08).
ERR xx
Anomaly present in boiler with relative error code.
The boiler does not work. (see troubleshooting paragraph).
F8
Boiler air bleeding.
During this stage, which lasts 18 hours, the boiler circulator pump is started at pre-set intervals, thus allowing air bleeding of the
heating system.
SOLAR
Solar function.
The solar function is activated to control just the pump for DHW.
When the solar pump is powered, the display will show SOLAR’, which may alternate with other function texts in progress.
SOLAR ON The solar pump functions permanently.
SOLAR OFF The solar pump stays off.
2.6 USING THE BOILER.
The electronics integrated in the boiler, depend-
ing on the climatic conditions and on the settings,
establishes which system to use to satisfy the
system requests, choosing the most convenient
and suitable system from time to time among
the boiler, the thermal solar system and the heat
pump, or using them simultaneously to achieve
the best possible comfort.
Attention: the boiler only works properly if it is
connected to the remote zone control and com-
bined with the Immergas heat pump supplied
separately.
Consequently all controls and adjustments are
requested to the remote zone control; in any case
on the boiler the Reset button “C”, the menu access
button “D” and the domestic hot water Comfort
button “B” remain in operation.
Before ignition make sure the central heating sys-
tem is filled with water and that the manometer
(23) indicates a pressure of 1 - 1.2 bar;
Open the gas valve upstream of the boiler; it is
then possible to switch the boiler on.
When the boiler is switched off the boiler display
reads “CAR OFF” by pressing and holding the
button ( ) on the remote zone control the
boiler switches on.
Connection to the remote zone control is
detected automatically and the boiler display
indicates the symbol (
).
Once the boiler is switched on all the adjust-
ments, any anomaly reports and operating
modes are shown on the display of the remote
zone control. In any case the boiler display still
maintains all system operation statuses.
For example, in the event the domestic hot wa-
ter heating request is satisfied by the boiler, the
operating status is displayed as shown below:
Summer mode operation with domestic hot
water heating
2-3
• “COMFORT” or “SAVING” DHW function.
By pressing button "B" on the display the ( )
symbol appears and the “COMFORT” function
is activated, which allows to have the maximum
amount of hot water available set according to
user requirements.
By pressing button “B” again one switches to
“SAVING” mode, signalled by the indicator (15
) switched off and the energy saving mode is
activated, in this case it is still possible to have
domestic hot water but it is not guaranteed that
the temperature set by the user will be reached.
• Stand-by ( ) : Attention: with the boiler in
stand-by mode (operation performed from the
boiler control panel) it is possible to produce
hot water only via the heat pump; in addition,
solar circuit operation is also disabled and the
safety functions are not ensured, such as: pump
anti-lock, antifreeze and three-way anti-lock
(error 36 appears on the remote zone control).
To reactivate boiler operation one must press
the boiler Stand-by button ( ).
• CAR Off: with the remote zone control off, the
boiler display indicates the “CAR OFF” operat-
ing status, the boiler safety functions remain in
any case active.