COSMOGAS NOVADENS 24, User Manual

6

3 - USE

Figura 2 - Parameters displayed during functioning

PARAMETER    DESCRIPTION

ON DISPLAY “2” (figure 1)

Boiler on stand-by  or on hold (no heating or hot water request
exists)

Anti-freeze function active

Caution!!!  Domestic hot water active for more than 120 minutes
(turn domestic hot water to OFF position in order to reinstate
heating). Check that there are no leaking taps. If the problem
persists, contact a professionally qualified technician

Caution!!! System pressure too low, fill system follow section
3.2.

Domestic hot water service on

Heating service on

Boiler in lock-out mode. To reset it, press the 

 button

. If

the lock-out occurs frequently, contact a professionally qualified
technician.

Boiler fault. Contact a professionally qualified technician

Auto-purging procedure in progress . It will end within 2 minutes

Boiler temperature (°C)

Boiler temperature (°C)

Boiler temperature (°C)

No display

Domestic hot water temperature (°C)

Heating temperature (°C)

Lock-out code (see installation and
maintenance manual)

Error code (see installation and maintenance
manual)

Boiler temperature (°C)

POSSIBLE DISPLAYS

3.4 - Displays

During normal operations, the param-
eters’ display  “1” and the values’
display “2” (see figure 1) remain perma-
nently on  (if the ”Energy Saving” mode

has not be activated).
The parameters which can be displayed
are shown with their meaning in the
table shown in figure 2.

3.5 - Start-up
procedure

l

Open the gas cock;

l

switch on electric power to the boiler;

l

If the display shows code 

 21, it

means that the polarity has not been
observed between phase and neutral;

l

on initial start-up, the appliance carries
out an auto-purging cycle lasting two
minutes. This is indicated by the

appearance of 

 on the display;

l

wait two minutes until the end of the
auto-purging cycle;

l

turn knob “7” of figure 1 until it reaches
the heating temperature desired. Turn
knob “11” of figure 1 until it reaches the
domestic water temperature desired.

The flame control appliance will start-up
the burner.
If the burner fails to ignite within 5
seconds, the boiler will automatically
attempt ignition another three times, after
which if it fails to start-up, it will shut down

and the display will show 

 01.

Press the 

 button in order to re-set

normal operating conditions. The boiler will
automatically attempt another start-up.

CAUTION!!! If the appliance

frequently shuts down, contact a
qualified technician to restore normal
running conditions.
Now the boiler will continue to operate in
relation to the service requested and will
indicate the following on display “1”:

 if a domestic water request is active;

  if a heating request is active;

  if there is no domestic water or heating

request active.

3.6 - “Users’ menu”

Entry into the  “Users’ Menu” is shown
by display “1” blinking. In order to access

the “Users’ menu” just:

l

press the 

 button for 2 seconds

until the display starts to blink;

l

press and release the 

 button

several times until the parameter
desired is displayed;

l

by means of the 

 or 

 keys,

it is possible to change the value of
the parameter;

l

press 

  in order to confirm the

amended data and pass onto the next
parameter;

l

Once you have reached the end of the

menu, on the last 

, the display

“1” stops blinking indicating exit from
the “Users’ menu”.

If no key is pressed for more than 60
seconds, one automatically exists the
menu. Any change in the parameters not

confirmed using the  

 button, will

be lost.
In this menu it is possible to consult and/
or change the parameters indicated in
figure 3.