COSMOGAS NOVADENS 24, User Manual

8

3 - USE

Outside temperature (°C)

Supply temperature

(°C)

Figure 4 - 

Graphs of the climatic adjustment for high  temperature

systems

Outside temperature (°C)

Supply temperature

  (°C)

OA = Inclination of the line
Ob = Minimum heating
temperature
Oc = Maximum heating
temperature
br = “Fix point” of the angle
fulcrum of the line
b = parallel shift of the line
(possible using control “7” of
figure 1)

just enter the users’ menu and adjust the
parameters corresponding to figure 4. It
is necessary to consider that the thermal
inertia of a dwelling is extremely high,
therefore each time you make a change,
wait at least 24 hours to see the result.

3.11 - Domestic hot
water temperature
adjustment

To adjust the domestic hot water, turn
control knob “11” of figure 1. As soon as

the knob is touched, 

 will blink on

display “1” and the temperature being set
will appear on display “2”. It is advisable
to set this value at 50°C-55°C; if a storage
tank is present, the temperature can arrive
at 60°C-65°C.

3.12 - Room
t e m p e r a t u r e
adjustment

It is necessary to install a time-
programmable thermostat for an optimum
setting of the room temperature and thus
satisfactory energy saving; this is a
device capable of switching on and off and/

or raising and lowering the room
temperature, in relation to certain set
times. Contact a qualified technician for
the installation of this device.
This boiler is suitable for being connected
to devices of this type.

3.13 - Errors and
alarms

The boiler control device carries out
numerous checks.
When it detects a malfunction, it shuts
down the appliance and displays the
reason for the shut down on the display.
The boiler may stop as a result of two
different series of shutdowns:

 and  

 followed by the number

identifying the shutdown.

The shutdowns identified by 

 can be

re-set by pressing 

. If the boiler fails

to re-start, or if it shuts down frequently,
contact a qualified technician.

The shutdowns identified by 

 cannot

be re-set unless the cause of the problem
is eliminated. In such cases, it is
necessary to contact a qualified

technician.
The alarms shown on the display by
means of 

, do not block the boiler, but

alert the user to the fact that a system
anomaly is underway. E.g. domestic hot
water cock leak.
In this event, if you wish to reinstate the
heating function, you must turn control
knob “11” to zero and eliminate the water
leak.

3.14 - Pressure
gauge

The pressure gauge (detail “13” of figure
1) is a device which indicates the pressure
of the water within the heating circuit.