COSMOGAS NOVADENS 24, User Manual

5

3 - USE

Figure 1 - Instrument panel

3.1 - Check that the
cocks are open

- The gas cock must be open;
- any supply and return valves must be
open;
- any hot and cold water valves must be
open.

3.2 - Check heating
system pressure

If the pressure inside the heating circuit
falls below  0.5 bar, the appliance
switches off and the display 1 as per

figure 1, shows 

 to indicate

that it is necessary to restore the correct
pressure. Proceed as follows:

l

open the filling cock (see figure 5)
turning it in a counter-clockwise
direction;

l

check the pressure on the pressure
gauge “13” of figure 1,  it must reach a
pressure of 1.5 bar and the indication

 must disappear;

l

close the filling cock (see figure 5)
turning it in a clockwise direction.

CAUTION!!! During normal

operations, the filling cock (see
figure 5) must always remain in the
closed position.

If, with time, the pressure drops, restore
the correct value. This operation may
have to be repeated several times
during the first month of operations to
remove any gas bubbles present.

3.3 - Overview

The boiler is pre-set with standard
parameters. However, it is possible to
make a number of changes or consult
the parameters by means of using the
“Users’ Menu” (see section 3.6).
During functioning display “1” of figure 1
displays the status of the boiler and
display  “2” (see figure 1) shows the

value of the parameter. The various
operating statuses are shown in the
table in figure  2.
Within the “Users’ Menu” (see section
3.6) it is possible to check the last
lock-outs or errors which have occurred.
In addition to the operating modes, the
instrument panel provides important
information on the current functioning of
the boiler, via the indicators “3”, “4”, “5”
and “6” of figure 1. In particular:
- the indicator “3” displays whether the
burner is functioning (on) or whether it is
off (blinking);
- the indicator “4” displays whether the
domestic hot water service is on or off;
- the indicator “6” displays whether a
heating service request is active (on) or
nor (off).

  1 - Parameter display.
  2 - Display of values adopted by parameters.
  3 - Burner status indicator. On = burner on, flashing = burner off.
  4 - Domestic hot water service status indicator. On = d.h.w. on, Off = d.h.w. off.
  5 - Indicator of decimal of value displayed.
  6 - Heating service status indicator. On = heating on, Off = heating off.
  7 - Heating temperature and start control.
  8 - Key for decreasing parameter values.
  9 - Key for resetting shutdowns and for scrolling the list of parameters.
10 - Key for increasing parameter values.
11 - Domestic hot water temperature and start control.
12 - On/off power switch.
13 - Heating circuit pressure gauge.