47
MYDENS
COSMOGAS
7 - USE
7.4 - Ignition procedure
1. - Power up the appliance and open the gas supply;
2. - Press the "T" button (Figure 51);
3. - Adjust the desired temperature from the heating service
using the keys
and
;
4. - Display shows the icon
("E" Figure 51);
- Icon
fixed: central heating inactive;
- Icon
flashing: central heating in operation;
- If the icon
flashes but the radiators still do not
heat up, bleed the air from the radiators again;
5. - Check the condition of the pump and replace it if
necessary;
6. - Adjust the desired temperature for the domestic hot
water service using the keys
and
;
7. - Display shows the icon
("F" Figure 51);
- Icon
fixed: domestic hot water inactive;
- Icon
flashing: domestic hot water service in use;
8. - The command and control equipment will start up the
burner;
9. - If the ignition does not occur within 20 seconds, the
appliance automatically retries the ignition three times,
after which if it continues to not light, it locks and the
display will indicate
Loc 1
;
10. - Press the RESET button to restore normal operating
conditions;
11. - The appliance will automatically attempt a new ignition;
a
WARNING!!! If shutdown due to lockout occurs
frequently, contact a qualified installer to restore
normal operating conditions.
12. - Once started correctly, the appliance will continue to
operate for the requested service;
13. - Set the heating mode (section 7.8);
7.5 - Summer operating mode
Whenever the central heating function is to be stopped for
a long period of time, leaving only the domestic hot water
function operating, adjust the central heating temperature
to the minimum using the keys
o
until the
message 0FF appears.
7.6 - Winter operating mode
In winter operating mode, the appliance sends the water
to the system via the pump at the temperature set using
the keys
o
. When the temperature inside
the appliance approaches the temperature set, the burner
starts to modulate the flame to reduce the power to the
effective power required by the system. If the temperature
starts to rise further, the burner stops. At the same time the
pump that sends water to the system is switched on and
off by the room thermostat. This can be noted because
the indicator
, flashes when the pump is on, while it
remains on when the pump is off. The pump may initially
make a noise. This is due to the presence of residual air in
the hydraulic system, which will disappear quickly, without
any intervention. For a sustainable use of the appliance, it
is recommended to keep the central heating temperature,
adjusted using the keys
o
, at the lowest value
possible, compatibility with the temperature requested in
the rooms. If the winter season is particularly cold, meaning
the room temperature can no longer be maintained, raise
the central heating temperature to higher values.
7.7 - Adjusting the instantaneous
domestic hot water
The temperature of the domestic hot water is adjusted
using the keys
and
. Once one of the
two keys has been pressed, the display “N” (Figure 51)
starts to flash and show the temperature that is being
set. The temperature of the domestic hot water can be
set to between a range of 40°C and 60°C. By pressing
and holding the key
down even below 40°C, the
message
OFF
appears to indicate that the domestic hot
water service is being switched off, also switches off the
icon
“F” (Figure 51).
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