17
1.10. Boiler operation
1.10.1. Switching on the boiler
These instructions assume that the boiler has been installed by a company authorised for the purpose, that the first
started up has been already performed and the boiler has been prearranged for a correct operation.
- Open the gas supply interception valve;
- position to ON the switch on the electrical system upstream the boiler. The display comes on indicating the type of gas, the power set
and the function active in that moment (see Table 3 and Table 4);
- select the boiler operation system by pressing the related key "
" (
A
fig. 1) OFF/SUMMER/WINTER (par. 1.2);
- set the temperature value of the heating water (see paragraph 1.10.2);
- set the temperature value of the domestic hot water (see paragraph 1.10.3);
- set on the house thermostat (if present) the necessary ambient temperature value.
CAUTION
After a long inactivity period of the boiler, especially for boilers operating with propane, there could be difficulty upon ignition.
Therefore, prior to switching on the boiler, start up a gas operated appliance (e.g. a stove).
Despite this, the boiler could get blocked once or twice. Restore then the operation of the same by pressing “
1.10.2. HEATING function
To adjust the temperature of the heating water hold for the cycle time the key “
” (
C
fig. 1) and then use on the keys "
" or "
" (
E
or
F
The adjustment range of the heating temperature depends on the operating range selected:
-
standard range
: from 20°C to 80°C;
-
low range
: from 20°C to 47°C.
The operation range must be selected by the installer or by an Authorized Service Centre (see section 3.2.11).
While the temperature is being set, the heating symbol on the screen flashes (
2
fig. 1) and the value being set for the heating water tem-
perature is displayed.
When the heating system requires heat, the symbol of heating on the display flashes (
2
fig. 1) and the instantaneous temperature of the
heating water in delivery is displayed. The burner symbol ON (
1
fig. 1) comes out only when the burner is running.
The waiting time between one ignition and the next of the boiler, meant to avoid frequent switching on and off of the boiler during heating
operation, ranges between 0 and 10 minutes (default 3), and can be edited in the parameter P05.
1.10.3. DOMESTIC Function
To adjust the temperature of the domestic hot water, hold for the cycle time the key “
” (
D
" or "
" (
E
or
F
This function has always priority over the heating function.
The temperature adjustment of the domestic hot water ranges from 10°C to 60°C.
While the temperature is being set, the heating symbol on the screen flashes (
7
fig. 1) and the value being set for the domestic hot water
temperature is displayed.
When the heating system requires heat, the symbol of heating on the display flashes (
7
fig. 1) and the instantaneous temperature of the
heating water is displayed. The burner symbol ON (
1
fig. 1) comes out only when the burner is running.
1.10.4. ANTIFREEZE Function
The boiler is equipped with an anti-freeze protection system enabled with the operating modes: OFF/SUMMER/WINTER/.
The antifreeze function protects the boiler only, not the entire heating system.
The heating system can also be effectively protected from freezing by using specific antifreeze products suitable for systems made from
several metals.
Do not use antifreeze products for vehicles motors and check the effectiveness of the product in time.
If the burner could not get switched on due to lack of gas, the antifreeze functions stay enabled by feeding the circulators.
