Installation Manual
SYSTEM BOILER – Cod. 99951NA – November 2002
11
• check the pressure in the system: if this has gone down, restore it until the pressure gauge shows 1.5 bar. Close the tap
on the filling loop once this operation is completed;
STARTING UP THE BOILER
•
open the gas cock;
•
turn on the boiler;
•
set the selector to winter;
•
make sure that 5 and 6 light are ON (fig.2 pag.10) on the boiler panel. If light no. 4 is ON, it means water deficiency in the
system: fill the system until a pressure of 1,5 bar has been reached (light no. 6 ON; fig 2 pag. 10) and then close the tap.
The automatic ignition system will turn the burner ON. It may be necessary to repeat the procedure a few times to purge
air from the pipes. To repeat the ignition procedure in any case wait 3 minutes before turning the boiler off and on again,
then try to ignite it once more;
• calibrate the boiler;
• after carrying out this operation, return the panel to its correct position and put the front casing back;
REGULATING THE HEATING TEMPERATURE
The heating temperature is regulated by turning knob 2 (fig.1 pag.10) to the temperature required, chosen from the different
values printed around the selector.
The temperature range goes from a minimum of 35°C to a maximum of 80°C.
EMPTYING THE CENTRAL HEATING THE SYSTEM
Whenever it is necessary to empty the system, proceed as follows:
• turn off the main power supply switch;
• wait for the boiler to cool down;
• undo the system drain tap and use a container to collect the water that runs out;
WARNING
Please ensure that the boiler in commissioned in line with all BENCHMARK BOOKLET REQUIREMENTS. Failure to do this
may in validate the guarentee.
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