Technical data

SERVICING
AND
MAINTENANCE
INSTRUCTIONS
_
CONDENSING WALL-HUNG BOILER – TG05A052.A0205
20
RS
AIR VENT VALVE CAP
CIRCULATING PUMP
AIR VENT VALVE
PUMP CAP
P
P
• close the T cap and connect the pipe P to the discharge pipe;
Starting up the boiler
• turn on the gas cock situated under the boiler grill;
• set the ON/OFF button (1) (see fig.1 pag. 19) to ON position ;
• make sure that no flashing value is on the display (14); if value 04 is
flashing and no.8 light is ON it means water deficiency in the system: open
the filling tap on the filling loop and fill the system until a pressure of 1.5 bar
has been reached (light no.11 ON) and then close the tap on the filling
loop;
• the automatic ignition system will turn the burner on;
• should the boiler fail to ignite: if the display (14) shows value 04 flashing, it
is necessary to repeat the procedure of filling the system; if the display (14)
shows value 01 flashing wait 3 minutes; set the ON/OFF button (1) to OFF
position and then ON position (fig.1). It may be necessary to
repeat the procedure a few times to purge air from the pipes;
• set ON/OFF switch (1) in OFF position (fig.1 page 19), insert a gauge
into the pressure point no.4 (fig.1 page 32). Turn ON the boiler and check
the minimum and maximum gas pressure setting in accordance with values
stated on the gas data plate (to check maximum gas pressure value, turn
ON a hot water tap and check that the maximum pressure is equal to that
stated on the gas data plate; to check the minimum gas pressure, close the
hot water tap, and select WINTER mode, the pressure gauge will show the
minimum gas pressure value for 10 seconds. If the pressure values are not
the same as those stated on the gas data plate, calibrate pressure again;
• once the calibration procedure has been completed, unplug the mains lead
or turn off the mains switch, close the gas cock and remove the gauge from
the pressure point; tighten the screw making sure there are no gas leaks;
• after carrying out this operation, return the panel to its correct position and
put the front casing back.
CHECK the maximum heating power.
For procedure regarding regulation of the heating system thermal capacity see
«BOILER ADJUSTMENTS».
EMPTYING THE CENTRAL HEATING SYSTEM
Whenever it is necessary to empty the system, proceed as follows:
• set ON/OFF switch in OFF position (fig.1 page 19);
• wait for the boiler to cool down;
turn the system drain tap RS (see fig. 2) and use a container to collect the
water that runs out;
EMPTYING THE DOMESTIC HOT WATER SYSTEM
Whenever there is danger of freezing, the hot water system should be emptied in the following way:
•
shut off the water at the mains;
•
open all hot and cold water taps;
• empty from the lowest point (where possible).
WARNING
Please ensure that the boiler in commissioned in line with all BENCHMARK BOOKLET REQUIREMENTS. Failure to do this may in validate
the guarantee.
Fig. 2
Fig. 1
Fig. 3