User manual

Installation Manual
Wall Hung Condensing Boiler – Cod. 99921NA – June 2002
10
RS
S
T
PUMP CAP
AIR VENT VALVE
AIR VENT VALVE CAP
CIRCULATING PUMP
• check the pressure in the system: if this has gone down, comes on restore
pressure;
• close the filling tap R (see fig. 2) once this operation is completed;
•
remove the
T
cap and fill the siphon with water for ¾ of its total capacity
(fig.2);
•
close the
T
cap and connect the pipe
B
to the discharge pipe;
Filling the system (only for U.K. and Ireland)
After making sure the gas cock is closed, fill the heating system as follows;
• fill the system until a pressure of 1.5 bar has been reached (light no. 10 ON;
see fig. 1 pag. 9) and then close the tap on the filling loop;
• make sure the cap on the auto air vent valve is slightly loose to allow air to
escape from the system;
• undo the cap on the circulation pump to eliminate any eventual air locks; it
is a good idea to purge all radiators of air at this point too;
• before starting up the boiler the water pressure must be checked again; if
this is seen to be below 0.5 bar, bring it back up to 1.5 bar (light no. 10 ON;
see fig. 1 pag. 9) and close the tap on the filling loop
• set ON/OFF switch in ON position (fig.1 page 9), after a few seconds the
pump will come into operation;
• once the boiler is working, if any noises are heard in the system, repeat the
above air purging procedures until there is no air left in the system;
• check there are no obstructions in the exhaust duct;
• check the pressure in the system: if this has gone down, comes on restore
pressure;
• close the tap on the filling loop once this operation is completed;
•
remove the
T
cap and fill the siphon with water for ¾ of its total capacity
(fig.2);
•
close the
T
cap and connect the pipe
B
to the discharge pipe;
Starting up the boiler
• open the gas cock;
• turn on the boiler;
• push Pad 5 and select the SUMMER only – WINTER only or SUMMER and
WINTER mode- Led 12-13 ON confirm the selection;
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. Set the ON/OFF
switch 1 (see fig.1) to OFF and then ON position and try the ignition procedure
once again. If the boiler does not start, reset boiler and Set the ON/OFF switch 1 to
OFF and then ON position.
IMPORTANT
should the boiler fail to ignite wait 3 minutes before a new ignition
procedure.
In case of water deficiency the display shows code 04 intermittent and the Led 8 is ON.
To restore water pressure open the tap on the filling loop and fill the system, when led
10 (1.5 bar pressure) is ON, close the tap.
•
once the boiler is ON, check the CO2 value with a CO-CO2 analyser (see table no.1). In case the value is different from the one shown in
the table, it is necessary to proceed with the boiler regulation.
N.B.:
Boiler calibrations must be carried out by qualified personnel only.
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 9);
• wait for the boiler to cool down;
turn the system drain tap RS (see fig. 1) 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).
CONVERSION OF GAS TYPE
The boiler gas conversion from Natural Gas to L.P.G. or vice-versa must be carried out by qualified personnel only.
Table n°1
Gas type CO2 %
G20 9.4
G 30 / 31 10.9 / 10.96
Fig. 1
Fig. 2
Fig. 3