5
2
60T - 280T
COSMOGAS
15 - COMMISSIONING
15.6 - Ignition
15.6.1 - Boiler ignition
1.- open the gas cock;
2.- power the appliance and position the main switch to ON
(part “T” in figure 16-1);
3.- the appliance only switches on when the temperature
required by the room thermostat is higher than the current
supply temperature. Adjust the desired temperature for
heating service using the
and
keys. If the
external probe is connected (see section 13.1.4), make
sure that the calculated temperature (see section 16.14,
parameter
1012
or parameter
1107
for appliances
from 115T to 280T) is higher than the current exchanger
temperature and that the external temperature (see section
16.14 parameter
1004
) is lower than the external
temperature that switches off the heating (see section 16.15
parameter
2020
);
4.- if the appliance is connected to a storage tank (see section
13.2), press the
and
keys to select the
desired temperature of the domestic hot water.
5.- if the display shows a low water pressure error (see section
16.16.2), bleed the air again.
15.7 - Checking the supply gas
pressure and any adjustments
The gas supply pressure must correspond with what is in
the table in section 18. To check it, proceed as follows:
1.- close the gas cock;
2.- access the inner components of the appliance by
following the procedure in section 17.2;
3.- loosen pressure plug “D” (see figure 15-6);
4.- connect to a manometer with a resolution of at least 0,1
mbar (1 mmH2O). For models from 115T to 280T you
can use any one of the valves;
5.- open the gas cock;
6.- make sure the pressure does not exceed 45 mbar;
7.- position the main switch to ON (part “T” in figure 16-
1) and generate a heating demand by pressing the
key until the maximum value. Make sure the
room thermostat is being called and the system is in the
conditions to dissipate the heat generated;
8.- Set parameter
2200
to
HIGH
(in the 60T and 70T
models, use parameter
2010
). The burners will now
work at maximum output heat for 20 minutes;
9.- with the appliance at maximum flow rate, make sure that
the gas supply pressure does not drop below 10 mbar
(100 mmH
2
O). If the pressure is lower, do not attempt to
adjust the appliance; you must work upstream to reset
proper pressure and gas flow rate.
ATTENTION !!! Do not touch screws “E” and
“F” in figure 15-10. They are factory set for proper gas
flow rate and supply pressure.
After having made sure the gas pressure is correct:
1.- Bring parameter
2200
back to
OFF
(in the 60T and
70T models, use parameter
2010
).
2.- close the gas cock;
3.- disconnect the manometer and close pressure plug “D”
again;
4.- check for and gas leaks from pressure plug “D” (figure
15-6);
Do not force the pressure plug locking screws to avoid
damaging the gas valve.
ATTENTION!!! Run the seal test exclusively with
a soap-based water solution. Using naked flames is
absolutely prohibited.
