Instruction manual
40
11.2 - General
warnings
concerning gas
supply
When starting up the boiler for the first
time the following must be checked:
That the boiler is supplied with the
type of fuel that it is configured to
use. Read sections 11.3 and 11.4
That the gas supply pressure is
within the maximum and minimum
values given in listed on the boiler
rating plate. The gas supply
pressure must be checked with
boiler on and the boiler off.
That the gas supply system is
provided with all the safety devices
and controls required under current
national and local codes.
That the vent and combustion air
terminals are free from any
blockages.
That the condensate drain tube is
properly connected.
WARNING!!! If you smell gas:
Do not try to light any appliance.
Do not touch any electrical
switch. Do not use any phone in
your building.
Immediately call your gas
supplier from a neighbor’s
phone. Follow the gas supplier’s
instructions.
If you cannot reach your gas
supplier, call the fire depart-
ment.
Failure to follow the above steps
can result in a fire or explosion
causing property damage, personal
injury or loss of life!
11.3 - Confirming
the boiler’s gas
type
The type of gas and the gas supply
pressure that the boiler is set up for is
listed on the rating label.
The boiler can operate using one of the
following two gases:
NATURAL GAS
Maximum supply pressure = 11
in.W.C. (27.5 mbar).
Minimum supply pressure = 1.5
in.W.C. (3.8 mbar).
LP Gas
Maximum supply pressure = 13
in.W.C. (32.5 mbar).
Minimum supply pressure = 8 in.W.C.
(20 mbar).
11.4 - Gas type
conversion
If the gas available at the installation
site is not the type the boiler is
configured to use, the boiler must be
converted. Special conversion kits are
available for this purpose. The
instruction inside the conversion kit
must be followed.
WARNING!!! Conversion of the
boiler to use another type of gas
must be carried out by a qualified
technician. Improper conversion of
the gas valve could result in a fire
or an explosion causing severe
personal injury or death!
11.5 - Start-up
Open the manual gas shut off valve,
figure 16 and 17, item “3”.
Switch the on/off power switch, item
“34” in figure 1, to “on”.
If the display shows code E 21, it
means that the polarity has not
been observed between the hot and
neutral wires. If this happens the
wires must be switched.
Upon start-up, an is shown for 2
minutes while the boiler goes
through its heating system purge
cycle as described in section
11.1.5. To by-pass this stage, press
the and keys together
until a blinking appears. Then
press the button.
Rotate knobs “32” and “33” shown in
figure 1 to the desired temperature.
The boiler will fire only when the
room thermostat calls for heat. If an
external temperature sensor is
connected, check that the
temperature calculated is higher
than the minimum running
temperature as explained in section
12.4.
If the pump indicator is illuminated,
item “6” in figure 42, but the pump is
not running, item “45” in figure 1, it
may be stuck. If this is the case it
can be released by removing screw
“44” shown in figure 1 and turning
the screw underneath.
If the pump indicator is illuminated
but the heating system does not
heat up, repeat the air purging
operations on both the boiler and the
heating system.
11.6 - Ignition
control testing
After placing the boiler in operation, the
ignition control’s safety shutoff function
must be tested as follow:
turn the power switch (item “34” in
figure 1) to on;
close the room thermostat to create
a call for heat;
turn knobs “32” and “33” in figure 1
to their maximum position;
wait a few minutes for the burner to
light-up as indicated when light “3”
shown in figure 42 stays illuminated.
close the manual gas shutoff valve,
see figure 16 and 17, item “3”;
after 40 seconds, the display must
show L01;
open the manual gas shutoff valve,
see figure 16 and 17, item “3”;
verify your gas meter, gas flow must
be zero.
WARNING!!! If gas flow occurs,
close the manual gas shutoff valve
and troubleshoot the system to
determine why there is gas flow
when the gas valve should be
deenergized. Do not operate the
boiler until the problem is resolved
or a fire or explosion causing
property damage, personal injury
or loss of life may occur!
11 - OPERATING