Italkero Eco SC Series, Installation And After-Sales Service

Page: 24 / 40

24 INSTALLER
The heater is supplied configured for methane gas
operation (G20) as indicated on the nameplate, and is
factory adjusted.
To change the settings, for example, after extraordinary
maintenance, after having replaced the gas valve, or
after having changed the gas type from methane to LPG
or back, proceed as follows.
The adjustments may only be made by the manufacturer's
Technical Service.
NOTE: The appliance may be ordered from the
manufacturer in the LPG version.
Open the gas cock and start the heater an maximum
power (thermostat set to pos. 7).
methane g20 (20mbar); nominal and minimum
pressure adjustment.
Checking the supply pressure
- slacken off the pressure port screw (1), connect the
pressure gauge and check that the mains pressure (1) is
between 17 and 25 mbar (as shown in the table), then
remove the pressure gauge and close the port.
- slacken off the pressure port screw (2), connect
the pressure gauge and check that the nominal and
minimum pressures (2) match the values given in the
table.
Nominal pressure adjustment
With the appliance running at maximum power, and the
thermostat knob turned to pos. 7.
- check that the nominal pressure values match those
given in the table.
If necessary, adjust with the pressure regulator on the
gas valve (the screw has a slot which is accessible
through the hole between the thermostat knob and the
ignition/control knob).
Turn the regulator screw CLOCKWISE to increase the
pressure and COUNTERCLOCKWISE to decrease it.
Minimum pressure adjustment
always set the minimum pressure only after having
first set the maximum pressure!
With the appliance running at minimum power, and the
thermostat knob turned to pos. 1.
- check that the minimum pressure values match those
given in the table.
If necessary, adjust them with he minimum flow rate
regulator screw on the right side of the gas valve.
Turn the regulator CLOCKWISE to decrease the pressure
and COUNTERCLOCKWISE to increase it.
Once the settings have been made, seal both the
pressure and minimum flow rate regulators with a drop
of paint, then disconnect the pressure gauge from the
pressure port and turn in the screw.
- lPg - butane g30 (29 mbar) and propane g31 (37
mbar); nominal and minimum pressure adjustment.
Checking the supply pressure
- slacken off the pressure port screw (1), connect the
pressure gauge and check that the supply pressure
is 29 mbar for butane and 37 mbar for propane, then
remove the gauge and close the port.
If the mains pressure is too low, use the low pressure
regulator on the main manifold or the regulator on the
gas canister itself.
Check that the vaporisation capacity of the LPG system
is adequate.
Nominal pressure adjustment
With the appliance running at maximum power, slacken
off the pressure port screw (2), connect the pressure
gauge and check that the nominal pressure values
match those given in the table (Injector pressure).
In LPG operation, for category 3+ only, the regulator
must be decommissioned by turning the regulator
screw clockwise (3 for model SC/SV and 1 for model
SE) to a value just below the maximum supply pressure.
Disconnect the pressure gauge and close the port.
If the appliance is set to pure propane, to prevent the
heat exchanger overheating, you must check that the
unit is specified for this type of gas only and not for a
propane/butane mix or pure butane.
adjustments
MODEL
18
30
BUTANE
nom. / red.
28,8 / 6,0
28,7 / 6,0
PROPANE
nom. / red.
36,8 / 6,8
36,7 / 6,8 mbar
mbar
45
28,6 / 6,0 36,5 / 6,8 mbar
sc/sV