25
3-3
4
3
2
1
5
6
4
3
2
1
6
5
INS
TALLER
US
ER
MAINTEN
AN
CE TECHNI
CI
AN
Gas type selection (G1)
Range of values which can
be set
Standard
setting
nG - Methane
lG - LPG
Ci – China
The same
as the
type of gas
being used
Ignition output (G2)
Range of values which can
be set
Standard
setting
0 - 70 %
Set
according
to factory
inspection
3.6 CONVERTING THE BOILER TO
OTHER TYPES OF GAS.
If the boiler has to be converted to a different gas
type to that specified on the data plate, request
the relative conversion kit for quick and easy
conversion.
Boiler conversion must be carried out by a
qualified technician (e.g. Immergas After-Sales
Technical Assistance Service).
To convert to another type of gas the following
operations are required:
- remove the voltage from the appliance;
- replace the main burner injectors, making sure
to insert the special seal rings supplied in the
kit, between the gas manifold and the injectors;
- apply voltage to the appliance;
- from the push button panel on the boiler, select
the type of gas (G1) and then select (
Ng
) if it
runs on Methane or (
Lg
) if it runs on LPG;
- adjust the boiler nominal heat output;
- adjust the boiler minimum heat output;
- adjust the boiler nominal heat output in heating
phase;
- adjust (eventually) the maximum heating
output;
- adjust the "Ignition power" with the same value
as "Minimum heating output";
- seal the gas flow rate devices (if adjusted);
- after completing conversion, apply the sticker,
present in the conversion kit, near the data-
plate. Using an indelible marker pen, cancel
the data relative to the old type of gas.
These adjustments must be made with reference
to the type of gas used, following that given in
the table (Par. 3.18 / 3.21).
3.7 CHECKS FOLLOWING
CONVERSION TO ANOTHER TYPE
OF GAS.
After making sure that conversion was carried
out with a nozzle of suitable diameter for the
type of gas used and the settings are made at the
correct pressure, check that:
- there is no flame in the combustion chamber
- the burner flame is not too high or low and that
it is stable (does not detach from burner)
- the pressure testers used for calibration are
perfectly closed and there are no leaks from
the gas circuit.
N.B.:
all boiler adjustment operations must
be carried out by a qualified technician (e.g.
Immergas After-Sales Technical Assistance).
Burner adjustment must be carried out using
a differential "U" or digital type pressure gauge
connected to the pressure socket located above
the sealed chamber (part. 7 Fig. 1-30) and the gas
valve pressure outlet (part. 4 Fig. 3-3), keeping to
the pressure value given in the table (Par. 3.18 /
3.21) according to the type of gas for which the
boiler is prepared.
Heating switch-on delay request from room
thermostat and remote control.
The boiler is
set to switch-on immediately after a request. In
the case of particular systems (e.g. area systems
with motorised thermostatic valves etc.) it may
be necessary to delay ignition.
Heating switch-on delay request from
room thermostat and remote control (P8)
Range of values which can
be set
Parameter
0 - 20 (0 - 10 minutes)
(01 equals 30 seconds)
0
(0’)
DHW ignition delay.
This function does not af-
fect the correct functioning of this boiler model.
Solar mode (P9)
Range of values which can
be set
Standard
setting
0 - 20 seconds
0
Gas type selection.
The setting of this function
is used to adjust the boiler so that it can operate
with the correct type of gas
To access this regulation, once having entered the
programming mode, press the button (2) for 4
seconds. To exit, press button (2) again 4 seconds.
Key:
1 - Coil
2 - Minimum o ut p ut
adjustment screws
3 - Maximum output
adjustment nut
4 - Gas valve outlet pressu-
re point
5 - Gas valve inlet pressure
point
6 - Protection hood
SIT 845 GAS Valve
VK 4105 GAS valve
Summary of Contents for MINI NIKE X 24 3 E
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