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13 - GAS CONVERSION
It is easy to convert from one gas family to another even after the
boiler has been installed. This operation must be performed by
professionally qualified staff. The boiler is designed to work with
natural gas or LPG. The product plate indicates which fuel it has
been fitted out to use.
It is possible to convert the boiler from one kind of gas to the other
using kits which can be supplied on request:
- natural gas to LPG conversion kit
- LPG to natural gas conversion kit.
To disassemble, proceed as follows:
- disconnect the boiler from the power supply and close the gas
tap
- remove the components to access to the internal parts of the
boiler (fig. 79-80)
- disconnect the sparkplug cable
- remove the burner fixing screws and remove the latter with the
spark plug attached and corresponding cables
- remove the nozzles and washers with a socket or fork wrench
and replace them with the ones in the kit
Use the washers contained in the kit even for washerless
collectors.
- put back the burner into the combustion chamber and tighten
the screws fixing it to the gas collector
- reconnect the spark plug cable
- remount components previously removed
- power the boiler and open the gas tap (with the boiler working,
check there are no leaks in the gas supply circuit).
Programme the "Gas type" parameter and adjust the boiler as
described in the "Adjustments" chapter.
The boiler may only be converted by qualified staff.
After conversion, adjust the boiler again as shown in the
relative paragraph and apply the new rating plate contai-
ned in the kit.
15 - SERIAL NUMBER PLATE
DHW operation
CH operation
Qn
nominal capacity
Pn
nominal power
IP
protection level
Pmw
DHW maximum pressure
Pms
CH maximum pressure
T
temperature
D
specific capacity
NOx
NOx value class
14 - CHECKING COMBUSTION
PARAMETERS
To ensure the product remains in perfect working order, and to
comply with current legislation, systematically check the boiler at
regular intervals.
To analyse combustion, proceed as follows:
- access the CALIBRATION & SERVICE phase by setting the
password as indicated in chapter "Adjustments"
- turn the domestic hot water temperature selector to maximum
heating power (parameter HH).
The boiler works at maximum power for 4 minutes.
- the hole for inserting analysis instruments must be made in the
section of straight pipe immediately after it leaves the hood in
compliance with current law (A, fig. 81a).
The fumes analysis probe must be fully inserted.
IMPORTANT: the function that switches off the boiler when water
temperature reaches a maximum of about 90 °C is still enabled
during the combustion analysis phase.
N.
230 V ~ 50 Hz
W
Pmw = bar T=
°C
Pms = bar T=
°C
17
COD.
Qn =
kW
Pn =
kW
regolata per:
set at:
B11BS
calibrado:
engestellt auf:
réglage:
Exclusive C.A.I.
D:
l/min
kW
kW
NOx:
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