Adjustments - Riello MINI 17 LN NG Installation And User Manual

Proceed as follows to perform the conversion:
- switch off the electrical supply
- remove in succession the casing, the air distribution box cover and the
combustion chamber cover
- disconnect the glowplug cable connection
- remove the lower cable grommet from its seat on the air distribution box
- loosen the nuts (A) of the by-pass train
- loosen the nut (B) of the burner/flow meter train
- take out the clips (C) securing the trains to the burner
- disconnect the trains (D) from the burner
- unscrew the 4 screws (E) fixing the burner to the back board
- once the burner has been taken out (F), unscrew the screws (G) fixing
the manifold to the burner
- at this point, using a socket wrench and a fork spanner, remove the
nozzles and the washers and replace them with the ones in the kit.
Models 11-13
B
A
D
C
Models 17
B
A
D
C
F
E
G
Fig. 20
F
E
G
Fig. 21
b
Use and assemble the washers contained in the kit also in case of
manifolds without washers.
For the conversion from methane gas to LPG, install the burner flange
(H).
For the conversion from LPG to methane gas, remove it.
b
Before removing the burner flange, empty the water heater as de-
scribed in the paragraph "Emptying the water heater".
Then set Parameter 4 (see paragraph "Parameters menu") as follows:
Conversion from METHANE to LPG
Parameter
4
Conversion from LPG to METHANE
Parameter
4

3 11 Adjustments

The boiler has already been factory set by the manufacturer.
If it is necessary to adjust it again, for example after extraordinary main-
tenance, after replacement of gas valve or after gas conversion, carry out
the following procedure.
b
The maximum output adjustment must be carried out in the se-
quence indicated exclusively by qualified personnel.
- Remove the casing by unscrewing the fixing screws A (see section "
Removing the casing").
- Loosen the screw of the pressure test point (1) downstream from the
gas valve by roughly two turns, then connect the pressure gauge
- Disconnect the compensation connector (5) from the gas valve
ENGLISH
H
Fig. 22
Value
1
Value
0
33