Adjustments - Riello MINI LN Series Installation And User Manual

ENGLISH
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".
See Fig. 37
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
- Remove the protective hood (2)
- Open a water tap to its maximum flow rate, set the temperature selector
to maximum and power up the water heater
See Fig. 38
Adjusting to the maximum value:
- Screw the nut (3) fully on until obtaining the gas pressure shown in the
table
Maximum gas pressure at nozzles
G20
Models 11 G30
G31
G20
Models 13 G30
G31
G20
Models 17
G31
20
Value
1
Value
0
12,00 mbar
122,37 mm. W.C.
27,40 mbar
279,40 mm. W.C.
35,40 mbar
360,98 mm. W.C.
14,00 mbar
142,76 mm. W.C.
27,40 mbar
279,40 mm. W.C.
35,40 mbar
360,98 mm. W.C.
15,20 mbar
155,00 mm. W.C.
35,30 mbar
359,96 mm. W.C.
Adjusting to the minimum value:
- disconnect one of the two electric cables from the coil
- screw or unscrew the hex head socket screw (4) to adjust the minimum
until obtaining the gas pressure value shown in the table
- put back the protective cap (2)
Minimum gas pressure at nozzles
G20
Models 11 G30
G31
G20
Models 13 G30
G31
G20
Models 17
G31
- Reconnect the compensation socket to the gas valve (5)
- Disconnect the pressure gauge and re-tighten the pressure test point
screw (1)
b
Please remember that for operation with LPG, the appliance needs
a gas supply pressure adjuster, which should be set to 28-30 mbar
if operating with butane and 37 mbar for propane.
1,30 mbar
13,26 mm. W.C.
2,80 mbar
28,55 mm. W.C.
3,60 mbar
36,71 mm. W.C.
1,80 mbar
18,35 mm. W.C.
3,40 mbar
34,67 mm. W.C.
4,40 mbar
44,87 mm. W.C.
2,10 mbar
21,41 mm. W.C.
5,00 mbar
50,99 mm. W.C.