Conversion From One Type Of Gas To The Other - Riello TAU Unit 140 Installation And Maintenance Manual

3.5

Conversion from one type of gas to the other

The boiler TAU Unit is delivered set up to operate with G20
(methane gas), however it can be converted to operate with the
following gases:
No kit expected. No gas regulation /
BE
G25
With dedicated kit. Regulation/ modification
FR
of the parametrization as described below.
EN
With dedicated kit. Regulation/ modification
G31 FR
of the parametrization as described below.
CH
9
Note that all modifications to the gas feed system are for-
bidden in Belgium. In Belgium, contact
sistance Service.
9
Conversions must only be performed by qualified personnel
from R 's Technical Assistance Service, even after the boil-
er has been installed.
Before making the transformation:
− Cut power off by setting the main switch of the system
and of the thermal module to "off"
− Close the fuel shut-off valve
Install the kit following the indications on the manual supplied
with the accessory.
− Apply the new gas sticker (6) supplied inside the panel-
ling, and remove the one for G20
6
parametrization allowed.
R 's Technical As-
9
After installing the kit, check the tightness of all connections
made.
If all conditions are met, power the thermal module positioning
the main switch of the system and of the equipment to "on".
Open the fuel shut-off valve.
9
Once the conversion is completed, adjust the thermal unit
again following what indicated in the paragraph "Adjust-
ments".
9
The pressure values for the gas supply are:
− for G20 = 20 mbar
− for G25 = 25 mbar
− per LPG (G31) = 37 mbar
67
COMMISSIONING AND MAINTENANCE