Adjustments - Riello TAU Unit 50 Installation And Maintenance Manual

3.6

Adjustments

The thermal module TAU Unit is supplied for operation with G20
(methane gas), as indicated by the type plate, and has already
been factory-calibrated by the manufacturer.
If it is necessary to adjust it again, for example after extraor-
dinary maintenance, after the replacement of the gas valve or
after a conversion from G20 gas to G25/G31 or vice-versa, carry
out the procedure below.
9
Adjustments to maximum and minimum power must be
performed in the indicated sequence and only by Technical
Assistance Service.
Before making the regulation:
− remove the upper panel
CO2 ADJUSTMENT AT MAXIMUM POWER
− Press the MENU key, select "System test" and press ● to
confirm.
Menu
" "
Domestic Hot Water (DHW)
"
Information
" "
Settings
" "
System Test
" "
− select "Max. power" with the ▲ / ▼ keys and press ● to
confirm. The fan starts turning at its maximum speed
(which can vary based on the model).
System Test
" "
Test State
" "
Fan Speed
" "
Ionisation
" "
− the appliance will operate at maximum power.
− unscrew the cap (1) and insert the combustion analyser
sensor
1
"
High Power
" "
0 rpm
" "
0.0 μA
− adjust the CO2 using a screwdriver on the adjustment
screw (2) located on the gas valve, in order to obtain one
of the values reported on the table.
Versions TAU Unit 50 ÷ TAU Unit 70
2
Versions TAU Unit 100 ÷ TAU Unit 115
3
TAU Unit
Gas type
50
G20 8,9/9,1
G25 8,9/9,1
G31 9,9/10,1
67
COMMISSIONING AND MAINTENANCE
TAU Unit TAU Unit TAU Unit
70 100
8,9/9,1 8,9/9,1 8,9/9,1
8,9/9,1 8,9/9,1 8,9/9,1
9,9/10,1 9,9/10,1 9,9/10,1
115