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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
− set the CO2 with a screwdriver on the regulation screw (2)
placed on the gas valve, thus reaching the value reported
on the table.
Versions TAU Unit 50 ÷ TAU Unit 70
2
Versions TAU Unit 100 ÷ TAU Unit 140
2
TAU Unit
Gas type
50
G20
8,9/9,1
G25
8,9/9,1
G31
9,9/10,1
69
COMMISSIONING AND MAINTENANCE
TAU Unit
TAU Unit
TAU Unit
70
100
115
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
TAU Unit
140
8.8/9
8.9/9.2
9.9/10
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