TECHNICAL ASSISTANCE SERVICE
42
TAU UNIT
boilers are set up in the factory for G20/G25
20/25mbar.
If actual combustion parameter values differ from those
given in the tables below, contact
r
's Technical
Assistance Service.
Proceed as follows to set combustion parameters:
- Press and hold the
T
and
R
keys for between 3
and 6 seconds to enter chimney sweep mode. The 'chim-
ney sweep' symbol on the display starts to flash and the
display reads out the current boiler temperature.
- To set combustion parameters for maximum and mini-
mum power, press and hold the
T
and
R
keys
simultaneously for over 6 seconds. The boiler enters
fan speed control mode.
- Press the
U
key.
The fan switches to maximum speed.
- Unscrew the plug (1) and insert the combustion
analysis probe into the socket at the rear of the boiler.
- Remove the top panel (2) and set the CO
2
level by
turning the adjuster screw (3) on the fan group with an
Allen screw. Turn the screw clockwise to reduce CO
2
,
anti-clockwise to increase CO
2
.
Once the adjustments are complete, the combustion
parameters should be as specified in the tables below.
CO
2
values for functioning at
MAXIMUM POWER
1
CALIBRATING COMBUSTION PARAMETERS
TAU 150 UNIT TAU 210 UNIT
G20 (%)
9
9
G31 (%)
10,1
10,1
2
3
