38
R2KA 34 /20 - RAD - ING - Inst.Manual - 2002.1_CSA
2. FIRST START-UP
SUPPOR
T CENTER
2.1.3. CO2 VALUE CHECK AND
CALIBRATION
WARNING
The CO
2
value should be measured with
the casing assembled, while the gas valve could only
be adjusted with the casing open.
To check and calibrate the CO
2
value to minimum
and maximum heating power proceed as follows:
FOR MINIMUM HEATING POWER
› Enable chimney-sweep function holding the key
‘
’ for 7 seconds (maximum operating time is
15 minutes), then press key ‘
’ of the heating
circuit
to set minimum power for heating
function, the display will show ‘Lo’.
› Insert the combustion analyser probe in the
provided exhaust tap ‘PF’ (fig. 22), then make
sure that the CO
2
value complies with the
requirements indicated in 2.2.8 “Technical data”,
otherwise adjust using screw ‘A’ (fig. 23) and
adjust using a 4 Allen wrench the screw ‘2’ (fig.
23) of the Off-Set adjuster. To increase the CO
2
value, turn the screw clockwise and counter-
clockwise if you want to decrease it.
› Once completed the adjustment, tighten the
protection screw ‘A’ (fig. 23) on the Off-Set
adjuster.
FOR MAXIMUM HEATING POWER
› Press key ‘
’ of the heating circuit
to
set maximum power for heating function, the
display will show ‘HI’.
› Make sure that the CO
2
value complies with the
indications in 2.2.8 “Technical data”, otherwise
adjust using screw ‘1’ (fig. 23) of the gas flow
adjuster. To increase the CO
2
value, turn the
screw counter-clockwise and clockwise if you
want to decrease it.
› After each adjustment variation on screw ‘1’
(fig. 23) of the gas flow adjuster you have to wait
for the boiler to stabilize itself to the set value
(about 30 seconds).
› Then press key ‘
’ of the heating circuit
to set minimum power for heating function and
check that CO
2
value hasn’t changed, in case
it has changed, please repeat the setting as
described previously.
› Press the button ‘
’ to deactivate the
chimney sweep function.
PF
1
2
A
+
+
FIRST START-UP
fig. 22
fig. 23
