CONDEXA PRO
62
1
2
3
1
The
Vokera CONDEXA PRO
Boiler is supplied for ope-
ration on G20 (natural gas), as indicated on the rating
plate, and has already been adjusted in the factory by
the manufacturer.
If, however, the adjustments need to be performed
again, for example after special servicing operations,
the replacement of the gas valve, or alternatively fol-
lowing the conversion from G20 to G30-G31 or vice-
versa, proceed as follows.
CO2 ADJUSTMENT AT MAXIMUM OUTPUT
- Press the “
MODE
” and “
+
” buttons together for 5s.
- Start the boiler by adjusting the room thermostat.
The boiler will operate at maximum output showing "H" on
the display, followed by the outlet temperature (chim-
ney sweep function).
- Unscrew the cap (1) and insert the combustion analy-
ser probe
- Adjust the CO2 using a screwdriver on the adjustment
screw (2) located on the fan assembly (
turning
clockwise decreases the CO2 value
), so as to achie-
ve a value of 9.4% for G20 and 10.7% for G30-G31.
CO2 ADJUSTMENT AT MINIMUM OUTPUT
- Press the “
MODE
” and “
-
” buttons together for 5s.
The boiler will operate at minimum output showing "L"
on the display, followed by the outlet temperature.
- Adjust the CO2 using a screwdriver on the adjustment
screw (3) located on the fan assembly (
turning anti-
clockwise decreases the CO2 value
), so as to achie-
ve a value of 8.4% for G20 and 8.7% for G30-G31.
CHECKING THE CALIBRATION
Press the "MODE" and "+" buttons together for 5s and
check the max CO2 value (9.4% for G20 and 10.7% for
G30-G31). Then press the "MODE" and "-" buttons for 5s
and check the min CO2 value (8.4% for G20 and 8.7%
for G30-G31).
After having completed the checks:
- Stop the chimney sweep function by pressing
“
MEMO
”
- Adjust the thermostat so as to stop the boiler
- Remove the analyser probe and carefully retighten the
cap (1).
b
The adjustments at maximum and minimum out-
put must be carried out in the sequence descri-
bed, and only by Vokera Ltd or personnel autho-
rised by Vokera.
ADJUSTMENTS
Summary of Contents for CONDEXA PRO 100 S
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