n
Checking/setting values O
2
at full load
1. Set the boiler to full load. Press the two
B
keys simultaneously.
The display shows
h3
. The symbol
B
appears.
If an automatic vent cycle is running, it is not possible to
perform these operations.
2. Measure the percentage O
2
in the flue gases (with the cover of the
watertight housing removed).
3. If the measured value is outside of the values given in the table,
correct the gas/air ratio.
Using the adjusting screw A, set the percentage O
2
for the
gas type being used to the nominal value. This should
always be inside the highest and lowest setting limit.
4
Turn the screw A clockwise to obtain a higher O
2
value.
4
Turn the screw A anticlockwise to obtain a lower O
2
value.
4. Check the flame through the flame inspection window.
The flame must not be detached.
Values at full load for G20
(Gas H)
O
2
(%)
CO
2
(%)
(Ireland)
CALORA TOWER GAS 15S
EX
4,7 - 5,2
(1)
8,8
(1)
- 9,1
CALORA TOWER GAS 25S
EX
Austria: 5,2 - 5,7
(1)
Other countries: 4,7 -
5,2
(1)
8,8
(1)
- 9,1
CALORA TOWER GAS 35S
EX
Austria: 5,2 - 5,7
(1)
Other countries: 4,3 -
4,8
(1)
9,0
(1)
- 9,3
(1) Nominal value
Values at full load for G25 (Gas L) O
2
(%)
CALORA TOWER GAS 15S EX
4,4 - 4,9
(1)
CALORA TOWER GAS 25S EX
4,4 - 4,9
(1)
CALORA TOWER GAS 35S EX
4,1 - 4,6
(1)
(1) Nominal value
Values at full load for G27 (Gas Lw) O
2
(%)
CALORA TOWER GAS 15S EX
4,2 - 4,8
(1)
CALORA TOWER GAS 25S EX
4,2 - 4,8
(1)
CALORA TOWER GAS 35S EX
4,0 - 4,6
(1)
(1) Nominal value
T001997-A
rpm
kWµA
± 30
l/min
bar
Psi
St
ºC
ºCºFh
A
T000932-A
CALORA TOWER GAS 15S EX CALORA TOWER GAS 25S EX
CALORA TOWER GAS 35S EX
6. Commissioning
22/04/2016 - 300026141-001-07
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