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15. Maintenance
15 Maintenance
15.1 General
The boiler requires little maintenance if it is correctly set. The boiler only requires an annual check and cleaning if necessary.
15.2 Inspection
The annual inspection of the boiler can be restricted to the following
operations:
- Measure the combustion and check the operation
- Clean the siphon
- Checking condensates discharge
- Checking the ignition electrode and the ionization sensor
15.2.1 Checking the combustion in the boiler
This check can be carried out by measuring the CO
the combusted gas evacuation pipe at the measurement point.
All countries except Belgium:
Boilers
Maximum output
Natural gas
DTGE130-
35,
about 4600
DTG130-35
DTG130-45
about 5200
DTG130-65
about 5200
DTG130-90
about 6200
DTG130-115
about 7000
Correct the burner setting to ±0.3% CO
For Belgium:
Boilers
Maximum output
Natural gas
DTGE130-
35,
about 4600
DTG130-35
DTG130-45
about 5200
DTG130-65
about 5200
DTG130-90
about 6200
DTG130-115
about 7000
* Approximate CO
content: 7.5%
2
The temperature of the combusted gases can also be measured at the measurement point in the evacuation pipe. The temperature of the
combusted gas must not exceed the temperature of the return water by more than 30 °C. If it turns out that boiler combustion has not been
optimised after this check, clean the installation.
70
/O
content in
2
2
Fan speed
rpm
Minimum
output
Propane
about 4200
about 1100
about 4600
about 1100
about 4600
about 1200
about 6100
about 1200
about 6700
about 1300
; ±0.2% O
.
2
2
Fan speed
rpm
Minimum
output
Propane
about 4200
about 1100*
about 4600
about 1100
about 4600
about 1200
about 6100
about 1200
about 6700
about 1300
DTG(E)130 - 35/45/65/90/115 Eco.NOxPlus
- Set the gap between the ignition electrodes: 3 to 4 mm
- Check the concentric flue gas evacuation and combustive air inlet
pipes
- Checking the hydraulic pressure (minimum 0.8 bar). Add water to the
installation if necessary (Recommended pressure: 1.5 bar)
- Check the ionization current: 4 to 9 µA.
Bring the boiler to maximum output up to a water temperature of
around 70°C.
Start-up output
Natural gas
Propane
2500
2500
2500
2500
2500
2500
2500
2000
2500
2000
Start-up output
Natural gas
Propane
2500
2500
2500
2500
2500
2500
2500
2000
2500
2000
Approximate O
content: 7.3%
2
Natural gas G20/G25
O
CO
2
2
%
%
4.8/4.8 ± 0.2
9.0/9.0 ± 0.3
4.8/4.8 ± 0.2
9.0/9.0 ± 0.3
4.8/4.8 ± 0.2
9.0/9.0 ± 0.3
3.9/3.9 ± 0.2
9.5/9.5 ± 0.3
4.8/3.9 ± 0.2
9.0/9.5 ± 0.3
Natural gas G20/G25
O
CO
2
2
%
%
4.8/* ± 0.2
9.0/* ± 0.3
4.8/* ± 0.2
9.0/* ± 0.3
4.8/* ± 0.2
9.0/* ± 0.3
3.9/3.9 ± 0.2
9.5/9.5 ± 0.3
4.8/3.9 ± 0.2
9.0/9.5 ± 0.3
15/02/2011 - 300014279-001-J
Propane
O
CO
2
2
%
%
4.8 ± 0.2 10.7 ± 0.3
4.8 ± 0.2 10.7 ± 0.3
4.8 ± 0.2 10.7 ± 0.3
4.8 ± 0.2 10.7 ± 0.3
5.7 ± 1.0 10.0 ± 0.7
Propane
O
CO
2
2
%
%
4.8 ± 0.2 10.7 ± 0.3
4.8 ± 0.2 10.7 ± 0.3
4.8 ± 0.2 10.7 ± 0.3
4.8 ± 0.2 10.7 ± 0.3
5.7 ± 1.0 10.0 ± 0.7
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