DeDietrich G25 Manual de Serviço descarregar pdf (Página 70)

DTG(E)130 - 35/45/65/90/115 Eco.NOxPlus 15/02/2011 - 300014279-001-J

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

- 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.

15.2.1 Checking the combustion in the boiler

This check can be carried out by measuring the CO

content in

the combusted gas evacuation pipe at the measurement point

All countries except Belgium:

Bring the boiler to maximum output up to a water temperature of

around 70°C

Correct the burner setting to ±0.3% CO

; ±0.2% O

For Belgium:

* Approximate CO

content: 7.5% Approximate O

content: 7.3%

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.

Boilers

Fan speed Natural gas G20/G25 Propane

rpm

Maximum output

Minimum

output

Start-up output

% % % %

Natural gas

Propane

Natural gas

Propane

DTGE130-

35,

DTG130-35

about 4600 about 4200 about 1100

2500 2500 4.8/4.8 ± 0.2 9.0/9.0 ± 0.3 4.8 ± 0.2 10.7 ± 0.3

DTG130-45

about 5200 about 4600 about 1100

2500 2500 4.8/4.8 ± 0.2 9.0/9.0 ± 0.3 4.8 ± 0.2 10.7 ± 0.3

DTG130-65

about 5200 about 4600 about 1200

2500 2500 4.8/4.8 ± 0.2 9.0/9.0 ± 0.3 4.8 ± 0.2 10.7 ± 0.3

DTG130-90

about 6200 about 6100 about 1200

2500 2000 3.9/3.9 ± 0.2 9.5/9.5 ± 0.3 4.8 ± 0.2 10.7 ± 0.3

DTG130-115

about 7000 about 6700 about 1300

2500 2000 4.8/3.9 ± 0.2 9.0/9.5 ± 0.3 5.7 ± 1.0 10.0 ± 0.7

Boilers

Fan speed Natural gas G20/G25 Propane

rpm

Maximum output

Minimum

output

Start-up output

% % % %

Natural gas

Propane

Natural gas

Propane

DTGE130-

35,

DTG130-35

about 4600 about 4200 about 1100*

2500 2500 4.8/* ± 0.2 9.0/* ± 0.3 4.8 ± 0.2 10.7 ± 0.3

DTG130-45

about 5200 about 4600 about 1100

2500 2500 4.8/* ± 0.2 9.0/* ± 0.3 4.8 ± 0.2 10.7 ± 0.3

DTG130-65

about 5200 about 4600 about 1200

2500 2500 4.8/* ± 0.2 9.0/* ± 0.3 4.8 ± 0.2 10.7 ± 0.3

DTG130-90

about 6200 about 6100 about 1200

2500 2000 3.9/3.9 ± 0.2 9.5/9.5 ± 0.3 4.8 ± 0.2 10.7 ± 0.3

DTG130-115

about 7000 about 6700 about 1300

2500 2000 4.8/3.9 ± 0.2 9.0/9.5 ± 0.3 5.7 ± 1.0 10.0 ± 0.7

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DeDietrich G25 Manual de Serviço Página 70

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