Recording Gas Parameters; Check The System Equipment Level - Buderus Logano plus GB402 Installation And Maintenance Instructions For Contractors

▶ Check the new pipe section, including the seal at the gas train, for
external leaks.
The test pressure on the gas train inlet must be no higher than
150 mbar.
If a leak is discovered during this test, all connections
must be checked using a foaming agent. The agent must
be approved for gas tightness testing.
▶ Never allow the agent to come in contact with
electrical cables.
▶ Confirm in the commissioning report that the tightness test has been
carried out.
7.3

Recording gas parameters

Ask your gas supplier to advise you of the gas parameters (Wobbe index
and calorific value) and record these in the commissioning report
( Chapter 7.18, page 31).
If the boiler is to be replaced in existing systems:
▶ Consult gas suppliers to ensure that the nominal gas
pressure according to table 6 page 10
(country-specific gas category and supply pressures)
is adhered to.
Country
AT, BE, CH, CZ, DE, DK, EE,
ES, FR, GB, HR, HU, IE, IT, LT,
LU, LV, PL, PT, RO, RS, RU,
SI, SK, TR, UA
DE, FR
NL
Table 11 Factory settings
Logano plus GB402 – 6 720 820 700 (2018/01)
Gas type Factory settings
Natural gas group H (G20) Factory-set ready for use.
The gas train is adjusted and sealed.
Natural gas group E (G20)
Upper Wobbe index for 15 °C, 1013 mbar:
Subarea Es of natural gas
group E (G20) • Set to 14.1 kWh/m
• Applicable for 11.4 to 15.2 kWh/m
Upper Wobbe index for 0 °C, 1013 mbar:
• Set to 14.9 kWh/m
• Applicable for 12.0 to 16.1 kWh/m
(Natural gas group "H in accordance with DVGW Code of Practice G 260" falls within
Natural gas group "E in accordance with BS EN 437")
Natural gas group LL Factory-set ready for use.
The gas train is adjusted and sealed.
Subarea Ei of natural gas
group E Upper Wobbe index for 15 °C, 1013 mbar:
• Set to 12.1 kWh/m
• Applicable for 11.4 to 12.4 kWh/m
Upper Wobbe index for 0 °C, 1013 mbar:
• Set to 12.8 kWh/m
• Applicable for 12.0 to 13.1 kWh/m
(Natural gas group "L in accordance with DVGW Code of Practice G 260" falls within
Natural gas group "LL in accordance with BS EN 437")
Natural gas group L (G25) Factory-set ready for use.
The gas train is adjusted and sealed.
Upper Wobbe index for 15 °C, 1013 mbar:
• Set to 11.5 kWh/m
• Applicable for 10.9 to 12.4 kWh/m
Upper Wobbe index for 0 °C, 1013 mbar:
• Set to 12.2 kWh/m
• Applicable for 11.5 to 13.1 kWh/m
7.4

Check the system equipment level

The burner is supplied ready for use with a particular gas group or
subarea of a gas group as per the specifications of the delivery. This gas
group or its subarea must be present in the supply area. If you discover
that the boiler has been ordered with the wrong setting, the appliance
must be converted and the data plate updated accordingly.
▶ Check with the relevant gas supplier which gas group or subarea is
supplied.
▶ Compare the actual supply with the details indicated on the appliance.
▶ If necessary, affix the label [2] (supplied with the boiler) that
corresponds to the supply over the appropriate area on the data
plate [1] (on the back panel) and set the gas/air ratio within
commissioning ( Chapter 7.10).
Fig. 27 Updating the type plate
3
3
3
3
3
3
3
3
3
3
3
3
Start up the heating system 7
25