Gas Cooking AppliancesHints for Gas Conversion

ESSE-N / A.S. October 2004

2

Classification of Gasses

1st family : town gas, rarely used nowadaysGroup a

2nd family : natural gasGroup H (high Wobbe index)Group L (low Wobbe index)Group E (new group, includíng H and part of L)

3rd family : LPG (= Liquefied Petroleum Gas)Group B/P (butane-propane mix)Group B (butan)Group P (Propan)

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Classification of Gasses

Wobbe index ranges for different gas families

min max 1st Family - group a 22.4 24.8

2nd Family - group H - group L - group E

39.145.739.140.9

54.754.744.854.7

3rd Family - group B/P - group P - group B

72.972.972.981.8

87.387.376.887.3

Gas familiesand groups

Upper Wobbe indexat 15°C and 1013.25 mbar

[MJ/m³]

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Appliance Categories

Category I : appliance suitable for only one gas familyCategory II : appliance suitable for 2 gas familiesCategory III : appliance suitable for all (3) gas families

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Nominal Power

When converting the appliance for another type or pressure of gas it is essential not to exceed the nominal power of the burnerNominal power = volumetric flow rate × heat value (for practical reasons, calorific value can‘t be used in cookingappliances )

higher heat value (to be exact higher Wobbe index)or higher pressurehave to be compensated by a smaller cross section

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Gas Nozzles

The nozzle is not cylindrical but has a longitudinal profile meant to optimize combustion and noise

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Electrolux Burners

Main nozzle in primary air

chamber

Burner Body

Ignition

Safetythermocouple

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Electrolux Burners

Burner Lid

Burner Body

Burner Crown

Safetythermocouple

9

Electrolux Burners

Primary air from above, not adjustable

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Electrolux Burners

Wok rapid semirapid auxiliarymain nozzle H [x 0.01 mm] 146 119 96 70

DKK: main nozzle L [x 0.01 mm] 150 133 106 74

ZO: main nozzle LL [x 0.01 mm] 153 133 106 74

DKK: by-pass nozzle [x 0.01 mm] 44 39 30 25ZO: by-pass nozzle [x 0.01 mm] 56 40 32 28 ON APPLIANCES ADJUSTABLE TO LPG 30mb

ZO: by-pass nozzle [x 0.01 mm] 45 35 28 23 ON APPLIANCES ADJUSTABLE TO LPG 50mb

DKK: max. power [kW] 3.8 3 1.9 1ZO: max. power [kW] 4 3 2 1DKK: min. power [kW] 0.9 0.55 0.45 0.35ZO: min. power [kW] 1.2 0.65 0.45 0.33

main nozzle [x 0.01 mm] 98 86 71 50DKK: by-pass nozzle [x 0.01 mm] 44 39 30 25ZO: by-pass nozzle [x 0.01 mm] 56 40 32 28

power [kW] 4 2.8 2 1DKK main nozzle [x 0.01 mm] 88 75 60 43ZO main nozzle [x 0.01 mm] 92 75 60 43

DKK: by-pass nozzle [x 0.01 mm] 39 31 27 23ZO: by-pass nozzle [x 0.01 mm] 45 35 28 23

DKK: power [kW] 4 2.8 2 1ZO: power [kW] 4 3 2 1

130 104 74 58126 / 46 102 72 55

171 134 126 / 95 126 / 95gasket diameter [mm]

burner diameter [mm]lid diameter [mm]

LPG50 mbar

Burner type

natural gas (H/L)20 mbar

LPG30 mbar

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Conversion to Another Gas

First checkappliance category for the respective country conversion instructions in the user manual

to decide whether the required conversion is technically possibleand legally permitted in the respective country

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Conversion to Another Gas

e.g. conversion to LPG (30 or 50 mbar) technically possibleallowed in D, I, GB, FR, but not in NL

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Umstellung auf anderes Gas

To change the type of gas it is only necessary:to change the main nozzles to adjust the by-pass in order to obtain a stable flame on the lowest settingonly for LPG 50 mbar it is necessary to change the by-pass toostick conversion label to appliance

primary air adjustment is neither required nor possible on the Electrolux burners

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Conversion to Another Gas

Change main nozzle Adjust by-pass(replace only in special cases required by instruction)

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Single Nozzles with Spare Part Numbers

auxiliary burner semirapid burner rapid burner 3-crown (Wok) burner

natural gas H18-20 mbar

70354 400 413 / 2

96354 400 412 / 4

119354 400 404 / 1

146354 401 312 / 5

natural gas L 25 mbar (NL)

71354 400 436 / 3

100354 400 435 / 5

124354 400 434 / 8

147354 401 311 / 7

DKK: 150354 401 316 / 6

ZO: 153354 401 323 / 2

LPG 30 mbar 50354 400 071 / 8

71354 400 036 / 1

86354 400 432 / 2

98354 401 310 / 9

DKK: 88354 400 003 / 1

ZO: 92354 401 324 / 0

LPG 50 mbar 43354 400 080 / 9

60354 400 081 / 7

75354 400 410 / 8

133354 400 415 / 7

106354 400 416 / 5

74354 400 417 / 3

natural gas LL 20 mbar

(only D, local)

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Kits

Most cases can be solved by using the following kits:For conversion to natural gas H or E, 18-20 mbar:

5026 73 42-00 / 9: 1 x 0.70; 2 x 0.96; 2 x 1.195027 36 08-00 / 5: 1 x 0.70; 3 x 0.96; 1 x 1.19; 1 x 1.46; 1 x 1.13*

For conversion to LPG 30 mbar:5027 36 09-00 / 3: 1 x 0.50; 3 x 0.71; 1 x 0.86; 1 x 0.985026 94 49-00 / 0: 1 x 0.50; 2 x 0.71; 1 x 0.86; 1 x 0.83*

For conversion to LPG 50 mbar:5027 66 33-00 / 0: 1 x 0.43; 3 x 0.60; 1 x 0.75; 1 x 0.925026 93 42-00 / 7: 1 x 0.43; 2 x 0.60; 1 x 0.75; 1 x 0.76*

* nozzle for oven burner