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(Art. 3 para. 2 let. b)
1The provisions of this Annex apply to combustion installations which are used for the following purposes:
2They do not apply to combustion installations in which products are treated by direct contact with furnace flue gases.
In combustion installations as specified in Number 1, only fuels as specified in Annex 5 shall be burned.
Periodic measurements in accordance with Article 13 paragraph 3 are not required for the following combustion installations:
1For each individual installation, emissions shall be measured under steady state conditions and in the load ranges which are relevant for assessment. In general, these are at least the highest and the lowest load point at which the installation is operated under standard operating conditions.
2For installations operated with soot blowing or similar cleaning processes, dust emissions shall be measured and assessed over a half-hour period. Measurement must include the cleaning phase.
1If several individual installations form a single operating unit, then limitation of emission for each individual installation is determined by the rated thermal input (Annex 1 Number 24) of the entire operating unit (total rated thermal input).
2The total rated thermal input is the sum of the rated thermal inputs of all the individual installations which make up the operating unit.
3Where two or more individual installations are operated in an operating unit in order to cover a variable heat or steam requirement in changing constellations, the rated thermal inputs of the individual installations shall normally form the basis for specifying the emission limits.
1Emissions from combustion installations operating on «extra light» heating oil must not exceed the following limit values:
| Combustion installations for «extra light» heating oil | |
|---|---|
| – Reference value: The limit values for gaseous pollutants are based on a flue gas oxygen content of | 3% (v/v) |
| – Smoke number | 1 |
| – Carbon monoxide (CO) | 80 mg/m3 |
| – Nitrogen oxides (NO | |
| a. luminous radiant and tube radiant heaters | 200 mg/m3 |
| b. installations with a heating medium temperature of up to 110 °C: | 150 mg/m3 |
| c. other installations | 120 mg/m3 |
| – Ammonia and ammonium compounds, expressed as ammonia1 | 30 mg/m3 |
| Note: 1 This emission limitation requirement is only relevant for combustion installations fitted with a denitrification system. |
2Emissions of sulphur oxides are limited by the maximum sulphur content specified in Annex 5 Number 11. The emission limitation requirement specified for sulphur oxides in Annex 1 Number 6 does not apply.
3In derogation from paragraph 1, in the case of installations with a rated thermal input of over 300 MW, emissions of nitrogen oxides, expressed as nitrogen dioxide, must not exceed 100 mg/m3.
1The authorities may specify less stringent limit values for combustion installations with a heating medium temperature of more than 150 °C in cases where compliance with the limit value of 150 mg/m3specified for nitrogen oxides in Number 411 is not technically or operationally feasible, or is economically unacceptable. However, emissions of nitrogen oxides, expressed as nitrogen dioxide, must not exceed 250 mg/m3.
2and3…
1The flue gas losses from furnaces and boilers must not exceed the following limit values:
1. during first-stage operation 6 %
2. during second-stage operation 8 %
1bisThe flue gas losses from boilers used to heat rooms or water commissioned from 1 January 2019 must not exceed 4 per cent.
2The authorities may specify less stringent limit values for furnaces and boilers where the shut-off temperature of the safety temperature limiter exceeds 110 °C and where compliance with the requirements specified in paragraph 1 is not technically or operationally feasible, or is economically unacceptable.
«Euro extra-light» heating oil may not be used in installations or operating units that have a rated thermal input of less than 5 MW for this thermal fuel.
1Emissions from combustion installations operating on «medium» or «heavy» fuel oil must not exceed the following limit values:
| Rated thermal input | |||||
|---|---|---|---|---|---|
| over 5 MW up to 50 MW | over 50 MW up to 100 MW | over 100 MW up to 300 MW | over 300 MW | ||
| «Medium» and «heavy» fuel oil | |||||
| – Reference value: | |||||
| The limit values are based on a flue gas oxygen content of | % vol | 3 | 3 | 3 | 3 |
| – Total solids: | |||||
| For heating oils with a sulphur content not exceeding 1 % by mass: | mg/m3 | 80 | 10 | 10 | 10 |
| For other heating oils | mg/m3 | 50 | 10 | 10 | 10 |
| – Carbon monoxide (CO) | mg/m3 | 170 | 170 | 170 | 170 |
| – Sulphur oxides (SO | mg/m3 | 1700 | 350 | 200 | 150 |
| – Nitrogen oxides (NO | mg/m3 | 150 | 150 | 150 | 100 |
| – Ammonia and ammonia compounds, expressed as ammonia | mg/m3 | 30 | 30 | 30 | 30 |
2The emission limit value of 1700 mg/m3for sulphur oxides shall be deemed to be met if heating oil with a sulphur content not exceeding 1 % by mass is used.
«Medium» and «heavy» fuel oil must not be used in installations or operating units which have a rated thermal input of less than 5 MW for these fuels.
1Emissions from combustion installations which operate on coal, coal briquettes or coke must not exceed the following limit values:
| Rated thermal input | |||||||
|---|---|---|---|---|---|---|---|
| up to 70 kW | over 70 kW up to 500 kW | over 500 kW up to 1 MW | over 1 MW up to 10 MW | over 10 MW up to 100 MW | over 100 MW | ||
| Coal, coal briquettes, coke | |||||||
| – Reference value: | |||||||
| The limit values are based on a flue gas oxygen content of | % (v/v) | 7 | 7 | 7 | 7 | 7 | 6 |
| – Total solids: | mg/m3 | 100 | 50 | 20 | 20 | 10 | 10 |
| – Carbon monoxide (CO) | mg/m3 | 2500 | 1000 | 1000 | 150 | 150 | 150 |
| – Sulphur oxides (SO | |||||||
| – fluidised bed installations | mg/m3 | – | – | – | 350 | 350 | 200 |
| – other coal-fired installations | mg/m3 | – | – | – | 1300 | 350 | 150 |
| – other installations | mg/m3 | – | – | – | 1000 | 350 | 150 |
| – Nitrogen oxides (NO | mg/m3 | – | – | – | 500 | 200 | 150 |
| – Ammonia and ammonium compounds, expressed as ammonia1 | mg/m3 | 30 | 30 | 30 | 30 | 30 | 30 |
| Notes: – A dash in the table means that no limitations are specified either in Annex 3 or in Annex 1. 1 This emission limitation requirement is only relevant for combustion installations fitted with a denitrification system. |
2The authorities shall specify preventive emission limitation requirements for inorganic substances mainly in the form of dust and also for chlorine and fluorine compounds in accordance with Article 4; Annex 1 Number 5 and the emission limitation requirements specified for chlorine and fluorine compounds in Annex 1 Number 6 do not apply.
3In derogation from paragraph 1, a carbon monoxide emission limit value of 4000 mg/m3applies to central heating and residential cookers.
The requirements specified in Number 524 apply by analogy to installations in terms of Number 22 letter e and boilers with a rated thermal input of up to 70 kW that are operated with coal combustibles in accordance with Number 513.
In combustion installations with a rated thermal input of less than 1 MW, only coal, coal briquettes or coke with a sulphur content not exceeding 1 % (m/m) may be used.
1In wood-fired installations, only wood fuels as specified in Annex 5 Number 31 paragraph 1 may be used which are suitable for combustion in these installations on account of the fuel type, quality and moisture.
2In addition, only wood as specified in Annex 5 Number 31 paragraph 1 letters a, b or d number 1 may be used in hand-stoked combustion installations with a rated thermal input of up to 40 kW and in open fires.
3In automatic combustion installations with a rated thermal input of up to 40 kW, only wood fuels as specified in Annex 5 Number 31 paragraph 1 letters a, b or d number 1 may be used.
1Emissions from combustion installations operating on wood fuels as specified in Annex 5 Number 31 paragraph 1 must not exceed the following limit values:
| Rated thermal input | ||||||
|---|---|---|---|---|---|---|
| up to 70 kW | over 70 kW up to 500 kW | over 500 kW up to 1 MW | over 1 MW up to 10 MW | over 10 MW | ||
| Wood fuels | ||||||
| – Reference value: | ||||||
| The limit values are based on a flue gas oxygen content of | % (v/v) | 13 | 13 | 13 | 11 | 11 |
| – For wood fuels as specified in Annex 5 No 31 para. 1 let. a, b or d Number 1 | ||||||
| – for central heating and residential cookers and commercially used baking ovens: | ||||||
| – Total solids | mg/m3 | 100 | 50 | – | – | – |
| – Carbon monoxide (CO) | mg/m3 | 4000 | 4000 | – | – | – |
| – for hand-stoked local space heaters1and boilers: | ||||||
| – Total solids: | mg/m3 | 100 | 50a | 20 | 20 | 10 |
| – Carbon monoxide (CO): | mg/m3 | 2500 | 500 | – | – | – |
| – for automatically stoked hot water and steam boilers: | ||||||
| – Total solids | mg/m3 | 50 | 50 | 20 | 20 | 10 |
| – Carbon monoxide (CO) | mg/m3 | 1000 | 500 | 500 | 250 | 150 |
| – for wood fuels as specified in Annex 5 Number 31 paragraph 1 letters c or d number 2 | ||||||
| – Total solids | mg/m3 | 50 | 50 | 20 | 20 | 10 |
| – Carbon monoxide (CO) | mg/m3 | 1000 | 500 | 500 | 250 | 150 |
| – Nitrogen oxides (NO | mg/m3 | c | c | c | c | 150 |
| – Gaseous organic substances, expressed as total carbon (C) | mg/m3 | – | – | – | – | 50 |
| – Ammonia and ammonium compounds, expressed as ammonia3 | mg/m3 | – | – | – | 30 | 30 |
| Notes: – A dash in the table means that no limitations are specified either in Annex 3 or in Annex 1. 1 In the case of one off basic stoves as specified in SN EN 15544 (one off tiled/mortared stoves – dimensioning)1the emission limits for solids and CO apply up to 70 kW irrespective of their rated thermal input. 2 Does not apply to central heating cookers. 3 See the limit value specified for nitrogen oxides in Annex 1 Number 6. 4 This emission limitation requirement is only relevant for combustion installations fitted with a denitrification system. |
2Emissions of sulphur oxides, expressed as sulphur dioxide and based on a flue gas oxygen content of 6 %, must not exceed the following values:
3In derogation from paragraph 1, emissions of nitrogen oxides, expressed as nitrogen dioxide and based on a flue gas oxygen content of 6 %, must not exceed the following values:
4The authorities shall specify preventive emission limitation requirements for chlorine compounds and for organic substances in gaseous, vaporous or particulate form in accordance with Article 4; the emission limitation requirements specified for chlorine compounds in Annex 1 Number 6 and those specified for organic substances in Annex 1 Number 7 do not apply.
5The foregoing is without prejudice to the special requirements for installations specified in Number 523.
Hand-stoked boilers with a rated heat output of up to 500 kW must be fitted with a heat accumulator with a volume of at least 12 litres per litre of the thermal fuel storage bin. The volume must not be less than 55 litres per kW of rated heat output.
2Automatic boilers with a rated heat output of up to 500 kW must be fitted with a heat accumulator with a volume of at least 25 litres per kW of rated heat output. The foregoing does not apply to wood pellet boilers with a rated thermal input of up to 70 kW.
2bisIn the case of boilers with a rated heat output of over 500 kW, the authority shall specify the accumulator volume. If these boilers are used to heat rooms or water, they must be fitted with a heat accumulator with a volume of at least 25 litres per kW of rated heat output.
3In derogation from paragraphs 1, 2 and 2bis, the authority may specify a smaller accumulator volume if.
1Series-produced local space heaters in accordance with Number 22 letter f are exempted from an acceptance measurement provided that it is confirmed by means of a declaration of conformity under Article 7 of the Energy Efficiency Ordinance of 1 November 20173(EnEO) that the installation meets the requirements set out in Annex 1.19 EnEO.
2Local space heaters in accordance with Number 22 letter f that are produced by craftsmen are exempted from an acceptance measurement if:
3Historic stoves that are worthy of protection up to volume of 0.4 m3and cookers produced by craftsmen are also exempted from the acceptance measurement if they were built according to the recognised rules of combustion technology or are equipped with a dust removal system in accordance with paragraph 2 letter b.
4In the case of boilers with a rated thermal input of up to 70 kW that are operated with wood fuels as specified in Annex 5 Number 31 paragraph 1 letters a, b or d letter 1, solid emissions need not be measured in the regular control of combustion installations.
5The FOEN shall recommend suitable measurement and assessment methods.
6In the case of local space heaters that under Number 22 letter f do not require regular measurements, the authority shall in particular check combustion residues and the condition of the installation. It shall on the first occasion provide information on how to use the installation properly and on how to use and store thermal fuels.
In the case of dust removal systems for installations with a rated thermal input of over 70 kW, uptime must normally amount to at least 90 per cent. Uptime is determined on the basis of the installation’s service life.
Emissions from combustion installations operating on gaseous fuels must not exceed the following limit values:
| Combustion installations for gaseous fuels | |
|---|---|
| – Reference value: | |
| The limit values are based on a flue gas oxygen content of | 3% (v/v) |
| – Carbon monoxide (CO): | 100 mg/m3 |
| – Nitrogen oxides (NO | |
| a. luminous radiant and tube radiant heaters | 200 mg/m3 |
| b. installations with a heating medium temperature of over 110 °C | 110 mg/m3 |
| c. Other installations | 80 mg/m3 |
| – Ammonia and ammonium compounds, expressed as ammonia1 | 30 mg/m3 |
| 1 Note: This emission limitation requirement is only relevant for combustion installations fitted with a denitrification system. |
2In derogation from paragraph 1, emissions from installations of over 50 MW must not exceed the following values:
a. For forced draught burners with single-stage operation
and for gas burners 7 % 1. when operated using gaseous fuels as specified
in Annex 5 Number 41 paragraph 1 letters b–e 10 mg/m3
2. when operated using gaseous fuels as specified
in Annex 5 Number 41 paragraph 1 letter a 5 mg/m3
b. For forced draught burners with two-stage operation:
1. when operated using gaseous fuels as specified
in Annex 5 Number 41 paragraph 1 letters a and c–e 35 mg/m3
2. when operated using gaseous fuels as specified
in Annex 5 Number 41 paragraph 1 letter b 5 mg/m3
c. Nitrogen oxides (nitrogen monoxide and nitrogen dioxide),
expressed as nitrogen dioxide 100 mg/m3
1The authorities may specify less stringent limit values for combustion installations with a heating medium temperature of more than 150 °C in cases where compliance with the limit value of 110 mg/m3specified for nitrogen oxides in Number 61 is not technically or operationally feasible, or is economically unacceptable. However, emissions of nitrogen oxides, expressed as nitrogen dioxide, must not exceed 200 mg/m3.
2Notwithstanding the provisions of Number 61, the limit values for nitrogen oxides specified in Annex 3 Number 411 apply to gas-fired installations operating on gaseous fuels as specified in Annex 5 Number 41 letters b, d and e.
3The emission limit values specified for nitrogen oxides in Annex 1 Number 6 and in Annex 3 Number 61 do not apply to gas-fired instantaneous water heaters and gas-fired storage water heaters; preventive emission control measures shall not be ordered in accordance with Article 4.
1The flue gas losses from furnaces and boilers must not exceed the following limit values:
2. during second-stage operation 8 %
1bisFlue gas losses from boilers used to heat rooms or water that are commissioned from 1 January 2019 must not exceed 4 per cent.
2The authorities may specify less stringent limit values for furnaces and boilers where the shut-off temperature of the safety temperature limiter exceeds 110 °C and where compliance with the requirements specified in paragraph 1 is not technically or operationally feasible, or is economically unacceptable.
1The requirements specified in Number 41 apply to combustion installations which operate on liquid fuels as specified in Annex 5 Number 13.
2Fuels as specified in Annex 5 Number 13 may only be used in installations with a rated thermal input of less than 350 kW if:
If a single installation operates alternately on different kinds of fuel, the emission limitation requirements are determined by the fuel used in each case.
1If different kinds of fuel are burned at the same time in a single installation, the emission concentrations must not exceed the composite limit value.
2The composite limit value is calculated according to the following formula:
Gm=G1×E1Etot+G2×E2(21−B1)Etot(21−B2)+⋯+Gn×En(21−B1)Etot(21−Bn)
where:
Gm = composite limit value based on the oxygen content B1
G1, G2… Gn = emission limit value for the various fuels4
E1, E2… En = energy supplied per hour by the individual fuels
Etot = E1+ E2+ … En
B1, B2… Bn = reference value (oxygen content on which the emission limit value for the first, second and subsequent fuels is based)
3To calculate the relevant sulphur emission ratio, the method described in paragraph 2 shall be adoptedmutatis mutandis .
This standard may be viewed free of charge or obtained for a fee from the Swiss Association for Standardisation, Sulzerallee 70, 8404 Winterthur; www.snv.ch. ↩
This standard may be viewed free of charge or obtained for a fee from the Swiss Association for Standardisation, Sulzerallee 70, 8404 Winterthur; www.snv.ch. ↩
SR 730.02 ↩
Note : The following shall be taken as the emission limit values for sulphur dioxides: a. for «extra light» heating oil: G = 330 mg/m3, based on a flue gas oxygen content of 3% (v/v); b. for gas: G = 38 mg/m3, based on a flue gas oxygen content of 3% (v/v). ↩
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