EnEV_2009_english version un-ufficial

8/7/2019 EnEV_2009_english version un-ufficial

1/66


2/66

2

22.6.1992, pg. 17, L 195 pg. 32), last amended by Directive 2005/32/EC of the European Parliament and Councilof July 6, 2005 (OJ L 191 of 22.7.2005, pg. 29).


3/66


4/66

4

Part 1

General Regulations

Section 1Scope of application

(1) This regulation applies to

1. buildings, in so far as they are heated or cooled using energy, and

2. systems and equipment serving the heating, cooling, air handling and lighting technology

and the hot water supply of buildings in accordance with No. 1.

The use of energy for production processes in buildings is not subject to this regulation.(2) With the exception of sections 12 and 13, this regulation does not apply to

1. commercial buildings used primarily for the breeding or keeping of animals,

2. commercial buildings which must be large-scale and kept open for long periods in

accordance with the purpose of their use,

3. underground constructions,

4. installations under glass and growing rooms for the breeding, propagation and sale of plants,

5. air halls and tents,

6. buildings , which are intended to be repeatedly set up and taken down and temporary

buildings with a scheduled service life of up to two years,

7. buildings which are dedicated to church services or other religious purposes,

8. residential buildings which are intended to be used less than four months a year and

9. other craftwork, agricultural, commercial and industrial commercial buildings which are

heated in accordance with their purpose to an indoor temperature of less than 12 degrees

Celsius or are heated for less than four months a year and cooled for less than two months

a year.

Section 13 alone is to be applied to components of plant systems that are not spatially

connected to buildings in accordance with paragraph 1 Sentence 1 No. 1.


5/66

5

Section 2

Definitions

Within the context of this regulation

1. residential buildings are buildings, which according to their purpose are used primarily

for living, including residential, retirement and nursing homes and similar facilities,

2. commercial buildings are buildings, which do not fall under No. 1,

3. small buildings are buildings with no more than 50 square metres of floor space,

3a. historical buildings are buildings or building complexes protected under state law,

4. heated spaces are those spaces which are heated directly or through connection with

another room on the basis of intended use,

5. cooled spaces are those spaces which are cooled directly or through connection with

another room on the basis of intended use,

6. renewable energies are solar radiation energy, environmental heat, geothermal

energy, hydroelectric power, wind energy and biomass energy,

7. a boiler is a heat-generating device consisting of boiler and burner which serves the

transfer of heat generated by the burning to the heat carrier water,

8. devices are boilers which can be equipped with a burner and burners intended to be used

for the equipping of a boiler,

9. the capacity is the largest heating or cooling capacity in kilowatts established by the

manufacturer and guaranteed to be maintainable in constant operation observing the

given level of efficiency,

10. a low-temperature boiler is a boiler that can be operated continually with an input

temperature of 35 to 40 degrees Celsius and in which, under certain circumstances,

condensation of the water vapour contained in the exhaust gases may occur,

11. a condensing boiler is a boiler which is constructed for the condensation of a large

proportion of the water vapour contained in exhaust gases,

11a. electrical thermal storage systems are heating systems with a power supply that

can be interrupted by energy suppliers, which store heat only in the periods outside

of intermittent operation through resistance heat in a suitable storage medium,


6/66

6

12. living space is the area established in accordance with the German Residential Space

Ordinance (WoFLV) or on the basis

of other statutory provisions or recognised rules of technology for the calculation of

living space,

13. floor space is the floor space which is heated or cooled in accordance with recognised

rules of technology,

14. the building floor space is the area calculated in accordance with Appendix 1 No. 1.3.3,

15. net floor space is the net floor space that is heated or cooled in accordance with

recognised rules of technology ,

Part 2

Buildings to be constructed

Section 3

Requirements for residential buildings

(1) Residential buildings to be constructed are to be designed in such a way that the annual

primary energy demand for heating, hot water preparation, ventilation and cooling does notexceed the value of the annual primary energy demand for a reference building of the

same geometry, building floor space and alignment with the technical reference design

given in Appendix 1 Table 1.

(2) Residential buildings to be constructed are to be designed in such a way that the

maximum levels of the specific transmission heat loss related to the heat transmitting surface

area in accordance with Appendix 1 Table 2 are not exceeded.

(3) The annual primary energy demand is to be calculated according to one of the

procedures stated in Appendix 1 No. 2 for the residential building to be constructed and

the reference building. The residential building to be constructed and the reference

building are to be calculated using the same procedure.

(4) Residential buildings to be constructed are to be designed in such a way that the

requirements for summer thermal insulation in Appendix 1 No. 3 are complied with.


7/66

7

Section 4

Requirements for commercial buildings

(1) Commercial buildings to be constructed are to be designed in such a way that the annual

primary energy demand for heating, hot water preparation, ventilation, cooling and lightinginstallations does not exceed the level of the annual primary energy demand of a reference

building of the same geometry, net floor space, alignment and utilisation, including the

arrangement of the utilisation units to the technical reference design indicated in Appendix 2

Table 1.

(2) Commercial buildings to be constructed are to be designed in such a way that the

maximum levels of the average heat transfer coefficients of the heat-transmitting surface

area in accordance with Appendix 2 Table 2 are not exceeded.

(3) The annual primary energy demand for the commercial buildings to be constructed and

for the reference building is to be calculated according to one of the procedures stated in

Appendix 2 No. 2 or 3. The commercial building to be constructed and the reference building

are to be calculated using the same procedure.

(4) Commercial buildings to be constructed are to be designed in such a way that the

requirements for summer thermal insulation in Appendix 2 No. 4 are complied with.

Section 5

Allowance on electricity from renewable energies

If electricity from renewable energies is used in buildings to be constructed, the

electricity may be deducted from the delivered energy demand in the calculations in

accordance with section 3 paragraph 3 and section 4 paragraph 3, when it is

1. generated in direct spatial relation to the building and

2. used primarily in the building itself with only the surplus energy amount being

fed into a public grid.

The maximum amount of current that may be allowed in accordance with sentence 1 is

that of the calculated power requirement of the respective usage.


8/66

8

Section 6

Impermeability, minimum air exchange

(1) Buildings to be constructed are to be designed in such a way that the heat-transmitted

surface area including the joints is permanently airtight corresponding to the recognised rulesof technology. The joint permeability of outside windows, French windows and skylights

must satisfy the requirements of Appendix 4 No. 1. If impermeability is tested in accordance

with sentences 1 and 2, proof of airtightness can be taken into account in the calculation

required in accordance with section 3 paragraph 3 and section 4 paragraph 3, if the

requirements of Appendix 4 No. 2 are satisfied .

(2) Buildings to be constructed are to be designed in such a way that the minimum air

exchange required for the purposes of health and heating is ensured.

Section 7

Minimum thermal insulation, heat bridges

(1) In buildings to be constructed, components which border on outside, the ground or

building parts with significantly lower interior temperatures are to be designed in such a way

that the requirements of the minimum thermal insulation are satisfied in accordance with the

recognised rules of technology. If, in buildings to be constructed, the neighbouringconstruction in connecting buildings is not protected, the building partition walls must

maintain the minimum thermal insulation in accordance with sentence 1.

(2) Buildings to be constructed are to be designed in such a way that the influence of

constructive heat bridges on the annual heating demand is kept as low as possible in

accordance with recognised rules of technology and the economically justifiable measures in

each individual case.

(3) The remaining influence of the heat bridges in determination of the annual primary

energy demand is to be taken into account as required by the respective calculation

method applied . If equivalence proofs would have been required, these are not required

for heat bridges whose contiguous components show lower heat transfer coefficients

than those used as a basis in the sample solutions of DIN 4108 Supplement 2 : 2006-03.


9/66

9

Section 8

Requirements for small buildings and modular buildings

If the values for heat transfer coefficients of the exterior components stated in Appendix 3 arecomplied with in small buildings, the remaining requirements of this Part are considered

fulfilled. Sentence 1 is to be applied correspondingly to buildings which are intended to

have a service life of a maximum of five years and are made up of modules each with a

floor space of up to 50 square metres.

Part 3

Existing Buildings and Systems

Section 9

Modification, extension and expansion of buildings

(1) Modifications within the context of Appendix 3 Nos. 1 to 6 in the case of heated or cooled

spaces in buildings are to be designed in such a way that the heat transfer coefficients of the

exterior components concerned as established in Appendix 3 are not exceeded. The

requirements of sentence 1 are considered fulfilled if

1. modified residential buildings overall do not exceed the annual primary energy demand

of the reference building in accordance with section 3 paragraph 1 and the maximum

value of the specific transmission heat loss related to the heat-transmitting surface area

in accordance with Appendix 1 Table 2,

2. modified commercial buildings overall do not exceed the annual primary energy

demand of the reference building in accordance with section 4 paragraph. 1 and the

maximum values of the average heat transfer coefficients of the heat-transmitting

surface area in accordance with Appendix 2 Table 2

by more than 40 percent.

(2) In the cases of paragraph 1 sentence 2, the calculation methods given in section 3

paragraph 3 and section 4 paragraph 3 are to be used as required by sentences 2 and 3 and

section 5 accordingly. If

1. data on the geometric dimensions of buildings is missing, this can be determined by

simplified estimate;


10/66

10

2. energy reference values for existing building and system components are not available,

verified empirical values for building and system components of comparable age groups

can be used;

recognised rules of technology can be used in this connection; compliance with such rules is

assumed if simplifications are used for data collection and the determination of energy

parameters and verified empirical values, which have been published in the Federal Bulletin

(Bundesanzeiger - BAnz) by the German Federal Ministry of Transport, Building and Urban

Affairs (BMVBS) in agreement with the German Federal Ministry of Economics and

Technology (BMWi). When applying the procedure in accordance with section 3 paragraph 3,

the general constraints and stipulations are to be observed in accordance with Appendix 3 No.

8.

(3) Paragraph 1 is not to be applied to modifications of exterior components , if the area of

the modified components affects no more than 10 percent of the total building component

area of the building .

(4) In the extension and expansion of a building by heated or cooled spaces with a minimum

of 15 and a maximum of 50 square metres of contiguous floor space, the relevant external

components are to be designed in such a way that the heat transfer coefficients established in

Appendix 3 are not exceeded.

(5) If, in cases of paragraph 4, the additional contiguous floor space exceeds 50 square

metres, the relevant exterior components are to be designed in such a way that the new section

of the building complies with the regulations for the building to be constructed in accordance

with section 3 or section 4.

Section 10

Retrofitting in systems and buildings

(1) The proprietors of buildings may no longer operate boilers which are filled with liquid

or gaseous fuels and which were installed or set up before October 1, 1978. Sentence 1 is not

applicable if the existing boilers are low temperature or condensing boilers, or to heating

systems whose capacity is less than four kilowatts or more than 400 kilowatts or to boilers in

accordance with section 13 paragraph 3 Nos. 2 to 4.

(2) Proprietors of buildings must ensure that in heating systems, previously

uninsulated, accessible heat distribution and hot water pipes as well as fittings not


11/66


12/66

12

(2) Electrical thermal storage systems installed or set up before January 1, 1990

may not be operated after December 31, 2019. Electrical thermal storage systems

installed or set up after December 31, 1989 may not be operated after expiration of

30 years after installation or setup. If significant components of the electrical

thermal storage systems were replaced after December 31, 1989, they may not be

operated after expiration of 30 years after the replacement. If several heaters are

operated in a building, the application of sentences 1, 2 or 3 overall is to be based on

the second oldest heater.

(3) Paragraph 1 is not to be applied if

1. it conflicts with other public law obligations,

2. the expenditure required for the shutdown and installation of a new heatingsystem could not be recouped by the resulting savings within a reasonable

period, even through claiming possible subsidies, or

3. if

a) the building application for the building was filed after December 31, 1994,

b) the building already conformed to the requirement level of the German

Ordinance on Thermal Insulation (WSV) of August 16, 1994 (Federal Law

Gazette: BGBl. I pg. 2121) at the time of building completionor

c) the building was brought up to at least the requirement level stated in letter

b by later modifications.

In determining the energy parameters of the building in accordance with sentence 1

No. 3 letters b and c, the provisions on the simplified data collection can be applied in

accordance with section 9 paragraph 2 sentence 2 and the data provision by the

proprietor in accordance with section 17 paragraph 5. Section 25 paragraphs 1 and 2remain unaffected.

Section 11

Maintenance of energy quality

(1) Exterior components may not be modified in such a way that the energy quality of the

building is changed for the worse. The same applies to systems and equipment in accordance

with Part 4 if they were to be considered in the proof of the requirements of energy-savingFederal Law regulations.


13/66

13

(2) Equipment in systems which reduces energy demand in accordance with paragraph 1

are to be kept operational by the operator and are to be used as intended. Use and maintenance

within the meaning of sentence 1 is considered given if the influence of a device reducing

energy demand on the annual primary energy demand is counterbalanced by other installation

engineering or structural measures.

(3) The systems and equipment of heating, cooling and air circulation technology as well as

those of the hot water supply are to be operated appropriately by the operator. Components

having a significant influence on the degree of efficiency of such systems are to be serviced

and repaired by the operator regularly. Specialist qualification is a requirement for servicing

and repair. Qualified persons are those who possess the necessary specialised knowledge and

expertise for performance of servicing and repair work.

Section 12

Energy inspection of air-conditioning systems

(1) Operators of air-conditioning systems installed in the building with a cooling capacity

of more than twelve kilowatts must have energy inspections of these systems performed by

persons authorised within the meaning of paragraph 5 within the timeframes specified in

paragraphs 3 and 4.

(2) The inspection includes measures to check components affecting the level of efficiency

of the system and the size of the system in relation to the cooling needs of the building. It

relates particularly to

1. the examination and evaluation of influences which are responsible for the layout of the

system, particularly changes of the use and occupancy of the space, the utilisation periods,

the inner sources of heat as well as the relevant structural-physical features of the building

and of the set values required by the operator with regard to air volume, temperature,humidity, operating time and tolerances, and

2. the establishment of the efficiency of significant components.

Advice is given to the operator in the form of brief, technical indications of measures for the

cost-effective improvement of energy parameters of the system, for its replacement or for

alternative solutions. The inspecting person must certify to the operator the results of the

inspection giving his name and address and his professional title.

(3) The first inspection should be carried out in the tenth year after start-up or thereplacement of significant components such as heat transmitters, ventilators or refrigerating


14/66

14

machines. Notwithstanding sentence 1, the systems that are over four and up to twelve years

old on October 1, 2007 must undergo an initial inspection within six years, the systems over

twelve years old must undergo inspection within four years and the systems over 20 years old

within two years of October 1, 2007.

(4) After the initial inspection the system must undergo a repeat inspection at least every

ten years.

(5) Inspections may only be conducted by experts. Experts are, in particular,

1. persons with a professional degree in in the fields of supply engineering or building

services with at least one year of professional experience in planning, construction,

operation or testing of cooling and ventilation systems,

persons with a professional degree in a) the fields of mechanical engineering, electrical

engineering, process engineering, construction engineering or

b) another technical field with a training focus on supply engineering or building services

with at least three years professional experience in planning, construction, operation or

testing of cooling and ventilation systems.

Equivalent apprenticeships gained in another member state of the European Union, another

state party to the Treaty on the European Economic Area or in Switzerland and which can be

documented by proof of apprenticeship, are equivalent to the apprenticeships named in

sentence 2.

(6) The operator must present upon request the certification on performance of the

inspection to the authority responsible according to state law.


15/66

15

Part 4

Heating, air-handling systems and hot water supply

Section 13 Start-up of boilers and other heat generating systems

(1) Boilers which are fired with liquid or gaseous fuels and whose capacity is at least four

kilowatts and at most 400 kilowatts, may only be installed or set up for the purpose of start-up

in buildings if they have CE labelling in accordance with section 5 paragraphs 1 and 2 of the

regulation on the bringing into circulation of boilers and equipment in accordance with the

Building Products Act of April 28, 1998 (Federal Law Gazette: BGBl. I pg. 796) or in

accordance with Article 7 paragraph 1 sentence 2 of Council Directive 92/42/EEC of May21, 1992 on efficiency requirements for new hot-water boilers fired with liquid or gaseous

fuels (OJ L 167 of 22.6.1992 , pg. 17, L 195 pg. 32) last amended by Directive 2005/32/EC of

the European Parliament and Council of July 6, 2005 (OJ L 191 of 22.7.2005, pg. 29).

Sentence 1 also applies to boilers assembled from equipment if the parameters derived from

the EC conformity declaration accompanying the equipment are observed.

(2) Boilers may only be installed or set up in buildings for the purpose of start-up if

the requirements of Appendix 4a are met. In cases where the shutdown of electrical

thermal storage systems is required in accordance with section 10a, the requirements of

Appendix 4a are also to be applied to other heat generating systems whose heating

capacity is greater than 20 watts per square metres of floor space. Exceptions to this are

existing buildings, if the ir annual primary energy demand does not exceed the value of the

annual primary energy demand of the reference building by any more than 40 percent.

(3) Paragraph 1 is not to be applied to

1. individually produced boilers,

2. boilers designed for operation with fuels which differ significantly from the standard

liquid and gaseous fuels available,

3. systems exclusively for hot water preparation,

4. kitchen stoves and equipment designed primarily for heating the space in which it is

installed or set up, but which also deliver hot water for central heating and for other

purposes,


16/66

16

5. Equipment with a capacity of less than six kilowatts for the supply of a hot water

storage system with gravity circulation.

(4) Boilers with a capacity of less than four kilowatts or more than 400 kilowatts, and

boilers in accordance with paragraph 3 may only be set up or installed in buildings for thepurpose of start-up if they are insulated against heat loss in accordance with recognised rules

of technology.

Section 14

Distribution devices and hot water systems

(1) Central heating must be furnished upon installation in buildings with central automatic

devices for the reduction and shutdown of the heat supply as well as for the activation anddeactivation of electrical drives depending on

1. the outside temperature or another suitable reference variable and

2. the time.

If the devices required in sentence 1 are not installed in existing buildings, the proprietor must

upgrade them. In the case of water heating which is connected without heat exchangers to a

small district or district heating supply, sentence 1 is considered complied with as regards the

reduction and shutdown of heat even without the corresponding devices in the house and

customer installations, if the flow temperature of the small district or district heating network

is regulated in conjunction with the exterior temperature and the time by corresponding

devices in the central generation plant.

(2) Heating-related systems with water as a heat carrier must be equipped upon installation

in buildings with automatic devices for room-by-room regulation of the room temperature.

Sentence 1 does not apply to individual heating equipment which is designed for operation

with liquid or solid fuels. With the exception of residential buildings, group regulation is

permissible for groups of rooms of the same type and use. Notwithstanding sentence 1,

underfloor heating in buildings constructed before February 1, 2002 may be fitted with

devices for room-by-room adjustment of the heat output to the heating load. If the equipment

required in sentences 1 to 3 is not present in existing buildings, the proprietor must upgrade

them.

(3) In central heating with a capacity of more than 25 kilowatts, the circulating pumps of the heating circuits are to be equipped upon initial installation and upon replacement in such a


17/66

17

way that the electrical power input adjusts automatically to the operation-related requirements

with at least three levels, provided this does not conflict with any safety-related requirements

of the boiler.

(4) Circulation pumps must be furnished upon installation in hot water systems withautomatic devices for switching on and off.

(5) Upon initial installation and upon replacement of heat distribution and hot water pipes

as well as of fittings in buildings, the heat dissipation is to be limited in accordance with

Appendix 5.

(6) Upon initial installation in buildings of equipment in which heat or hot water is stored,

and in the case of their replacement, their heat dissipation is to be limited according to

recognised rules of technology.

Section 15

Air-conditioning and other air-handling systems

(1) Upon installation in buildings of air-conditioning systems with a cooling capacity of

more than twelve kilowatts and air handling systems for a volume power of delivery air of at

least 4 000 cubic metres per hour, as well as upon replacement of central devices or air duct

systems of such systems, these systems must be designed in such a way, that

1. the electrical power of the individual ventilators related to the delivery volume or

2. the weighted average value of the electric power of all delivery and exhaust air fans

related to the relevant delivery volume

does not exceed the threshold value of Category SFP 4 in accordance with DIN EN 13779 :

2007-09 at design flow rate . The threshold value for Class SFP 4 can be increased by

tolerances according to DIN EN 13779 : 2007-09 Part 6.5.2 for gas and HEPA filters as

well as heat feedback components of Classes H2 or H1 in accordance with DIN EN

13053.

(2) Upon installation of systems in buildings in accordance with paragraph 1 sentence 1 and

in the case of replacement of central controllers of such systems, if these systems are intended

to directly change the humidity of the ambient air, these systems must be equipped with

automatic regulating devices, in which separate target values for the humidification and

dehumidification can be set and the directly measured humidity of the supply or exhaust air

serves as a reference variable. If such devices are not present in existing systems in

accordance with paragraph 1 sentence 1, the operator must upgrade in the case of air-


18/66

18

conditioning systems within six months of expiration of the relevant time limit in section

12 paragraph 3, in the case of other ventilation and air-conditioning systems with

appropriate application of the time limits in section 12 paragraph 3.

(3) Upon installation of systems in buildings in accordance with paragraph 1 sentence 1 andin the case of replacement of central controllers or air duct systems of such systems, these

systems must be furnished with devices for automatic regulation of flow rates depending on

the thermal and material loads or for timed setting of the flow rates if the supply air rate of

these systems per square metre of net floor area serviced exceeds nine cubic metres per hour,

in residential buildings per square metre of building floor space serviced. Sentence 1 does not

apply if increased supply air flow rates are required in the rooms serviced based on industrial

or health protection or if load changes cannot be ascertained either by technical measurementor over the course of time.

(4) If cooling distribution and cold water pipes and fittings belonging to systems

within the meaning of paragraph 1 sentence 1 are initially installed or replaced in

buildings, their heat absorption is to be limited in accordance with Appendix 5.

(5) If systems in line with paragraph 1 sentence 1 are installed in buildings or central

controllers of such systems are replaced, these must be equipped with a device for heat

recovery which at least corresponds to Class H3 in accordance with DIN EN 13053 :

2007-09. For the number of operating hours the general constraints on usage in

accordance with DIN V 18599-10 : 2007-02 are decisive, and for the air flow rate it is the

external air flow rate.


19/66

19

Part 5

Energy performance certificates and recommendations

for the improvement of energy efficiency

Section 16

Issue and use of energy performance certificates

(1) When a building is constructed, the builder must ensure that, if he is also proprietor of

the building, an energy performance certificate is issued to him or to the proprietor of the

building in accordance with the sample in Appendix 6 or 7 taking as a basis the energy

parameters of the completed building. Sentence 1 is to be applied accordingly if

1. modifications are made to a building within the meaning of Appendix 3 Nos . 1 to 6 or

2. the floor space of the heated or cooled rooms of a building is increased by more than half

and in so doing the procedure in accordance with section 9 paragraph 1 sentence 2 is to be

used and calculations made for the whole building in accordance with section 9 paragraph 2.

The proprietor must present the energy performance certificate upon request to the authorities

responsible according to state law.

(2) Should a piece of land with a building upon it, a right equivalent to real property relating

to a piece of land with constructive property or ownership or part ownership of a property be

sold, the seller must make available to the potential buyer an energy performance certificate

with the content according to the sample in Appendix 6 or 7, at the latest immediately after

the potential buyer has requested this. Sentence 1 is applicable correspondingly to the

proprietor, lessor, landlord and lease provider in the case of rental, lease or upon leasing of a

building, flat or any other independent units of use.

(3) For buildings with more than 1 000 square metres of floor space in which public

authorities and other institutions provide public services for a large number of people and

which are therefore frequented often by these people, energy performance certificates are to

be issued in accordance with the sample in Appendix 7. The proprietor must display the

energy performance certificate in a place that is visible to the public; the notice can also be

prepared in accordance with the sample in Appendix 8 or 9.

(4) The provisions of this Part do not apply to small buildings. Paragraphs 2 and 3 are not

applicable to historic buildings.


20/66

20

Section 17

Basic principles for energy performance certificates

(1) The issuer must issue energy performance certificates in accordance with section 16 on

the basis of the calculated energy demand or the energy consumption recorded as required by

paragraphs 2 to 6 and sections 18 and 19. It is permissible to state the energy demand as well

as the energy consumption.

(2) Energy performance certificates may be issued only on the basis of energy demand in

cases of section 16 paragraph 1. In cases of section 16 paragraph 2, energy performance

certificates for residential buildings with less than five flats, and for which the building

application was filed before November 1, 1977, are to be issued as from October 1, 2008

based on the energy demand. Sentence 2 does not apply if the residential building

1. already complied with the requirement level of the thermal insulation ordinance of

August 11, 1977 (Federal Law Gazette: BGBl. I pg 1554) upon completion of the

building or

2. was brought up at least to the requirement level stated in number 1 through later

modifications.

The provisions on simplified data collection in accordance with section 9 paragraph 2

sentence 2 and data provision by the proprietor in accordance with paragraph 5 can be used

for determination of the energy parameters of the residential building in accordance with

sentence 3.

(3) Energy performance certificates are issued for buildings. They are to be issued for parts

of buildings if the parts of the building are to be treated separately in accordance with section

22.

(4) Energy performance certificates must correspond in content and design to the samples

in Appendices 6 to 9 and must contain at least the information required there for the relevant

type of certificate and not marked as voluntary; they are to be signed by the issuer with his

name, address and professional title either by hand or by reproduction of the signature.

Additional data may be attached.

(5) The proprietor can provide the data required for the issue of the energy performance

certificate in accordance with section 18 paragraph 1 sentence 1 or paragraph 2 sentence

1 in connection with Appendices 1, 2 and 3 No. 8 or in accordance with section 19

paragraph 1 sentences 1 and 3, paragraph 2 sentence 1 or 3 and paragraph 3 sentence 1 .

The proprietor must ensure that the data provided by him in accordance with sentence 1

is correct. The issuer may not use the data provided by the proprietor as a basis for his


21/66

21

calculation if there is good reason to doubt the accuracy of the data . If in the issue of the

energy performance certificate, the issuer uses data which he has established himself,

sentence 2 is to be applied accordingly.

(6) Energy performance certificates are to be issued for a validity period of ten years.

Irrespective of this, energy performance certificates become invalid when a new energy

performance certificate is required in accordance with section 16 paragraph 1.

Section 18

Issue on the basis of energy demand

(1) If energy performance certificates for buildings to be constructed are issued on the basis

of the calculated energy demand, these are to be based on the results of the calculationsrequired in accordance with sections 3 to 5. The results are to be stated in the energy

performance certificates if the statement of this information for energy demand values is

provided for in the samples in Appendices 6 to 8.

(2) If energy performance certificates are issued for existing buildings on the basis of

calculated energy demand, section 9 paragraph 2 is to be applied accordingly to the required

calculations . The results are to be stated in the energy performance certificates if the statement

of this information for energy demand values is provided for in the samples in Appendices 6to 8.

Section 19

Issue on the basis of energy consumption

(1) If energy performance certificates are issued for existing buildings on the basis of

energy consumption recorded, the energy consumption adjusted for weather conditions

(energy consumption reference value) is to be calculated as required in paragraphs 2 and 3.The results are to be stated in the energy performance certificates, if the statement of this

information for energy consumption reference values is provided for in the samples of

Appendices 6, 7 and 9. The provisions of section 9 paragraph 2 sentence 2 on simplified data

collection are to be applied accordingly.

(2) In residential buildings, the energy consumption for heating and central hot water

preparation is to be determined and stated in kilowatt hours per year and square metre of

building floor space. The building floor space can be determined for residential buildings with

up to two flats and a heated basement at a set rate of 1.35 times the value of the living space,


22/66

22

in other residential buildings at a rate of 1.2 times the value of the living space. In commercial

buildings the energy consumption for heating, hot water preparation, cooling, ventilation and

light installations is to be determined and stated in kilowatt hours per year and square metre of

net floor area. The energy consumption for heating is to be adjusted for weather conditions.

(3) For the determination of energy consumption

1. consumption data from heating cost statements in accordance with the German Heating

Cost Ordinance for the entire building,

2. other appropriate consumption data, in particular energy supplier statements or

appropriately conducted consumption measurements, or

3. a combination of consumption data in accordance with numbers 1 and 2

are to be used; in so doing the statements from a continuous period of 36 months are to beused as a basis, including the latest available statement period . In the determination in

accordance with sentence 1, longer periods of non-occupancy are to be taken account of by

appropriate calculation. The decisive energy consumption is the average consumption in

the period used as a basis . An appropriate procedure which corresponds to the recognised

rules of technology is to be used for adjustment of the energy consumption for weather

conditions. Observation of the recognised rules of technology is assumed if in the

determination of energy consumption parameters, simplifications are used which have beenpublished in the Federal Bulletin ( Bundesanzeiger - BAnz) by the German Federal Ministry

of Transport, Building and Urban Affairs in conjunction with the German Federal Ministry

for Economics and Technology.

(4) The values to be entered in the energy performance certificate as comparative values for

energy consumption reference values of a commercial building are those that have been

published in the Bundesanzeiger by the German Federal Ministry of Transport, Building and

Urban Affairs in conjunction with the German Federal Ministry for Economics and

Technology.

Section 20

Recommendations for the improvement of energy efficiency

(1) If measures for cost-effective improvements of the energy parameters of the building

(energy efficiency) are possible, the issuer of the energy performance certificate must issue

the proprietor, upon issue of an energy performance certificate appropriate, accompanying

recommendations in the form of brief technical notes (modernisation recommendations). In

the process, reference can additionally be made to further notes in publications of the German


23/66

23

Federal Ministry for Transport, Building and Urban Affairs in conjunction with the German

Federal Ministry for Economics and Technology or third parties authorised by them. The

provisions of section 9 paragraph 2 sentence 2 on simplified data collection are to be applied

accordingly. If modernisation recommendations are not possible, the issuer must notify the

proprietor of this upon issue of the energy performance certificate.

(2) The presentation of modernisation recommendations and notification in accordance

with paragraph 1 sentence 4 must correspond in content and design to the sample in

Appendix 10. Section 17 paragraphs 4 and 5 are to be applied accordingly.

(3) Modernisation recommendations are to be attached to the energy performance certificate

with the content in accordance with the samples in Appendices 6 and 7.

Section 21

Issuing authorisation for existing buildings

(1) For the issue of energy performance certificates for existing buildings in accordance

with section 16 paragraphs 2 and 3 and of modernisation recommendations in accordance

with section 20, the only authorised persons are

1. persons with a professional degree in

a) the fields of architecture, structural engineering, construction engineering, building

services, physics, structural physics, mechanical or electrical engineering or

b) another technical or scientific field with a main focus on a field named under letter a,

2. persons within the meaning of No. 1 letter a in the area of architecture with a specialism

in interior design,

3. persons who fulfil compulsory approval conditions for entry into the register of craftsmen

for a building, expansion or installation engineering trade or for chimney sweeping, and

master craftsmen of the trades not subject to approval in these fields and persons who are

entitled on account of their training to exercise such a trade independently without the

title of master craftsman,

4. officially recognised or tested technicians whose main training focus also includes the

assessment of building cladding, the assessment of heating and hot water preparation

systems or the assessment of ventilation and air conditioning systems,

5. persons, who are authorised under structural engineering regulations of the Federal

States to sign structural engineering proofs of thermal insulation or energy saving in

the construction of buildings, within the scope of the relevant entitlement to such

proofs,


24/66

24

when, with the exception of the persons named in No. 5, they fulfil at least one of the

conditions stated in paragraph 2. The issuing authorisation in accordance with sentence 1

Nos. 2 to 4 in conjunction with paragraph 2 only refers to energy performance certificates for

existing residential buildings including modernisation recommendations within the meaning

of section 20 . Sentence 2 applies accordingly for persons named in sentence 1 No. 1, who

do not fulfil the conditions of paragraph 2 Nos. 1 or 3 but whose further training

satisfies the requirements of paragraph 2 No. 2 letter b.

(2) The precondition for issuing authorisation in accordance with paragraph 1 sentence 1

Nos. 1 to 4 is

1. a main focus during the course of study on the area of energy-saving construction or,

following a course of study without such a focal point, a minimum of two yearsprofessional experience in basic structural engineering activities concerned with

construction or installation engineering,

2. a successful course of further training in the field of energy-saving construction, which

a) in cases of paragraph 1 sentence 1 n o. 1 corresponds to the basic content of Appendix

11,

b) in cases of paragraph 1 sentence 1 nos . 2 to 4 corresponds to the basic content of

Appendix 11 nos . 1 and 2,

or

3. a public appointment as a sworn expert for a subject area in the field of energy-saving

construction or in basic structural engineering activities concerned with construction or

installation engineering .

(3) Section 12 paragraph 5 sentence 3 is to be applied accordingly to apprenticeships

within the meaning of paragraph 1.

Part 6

Common regulations, regulatory offences

Section 22

Mixed-use buildings


25/66

25

(1) Sections of a residential building, which differ significantly from residential use with

regard to the nature of usage and the building fittings and which make up a not insignificant

part of the building floor space, are to be treated separately as commercial buildings.

(2) Sections of a commercial building, which are used for residential purposes and make up a

not insignificant part of the net floor area, are to be treated separately as residential buildings.

(3) For the calculation of partition walls and partition ceilings between building sections, in

cases of paragraphs 1 and 2, Appendix 1 No. 2.6 sentence 1 applies accordingly.

Section 23

Rules of technology

(1) The German Federal Ministry for Transport, Building and Urban Affairs can, in

conjunction with the German Federal Ministry of Economics and Technology, refer to

publications by expert authorities on recognised rules of technology through publication in the

Federal Bulletin (BAnz), if reference is made to such rules in this regulation.

(2) Norms, technical regulations or other provisions of other member states of the European

Union and other states party to the Treaty on the European Economic Area, as well as Turkey,

are also components of the recognised rules of technology if compliance with them

permanently guarantees the required protective level with regard to energy saving and thermal

insulation.

(3) If an evaluation of building materials, components and systems with regard to the

requirements of this regulation is not possible based on recognised rules of technology, since

such rules do not exist or there is significant deviation from them, the authority responsible

under state law must be provided with the required proofs for evaluation by some other

means. Sentence 1 does not apply to building materials, components and systems

1. which carry CE labelling in accordance with the German Building Products Act or other

legal regulations for the implementation of European Community Law whose

regulations also include requirements for energy saving, and, according to these

regulations, have permissible classes and power levels as established by the countries,

or

2. for which, according to building regulations on the use of building products, the

observation of this regulation is also ensured.

(4) The German Federal Ministry of Transport, Building and Urban Affairs and the German

Federal Ministry of Economics and Technology or a third party on their behalf can, in line


26/66

26

with this regulation, besides public notices in the Federal Bulletin (BAnz), also publish

notices free of charge on the internet.

(5) If the dated technical rules to be applied under this regulation make reference to

undated technical rules, these are to be applied in the version that corresponds to theversion at the time of publication of the dated technical rule.

Section 24

Exceptions

(1) If, in historical buildings or other building fabric particularly worthy of conservation, the

fulfilment of the requirements of this regulation has a detrimental effect on the fabric or the

appearance or other measures lead to disproportionately high costs, then the requirements of

this regulation can be deviated from.

(2) If the goals of this regulation are attained to the same extent by measures other than

those provided for in this regulation, the authorities responsible under state law shall allow

exceptions upon request.

Section 25

Exemptions

(1) The authorities responsible under state law must allow release from the requirements of

this regulation upon request if the requirements in individual cases, due to special

circumstances, cause unreasonable expense or in some other manner lead to undue hardship.

Undue hardship exists, in particular, if the required expenses cannot be recouped by the

resulting savings within the usual period of use, in the case of requirements for existing

buildings within a reasonable period.

(2) Undue hardship within the meaning of paragraph 1 can also result from the fact that

a proprietor must at the same time or within a short period of time fulfil several

obligations for reasons of energy saving under this regulation or other public-law

regulations and this cannot be reasonably expected of him.

(3) Paragraph 1 is not to be applied to the provisions of Part 5.

Section 26

Responsible parties


27/66

27

(1) The builder is responsible for compliance with the provisions of this regulation, provided

no other responsible party is expressly designated in this regulation.

(2) Compliance with the provisions of this regulation is also the responsibility of those

persons within the scope of their respective sphere of influence who are are employed onbehalf of the builder in the construction or modification of buildings or building systems

engineering.

Section 26a

Private proofs

(1) Any party who performs work in the course of business on or in existing buildings

for the purposes of

1. modifying external components within the meaning of section 9 paragraph 1

sentence 1,

2. insulating top floor ceilings within the meaning of section 10 paragraphs 3 and 4,

and in connection with paragraph 5, or

3. initial installation or replacement of boilers and other heat generating systems in

accordance with section 13, distribution devices or hot water systems in accordance

with section 14 or air-conditioning or other ambient air technology systems in

accordance with section 15, must confirm in writing to the proprietor immediately

after conclusion of the work that the construction or system parts modified or

installed by him meet the requirements of this regulation (contractor declaration).

(2) The contractor declaration provides proof of fulfilment of the obligations arising

out of the provisions stated in paragraph 1. The contractor declaration is to be retained

by the proprietor for at least five years. The proprietor must submit the contractor

declarations upon request to the authorities responsible under state law.

Section 26b

Responsibilities of the district heating inspector

(1) The district heating inspector as grantee checks heating systems within the scope of

the fireplace inspection to establish whether

1. boilers, which should have been shut down in accordance with section 10 paragraph1, also in conjunction with paragraph 5, are still in operation and


28/66

28

2. heat distribution and hot water pipes and fittings, which should have been insulated

in accordance with section 10 paragraph 2, also in conjunction with paragraph 5, are

still uninsulated.

(2) In heating systems which are installed in existing buildings, the district heating

inspector as grantee also checks within the scope of the first fireplace inspection after

installation whether

1. central heating systems are fitted with a central automatic device for reducing and

shutting off heat supply as well as for the activation and deactivation of electrical

drives, as required under section 14 paragraph 1,

2. circulating pumps in central heating systems are fitted with devices for the

automatic adjustment of the electrical power input in accordance with section 14paragraph 3,

3. in the case of heat distribution and hot water pipes and fittings, heat dissipation is

limited in accordance with section 14 paragraph 5.

(3) In the case of non-compliance, the district heating inspector notifies the proprietor

in writing of the obligations arising out of the provisions stated in paragraphs 1 and 2

and sets a reasonable time limit for their subsequent fulfilment. If the obligations are not

fulfilled within the established period, the district heating inspector immediately notifiesthe authority responsible under state law.

(4) The fulfilment of the obligations arising out of the provisions stated in paragraphs

1 and 2 can be certified by presentation of contractor declarations to the district heating

inspector. No further inspection by the district heating inspector is then required

(5) An inspection in accordance with paragraph 1 is not made if a comparable

inspection has already been made by the district heating inspector in compliance withstate law for the respective heating system before [ insert: date of the entry into force of

this regulation ].


29/66

29

Section 27

Regulatory offences

(1) A regulatory offence within the meaning of section 8 paragraph 1 No . 1 of the German

Energy Saving Act is committed by anyone who deliberately or carelessly

1. contrary to section 3 paragraph 1, incorrectly constructs a residential building,

2. contrary to section 4 paragraph 1, incorrectly constructs a commercial building,

3. contrary to section 9 paragraph 1 sentence 1, executes modifications,

4. contrary to section 12 paragraph 1, fails to have an inspection performed or performed

on time,

5. contrary to section 12 paragraph 5 sentence 1, performs an inspection,

6. contrary to section 13 paragraph 1 sentence 1, also in conjunction with sentence 2,

installs or sets up a boiler,

7. contrary to section 14 paragraph 1 sentence 1, paragraph 2 sentence 1 or paragraph 3,

fails to equip a central heating system, a heating system or a circulation pump, or fails to

do this on time

or

8. contrary to section 14 paragraph 5, fails to restrict the heat dissipation of heat

distribution or hot water pipes or fittings or fails to do this on time.

(2) A regulatory offence within the meaning of section 8 paragraph 1 No. 2 of the German

Energy Saving Act is committed by anyone who deliberately or carelessly

1. contrary to section 16 paragraph 2 sentence 1, also in conjunction with sentence 2, fails

to make available an energy performance certificate or fails to make it available in full or

on time ,

2. contrary to section 17 paragraph 5 sentence 2, also in conjunction with sentence 4,

fails to ensure that the data prepared is correct,

3. uses as a basis for his calculations, data provided in contravention of section 17

paragraph 5 sentence 3, or

4. issues an energy performance certificate or modernisation recommendations in

contravention of section 21 paragraph 1 sentence 1.

(3) A regulatory offence within the meaning of section 8 paragraph 1 No. 3 of the

German Energy Saving Act is committed by anyone who deliberately or carelessly fails


30/66

30

to provide certification, fails to provide this correctly or on time in contravention of

section 26a paragraph 1.

Part 7Final provisions

Section 28

General interim regulations

(1) This regulation is to be applied in the version valid at the time of the filing of the

building application or the building notice to projects whose object is the construction,

modification, extension or expansion of buildings.

(2) This regulation is to be applied in the version valid at the time of submission to the

responsible authority to projects not subject to building approval which are to be submitted

for the attention of the local authority under building regulations.

(3) This regulation is to be applied in the version valid at the time building

construction commences to other projects not subject to building approval, especially

projects not subject to approval, notice or specific procedures .

(4) Notwithstanding paragraph 1 the new law is to be applied at the request of the builder ,

if a final decision has not yet been made on the building application or following building

notice.

Section 29

Interim regulations for energy performance certificates and issuers

(1) Energy performance certificates for residential buildings completed before 1965 must

be made available in cases of section 16 paragraph 2 from July 1, 2008, for residential

buildings constructed later, from January 1, 2009. Sentence 1 is not to be applied to energy

demand certificates which were issued for residential buildings in accordance with section 13

paragraph 1 or 2 of the German Energy Saving Ordinance in a version valid before October

1, 2007.

(2) Energy performance certificates for commercial buildings must be

1. made accessible in cases of section 16 paragraph 2 and

2. issued and displayed in cases of section 16 paragraph 3


31/66

31

from July 1, 2009.

Sentence 1 No. 1 is not to be applied to energy and heat demand certificates which were

issued for commercial buildings in accordance with section 13 paragraph 1, 2 or 3 of the

German Energy Saving Ordinance in a version valid before October 1, 2007.(3) Energy and heat demand certificates in accordance with versions of the German Energy

Saving Ordinance valid before October 1, 2007 and heat demand certificates in accordance

with section 12 of the German Thermal Insulation Ordinance of August 16, 1994 (BGBl. I pg

2121) are deemed energy performance certificates within the meaning of section 16

paragraph 1 sentence 3, paragraphs . 2 and 3; the validity period of these certificates is ten

years from the date of issue. The same applies to energy performance certificates issued

before October 1, 20071. by district bodies or by third parties at the instigation of such bodies according to

uniform rules or

2. in application of the provisions contained in the draft of this regulation enacted by the

German Federal Government on April 25, 2007 (published at Bundesrats-Drucksache

282/07).

(4) For the issue of energy performance certificates for existing residential buildings in

accordance with section 16 paragraph 2 and of modernisation recommendations in

accordance with section 20, in addition to the persons named in section 21, authorised persons

are also those who were registered before April 25, 2007 with the Federal Office of

Economics and Export Control (BAFA) as authorised applicants in accordance with the

German Federal Ministry of Economics and Technologys guideline dated September 7,

2006on the promotion of local consultation on the economical and efficient use of energy in

residential buildings (Federal Bulletin ref: BAnz. pg. 6379).


accordance with section 16 paragraph 2 and of modernisation recommendations in accordance

with section 20, in addition to the persons authorised under section 21, authorised persons are

also those who on April 25, 2007 had concluded professional training in construction

materials trading or in the building materials industry and had successfully concluded a

further training course in energy consultancy in construction materials trading or in the

building materials industry. Sentence 1 applies accordingly to persons who commenced such

a further training course before April 25, 2007, after their successful conclusion of the

training.


32/66

32


accordance with section 16 paragraph 2 and of modernisation recommendations in

accordance with section 20, in addition to the persons named in section 21, authorised

persons are also those who on April 25, 2007 had successfully concluded a further training

course in energy consultancy to the craftwork industry. Sentence 1 applies accordingly to

persons who commenced such a further training course before April 25, 2007, after their

successful conclusion of training.

Section 30

abrogated

Section 31

(Entry into force, repeal)


33/66

33

Note: All of Appendix 1 was revised (for reasons of clarity, bold face typing/underlining

was not used).

Appendix 1 (to sections 3 and 9)

Requirements for residential buildings

1 Maximum values of the annual primary energy demand and of the specific transfer

heat loss for residential buildings to be constructed (for section 3 paragraphs 1 and

2

1.1 Maximum value of the annual primary energy demand

The maximum value of the annual primary energy demand of a residential building tobe constructed is the annual primary energy demand, based on building floor space,

for a reference building of the same geometry, building floor space and alignment as

the residential building to be constructed, calculated according to one of the

procedures given in No. 2.1, which corresponds to the stipulations of Table 1 with

regard to its design.

If an electrical hot water system is to be installed in the residential building to be

constructed, this may be taken account of instead of Table 1 Line 6 as a central flatsystem without storage in accordance with the general constraints given in Table 5.1-3

of DIN V 4701-10 : 2003-08, amended by A1 : 2006-12. The resulting maximum value

of the annual primary energy demand is to be reduced in cases of sentence 2 by 10.9

kWh/(ma); this does not apply to execution of measures for energy saving in

accordance with section 7 No. 2 in connection with No. VI.1 of the Appendix to the

German Renewable Energies Heat Act (EEWrmeG).

Table 1

Design of the reference building

Line Component/systemReference design / value

(measuring unit)

Parameter (for Lines 1.1 to 3)1.1 Outside wall, storey ceiling

against external air Heat transfer coefficient U = 0.28 W/(mK)

1.2 Exterior wall against ground,foundation slab, walls andceilings to unheated spaces(except those in accordance withLine 1.1)

Heat transfer coefficient U = 0.35 W/(mK)


34/66

34

Line Component/system Reference design / value(measuring unit)1.3 Roof, top-floor ceiling,

walls to long pane of roof Heat transfer coefficient U = 0.20 W/(mK)

1.4 Windows, French doors Heat transfer coefficient U w = 1.30 W/(mK)

Overall level of energy permeabilityof glazing g = 0.60

1.5 SkylightsHeat transfer coefficient U w = 1.40 W/(mK)

Overall energy transmittance of theglazing g = 0.60

1.6 Dome lights Heat transfer coefficient U w = 2.70 W/(mK)

Overall energy permeability of theglazing g = 0.64

1.7 Outside doors Heat transfer coefficient U = 1.80 W/(mK)2 Components according to Lines

1.1 to 1.7 Heat bridge toleranceUWB = 0.05 W/(mK)

3 Airtightness of building cladding

Rated value n 50

In the case of calculation according to DIN V 4108-6 : 2003-06: with leak test DIN V 18599-2 : 2007-02: according to

Category I4 Sunscreen device No sun protection device5 Heating system Heat generation through condensing boiler (improved), domestic fuel oil,

Set up:-for building with up to 2 flats within the thermal cladding

-for building with more than 2 flats outside of the thermal cladding Layout temperature 55/45 C, central distribution system within the heat

transmitting surface area, inside lines and assigned pipes, pumps laid out(controlled, p constant), pipeline network hydraulically aligned, thermal insulationof pipelines according to Appendix 5

Heat transfer with free static heating surfaces, alignment to normal exterior wall,thermostat valves with proportional range 1K

6 Hot water preparation system Central hot water preparation Joint heat preparation with heating system according to Line 5 Solar plant (multi-purpose system with flat plate collector) corresponding to the

provisions of DIN V 4701-10 : 2003-08 or DIN V 18599-5 : 2007-02 Storage tanks heated indirectly (standing), same setup as heat generating device,layout in accordance with DIN V 4701-10 : 2003-08 or DIN V 18599-5 : 2007-02as- Small solar plant with A N smaller than 500 m (bi-fuel solar storage)- Large solar plant with A N greater than or equal to 500 m

Distribution system within the heat transmitting surface area, inside lines, commoninstallation wall, thermal insulation of pipelines according to Appendix 5, withcirculation, pump laid out if required (controlled, p constant)

7 Cooling No cooling8 Ventilation Central exhaust air system, demand-led with controlled DC ventilator

1.2 Maximum values of the specific transmission heat loss related to the heat

transmitting surface area

The specific, transmission heat loss related to the heat transmitting surface area of a

residential building to be constructed may not exceed the maximum values given in

Table 2.

Table 2

Maximum values of the specific transmission heat loss

related to the heat transmitting surface area


35/66


36/66

36

2 Calculation method for residential buildings (for section 3 paragraph 3, section 9

paragraphs 2 and 5)

2.1 Calculation of annual primary energy demand

2.1.1 The annual primary energy demand Qp for residential buildings is to be determined in

accordance with DIN V 18599 : 2007-02. As primary energy factors, the values for the

non-renewable proportion in accordance with DIN V 18599-1 : 2007-02 are to be used.

For this, the value to be used for liquid biomass is that for the non-renewable proportion

domestic fuel oil EL and for gaseous biomass, the value for the non-renewable

proportion natural gas H are to be used. For liquid or gaseous biomass within the

meaning of section 2 paragraph 1 No. 4 of the Renewable Energies Heat Act

(EEWrmeG), the value 0.5 can be used for the non-renewable proportion if the liquid

or gaseous biomass is generated in direct spatial relation to the building. Sentence 4 is to

be applied correspondingly to buildings which stand in spatial relation to each other and

are supplied directly together with liquid or gaseous biomass within the meaning of

section 2 paragraph 1 No. 4 of the Renewable Energies Heat Act (EEWrmeG). For

electrical power, the value 2.6 is to be used as primary energy factor for the non-

renewable proportion notwithstanding sentence 2. The general constraints named in

Table 3 are to be used in the calculation of the annual primary demand of the reference

residential building and of the residential building.


37/66

37

Table 3

General constraints for calculation of the annual primary energy demand

Line Parameter General constraints

1 Shadow factor F S FS = 0.9provided the structural conditions are not takenaccount of in detail.

2 Solar heat gainsvia opaquecomponents

- Emission level of the exterior surface for heat radiation: = 0.8

- Level of radiation absorption by opaque surfaces:= 0.5;for dark roofs a level of = 0.8 can be assumed instead.

2.1.2 As an alternative to No. 2.1.1, the annual primary energy demand Q p for residential

buildings can be determined in accordance with DIN EN 832 : 2003-06 in conjunction with

DIN V 4108-6 : 2003-06 ) and DIN V 4701-10 : 2003-08, amended by A1 : 2006-12;

section 23 paragraph 3 remains unaffected. As primary energy factors, the values for the non-

renewable proportion are to be used in accordance with DIN V 4701-10 : 2003-08, amended

by A1 : 2006-12. No. 2.1.1 sentence 3 to 6 is to be applied accordingly. The annual heating

demand Q h to be established in this calculation is to be determined according to the monthly

balance procedure in line with DIN EN 832 : 2003-06 with the general constraints stated in

DIN V 4108-6 : 2003-06 *) Appendix D.3. Simplifications for the calculation given in DIN V

4108-6: 2003-06 *) in accordance with DIN EN 832: 2003-06 may be applied. To take account

of ventilation systems with heat recovery, the methodology notes under No. 4.1 of DIN V

4701-10: 2003-08, amended by A1: 2006-12, are to be observed.

2.1.3 If structural or installation engineering components are used in residential buildings, and

there are no recognised rules of technology for their energy evaluation or published,

verified empirical values in accordance with section 9 paragraph 2 sentence 2 clause 3,

then components which display similar energy properties are to be used for this.

2.2 Consideration of hot water preparation

In residential buildings, the energy demand for hot water is to be considered in the

calculation of the annual primary energy demand as follows:

a) For calculation in accordance with No. 2.1.1, the useful energy demand for hot water

is to be set in accordance with Table 3 of DIN V 18599-10 : 2007-02.

) Amended by DIN V 4108-6 Amendment 1 2004-03.


38/66

38

b) For calculation in accordance with No. 2.1.2, the useful heat demand for hot water

preparation Q W within the meaning of DIN V 4701-10 : 2003-08, amended by A1 :

2006-12, is to be set at 12.5 kWh/(ma).

2.3 Calculation of specific transmission heat loss

The specific transmission heat loss TH in W/(mK) related to the heat transmitting

surface area is to be established as follows:

AH

H TT = in W/(mK)

with

HT transmission heat loss in W/K, calculated in accordance with DIN EN 832 : 2003-

06 with the general constraints stated in DIN V 4108-6 : 2003-06 *) Appendix D.

Simplifications given in DIN V 4108-6 : 2003-06 *) for the calculation procedure in

accordance with DIN EN 832 : 2003-06 may be applied;

A heat-transmitting surface area in accordance with No. 1.3.1 in m 2.

2.4 Heated air volume

In calculating the annual primary energy demand in accordance with No. 2.1.1, the

heated air volume V in m 3 is to be established in accordance with DIN V 18599-1 :

2007-02. When calculating in accordance with No. 2.1.2 it is to be established in

accordance with DIN EN 832 : 2003-06. Simplified, it may be calculated as follows:

- V = 0.76 Ve in m 3 in residential buildings of up to three full storeys

- V = 0.80 Ve in m 3 in all other cases

with V e heated building volume in accordance with No. 1.3.2 in m 3.

2.5 Determination of the solar heat gains in prefabricated houses and comparable buildings

If buildings are constructed in accordance with plans which have been created for

several buildings at various locations, the calculation of the solar gains may be done

assuming that all the windows of these buildings were facing east or west.

2.6 Connected constructions

In the calculation of buildings connected to each other, building partition walls

*) Amended by DIN V 4108-6 Amendment 1 2004-03.


39/66

39

a) between buildings which, according to their purpose are heated to indoor

temperatures of at least 19 degrees Celsius, are assumed not to be diathermal and not

considered in the determination of the heat transmitting surface area A,

b) between residential buildings and buildings which, according to their purpose areheated to indoor temperatures of at least 12 degrees Celsius and less than 19 degrees

Celsius, are weighted in calculation of the heat transfer coefficient with a

temperature correction factor F nb in accordance with DIN V 18599-2 : 2007-02 or in

accordance with DIN V 4108-6 : 2003-06 *) and

c) between residential buildings and buildings with significantly lower indoor

temperatures within the meaning of DIN 4108-2 : 2003-07 are weighted in the

calculation of the heat transfer coefficients with a temperature correction factor F u =0.5.

If heated sections of a building are calculated separately, sentence 1 letter a applies

analogously to the partition surfaces between the building sections. If connected

residential buildings are constructed simultaneously, they may be treated as one

building with regard to the requirements of section 3. The provisions of Part 5 remain

unaffected.

2.7 Allowance for mechanically-operated ventilation systems

Within the scope of the calculation in accordance with No. 2, the allowance of heat

recovery or a control-engineered reduced air exchange rate is only permissible in the

case of mechanical ventilation systems if

a) there is evidence of the impermeability of the building in accordance with Appendix

4 No. 2 and

b) the air exchange achieved using the system satisfies the requirement in section 6paragraph 2.

The reference values of the ventilation systems to be applied in the allowance for heat

recovery are to be defined in accordance with recognised rules of technology or taken

from the general building supervisory approvals of the products used. Ventilation

systems must be equipped with devices which allow the user to set the air flow rates of

each unit of use. It must be ensured that the heat gained from the exhaust air is used

first before the heat generated by the heating system.

*) amended by DIN V 4108-6 Amendment 1 2004-03.


40/66

40

2.8 Cooling energy consumption

If the ambient air is cooled, the annual primary energy demand calculated in

accordance with DIN V 18599-1: 2007-02 or according to DIN V 4701-10: 2003-08,

amended by A1: 2006-12 and the information on the delivered energy demand

(electrical energy) in the energy performance certificate in accordance with section 18,

as required by the technology used for cooling per m of cooled building floor space,

are to be increased as follows:

a) when using permanently installed room air conditioners (split, multi-split or compact

units) of the Energy Efficiency Classes A, B or C in accordance with Commission

Directive 2002/31/EC of March 22, 2002 implementing Council Directive

92/75/EEC with regard to energy labelling of household air conditioners (OJ L 86 of

3.4.2002, p. 26) and when cooling by means of household ventilation systems with

reversible heat pump

the annual primary energy demand by 16.2 kWh/(ma) and the delivered energy

demand by 6 kWh/(ma),

b) when using cooling surfaces in the room in connection with cold water circulation

systems and electrical coolers, e.g., via reversible heat pump,



c) when the energy demand for cooling is covered by renewable heat sinks (such as

ground probes, soil collectors, cisterns)



d) when using equipment which is not listed under letters a to c,the annual primary energy demand by 18.9 kWh/(ma) and the delivered energy

demand by 7 kWh/(ma).


41/66

41

3 Summer thermal insulation (for section 3 paragraph 4)

3.1 As the maximum permissible solar transmission reference value in accordance with

section 3 paragraph 4, the values established in DIN 4108-2 : 2003-07 Part 8 are to be

maintained.3.2 The solar transmission reference value is to be determined in accordance with the

procedure stated in DIN 4108-2: 2003-07 Part 8. If an engineering procedure

(simulation calculation) is used for the calculation in accordance with sentence 1, then,

notwithstanding DIN 4108-2: 2003-07, general constraints are to be observed which

adequately reflect the current climatic conditions at the location of the building.

Note: All of Appendix 2 was revised (for reasons of clarity, bold face type/underlining was not used).

Appendix 2 (to sections 4 and 9)

Requirements for commercial buildings

1 Maximum values of the annual primary energy demand and the heat transfer

coefficients for commercial buildings to be constructed (for section 4 paragraphs

1 and 2)

1.1 Maximum values of the annual primary energy demand

1.1.1 The maximum value of the annual primary energy demand of a commercial building to

be constructed is the annual primary energy demand, related to the net floor area,

calculated according to the procedure stated in No. 2 or 3 for a reference building of the

same geometry, net floor area, alignment and use as the commercial building to beconstructed which conforms to the provisions of Table 1 with regard to its design. The

subdivision with regard to usage as well as the calculation method used and general

constraints for the reference building must agree with those for the building to be

constructed; in the subdivision with regard to the installation engineering equipment and

the daylight supply, differences are permissible which are due to the technical design of

the building to be constructed.

1.1.2 The design details in Line Nos. 1.13 to 7 of Table 1 are to be considered for thereference building only to the extent and in the way that they are implemented in the


42/66

42

building. The local design of the hot water system (Line 4.2 of Table 1) may

additionally only be considered for such building zones as show a hot water demand of a

maximum of 200 Wh/(md).

Table 1Design of the reference building

Line Component / System Parameter(for Lines 1.1 to 1.13)Reference design / value

(measuring unit)

Target roomtemperatures in case of

heating to > 19C

Target roomtemperatures in case of

heating to between 12 and< 19C

1.1 Outside wall, storeyceiling against externalair

Heat transfer coefficient U = 0.28 W/(mK) U = 0.35 W/(mK)

1.2 Curtain wall(see also Line 1.14)

Heat transfer coefficient U = 1.40 W/(mK) U = 1.90 W/(mK)Overall energy permeability of theglazing g= 0.48 g = 0.60

Level of light transmission of theglazing D65 = 0.72 D65 = 0.78

1.3 Wall against ground,foundation slab, walls andceilings to unheated spaces(except components inaccordance with Line 1.4)


1.4 Roof (if not under Line 1.5),top-floor ceiling, walls tolong pane of roof


1.5 Glass roofs Heat transfer coefficient U W = 2.70 W/(mK) U W = 2.70 W/(mK)Overall energy permeability of theglazing g= 0.63 g = 0.63


1.6 Light bands Heat transfer coefficient U W = 2.4 W/(mK) U W = 2.4 W/(mK)Overall energy permeability of theglazing g= 0.55 g = 0.55


1.7 Dome lights Heat transfer coefficient U W = 2.70 W/(mK) U W = 2.70 W/(mK)

Overall energy permeability of theglazing g= 0.64 g = 0.64


1.8 Windows, French windows(see also Line 1.14)

Heat transfer coefficient U W = 1.30 W/(mK) U W = 1.90 W/(mK)Overall energy permeability of theglazing g= 0.60 g = 0.60


1.9 Skylights(see also Line 1.14)

Heat transfer coefficient U W = 1.40 W/(mK) U W = 1.90 W/(mK)Overall energy permeability of theglazing g= 0.60 g = 0.60

Level of light transmission of the

glazing D65 = 0.78 D65 = 0.78

1.10 Outside doors Heat transfer coefficient U = 1.80 W/(mK) U = 2.90 W/(mK)


43/66

43


(measuring unit)

1.11 Components in Lines 1.1and 1.3 to 1.10

Heat bridge tolerance UWB = 0.05 W/(mK)

UWB = 0.1 W/(mK)

1.12 Buildingimpermeability

Rated value n50 Category I(according to Table 4of DIN V 18599-2 :

2007-02)

Category I(according to Table 4of DIN V 18599-2 :

2007-02)1.13 Daylight supply with

sun and/or glare shieldDaylight supply factor CTL,Vers,SA in accordance withDIN V 18599-4 : 2007-02

no sun or glare shield present: 0.70 glare shield present: 0.15

1.14 Sunscreen device For the reference building, the actual sunscreen device of the building tobe constructed is to be assumed; it results from the requirements for summer thermal insulation in accordance with No. 4.If sunscreen glazing is used for this, the following reference values are tobe applied for this glazing: in place of the values of Line 1.2

- overall level of energy permeability of glazing g g= 0.35- level of light transmittance of the glazing D65 D65 = 0.58

in place of the values of Lines 1.8 and 1.9:- overall level of energy permeability of glazing g g= 0.35- level of light transmittance of glazing D65 D65 = 0.62

2.1 Type of lighting - in zones of uses 6 and 7 1): as in the designed building- otherwise: direct/indirecteach with electronic connection and bar-shaped fluorescent lamp

2.2 Regulation of lighting Presence control:- in zones of uses 4, 15 to 19, 21 and 31 1) with

presence detector - otherwise manualdaylight dependent control: manual

Constant light control (see Table 3 Line 6)- in zones of Uses 1 to 3, 8 to 10,

28, 29 and 31 1): present- otherwise none

3.1 Heating (ceiling height 4 m)- Heat generating

device

Condensing boiler improved in accordance with DIN V 18599-5 : 2007-02, fan burner, domestic fuel oil EL, setup outside of thermal cladding,water content > 0.15 l/kW

3.2 Heating (ceiling height 4 m)- Heat distribution

- in the case of static heating and convection heating (local postheatingin air-conditioning system):Double-pipe network, external distribution pipelines in the unheatedarea, internal ascending pipes, internal connection pipes, systemtemperatures 55/45 C, hydraulically aligned, p constant, pump laidout if required, pump with intermittent operation, no overflow valves,for the reference case the pipe length is to be determined with70 percent of the standard values and the ambient temperatures inaccordance with the standard values in line with DIN V 18599-5 : 2007-02.

- in the case of central air-conditioning system:Double-pipe network, system temperature 70/55 C, hydraulicallyaligned, p constant, pump laid out if required, for the reference casethe pipe length and the position of the pipelines are to be assumed as for the building to be constructed.


44/66

44


(measuring unit)

3.3 Heating (ceiling height 4 m)- Heat transfer

- in the case of static heating:free heating surfaces on the exterior wall with glass area with radiationshield, proportional controller (1K), no auxiliary power.

- in the case of convection heating (local postheating in A/C system):Controlled variable room temperature, high quality of control.

3.4 Heating (ceiling height> 4 m)

Heating system:Hot air heating with normal induction ratio,side air outlet, proportional controller (1K) (in acc. with DIN V 18599-5 :2007-02)

4.1 Hot water -central system

Heat generating device:Solar plant in accordance with DIN V 18599-8 : 2007-02 No. 6.4.1, with- flat-plate collector: A c = 0.09 (1.5 A NET FLOOR AREA )

0.8 -Volume of the (underlying) solar section of the storage:

- -V s,sol = 2 (1.5 A NFA ) 0.9 -in the case of A NFA > 500 m large solar plant

(ANFA : net floor area of the zones serviced by central system)Remaining demand via heat generating device of the heating system:

Heat storage:indirectly heated storage (standing), setup outside the thermal claddingHeat distribution:with circulation, p constant, pump laid out if required, for thereference case, the length and the position of the pipelines is to be assumedas in the buildings to be constructed.

4.2 Hot water - local system

Electric flow heater, one filling station and 6 m pipe length per device

5.1 Ventilation and air conditioning

- Exhaust air system

Specific power input ventilator P SFP = 1.0 kW/(m/s)

5.2 Ventilation and air conditioning- Delivery and

exhaust air systemwithout postheatingand coolingfunction

Specific power input- Fresh air fan P SFP = 1.5 kW/(m/s)- Exhaust fan P SFP

EnEV_2009_english version un-ufficial

Documents

Transcript of EnEV_2009_english version un-ufficial