EnEV_2009_english version un-ufficial
Transcript of EnEV_2009_english version un-ufficial
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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).
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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.
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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,
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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.
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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.
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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.
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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;
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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
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(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.
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(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
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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.
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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,
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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
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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-
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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.
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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.
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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
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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,
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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
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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,
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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
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(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
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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
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(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
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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 ].
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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
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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
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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).
(5) 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 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.
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(6) 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 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)
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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)
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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
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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.
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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.
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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.
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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.
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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,
the annual primary energy demand by 10.8 kWh/(ma) and the delivered energy
demand by 4 kWh/(ma),
c) when the energy demand for cooling is covered by renewable heat sinks (such as
ground probes, soil collectors, cisterns)
the annual primary energy demand by 2.7 kWh/(ma) and the delivered energy
demand by 1 kWh/(ma),
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).
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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
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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)
Heat transfer coefficient U = 0.35 W/(mK) U = 0.35 W/(mK)
1.4 Roof (if not under Line 1.5),top-floor ceiling, walls tolong pane of roof
Heat transfer coefficient U = 0.20 W/(mK) U = 0.35 W/(mK)
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
Level of light transmission of theglazing D65 = 0.76 D65 = 0.76
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
Level of light transmission of theglazing D65 = 0.48 D65 = 0.48
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
Level of light transmission of theglazing D65 = 0.59 D65 = 0.59
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
Level of light transmission of theglazing D65 = 0.78 D65 = 0.78
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)
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Line Component / System Parameter(for Lines 1.1 to 1.13)Reference design / value
(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.
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Line Component / System Parameter(for Lines 1.1 to 1.13)Reference design / value
(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