The need to transpose Directive 2010 /31/EU of the European Parliament and of the Council of 19 May 2010 on the energy efficiency of buildings, the Spanish legal order and the requirement laid down in the Directive the second final provision of Royal Decree 1027/2007 of 20 July, approving the Regulation of Thermal Installations in Buildings, to carry out a periodic review at intervals not exceeding five years of the requirement of energy efficiency, make it necessary to make a number of amendments to the current Regulation Thermal installations in buildings (known in practice by its acronym, RITE).

Directive 2010 /31/EU states in Article 8 that, for the purpose of optimising the energy consumption of buildings ' thermal installations, Member States shall lay down requirements for energy efficiency. general, correct installation and adequate sizing, control and adjustment of such facilities present in existing buildings.

Also, Directive 2010 /31/EU, in Article 14 on the inspection of heating installations, provides that Member States shall take the necessary measures to carry out a periodic inspection of the parts thereof. accessible from the facilities used to heat the buildings, such as the heat generator, the control system or the pump or the circulation pumps, when the rated useful power of their boilers is greater than 20 kW. That inspection shall include an assessment of the performance of the boiler and its size in comparison with the heating demand of the building. In addition, heating installations equipped with boilers with a nominal power of more than 100 kW shall be inspected at least every two years. In the same way, Article 15 provides that Member States shall take the necessary measures to ensure that the accessible parts of air-conditioning installations are inspected regularly with a nominal power of more than 12 kW. The inspection shall include an assessment of the performance of the air conditioning and its sizing in comparison with the cooling demand of the building.

On the other hand, the application of the RITE over the last five years has made it possible to identify those issues which require an update, either because they have become obsolete because of the evolution of the technique, or because of the the need to adapt to new requirements relating to energy saving and efficiency, or to establish more clearly and precisely what is intended, avoiding as far as possible different interpretations.

Therefore, the modifications established in this royal decree have the double purpose of incorporating into our legal order the obligations arising from the aforementioned Directive 2010 /31/EU, as regards the thermal installations of the buildings, and to update the current Regulation of Thermal Facilities in the Buildings, adapting it to the new needs of energy saving and efficiency.

For such purposes, it should be recalled that the RITE is configured as the basic normative instrument in which the energy efficiency and safety requirements to be met by the thermal installations in the buildings are regulated. to meet the demand for people's welfare and hygiene. Thus, the determinations at the service of the aforementioned safety requirement are dictated by the competition conferred by Article 12 (5) of Law 21/1992 of 16 July 1992 on Industry, which provides that the safety regulations at the level of the The State Government will approve the State Government, without prejudice to the fact that the Autonomous Communities, with legislative competence over industry, may introduce additional requirements on the same matters in the case of established facilities. on its territory.

On the other hand, Law 38/1999, of 5 November, of Ordination of the Building, establishes, within the basic requirements of the building relative to the habitability, the energy saving. The regulatory regulation of these requirements was initially carried out through the Technical Code of the Edification, approved by Royal Decree 314/2006, of March 17, which is the normative framework that establishes the basic requirements of quality of the buildings and their facilities. In turn, within the basic energy saving requirements, the performance of thermal installations whose regulatory development has been carried out through the RITE is established.

Finally, the new basic organic structure of the ministerial departments has been established by Royal Decree 1823/2011 of 21 December, which restructured the ministerial departments, and the Royal Decree Decree 1887/2011 of 30 December 2011 establishing the basic organic structure of the ministerial departments. Subsequently, these provisions have been developed by the corresponding real decrees of the organic structure of each department.

In particular, Royal Decree 344/2012, of 10 February, has developed the basic organic structure of the Ministry of Industry, Energy and Tourism, and Royal Decree 452/2012, of 5 March, has developed the organic structure Basic Ministry of Public Works.

This adjustment to the new structures and denominations is especially necessary in the case of the collegiate bodies, given that the doubts that may arise about their actual current composition, may create difficulties in terms of to its convocation and normal operation.

The restructurings mentioned make it necessary to proceed to the appropriate adaptations in the composition of the advisory commission for the thermal installations of the buildings, organically dependent of the Secretariat of State Energy from the Ministry of Industry, Energy and Tourism, which was created by Royal Decree 1027/2007 of 20 June, approving the Regulation of Thermal Facilities in Buildings.

In the handling of this royal decree, the formalities set out in Royal Decree 1337/1999 of 31 July, which regulates the referral of information in the field of technical regulations and regulations, have been complied with. rules on the services of the information society, in application of Directive 98 /34/EC of the European Parliament and of the Council of 28 March.

Likewise, in compliance with the provisions of Law 50/1997 of 27 November of the Government, during its processing this royal decree has been submitted to the mandatory hearing procedure through the publication of an announcement of the Secretary of State for Energy in the "Official Gazette of the State", and made available to the affected sectors in the electronic headquarters of the Ministry of Industry, Energy and Tourism.

In its virtue, on the proposal of the Minister of Industry, Energy and Tourism and the Minister of Development, with the prior approval of the Minister of Finance and Public Administrations, in agreement with the State Council and the deliberation of the Council of Ministers at its meeting on 5 April 2013,

DISPONGO:

Article first. Amendment of Part I 'General provisions' of the Building Regulations on Buildings, approved as an annex to Royal Decree 1027/2007 of 20 July.

Part I 'General provisions' of the Building Regulations on Buildings, approved as Annex to Royal Decree 1027/2007 of 20 July, is amended as follows:

One. Article 2 is worded as follows:

" Article 2. Scope.

1. For the purposes of the application of the RITE, fixed installations of air conditioning (heating, cooling and ventilation) and hot water production, designed to meet the demand for welfare, shall be considered as thermal installations. thermal and people's hygiene.

2. The RITE shall apply to thermal installations in new construction buildings and to thermal installations which are reformed in existing buildings, exclusively in respect of the reformed part, as well as in the case of the maintenance, use and inspection of all thermal installations, with the limitations set out therein.

3. A thermal installation reform shall be understood to mean any change in the thermal installation which involves a modification of the project or technical memory with which it was executed and registered. In this sense, reforms are considered to be included in any of the following cases:

(a) The incorporation of new air conditioning or hot water production subsystems or modification of existing ones.

b) Replacing a heat or cold generator with different characteristics.

c) The extension of the number of heat or cold generating equipment.

d) The change in the type of energy used or the incorporation of renewable energy.

e) The intended change of use of the building.

4. The replacement or replacement of a heat or cold generator with similar characteristics shall also be considered to be a reform for the purposes of applying the RITE, even if this does not entail a modification of the project or technical memory.

5. Irrespective of whether or not a change made in a thermal installation is considered to be a reform in accordance with the provisions of the previous paragraph, all products incorporated therein shall comply with the requirements relating to: conditions of equipment and materials in Article 18 of this Regulation.

6. The RITE shall not apply to the thermal installations of industrial, agricultural or other processes, in the part that is not intended to meet the demand for thermal well-being and hygiene of persons. "

Two. Article 18 (1) is worded as follows:

" 1. Equipment and materials shall comply with all the rules in force and apply to them and must be permanently incorporated into the buildings, depending on their intended use, bearing the CE marking, provided that their entry into force, in accordance with current regulations.

All products must comply with the requirements laid down in the implementing measures which are applicable to them in accordance with the provisions of Royal Decree 187/2011 of 18 February 2011 concerning the establishment of ecodesign requirements applicable to energy-related products. "

Three. A new paragraph 11 is added to Article 24 with the following wording:

" 11. The register provided for in paragraph 1 of this Article shall not be required in the case of replacement or replacement of heat or cold generation equipment in the case of generators of a nominal value of less than or equal to 70 kW, provided that the variation of the nominal power of the generator does not exceed 25 per cent of the nominal useful power of the replaced generator and the nominal useful power of the installed generator exceeds 70 kW.

The operator or user of the installation shall keep the documentation of the reform in accordance with the provisions of Article 25.5.c. This documentation shall include at least the invoice for the purchase of the generator and its installation, unless other industrial safety regulations requiring certification of the action are met, in which case certification shall be sufficient. required by such regulations. "

Four. Article 25 (5) is worded as follows:

" 5. The installation holder shall be responsible for the following actions:

a) Maintenance of thermal installation by a holding company enabled.

b) Mandatory inspections.

c) The preservation of the documentation of all the actions, be it maintenance, repair, reform or inspections carried out in the thermal installation or their equipment, including them in the Book of the Building, when the same exists. "

Five. Article 28 is worded as follows:

" Article 28. Maintenance certificate.

1. Each year, in cases where the maintenance contract is compulsory, the holding company and the maintenance director, where the latter's participation is required, shall take out the maintenance certificate, which shall be sent, if so determined, to the competent body of the Autonomous Community, with a copy of the same in possession of the holder of the installation, who shall incorporate it into the Book of the Building where it exists. The validity of the issued maintenance certificate shall be no more than one year.

2. The maintenance certificate, as established by the competent authority of the Autonomous Community, shall have at least the following content:

a) Identification of the installation, including the initial case number with which the installation was registered.

b) Identification of the holding company, the maintainer responsible for the installation and the maintenance manager, when the latter's participation is mandatory.

c) Express statement that the facility has been maintained in accordance with the Manual of Use and Maintenance and meets the requirements required in IT 3.

d) Summary of the annual consumption recorded: fuel, electrical energy, water for filling of the facilities, sanitary hot water, totalization of the individual meters of sanitary hot water and energy thermal.

e) Summary of annual contributions: thermal power of the production plant and renewable energies and/or cogeneration if any.

In the case of not being able to obtain the above data it will be justified in the maintenance certificate ".

Six. Article 29 is worded as follows:

" Article 29. Generalities.

1. Thermal installations shall be inspected for the purpose of verifying regulatory compliance.

2. The competent bodies of the Autonomous Community shall take the necessary measures to carry out the periodic inspections provided for in this Regulation. In addition, they may agree on any necessary inspections, which may be initial or those which they may establish on their own initiative, denunciation of third parties or unfavourable results in the register of the operations of the maintenance, in order to check and monitor compliance with this RITE throughout the life of the thermal installations in the buildings.

3. The facilities shall be inspected by staff of the departments of the competent bodies of the Autonomous Communities or by control bodies authorized for this regulatory field, or by qualified or accredited entities or agents. the competent bodies of the Autonomous Communities. The enabling as a control body, the qualification or accreditation of entities and agents for the conduct of technical inspections of installations, obtained in an autonomous Community shall allow for the carrying out of technical inspections. in any part of the national territory.

4. The competent bodies of the Autonomous Communities shall ensure that inspections of thermal installations are carried out by qualified or accredited experts independent of the facilities to be inspected, whether or not they are acting on their own behalf. as if they are employed by public entities or private undertakings, for which they may lay down requirements as regards their training or accreditation, in which case it shall make available to the public information on training programmes or accreditation.

5. Periodically, the competent bodies of the Autonomous Communities shall make available to the public up-to-date lists of qualified or accredited experts or accredited undertakings or entities offering the services of such experts. for the conduct of periodic inspections of thermal installations. These lists must include express mention that they may also be made by those included in the lists of the respective competent bodies of other Autonomous Communities. In the treatment and advertising of personal data of the experts corresponding to natural persons, the provisions of the Organic Law 15/1999 of 13 December, of Protection of Personal Data and its Development Regulation, approved by Royal Decree 1720/2007 of 21 December. '

Seven. Article 31 is worded as follows:

" Article 31. Periodic inspections of energy efficiency.

1. Thermal installations shall be inspected periodically over their useful life in order to verify compliance with the energy efficiency requirement of this RITE. IT 4 determines the facilities to be inspected regularly, as well as the content and time limits of these inspections, and the assessment criteria and measures to be taken as a result of these inspections, depending on the nature of the inspections. the installation.

2. Energy efficiency inspections shall be carried out independently by the entities or agents qualified or accredited by the competent authority of the Autonomous Community, freely chosen by the holder of the installation from among the enabled to perform these functions.

3. The competent bodies of the Autonomous Communities or the entities in which they have delegated the responsibility for the implementation of the independent control systems in accordance with Directive 2010 /31/EU under the supervision of the body The competent authority of the Autonomous Community shall make a random selection of at least a statistically significant percentage of the total inspection reports issued annually and subject them to verification.

4. The competent bodies of the Autonomous Communities shall inform the Ministries of Industry, Energy and Tourism and the Ministry of Public Works of the outcome of this external audit.

5. The competent bodies may, if they so decide, establish the conduct of such inspections by means of specific campaigns in the territory of their jurisdiction, and shall inform the owners or tenants of the buildings of the reports. inspection.

6. Existing installations for the entry into force of this RITE shall be subject to the regime and periodicity of the periodic energy efficiency inspections laid down in IT 4 and the technical conditions of the legislation under which it shall apply. were authorized.

If, on the occasion of this inspection, it was established that an existing installation does not meet the energy efficiency requirement, the competent bodies of the Autonomous Communities may agree that it will be in line with the regulations. "

Eight. Article 37 is worded as follows:

" Article 37. Requirements for the exercise of the activity.

For the exercise of professional installer or maintainer activity, companies must meet the following requirements and have the documentation that so credits:

(a) Dispose of the documentation identifying the provider, which in the case of a legal person, must be legally constituted and include in its social object the activities of assembly and repair of thermal installations in buildings and/or maintenance and repair of thermal installations in buildings.

b) Being discharged into the corresponding Social Security and current system in the fulfillment of the obligations of the system.

In the case of non-Community foreign natural persons, compliance with the provisions established in the current Spanish legislation on immigration and immigration.

(c) Have a professional civil liability insurance or other equivalent guarantee covering the damages that may arise from their actions, for a minimum amount of EUR 300,000.

d) Availability, at least, of an operator in template with professional meat of thermal installations of buildings.

e) Where appropriate, the company must provide, on the basis of the type of facilities to be installed, repaired or maintained, of certified personnel in accordance with the provisions of Royal Decree 795/2010 of 16 June 2010. which regulates the marketing and handling of fluorinated gases and equipment based on them, as well as the certification of the professionals handling them.

(f) For companies working with thermal installations subject to this Regulation and affected by Royal Decree 138/2011 of 4 February approving the Safety Regulation for Refrigeration Installations and its complementary technical instructions, and in accordance with its Articles 9, 11, and 14 the installation/maintenance undertaking shall have the technical means and materials of the I.F. 13, as well as the waste management plan and in the case of work with thermal installations which have a cold circuit classified as Level 2 refrigeration facility must have a professional civil liability insurance or other equivalent guarantee covering the possible damages resulting from its activity for a minimum amount of EUR 900,000, and also provide for Qualified Technician.

For the purposes of crediting compliance with the requirements of the installation or maintenance companies referred to in this Regulation, the documents from another Member State of which they are issued shall be accepted. (a) to the extent that such requirements are met, in accordance with the terms laid down in Article 17.2 of Law 17/2009 of 23 November on the free access to and pursuit of the activities of services. '

Nine. Article 42.1 (b) (b) is replaced by the following:

" b.1 It is understood that they have such knowledge that people who credit any of the following situations:

(...) "

Article 2. Amendment of Part II 'Technical Instructions' of the Building Regulations on Buildings, approved as an annex to Royal Decree 1027/2007 of 20 July.

Part II "Technical Instructions" of the Building Regulations on Buildings, approved as an annex to Royal Decree 1027/2007 of 20 July, is amended as follows:

One. IT 1.1.4.1.1 is worded as follows:

" IT 1.1.4.1.1 Generalities.

The thermal quality requirement of the environment is considered to be satisfied in the design and size of the thermal installation, if the parameters that define the thermal well-being, such as dry air temperature and operating, humidity relative, average radiant enclosure temperature, average air speed and turbulence intensity are maintained in the occupied zone within the values set below. '

Two. A new IT 1.1.4.1.4 is added with the following wording:

" IT 1.1.4.1.4 Other welfare conditions.

In the determination of welfare conditions in a building, other aspects described in the UNE-EN-ISO-7730 standard shall be taken into consideration and shall be assessed according to the calculation methods defined in that standard. as:

a) Molestims by air currents.

b) Vertical difference in air temperature. Stratification.

c) Hot and cold Soils.

d) Radiant temperature asymmetry. "

Three. IT 1.1.4.2.4 is worded as follows:

" IT 1.1.4.2.4 Filtering of the minimum outside air ventilation.

1. The exterior air of ventilation shall be properly filtered into the buildings.

2. The minimum filtration classes to be used, depending on the quality of the outdoor air (ODA) and the required indoor air quality (IDA), shall be as shown in table 1.4.2.5.

3. The external air quality (ODA) shall be classified according to the following levels:

ODA 1: Pure air that is only temporarily dirty (for example, pollen).

ODA 2: air with high concentrations of particles and, or of gaseous pollutants.

ODA 3: air with very high concentrations of gaseous pollutants (ODA 3G) and, or particles (ODA 3P).

Table 1.4.2.5 Filtering Classes

ODA 2

of the outside air	Quality of the inside air
	IDA 1	IDA 2	IDA 3	IDA 4
1	F9	F8	F7	F5
F7 + F9	F6 + F8	F5 + F7	F5 + F6
3		F7 + GF + F9	F5 + F7	F5 + F6

^* GF = Gas filter (carbon filter) and, or chemical or physico-chemical filter (photocatalytic) and will only be necessary in case of ODA 3 being reached by excess gases.

4. Pre-filters shall be used to keep the components of the air ventilation and treatment units clean, as well as to extend the life of the final filters. The pre-filters shall be installed at the entrance of the external air to the treatment unit, as well as in the return air inlet.

5. The final filters shall be installed after the treatment section and, where the premises are particularly sensitive to dirt (local where the contamination by mixture of particles, such as operating rooms or clean rooms, etc.), is to be avoided, after the drive fan, ensuring that the air distribution over the filter section is uniform.

6. In all filtration sections, except those in the outer air intake, the dry operating conditions (not saturated) shall be ensured.

7. The filter sections of the class G4 or lower for indoor air categories IDA 1, IDA 2 and IDA 3 shall only be allowed as additional sections as indicated in table 1.4.2.5.

8. Heat recovery devices must always be protected with a filter section, the class of which shall be recommended by the manufacturer of the recovery; in the absence of a recommendation, there shall be at least class F6.

9. In the reforms, where there is insufficient space for the installation of the air treatment units, the final filter indicated in table 1.4.2.5 shall be included in the heat retrievers. '

Four. The IT 1.1.4.2.5 Extraction air is worded as follows:

" IT 1.1.4.2.5 Extraction air.

1. Depending on the use of the building or local, the extraction air is classified into the following categories:

a) AE 1 (low level of pollution): air from the premises where the most important emissions of pollutants come from building and decoration materials, in addition to people.

The air that comes from premises where smoking is allowed is excluded. They are included in this section: offices, classrooms, meeting rooms, commercial premises without specific emissions, public spaces, staircases and corridors.

b) AE2 (moderate level of pollution): local air filled with more pollutants than the previous category, in which smoking is not prohibited.

They are included in this section: restaurants, hotel rooms, changing rooms, toilets, domestic kitchens (except extractor campaign), bars, warehouses.

c) AE3 (high level of pollution): air from premises with production of chemicals, moisture, etc.

They are included in this section: saunas, industrial kitchens, printers, rooms for smokers.

(d) AE 4 (very high level of pollution): air containing harmful substances and pollutants harmful to health at concentrations greater than those permitted in the interior air of the occupied zone.

They are included in this section: extraction of smoke campaigns, car parks, premises for handling of paints and solvents, premises where dirty lingerie is kept, local storage of food waste, local Continuous use smokers, chemical laboratories.

2. The service local extraction air flow rate will be at least 2 dm³/s per m² on the floor.

3. Only air of category AE 1, free of tobacco smoke, can be returned to the premises.

4. Category AE 2 air can be used only as transfer air from a local to service premises, toilets and garages.

5. Air in categories AE 3 and AE 4 cannot be used as recirculation or transfer air.

6. When the extraction of different categories is mixed, the whole will have the most unfavourable category; if the extractions are carried out independently, the expulsion to the outside of the air of the categories AE3 and AE4 cannot be common to the expulsion of air from categories AE1 and AE2, in order to avoid the possibility of cross-contamination. "

Five. Section 2 of IT 1.1.4.3.1 is worded as follows:

" 2. In cases not covered by the legislation in force, hot water shall be prepared at a temperature that is compatible with its use, taking into account losses in the pipeline network. '

Six. Section 2 of IT 1.2.2 is worded as follows:

" 2. Alternative procedure: it will consist of the adoption of alternative solutions, understood as those that deviate partially or totally from the proposals of this section, based on the direct limitation of the energy consumption of the installation thermal design.

Alternative solutions may be adopted, provided that it is documented that the projected thermal installation meets the technical requirements of this section because their performance is at least equivalent to those would be obtained by the direct application of the simplified procedure.

This will assess the energy consumption of the complete thermal installation or the subsystem in question, by using a method of calculation and its comparison with the energy consumption of a thermal installation which comply with the requirements of the simplified procedure.

The compliance with the minimum requirements will occur when the primary energy consumption and the carbon dioxide emissions of the evaluated installation, considering all its auxiliary systems, is less than or equal to that of the the installation that meets the requirements of the simplified procedure.

The rates of transition from the production of carbon dioxide emissions and primary energy consumption to be used in the production of these benchmarks shall be those published as a recognized document in the register. General of recognised documents of the RITE, in the electronic headquarters of the Ministry of Industry, Energy and Tourism. "

Seven. IT 1.2.4.1.2.1 is worded as follows:

" IT 1.2.4.1.2.1 Minimum energy performance requirements for heat generators.

1. The energy performance of heat generators shall be indicated in the project or technical memory.

2. For boilers, the yields at nominal useful power (Pn) expressed in kW, and with a partial load of 30 per cent (0,3-Pn) and the average water temperature in the boiler, shall be indicated in accordance with the provisions of Royal Decree 275/1995, of 24 February. The yields indicated in the following paragraphs correspond to boilers of nominal power up to 400 kW, boilers of more than 400 kW shall have a performance at least equal to that required for boilers of 400 kW.

3. Boilers fuelled by fuels whose nature corresponds to recoveries of effluents, by-products or waste, biomass, waste gases, and provided that they are not complied with, are excluded from complying with the minimum performance requirements of paragraph 2. emissions produced by the combustion gases comply with the applicable environmental regulations.

4. In the case of heat generators using biomass, the minimum instantaneous performance required shall be 80 per cent at full load, except for wood fuel stoves and inserts, the minimum performance of which shall be 65 per cent.

5. When the heat generator uses solid biofuels, only the instantaneous performance of the whole body of the combustion system-system of combustion for 100 percent of the nominal useful power-must be indicated for one of the biofuels. the solids that are expected to be used in their feed or, where appropriate, the mixture of biofuels.

6. The average water yield and temperature of the body set of generator-burner or body set of generation-system of combustion when biomass is used shall be indicated, at the maximum power demanded by the heating system and, in its Case, by the sanitary hot water preparation system.

7. The installation of individual boilers and gas heaters up to 70 kW of type B shall be prohibited in accordance with the definitions given in UNE-CEN/TR 1749 IN, except where they are located in premises which meet the requirements laid down for Machinery rooms. This prohibition does not affect B3x type devices.

8. In newly constructed buildings, boilers using fossil fuels for heating must have:

a) For gas:

1. Yield at nominal useful power and an average water temperature in the boiler of 70 ° C: η ≥ 90 + 2 log Pn.

2. Partial load performance of 0.3 • Pn and a water return temperature to the boiler of 30 ° C: η ≥ 97 + log Pn.

Control of the system shall be based on external temperature compensation probe and/or modulant thermostat, so that it modifies the temperature of the way to emitters by adapting them to the demand.

b) For gas oil:

1. Yield at nominal useful power and an average water temperature in the boiler of 70 ° C: η ≥90 + 2 log Pn.

2. Partial load performance of 0.3 • Pn and an average water temperature in the boiler equal to or greater than 40 ° C: η ≥86 + 3 log Pn.

9. The emitters shall be calculated for a mean emitter temperature of not more than 60 ° C.

10. In the case of installations which are reformed, the installation of heating boilers for fossil fuels not complying with the following characteristics shall be prohibited:

1. Yield at nominal useful power and an average water temperature in the boiler of 70 ° C: η > 90 + 2 log Pn.

2. Partial load performance of 0,3-Pn and an average water temperature in the boiler equal to or greater than 50 ° C: η > 86 + 3 log Pn.

11. Heat pumps shall meet the following requirements:

(a) Equipment of up to 12 kW of nominal useful power must be fitted with the energy labelling values (COP/SCOP) corresponding to the European legislation in force.

(b) Those equipment with a nominal power of more than 12 kW must be fitted with the energy labelling values (COP/SCOP) as determined by the European legislation in force, where the latter exists, or by entities of European certification.

(c) Manufacturers shall provide the tables of operation of the equipment at different temperatures in order to facilitate the assessment and energy performance of the installation.

d) The temperature of the water at the plant outlet must be kept constant when the load is varied, except for exceptions to be justified.

e) It shall be ensured that the maximum power in the equipment is obtained with the maximum jump of input and output temperatures set by the manufacturer, so that the flow of the heat-transfer fluid is minimal for that power maximum. This situation can be maintained in partial load if variable flow pumps are available to allow the flow rate to be adjusted for the thermal jump.

12. The remaining heat generators for which no specific performance requirements have been set in this paragraph, shall comply with the requirements set by the European regulations in force. "

Eight. IT 1.2.4.1.2.2 is worded as follows:

" IT 1.2.4.1.2.2 Power fractionation.

1. The necessary generators in number, power and appropriate types shall be provided, according to the expected thermal load profile.

2. Heat production plants equipped with generators using liquid or gaseous fuel shall comply with these requirements:

a) If the nominal power to install is greater than 400 kW, two or more generators will be installed.

(b) If the nominal power to be installed is equal to or less than 400 kW and the installation provides heating and hot water service, a single generator may be used provided that the power demanded by the Hot water service is equal to or greater than that of the minimum power step.

3. Solutions other than those set out in paragraph 2 of this IT may be adopted, provided that it is technically justified that the proposed solution is at least equivalent from the point of view of energy efficiency and in accordance with the laid down in Article 14 (2) (b) of this Regulation. In the reforms the number of boilers may be limited by the available space in which case the equipment that best suits the different demands will be selected, for example condensing boilers with modulant burners, etc.

4. Heat generators powered by fuels whose nature corresponds to recoveries of effluent, by-products or waste, such as biomass, gases, are excluded from complying with the requirements laid down in paragraph 2 of this IT. residual and whose combustion is not affected by environmental impact limitations.

5. Modular gas generators shall be considered to be a single generator, except where they have an automatic system that indepenges the hydraulic circuit in such a way as to achieve the partial bias of the assembly.

6. Direct expansion reversible heat pumps shall be considered as a single generator when they consist of a single external unit and one or more internal units.

7. In the case of reversible heat pumps/heat pumps for the production of hot/cold water, a single generator shall be considered to meet the following two requirements, consisting of a single electrical connection and having an evaporator. hydraulically connected to any other production equipment. "

Nine. Section 3 of IT 1.2.4.1.3.2 is worded as follows:

" 3. For installations with a nominal power of more than 70 kW, if the lower limit of the demand could be lower than the lower limit of the partial machine, a system designed to cover that demand should be installed during its time of duration over a day. The same system shall be used to limit the peak of the maximum daily demand. '

Ten. Paragraph 1 of I T 1.2.4.1.3.3 is worded as follows:

" 1. Air cooled refrigeration machinery capacitors shall be sized for a dry external temperature equal to the most demanding percentile level plus 3 ° C. '

Once. Section 1 of IT 1.2.4.2.1.1 is worded as follows:

" 1. All pipes and fittings, as well as equipment, appliances and tanks of thermal installations shall have thermal insulation when they contain:

(a) refrigerated fluids with less temperature than the room temperature of the place they run;

b) fluids with a temperature greater than 40 ° C when installed in non-heated premises, including corridors, galleries, skids, car parks, machine rooms, false ceilings and technical floors, Excluding pipes for cooling towers and discharge pipes for cold compressors, except where they are within the reach of persons. '

Twelve. In IT 1.2.4.2.1.2 a new paragraph 9 is added and paragraphs 1 and 7 are amended as follows:

" 1. In the simplified procedure the minimum thickness of thermal insulation, expressed in mm, according to the outer diameter of the pipe without isolating and the temperature of the fluid in the net and for a material with thermal conductivity of Reference to 10 ° C of 0,040 W/ (m.K) must be those indicated in the following tables 1.2.4.2.1 to 1.2.4.2.5.

(...)

7. The minimum insulation thickness of pipes with an external diameter less than or equal to 25 mm and less than 10 m in length, counted from the connection to the general network of pipes to the terminal unit, and which are embedded in partitions and floors or installed in inner canfins, shall be 10 mm, avoiding, in any case, the formation of condensations.

In the connections of domestic refrigeration equipment or solar energy equipment, reduced space of curves and joints will allow a reduction of 10 mm over the minimum thicknesses.

(...)

9. In any case, the formation of surface and interstitial condensations in cold installations and sanitary cold water networks shall be avoided. "

Thirteen. Table 1.2.4.2.3 and table 1.2.4.2.4 are amended in IT 1.2.4.2.1.2, which are then amended as follows:

" Table 1.2.4.2.3 Minimum insulation (mm) of pipes and fittings carrying cold fluids running through the interior of buildings.

	diameter (mm)	Minimum fluid temperature (ºC)
		> -10 ... 0	> 0...10	> 10
D ≤ 35	30	25	20
35 < D ≤ 60	40	30	20
60 < D ≤ 90	40	30	30
90 < D ≤ 140	50	40	30
< D	50	40	30

" Table 1.2.4.2.4 Minimum insulation (mm) of pipes and fittings that transport cold fluids running through the exterior of buildings.

Exterior diameter (mm)	Minimum fluid temperature (° C)
	> -10 ... 0	> 0...10	> 10
D ≤ 35	50	45	40
35 < D ≤ 60	60	50	40
60 < D ≤ 90	60	50	50
90 < D ≤ 140	70	60	50
140 < D	70	60	50

Fourteen. In the I T 1.2.4.2.1.2 below, table 1.2.4.2.4, the following table is added 1.2.4.2.5 "Minimum insulation (mm) of refrigeration circuits for air conditioning depending on the route of the pipes":

" Table 1.2.4.2.5 Minimum insulation (mm) of refrigeration circuits for air conditioning * depending on the route of the pipes.

	diameter (mm)	Buildings (mm)	External buildings (mm)
D ≤ 13	10	15
13 < D < 26	15	20
26 < D < 35	20	25
35 < D < 90	30	40
90	40	50

* Excluded industrial cold processes.

If the outer course of the pipeline is greater than 25 m, these thicknesses must be increased to the immediate higher commercial thickness, with an increase in no case less than 5 mm.

Fifteen. Section 2 of IT 1.2.4.2.2 is worded as follows:

" 2. When the nominal power to install heat or cold generation is less than or equal to 70 kW, the minimum insulation thicknesses for ducts and fittings of the air drive network are valid:

a) For a material with reference thermal conductivity at 10 ° C of 0,040 W/ (m.K), the following shall be:

i. Indoors 30 mm.

ii. Outdoor 50 mm.

b) For thermal conductivity materials other than the above, the determination of the minimum thickness is considered to be valid by applying the equations in paragraph 1.2.4.2.1.2.

c) The minimum length of isolation of final branch lines of less than 5 metres length is reduced to 13 mm if there is a demonstrable physical impairment of space.

For powers greater than 70 kW it must be documented that the losses are not greater than those obtained with the thicknesses indicated above. "

Sixteen. IT 1.2.4.2.4 is worded as follows:

" IT 1.2.4.2.4 Pressure drops on components.

1. The maximum permissible pressure drops shall be as follows:

Heating Batteries: 40 Pa.

Dry Cooling Batteries: 60 Pa.

Cooling and Diswetting Batteries: 120 Pa.

Acoustic Attenuators: 60 Pa.

Air Terminal Units: 40 Pa.

Air Return Grids: 20 Pa.

Being some of the pressure drops function of the component's capabilities, these values can be exceeded.

2. The cooling and dehumidification batteries must be designed with a frontal speed such that it does not lead to water drops. The use of droplet separators is prohibited except in special cases to be justified. '

seventeen. IT 1.2.4.2.6 is worded as follows:

" IT 1.2.4.2.6 Energy efficiency of electric motors.

1. The selection of electric motors shall be justified on the basis of energy efficiency criteria.

2. The minimum returns for electric motors shall be those laid down in Commission Regulation (EC) No 640/2009 of 22 July 2009 implementing Directive 2005 /32/EC of the European Parliament and of the Council as regards the ecodesign requirements for electric motors.

3. The following engines are excluded: for special environments, encapsulated, non-ventilated, engines directly coupled to pumps, submersible, hermetic compressors and others.

4. The efficiency shall be measured according to the standard UNE-EN 60034-2. '

Eighteen. Paragraphs 2 and 6 of IT 1.2.4.3.1 are worded as follows:

" 2. The use of all-nothing controls is limited to the following applications:

a) Temperature and pressure safety limits.

b) Terminal unit fan speed regulation.

c) Control of thermal emission of individual facility generators.

d) Control of the temperature of environments served by unit devices, of a nominal useful power less than or equal to 70 kW.

e) Control of the operation of the ventilation of machine rooms.

(...)

6. The variation in the temperature of the water according to the external conditions, or to adapt the generation to the environmental conditions, will be done in the secondary circuits of the standard type heat generators and in the same generator in the Case of low temperature and condensing generators, up to the limit set by the manufacturer. "

nineteen. IT 1.2.4.3.3 is worded as follows:

" IT 1.2.4.3.3 Control of indoor air quality in air conditioning facilities.

1. Ventilation and air conditioning systems, centralised or individual, shall be designed to control the internal environment, from the point of view of indoor air quality.

2. Indoor air quality shall be controlled by one of the methods listed in Table 2.4.3.2.

Table 2.4.3.2 Internal air quality control.

Category	Type	Description
		The system works continuously.
-C2	Manual control.	The system works manually, controlled by a switch.
IDA-C3	Control by time.	The system works according to a certain schedule
IDA-C4	Control by presence.	The system works with a presence signal (lights, infrared, etc.)
IDA-C5	Control by Occupation.	The system works depending on the number of people present.
IDA-C6	Direct control.	The system is controlled by sensors that measure indoor air quality parameters (CO2 or VOCs).

3. The IDA-C2, IDA-C3 and IDA-C4 methods shall be used in premises not designed for permanent human occupation.

4. The IDA-C5 and IDA-C6 methods shall be used for large-occupancy premises, such as theatres, cinemas, function rooms, sports venues and the like. '

Twenty. IT 1.2.4.4 is worded as follows:

" IT 1.2.4.4 Consumptions of consumption.

1. Any thermal installation which may serve more than one user shall have a system which allows the distribution of the costs for each service (heat, cold and hot water) between the different users in the case of water. Sanitary hot may be a volumetric meter. The planned system, installed in the section of the connection to each unit of consumption, will allow to regulate and measure the consumption, as well as to interrupt the services from the outside of the premises.

In all air, or variable refrigerant flow facilities, the system for user consumption control shall be defined by the project design or the technical memory editor in the project itself, or in the memory installation technique.

The solar installations of more than 20 m₂ of opening surface will have a system of measurement of the final energy supplied, in order to be able to verify the compliance of the program of energy management and the periodic energy efficiency inspections specified in IT 3.4.3 and in IT 4.2.1.

Thermal solar energy installations in which solar energy is delivered to different users through a primary, may dispense with individual accounting, provided there is a control system for solar energy. the energy provided by the solar thermal installation centrally.

The design of the solar energy accounting system should allow the user of the installation to check directly, visually and unequivocally the correct operation of the installation, so that the installation can be controlled periodically the production of the installation.

2. Thermal installations of a nominal useful power greater than 70 kW, in refrigeration or heating, shall have devices capable of measuring and recording the consumption of fuel and electrical energy separately from the consumption due to other uses of the rest of the building.

3. Devices shall be provided for the measurement of the thermal energy generated or demanded in central power plants of a nominal value greater than 70 kW, in cooling or heating. This device may also be used to modulate the production of thermal energy depending on the demand. When a health hot water service is available, a device for measuring the energy shall be available in the primary of the production and in the recirculation.

4. Thermal installations of a nominal useful power in refrigeration greater than 70 kW shall have a device for measuring and recording the electrical energy consumption of the refrigeration plant (refrigeration machinery, towers and water pumps). (a) in the form of a system for the measurement of the energy consumption of the other equipment of the conditioning system.

5. Heat and cold generators of a nominal useful power greater than 70 kW shall have a device to record the number of hours of operation of the generator.

6. The electric power pumps and fans of the engine greater than 20 kW shall have a device to record the operating hours of the equipment.

7. Refrigerated compressors of more than 70 kW of nominal useful power shall have a device to record the number of their boots. "

Twenty-one. IT 1.2.4.5.1 is worded as follows:

" IT 1.2.4.5.1 Free cooling by outside air.

1. The air-conditioning subsystems of the air type, with a nominal power of more than 70 kW under cooling conditions, shall have a free cooling subsystem outside the air.

2. In the air conditioning systems of the type all air is valid the design of the sections of the gates according to paragraphs 6.6 and 6.7 of the standard UNE-EN 13053 and UNE-EN 1751:

a) Maximum front speed in the air intake and ejection ports: 6 m/s.

b) Temperature efficiency in the mixing section: greater than 75 percent.

3. In air-to-air air-conditioning systems, free cooling shall be obtained by means of water from cooling towers, preferably in the closed circuit, or, in the case of use of air-water refrigeration machines, by means of use of batteries placed hydraulically in series with the evaporator.

4. In both cases, the need to reduce the freezing temperature of water by the use of glycol solutions in water shall be assessed.

5. In any event and in accordance with the provisions of Article 14 (2) of this royal decree, it may be justified, because of the difficulty of achieving this, that any of the aspects set out in this technical instruction are not met. "

Twenty-two. Paragraph 2 of IT1.2.4.5.2 is worded as follows:

" 2. An adiabatic cooling apparatus shall be installed on the side of the expelled air, unless it is justified, with an increase in the efficiency of the recovery, that the results of reduction of CO emissions are exceeded._2."

Twenty-three. IT 1.2.4.6 is worded as follows:

" IT 1.2.4.6 Use of renewable and residual energy.

IT 1.2.4.6.1 Contribution of renewable or residual heat for the thermal production of the building.

1. In new or reformation buildings, with a forecast of thermal demand, part of the thermal energy needs arising from this demand will be covered by the incorporation of systems for the use of renewable heat or residual.

2. These systems will be designed to achieve the primary energy savings and CO₂ emissions targets set out in the Technical Code of the Edification. The selection and design of the solution shall take into account the energy balance and economic profitability criteria.

3. The determination of the step coefficients of the production of CO₂ and of primary energy shall be carried out in accordance with paragraph 2 of the IT1.2.2.

4. Renewable and residual heat sources may be integrated into the building's own thermal generation or be accessible through a district thermal power distribution network.

IT 1.2.4.6.2 Renewable or residual heat contribution for thermal demands of indoor pools.

1. In the pools covered, part of the thermal needs shall be covered by the incorporation of renewable or residual heat harvesting systems.

2. The selection and design of these systems will follow the same criteria as in IT 1.2.4.6.1.

IT 1.2.4.6.3 Renewable or residual heat contribution for outdoor pool heating.

For the heating of water from outdoor swimming pools only renewable or residual energy sources may be used; for this latter case, it shall be taken into account that the design has not been carried out exclusively for this purpose.

IT 1.2.4.6.4 Climatization of open spaces.

The air conditioning of open spaces can only be realized through the use of renewable or residual energies. Conventional energy for the generation of heat and cold for air conditioning of these spaces cannot be used. "

Twenty-four. IT 1.2.4.7.3 is worded as follows:

" IT 1.2.4.7.3 Concurrent action of fluids with opposite temperature.

1. Maintenance of thermo-hygrometric conditions of a thermal zone is not permitted by:

a) successive cooling and heating processes; or

b) simultaneous action of two fluids with temperature of opposite effects;

2. Except for the above prohibition, provided that the solution adopted is justified, in the following cases, where:

a) is made by a free power source or is recovered from the condenser of a cold equipment;

b) is imperative for maintaining relative humidity within the required margins;

c) it is necessary to keep the premises conditioned with positive pressure with respect to the adjacent premises;

d) require simultaneous air flow rates of antagonistic temperatures to maintain the minimum air flow of ventilation;

e) the air mixture takes place in two different areas of the same environment. "

Twenty-five. Section 2 of IT 1.3.4.1.1 is worded as follows:

" 2. Heat generators shall be equipped with a flow detection system that prevents the operation of the flow detection system if it does not flow through the minimum flow rate, unless the manufacturer specifies that it does not require minimum circulation. '

Twenty-six. Section 3.b of IT 1.3.4.1.2.6 is worded as follows:

" b) Open combustion chamber and natural draught boilers.

The free space on the boiler front shall be at least 1 m, with a minimum height of 2 m free of obstacles.

Between boilers, as well as the extreme boilers and the side and bottom walls, there must be a free space of at least 0,5 m which can be reduced in the models in which the maintenance of the boilers and their thermal insulation permit. The manufacturer's recommendations should be taken into account.

In the case where the boilers to be installed are of the mural type and/or modular forming a boiler battery or when the side walls of the boilers to be installed do not require access, the distance between them may be reduced, taking into account the precise space to be able to perform the unmounting operations of the envelope and the maintenance of the enclosure.

With solid fuel boilers, the distance between them and the chimney shall be equal, at least, to the size of the boiler.

Boilers of solid fuels in which accessibility to the household is required, for fuel loading or distribution, shall have a front free space equal to at least one and a half times the depth of the boiler.

Solid biofuel boilers in which the ash removal is manual, shall have a front free space equal to at least one and a half times the depth of the boiler. "

Twenty-seven. Paragraphs 3 and 5 of IT 1.3.4.1.3.2 are worded as follows:

" 3. Heat generators of rated thermal power equal to or less than 400 kW, having the same configuration for the evacuation of combustion products, may have the common evacuation line to several generators, provided that the sum of the power is equal to or less than 400 kW. For open combustion chamber generators and natural draught, installed in cascade, the auxiliary branch, prior to its connection to the common conduit, shall have a vertical ascending stretch of height equal to or greater than 0,2 m.

(...)

5. The chimneys shall be designed and calculated according to the procedures described in UNE 123001, UNE-EN 13384-1 and UNE-EN 13384-2 when they are modular and UNE 123003 when they are self-supporting. However, fireplaces which are designed using other methods shall be considered valid, provided that their suitability for the project of the installation is justified. '

Twenty-eight. It is amended as follows: " IT 1.3.4.1.4.", which is worded as follows:

" IT 1.3.4.1.4 Storage of solid biofuels.

1. Installations with a rated capacity of less than or equal to 70 kW or with a storage capacity of less than or equal to 5 tonnes shall, at least, be equipped with containers or storage tanks. The rest of the solid biofuel-fired facilities must include a storage site inside or outside the building, intended exclusively for this use.

2. Where the place of storage is situated outside the building, it may be constructed on surface or underground, and specific containers of biofuel may also be used, and a suitable system for extraction and transport.

3. In new buildings the minimum capacity for storage of biofuels will be sufficient to cover the consumption of 15 days.

4. Provision should be made for a procedure for emptying the storage of biofuels in case it is necessary for the performance of maintenance or repair work or in situations of fire risk.

5. In new buildings the place of solid biofuel storage and the engine room must be located in different premises and with the openings for the transport from storage to the heat generators equipped with the appropriate elements to prevent the spread of fires from one to the other.

6. In existing thermal installations which are reformed, where a division cannot be carried out in two separate premises, the storage tank shall be located at a distance from the boiler of more than 0,7 m and must exist between the generator heat and storage a wall with fire resistance in accordance with the current fire protection regulations.

7. The walls, floor and roof of the storage site shall not allow moisture leaks, waterproofing them if necessary.

8. The walls and doors of the warehouse must be able to withstand the pressure of the biofuel. Likewise, the fire resistance of the delimiters and structural elements of the storage of biofuels will be the one that determines the regulations of fire protection in force. The warehouses must have systems for detecting and extinguishing fires.

9. Electrical installations within the warehouse are not allowed.

10. When a pneumatic system is used for the transport of the biomass, it shall have a ground intake.

11. When using pneumatic storage filling systems, it should:

a) A system of protection of the wall against abrasion derived from the tapping of biofuels and to prevent its disintegration by impact should be installed in the impact zone.

b) Two openings, one of connection to the filling hose and another of air outlet to prevent overpressure and to allow the aspiration of the driven powder during the filling operation. Solutions other than that set out in accordance with the specific circumstances and with the provisions of Article 14 (2) (b) of this Regulation may be used.

12. Where storage filling systems are used by direct discharge through floodgates at ground level, they must consist of the necessary safety elements to prevent falls within the storage. '

Twenty-nine. IT 1.3.4.2.2 is worded as follows:

" IT 1.3.4.2.2 Power.

1. The power of the circuits shall be carried out by means of a device which shall be used to replenish the water losses. The device, called a disconnector, will be able to prevent the flow of water back safely in the event of a pressure drop in the public network, creating a discontinuity between the circuit and the same public network.

Before this device a closing valve, filter, and counter will be available in the order indicated. The filling shall be manual, and a presostat shall also be installed to act an alarm and to stop the equipment.

In the section connecting the closed circuits to the feeding device an automatic relief valve shall be installed which shall have a minimum diameter DN 20 and shall be at a pressure equal to the maximum of service at the point of connection plus 0.2 to 0.3 bar, always less than the test pressure.

The individual mixed boilers up to 70 kW, which will have the corresponding CE marking, are exempted from these requirements.

2. The minimum diameter of the connections according to the nominal useful power of the installation shall be chosen according to table 3.4.2.2.

Table 3.4.2.2 Power connection diameter.

Heat DN

Heat DN (mm)	DN (mm)
P ≤ 70	15	20
70 < P ≤ 150	20	25
150 < P ≤ 400	25	32
400 < P	32	40

3. If the water is mixed with an additive, the solution shall be prepared in a tank and placed in the circuit by means of a pump, either manually or automatically. '

Thirty. IT 1.3.4.2.7 is worded as follows:

" IT 1.3.4.2.7 battering ram.

1. To avoid the battering of ram produced by the abrupt closure of a valve, from DN100 the butterfly valves will carry out multiplier.

2. In larger diameters than DN32 the use of simple clapite retention valves is prohibited.

3. In larger diameters than DN32 and up to DN150, disk or disk retention valves may be used with return spring.

4. In larger diameters than DN150 the check valves will be disc, or motorized with adjustable acting time. "

Thirty-one. IT 1.3.4.2.12 is worded as follows:

IT 1.3.4.2.12 Terminal Units.

" All water terminal units shall have closing valves at the entrance and exit of the carrier fluid, as well as a manual or automatic device, in order to modify the thermal input, one of the valves is specifically intended for system balancing. "

Thirty-two. The IT 3.3 is amended as follows:

" IT 3.3 PREVENTIVE MAINTENANCE PROGRAM

1. Thermal installations shall be maintained in accordance with the operations and periodicities contained in the preventive maintenance programme as set out in the "Manual of Use and Maintenance" where it exists. The periods shall be at least those indicated in Table 3.1 according to the use of the building, the type of apparatus and the rated power:

Table 3.1 Preventive maintenance operations and their periodicity.

Usos

	Housing	Restors uses
24.4 kW ≤ Pn	5 years	2 years
24.4 kW < Pn ≤ 70 kW	annual
annual
Gas murals 70 kW ≤ Pn	2 years	annual
heating installations 70 kW ≤ Pn	annual
Conditioning 12 kW ≤ Pn	4 years	2 years
Air conditioning 12 kW < Pn ≤ 70 kW	2 years	annual
Power installations greater than 70 kW	Monthly	monthly	monthly

In facilities with a nominal power capacity up to 70 kW, with continuous remote monitoring, the periodicity can be increased up to 2 years, provided the safety and energy efficiency conditions are guaranteed.

In all cases the specifications of the equipment manufacturers will be taken into account.

For installations of a nominal power capacity less than or equal to 70 kW when there is no 'Manual of use and maintenance', the facilities shall be maintained in accordance with the professional criteria of the holding company. For guidance in Table 3.2, preventive maintenance operations are indicated, the periodicities correspond to those indicated in Table 3.1, the biomass and solar thermal energy installations will be adapted to the operations and periods of table 3.3.

Table 3.2 Preventive maintenance operations and their periodicity.

Healthcare hot water and heating installation

Review of exclusive devices for the production of ACS: Pn ≤ 24,4 kW.

Review of exclusive equipment for the production of ACS: 24,4 kW < Pn ≤ 70 kW.

Checking and cleaning, if applicable, boiler smoke circuit.

Checking and cleaning, if applicable, of smoke and chimney ducts.

Cleaning, if applicable, of the boiler burner.

Review of the expansion vessel.

Review of water treatment systems.

Closing seal between burner and boiler seal.

Checking water levels on circuits.

Checking security items.

Review and cleaning of water filters.

Health hot water preparation system review.

Review of the state of thermal insulation.

Review of the automatic control system.

Installation of air conditioning

Cleansing the evaporators.

Cleaning the capacitors.

Drain, cleaning, and treatment of the cooling tower circuit.

Checking the tightness and levels of refrigerant and oil in fridges.

Review and cleaning of air filters.

Review of evaporative wetting and cooling devices.

Review and cleaning of heat recovery devices.

Review of water-air terminal units.

Review of air distribution terminal units.

Reviewing and cleaning drive units and air return.

Review of stand-alone equipment.

For installations of a nominal useful power greater than 70 kW when there is no "Manual of use and maintenance" the contracted maintenance company shall draw up a "Manual of use and maintenance" which it shall deliver to the operator of the installation. The operations in the different components of the installations shall be for installations of a useful power greater than 70 kW as shown in Table 3.3.

2. It is the responsibility of the holding company or the maintenance director, when the latter's participation is required, the updating and permanent adequacy of the same to the technical characteristics of the installation.

Table 3.3 Preventive maintenance operations and their periodicity.

1. Cleaning the evaporators: t.

2. Cleaning of capacitors: t.

3. Drainage, cleaning and treatment of the cooling tower circuit: 2 t.

4. Verification of the tightness and levels of refrigerant and oil in refrigeration equipment: m.

5. Checking and cleaning, if applicable, of a boiler smoke circuit: 2 t.

6. Checking and cleaning, if applicable, of smoke and chimney ducts: 2 t.

7. Cleaning of the boiler burner: m.

8. Expansion vessel review: m.

9. Review of water treatment systems: m.

10. Refractory material check: 2 t.

11. Check for closure between burner and boiler: m.

12. General review of gas boilers: t.

13. General review of diesel boilers: t.

14. Checking water levels in circuits: m.

15. Pipe circuit sealing check: t.

16. Check for interdiction valve seal: 2 t.

17. Checking for security items: m.

18. Water filter review and cleaning: 2 t.

19. Air filter review and cleaning: m.

20. Thermal exchange battery review: t.

21. Review of wetting and evaporative cooling devices: m.

22. Review and cleaning of heat recovery devices: 2 t.

23. Air-to-air terminal units review: 2 t.

24. Air Distribution Terminal Units Review: 2 t.

25. Review and cleaning of drive units and air return: t.

26. Autonomous equipment review: 2 t.

27. Pump and fan review: m.

28. Review of the sanitary hot water preparation system: m.

29. Thermal isolation status review: t.

30. Automatic control system revision: 2 t.

31. Solar thermal energy installation: *.

32. Checking the storage status of solid biofuel: S *.

33. Opening and closing of the folding container in solid biofuel facilities: 2t.

34. Ash cleaning and removal in solid biofuel facilities: m.

35. Visual control of the biomass boiler: S*.

36. Checking and cleaning, if appropriate, of a circuit of fumes from boilers and pipes of smoke and fireplaces in biomass boilers: m.

37. Review of safety elements in biomass installations: m.

38. Revision of the duct network according to the UNE 100012: t standard.

39. Review of environmental quality according to standard UNE 171330: t.

S: once every week.

S *: These operations can be performed by the user himself, with the prior advice of the maintainer.

m: once a month; first at the start of the season.

t: once per season (year).

2 t: twice a season (year); one at the beginning of the same and one at the middle of the use period, provided there is a minimum difference of two months between the two.

* Maintenance of these facilities will be performed in accordance with the provisions of Section HE4, Minimum Solar Contribution of Hot Water of the Technical Code of Building. "

Thirty-three. Paragraphs 2 and 3 of IT 3.8.2 are amended as follows:

" 2. Where energy is not required for air heating or cooling the values shall be governed exclusively by comfort criteria in accordance with the requirements of IT 1.1.4.1.2.

3. The temperature limits of paragraphs 1 and 2 shall be without prejudice to the requirements laid down in Annex III to Royal Decree 486/1997 of 14 April 1997 laying down minimum health and safety requirements in respect of the job.

These temperature limitations will not have to be met by those enclosures that justify the need to maintain special environmental conditions or have specific regulations that establish it. In this case, there must be a physical separation between this enclosure with the adjacent premises that are obliged to maintain the conditions set out in paragraph 1 and 2. '

Thirty-four. IT 4.2.1 is worded as follows:

" IT 4.2.1 Inspections of heating and hot water systems.

1. Heating and hot water systems which have heat generators of a rated useful power equal to or greater than 20 kW shall be regularly inspected, excluding systems intended solely for the production of water Hot sanitary of up to 70 kW of nominal useful power.

2. The inspection of the heating and hot water system shall be carried out on the accessible parts thereof. The inspection carried out by the UNE-EN 15378 standard shall be valid for the purposes of this obligation. This inspection shall include:

a) Analysis and evaluation of the performance and sizing of the heat generator compared to the thermal demand to be met by the installation.

In periodic inspections of energy efficiency, the nominal useful power performance shall be not less than 80%.

Once the evaluation of the heat generator sizing is performed, it will not have to be repeated unless there has been any change in the system or thermal demand of the building.

b) Circulation pumps.

c) Distribution system, including its isolation.

d) Issuers.

e) Regulatory and control system.

f) Gas evacuation system from combustion.

g) Verification of the correct operation of the boiler burner, that the fuel is the one established for combustion by the burner and, in the case of solid biofuels collected in the standard UNE-EN 14961, which is correspond to those set by the manufacturer of the heat generator.

h) Installation of renewable energy and cogeneration, if existing, and its contribution to the production of hot water and heating, and the minimum solar contribution in the production of hot water.

i) For installation of a nominal useful power greater than 70 kW, verification of the results of the energy management program set out in IT.3.4, to verify its performance and the evolution of the results.

3. After completion of the inspection, a report shall be issued which shall include the status of the facility as well as recommendations to improve in terms of the cost-effectiveness of the energy efficiency of the inspected installation. recommendations may be incorporated into the building's energy efficiency certificate.

The recommendations may be based on a comparison of the energy efficiency of the installation inspected with that of the best available viable installation and with that of a similar type of installation in which all relevant components achieve the level of energy efficiency required by the applicable legislation. '

Thirty-five. IT 4.2.2 is worded as follows:

" IT 4.2.2 Inspection of air conditioning system systems.

1. Air conditioning systems which have a nominal useful power cold generator installed equal to or greater than 12 kW shall be regularly inspected.

2. The inspection of air conditioning facilities shall be carried out on the accessible parts thereof. The inspection carried out by the UNE-EN 15239 and UNE-EN 15240 standards shall be valid for the purposes of this obligation. This inspection shall include:

a) Analysis and evaluation of the performance and sizing of the cold generator compared to the cooling demand to be met by the installation.

In periodic inspections of energy efficiency the Refrigeration Efficiency Coefficient (EER) will have a value of not less than 2.

Once the evaluation of the cold generator sizing is performed, it will not have to be repeated unless there has been any change in the cooling system or in the cooling demand of the building.

b) Circulation pumps.

c) Distribution system, including its isolation.

d) Issuers.

e) Regulatory and control system.

f) Ventilators.

g) Air distribution systems.

h) Installation of solar, renewable energy and/or cogeneration, if any, which will comprise the assessment of the contribution of the same to the cooling system.

i) For the installation of a nominal useful power exceeding 70 kW, verification of the results of the energy management programme set out in IT 3.4 to verify its performance and the evolution of the results.

3. Following the completion of the inspection, a report shall be issued which shall include the status of the facility as well as recommendations to improve the energy efficiency of the inspected installation in terms of profitability. recommendations may be incorporated into the building's energy efficiency certificate.

The recommendations may be based on a comparison of the energy efficiency of the installation inspected with that of the best available viable installation and with that of a similar type of installation in which all relevant components achieve the level of energy efficiency required by the applicable legislation. '

Thirty-six. IT 4.3.1 is worded as follows:

" IT 4.3.1 Periods of inspections of heating and hot water systems.

Heating and hot water systems, the heat generator of which has a rated useful power installed equal to or greater than 20 kW, shall be inspected at the frequency indicated in Table 4.3.1. the nominal useful power of the installation assembly ".

Table 4.3.1 Periods of inspections of heating and hot water systems.

Other.

nominal useful power [kW]	Energy Type	Inspection Frequency
20 ≤ P ≤ 70	Any energy.	Every 5 years.
70	Gases and renewables.	.
		2 years.
Other.
Other.
Other.

Thirty-seven. IT 4.3.2 is worded as follows:

" IT 4.3.2 Periods of air conditioning system inspections.

Air conditioning systems whose cold generator has a rated useful power installed equal to or greater than 12 kW shall be inspected every 5 years. "

Thirty-eight. The following terms and definitions in Appendix 1 are deleted. Terms and definitions:

" ODA 1: Pure air that can contain solid particles (p. e. pollen) on a temporary basis.

ODA 2: air with high concentrations of particles.

ODA 3: air with high concentrations of gaseous pollutants.

ODA 4: Air with high concentrations of gaseous pollutants and particles.

ODA 5: Air with very high concentrations of gaseous pollutants and particles.

rated thermal power: maximum power which, as determined and guaranteed by the manufacturer, can supply a continuous operating equipment, adjusting to the useful returns declared by the manufacturer. "

Thirty-nine. The following terms and definitions are added in Appendix 1:

1. After "Solid Biofuels":

" Caldera: pressure equipment in which heat from any source of energy is transferred to the thermal uses of the building by means of a closed water circuit. Equipment based on internal or external combustion engines, cogeneration or heat pump equipment is not included in this definition. "

2. After "Urban Heating and Cooling":

" Hot water heater for gas, called gas heater: any apparatus dedicated exclusively to the production of hot water in which the heat from the combustion of gaseous fuels, is transferred directly by means of an open circuit to the water of consumption.

Hot Water Heater for gas by accumulation, gas heater with an integrated water storage tank with thermal conditions of use.

Instantaneous hot water heater for gas is the gas heater that performs the heating according to the water flow extracted.

Residual Heat: Heat which need to be evacuated to ensure the operation of any process and which can be fully or partially taken advantage of as useful heat; in particular the need to evacuate to ensure the operation of the thermodynamic cycle of electrical or mechanical energy production (in cogeneration equipment), or heat pumps and which can also be fully or partially taken advantage of as useful heat. "

3. After "Control Bodies":

" ODA 1: Pure air that is only temporarily dirty (for example, pollen).

ODA 2: air with high concentrations of particles and, or of gaseous pollutants.

ODA 3: air with very high concentrations of gaseous pollutants (ODA 3G) and, or particulate matter (ODA 3P). "

4. After "rated thermal power":

" Nominal useful power (expressed in kW) or rated thermal power: the maximum heat output which, as determined and guaranteed by the manufacturer, can be supplied in continuous operation, adjusting to useful yields declared by the manufacturer. '

5. After "performance":

" Useful performance (expressed as a percentage): the ratio between the calorific flow transmitted to the boiler water and the product of the lower calorific value at constant fuel pressure by the consumption expressed in amount of fuel per unit of time. "

6. After "Occupied Zone":

" Thermal zone: it is the set of premises in which their temperatures can be considered identical, being attended by the same air conditioning subsystem. At each site there may be control systems that adjust the thermal input. "

Forty. Appendix 2 is worded as follows:

" APPENDIX 2

Reference rules

This appendix, for practical reasons and to facilitate its periodic update, is included in the set of rules referenced in the IT.

UNE-EN

UNE-EN

UNE-EN

	Number	Part	Year
	UNE-EN	378		2001	Chiller Systems and Pumps heat. Security and environmental requirements
UNE-EN	378	1	2008 + A1:2011	Cooling systems and heat pumps. Safety and environmental requirements. Part 1: Basic requirements, classification definitions, and choice criteria
UNE-EN	378	2	2008 + A1:2009	Cooling systems and heat pumps. Safety and environmental requirements. Part 2: Design, manufacturing, testing, marking and documentation
UNE-EN	378	3	2008	Cooling systems and heat pumps. Safety and environmental requirements. Part 3: Installing "in situ" and protecting people
UNE-EN	378	4	2008	Cooling systems and heat pumps. Safety and environmental requirements. Part 4: Operation, Maintenance Recovery and Recovery.
UNE-CEN/TR	1749 IN			European Schema for Classification of Appliances Using Gaseous Fuels according to the form of evacuation of combustion products (types)
UNE-EN ISO			1999	Building Ventilation. Air terminal units. Aerodynamic tests of gates and valves
	1752		1998	Ventilation for buildings. Design criteria for from indoor environment.
UNE-CR	1725 IN		2008	Building Ventilation. Design criteria for the indoor environment
UNE-EN	1856	1	2004	Chimneys. Requirements for metal fireplaces. Part 1: Modular fireplaces
1856	1	2010	Chimneys. Requirements for metal fireplaces. Part 1: Modular fireplaces
1856	1/1 M	2005	Chimneys. Requirements for metal fireplaces. Part 1: Modular fireplaces
1856	2	2005	Chimneys. Requirements for metal fireplaces. Part 2: Interior pipelines and metal junction pipes
UNE-EN	1856	2	2010	fireplaces. Requirements for metal fireplaces. Part 2: Interior pipelines and metal junction pipes
UNE-EN ISO	7730		2006	Thermal ambient ergonomics. Analytical determination of the interpretation of thermal well-being for the calculation of PMV and PPD indices and local thermal well-being criteria (ISO 7730:2005)
	UNE-ENV	12097		1998	Building Ventilation. Conduits. Requirements for components intended to facilitate the maintenance of duct systems
UNE-EN	12097		2007	Building Ventilation. Conduits. Requirements relating to components intended to facilitate the maintenance of duct systems
UNE-ENV	12108 ERRATUM		2002	Pipeline systems in plastic materials. Recommended practice for installation inside the structure of the building of hot and cold water pressure channeling systems intended for human consumption
12108			2011	12108	2011	The_table_table_izq"> Pipeline Systems in Plastic Materials. Recommended practice for the installation inside the structure of the building of hot and cold water pressure channeling systems intended for human consumption
12237			2003	Building Ventilation. Conduits. Metal sheet metal circular resistance and leakage
UNE-EN	12237 ERRATUM		2007	Building Ventilation. Conduits. Resistance and leakage of sheet metal circular pipes
UNE-EN ISO	12241		1999	Thermal insulation for building equipment and industrial installations. Calculation method.
UNE-EN	12502	3	2005	Protection gives metal materials against corrosion. Recommendations for the assessment of the risk of corrosion in water distribution and storage systems. Part 3: Factors that influence hot galvanized ferrous materials
UNE-EN	12599	2002	2002	Building Ventilation Test procedure and measurement methods for the reception of the installed ventilation and air conditioning systems
UNE-EN	1212599		2001	Building Ventilation. Test procedure and measurement methods for the reception of the installed ventilation and air conditioning systems
UNE-EN	13053		2003	Building Ventilation. Air treatment units. Classification and performance of drives, components, and sections.
UNE-EN	13053		2007	Building Ventilation. Air treatment units. Sorting and performing units, components, and sections.
UNE-EN	13180		2003	Building Ventilation. Conduits. Mechanical dimensions and requirements for flexible pipes.
UNE-EN	13384	1	2003	fireplaces. Methods of thermal calculation and dynamic fluids. Part 1: Chimneys that are used with a single appliance
UNE-EN	13384	1/AC	2004	Chimneys. Methods of thermal calculation and dynamic fluids. Part 1: Chimneys that are used with a single appliance
	13384	1	2002/A1: 2005	Chimneys. Thermal and dynamic fluid calculation methods. Part 1: Chimneys that are used with a single appliance
UNE-EN	13384	1	2003 + A2:2011	Chimneys. Thermal and fluid-dynamic calculation methods. Part 1: Chimeneaswhich service a single heating appliance
UNE-EN	13384			Chimneys. Thermal and fluid-dynamic calculation methods. Part 2: Chimneys that service more than one heat generator
UNE-EN	13384	2	2005 + A2:2011	Chimneys. Thermal and fluid-dynamic calculation methods. Part 2: Chimneys servicing more than one heating appliance
UNE-EN	13403		2003	Building Ventilation. Non-metallic ducts. Network of insulating material irons pipes.
UNE-EN	13410		2002	Suspended radiation heating devices using gaseous fuels. Local ventilation requirements for non-domestic use
UNE-EN	13410 ERRATUM		2011	Suspended radiation heating devices that use gaseous fuels. Local ventilation requirements for non-domestic use
UNE-EN	13779		2005	Non-residential building ventilation. Enclosure ventilation and conditioning system performance requirements
UNE-EN	13779			2008	Ventilation of non-residential buildings. Enclosure ventilation and conditioning system performance requirements
UNE-EN	14336		2005	Building Heating Systems. Installation and commissioning of water heating systems
UNE-EN ISO	16484			Building Automation and Control Systems (BACS). Part 3: Functions. (ISO 16484-3:2005)
	20324		1993	Protection Grades provided by wrappers (IP Code). (CEI 529:1989).
	20.324	1 M	2000	Protection Grades provided by wrappers (IP Code)
	20324 Erratum		2004	Protection Grades provided by wrappers (IP Code)
UNE-EN	50194		2001	Electrical appliances for gas detection fuels in domestic premises. Test methods and operating requirements
UNE-EN	50194	Erratum	2005	Electrical appliances for the detection of combustible gases in domestic premises. Test methods and operating requirements
UNE-EN	50194	1	2011	Electrical appliances for the detection of combustible gases in domestic premises. Part 1: Test methods and operating requirements
UNE-EN	50194	2	2007	Electrical appliances for the detection of combustible gases in domestic locales. Part 2: Electrical equipment for continuous operation in fixed installations of recreational vehicles and similar sites. Additional testing methods and operating requirements
	50244 + Erratum		2001	Electrical appliances for the detection of combustible gases in domestic locales. Selection, usage, and maintenance guide
	50244		2011	Electrical appliances for the detection of combustible gases in domestic locales. Selection, installation, use, and maintenance
UNE-EN	60034	2	1997	rotating electrical machines. Part 2: Methods for the determination of losses and performance of rotary electric machines from tests excluding machines for traction vehicles
60034		1998	1998	Rotating Electrical Machines. Part 2: Methods for the determination of losses and performance of rotary electric machines from tests excluding machines for traction vehicles
60034		2/A2	1997	Rotating Electrical Machines. Part 2: Methods for the determination of losses and performance of rotary electric machines from tests excluding machines for traction vehicles
60034		2009	2009	Rotating Electrical Machines. Part 2-1: Standard methods for the determination of losses and performance from tests (except traction vehicle machines)
	60601		2006	machines and stand-alone generation machines heat or cold or for cogeneration, which use gaseous fuels
60670		6	2005	Gas receiving facilities supplied at a maximum operating pressure (MOP) less than or equal to 5 bars. Part 6: Requirements for configuration, ventilation and evacuation of combustion products in premises intended to contain appliances to gas
	60670 ERRATUM	6	2008	Gas receiving facilities supplied to a maximum operating pressure (MOP) of less than or equal to 5 bar. Part 6: Requirements for configuration, ventilation and evacuation of combustion products in premises intended to contain appliances to gas
UNE-EN			2002	Electrical appliances for detection and measurement of the flammable gases. Part 1: General requirements and test methods
UNE-EN	61779	1/A11	2004	Electrical appliances for the detection and measurement of flammable gases. Part 1: General requirements and test methods
UNE-EN	61779	4	2002	Electrical appliances for the detection and measurement of flammable gases. Part 4: Operating requirements for equipment in Group II, being able to indicate a volumetric fraction of up to 100% of the lower limit of explosiveness
	123003		2011	Calculation, design, and installation of fireplaces autoportants.
	123001		2012	Calculation, design, and installation of modular fireplaces, metal and plastic

Article 3. Amendment of the Regulation of the Thermal Installations in buildings and of Royal Decree 1027/2007 of 20 July, which approves it, for adaptation to the new basic organic structure of the Ministries of Industry, Energy and Tourism and of the Ministry of Development.

One. Royal Decree 1027/2007 of 20 July, approving the Regulation on Thermal Facilities in Buildings, is amended as follows:

" (a) The mention made in the second final provision to the Ministers of Industry, Tourism and Trade and Housing is replaced by the mention of the Ministers of Industry, Energy and Tourism and of Promotion.

(b) The mention made in the third final provision to the Minister for Industry, Tourism and Trade is replaced by the mention of the Minister for Industry, Energy and Tourism. "

Two. The Regulation on Thermal Installations in Buildings, approved by Royal Decree 1027/2007 of 20 July, is amended as follows:

" (a) The particulars referred to in Articles 6.1, 7.1, 7.2, 39.3, 39.4, 44, 45.5 and 47.3 of the Regulation, to the Ministry of Industry, Tourism and Trade, are replaced by references to the Ministry of Industry, Energy and Tourism.

(b) The entries referred to in Articles 6.1, 45.5 and 47.3 of the Regulation to the Ministry of Housing are replaced by references to the Ministry of Public Works.

(c) The particulars referred to in Articles 7.1, 7.2, 44 and 47.5 of the Regulation to the General Secretariat of Energy shall be replaced by references to the Secretary of State for Energy.

(d) Paragraph 2, paragraph 3 (a) and Article 46 (4) of the Regulation are worded as follows:

" 2. The Chair of the Secretary of State for Energy shall be President, who shall be replaced in the event of absence, vacancy or illness by the First Vice-President, and in the absence of the Vice-President, by the Vice-President.

First Vice President will be the head of the General Directorate of Architecture, Housing and Soil of the Ministry of Public Works, and will be second vice president of the Institute for the Diversification and Savings of the Energy.

3. The representatives appointed by each of the following entities shall be members of the Commission:

(a) On behalf of the General Administration of the State and with the category of Subdirector General or assimilated:

i. A representative of the Secretary of State for Energy of the Ministry of Industry, Energy and Tourism.

ii. A representative of the Directorate-General for Energy Policy and Mines of the Ministry of Industry, Energy and Tourism.

iii. A representative of the Directorate-General for Industry and Small and Medium-sized Enterprises of the Ministry of Industry, Energy and Tourism.

iv. Two representatives of the General Directorate of Architecture, Housing and Soil of the Ministry of Public Works.

v. A representative of the Institute for Energy Diversification and Savings.

vi. A representative of the Institute of Construction Sciences "Eduardo Torroja" of the Superior Council of Scientific Research.

vii. A representative of the Ministry of Agriculture, Food and Environment's Directorate-General for Quality and Environmental Assessment and Environment.

viii. A representative of the National Consumer Institute of the Ministry of Health, Social Services and Equality.

(...)

4. He will act as Secretary, with voice and vote, the voice on behalf of the Secretary of State for Energy of the Ministry of Industry, Energy and Tourism. ""

Single transient arrangement. Replacement of sanitary hot water heaters.

For a period of five years from the entry into force of this royal decree, the replacement of gas-fired hot water heaters with power of up to 24.4 kW, located inside the premises inhabited, may be made by open combustion chamber gas heaters and natural draught.

Final disposition first. Incorporation of European Union law.

This royal decree incorporates into Spanish law the regulation of thermal installations in buildings provided for in Directive 2010 /31/EU of the European Parliament and of the Council of 19 May 2010 on the energy efficiency of buildings.

Final disposition second. Entry into force.

This royal decree will enter into force on the day following its publication in the "Official State Gazette".

Given in Madrid, April 5, 2013.

JOHN CARLOS R.

The Vice President of the Government and Minister of the Presidency,

SORAYA SAENZ DE SANTAMARIA ANTON