SIST EN 14336:2025

Heating systems in buildings - Installation and commissioning of water based heating systems

This document specifies the requirements for the installation and commissioning of water-based heating, water-based cooling, and heating of domestic hot water (DHW) systems in buildings with a maximum operating temperature of 105 °C.
This document is applicable to the commissioning of systems as a whole, in cases of new systems, renovations and replacement of equipment.
This document does not apply to superheated water systems or steam systems and it does not apply to the specific commissioning requirements for individual components (e.g. how to set fuel/air ratio on a burner). Also, it does not apply to the installation or commissioning of attached systems (e.g. air conditioning, domestic hot water distribution, ventilation systems).
This document specifies only technical requirements but it does not specify any commercial or contractual arrangements between parties.

Heizungsanlagen in Gebäuden - Installation und Abnahme der Warmwasser - Heizungsanlagen

Dieses Dokument legt die Anforderungen an die Installation und Abnahme wassergeführter Heizungs- und wassergeführter Kühlanlagen sowie häuslicher Anlagen zur Erwärmung von Warmwasser (DHW) in Gebäuden mit einer maximalen Betriebstemperatur von 105 °C fest.
Dieses Dokument ist auf die Abnahme von Anlagen als Ganzes bei neuen Anlagen, Renovierungen und Austausch der Geräte anwendbar.
Dieses Dokument gilt nicht für Heißwasser- oder Heißdampfsysteme und es gilt nicht für die spezifischen Abnahmeanforderungen für einzelne Komponenten (z. B. Einstellen des Brennstoff-Luft-Verhältnisses an einem Brenner). Außerdem gilt es nicht für die Installation und die Abnahme von zugeschalteten Anlagen (z. B. Klimaanlagen, Hauswasseranlagen, Verteileranlagen, Lüftungsanlagen).
Dieses Dokument legt nur die technischen Voraussetzungen fest, aber nicht das vertragliche Verhältnis zwischen Auftraggeber und Auftragnehmer (Planer und Ausführenden).

Systèmes de chauffage dans les bâtiments - Installation et commissionnement des systèmes de chauffage à eau

Le présent document spécifie les exigences relatives à l’installation et au commissionnement des systèmes de chauffage à eau, des systèmes de refroidissement à eau, et des systèmes de production d’eau chaude sanitaire des bâtiments fonctionnant avec une température maximale de 105 °C.
Le présent document s'applique au commissionnement des systèmes dans son ensemble, en cas d'installation de nouveaux systèmes, de rénovations et de remplacement d'un équipement.
Ce document ne s'applique pas aux systèmes d'eau surchauffée ou aux systèmes de chauffage à la vapeur, ni aux exigences spécifiques de commissionnement des composants individuels (par exemple, comment régler le rapport combustible/air sur un brûleur). De plus, il ne s'applique pas en cas d'installation ou de commissionnement des systèmes connexes (par exemple, systèmes de conditionnement d’air, de production d’eau chaude sanitaire, de ventilation).
Le présent document spécifie uniquement les spécifications techniques, mais il ne spécifie pas les accords contractuels ou commerciaux entre les parties.

Ogrevalni sistemi v stavbah - Vgradnja in zagon toplovodnih sistemov

General Information

• Status: Published
• Public Enquiry End Date: 19-Jun-2024
• Publication Date: 10-Jun-2025
• ICS: 91.140.10 - Central heating systems
• Technical Committee: OGS - Heating for buildings
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 11-Jun-2025
• Due Date: 16-Aug-2025
• Completion Date: 11-Jun-2025
• Ref Project: EN 14336:2025 - Heating systems in buildings - Installation and commissioning of water based heating and cooling systems

Relations

• Replaces: SIST EN 14336:2005 - Heating systems in buildings - Installation and commissioning of water based heating systems
• Effective Date: 01-Jul-2025

Standards Content (Sample)

SLOVENSKI STANDARD
01-julij-2025
Nadomešča:
SIST EN 14336:2005
Ogrevalni sistemi v stavbah - Vgradnja in zagon toplovodnih sistemov
Heating systems in buildings - Installation and commissioning of water based heating
systems
Heizungsanlagen in Gebäuden - Installation und Abnahme der Warmwasser -
Heizungsanlagen
Systèmes de chauffage dans les bâtiments - Installation et commissionnement des
systèmes de chauffage à eau
Ta slovenski standard je istoveten z: EN 14336:2025
ICS:
91.140.10 Sistemi centralnega Central heating systems
ogrevanja
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 14336
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2025
EUROPÄISCHE NORM
ICS 91.140.10 Supersedes EN 14336:2004
English Version
Heating systems in buildings - Installation and
commissioning of water based heating and cooling
systems
Systèmes de chauffage dans les bâtiments - Installation Heizungsanlagen in Gebäuden - Installation und
et commissionnement des systèmes de chauffage à eau Abnahme der Warmwasser-Heizungsanlagen
This European Standard was approved by CEN on 21 April 2025.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 14336:2025 E
worldwide for CEN national Members.

Contents Page
European foreword . 5
Introduction . 6
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 8
4 Installation . 11
4.1 Preparation for the installation . 11
4.1.1 Documentation . 11
4.1.2 Site preparation. 12
4.2 Inventory and inspection of incoming goods . 12
4.3 Handling of materials . 12
4.4 Storage of materials . 12
4.5 Installation of components . 13
4.5.1 General. 13
4.5.2 Heat generation . 13
4.5.3 Heat distribution – piping and pumps . 14
4.5.4 Heat emission . 15
4.5.5 Control and monitoring . 15
4.5.6 Thermal insulation . 16
4.6 Site inspections during the installation work . 16
4.7 Changes during the installation process . 16
5 Pre-functional checks . 17
5.1 Objective . 17
5.2 General check . 17
5.3 Equipment and component check . 17
5.4 Electrical checks . 18
6 Pressure test . 18
6.1 General. 18
6.2 Hydraulic test . 20
6.3 Pneumatic test . 20
6.4 Tightness test . 21
6.5 Load test . 22
6.5.1 Hydraulic test . 22
6.5.2 Pneumatic test . 22
7 System cleaning . 22
7.1 General. 22
7.2 Simple and dynamic flushing . 23
7.2.1 General. 23
7.2.2 Simple flushing . 23
7.2.3 Dynamic flushing . 24
7.3 Mechanical cleaning . 25
7.4 Use of chemicals . 26
8 System filling and venting . 26
8.1 General. 26
8.2 Frost precautions . 27
8.3 Use of chemicals . 27
8.4 Filling report . 27
9 Balancing water flow rates . 28
10 Functional testing . 29
10.1 General . 29
10.2 Testing and settings of individual devices . 29
10.3 Testing the sequences of operation . 29
11 Handover . 30
11.1 Objective . 30
11.2 Documents for operation, maintenance and use . 30
11.3 Instructions on operation and use . 30
11.4 Hand over documentation . 30
Annex A (informative) List of test and control activities . 32
A.1 General . 32
A.2 Contents of the list . 32
A.3 Sample list of test and control activities . 34
Annex B (informative) Installation site inspection . 35
B.1 General . 35
B.2 Installation site inspection report . 35
B.3 Sample site inspection report . 36
Annex C (informative) PRE-COMMISSIONING CHECKS . 37
C.1 General . 37
C.2 Equipment and major components check-lists . 37
C.2.1 Pump . 37
C.2.2 Boiler . 38
C.2.3 Heat pump . 40
C.2.4 Fan-coil unit . 41
C.2.5 Control valves . 42
C.3 Electrical checks .
...