CEN/TR 16947-2:2016

SLOVENSKI STANDARD
01-maj-2018
Energijske lastnosti stavb - Sistem upravljanja stavb - 2. del: Razlaga in
utemeljitev prEN 16947-1:2015 - Moduli M10-12
Building Management System - Part 2: Accompanying prEN 16947-1:2015 - Modules
M10-12
Ta slovenski standard je istoveten z: CEN/TR 16947-2:2016
ICS:
35.240.67 Uporabniške rešitve IT v IT applications in building
gradbeništvu and construction industry
97.120 Avtomatske krmilne naprave Automatic controls for
za dom household use
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

CEN/TR 16947-2
TECHNICAL REPORT
RAPPORT TECHNIQUE
September 2016
TECHNISCHER BERICHT
ICS 91.120.10; 97.120
English Version
Building Management System - Part 2: Accompanying
prEN 16947-1:2015 - Modules M10-12

This Technical Report was approved by CEN on 11 April 2016. It has been drawn up by the Technical Committee CEN/TC 247.

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

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2016 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TR 16947-2:2016 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Introduction . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Symbols and abbreviations . 6
5 Method description . 6
5.1 Effect of building automation and control (BAC) and technical building management
(TBM) . 6
5.2 Control Strategy . 8
5.3 Rationale . 8
5.4 Time steps . 9
5.4.1 General . 9
5.4.2 Assumption . 9
5.4.3 Data input — Item 1 . 9
5.4.4 Simplified input . 9
5.4.5 Calculation information . 10
5.5 List of functions covered by the Method . 10
5.5.1 Setpoint Management (BMS function 1) . 10
5.5.2 Runtime Management (BMS function 2) . 11
5.5.3 Sequencing of multiple generators (BMS function 3) . 11
5.5.4 Local energy production and renewable energies (BMS function 4) . 13
5.5.5 Heat recovery and heat shifting (BMS function 5) . 13
5.5.6 Smart grid interactions and peak shaving (BMS function 6) . 14
6 Method selection . 14
7 Information on the accompanying spreadsheet . 14
Bibliography . 15

European foreword
This document (CEN/TR 16947-2:2016) has been prepared by Technical Committee CEN/TC 247
“Building Automation, Controls and Building Management”, the secretariat of which is held by SNV.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document is currently divided into the following parts:
— prEN 16947-12015, Building Management System — Module M10-12 [currently at Enquiry stage];
— CEN/TR 16947-2:2016, Building Management System —Part 2: Accompanying prEN 16947-1:2015
Modules M10-12.
Introduction
The CENSE project, the discussions between CEN and the Concerted action highlighted the high page
count of the entire package due to a lot of “textbook” information. This resulted in flooding and
confusing the normative text.
A huge amount of informative contents shall indeed be recorded and available for users to properly
understand, apply and nationally adapt the EPB standards.
The detailed technical rules CEN/TS 16629 Detailed Technical Rules ask for a clear separation between
normative and informative contents:
— to avoid flooding and confusing the actual normative part with informative content;
— to reduce the page count of the actual standard;
— to facilitate understanding of the package.
Therefore each EPB standard shall be accompanied by an informative technical report, like this one,
where all informative contents is collected.
Table 1 shows the relative position of tis standard within the EPB set of standards.
Table 1 — Position of this standard within the EPD set of standards
Over-arching Building Technical Building System
(as such)
sub1 M1 M2  M3 M4 M5 M6 M7 M8 M9 M10 M11
1 General General General
Common
terms and
Building
2 definitions; Needs
Energy Needs
symbols, units
and subscripts
(Free) Indoor
Maximum
Conditions
3 Application Load and
without
Power
Systems
Ways to Ways to Ways to
Express Express Express
Energy Energy Energy
Performance Performance Performance
Building
Heat Transfer
Functions and Emission and
5 by
Building control
Transmission
Boundaries
Submodule
Descriptions
Descriptions
Descriptions
Heating
Cooling
Ventilation
Humidification
Dehumidification
Domestic Hot waters
Lighting
Building automation
and control
PV, wind, .
Over-arching Building Technical Building System
(as such)
sub1 M1 M2  M3 M4 M5 M6 M7 M8 M9 M10 M11
Building
Heat Transfer
Occupancy Distribution
6 by Infiltration
and Operating and control
and Ventilation
Conditions
Aggregation of
Energy
Internal Heat Storage and
7 Services and
Gains control
Energy
Carriers
Building Solar Heat Generation
Partitioning Gains and control
Load
Calculated Building
dispatching
9 Energy Dynamics
and operating
Performance (thermal mass)
conditions
Measured Measured Measured
10 Energy Energy Energy
Performance Performance Performance
11 Inspection Inspection Inspection
Ways to
Express
12  BMS        x
Indoor
Comfort
External
13 Environment
Conditions
Economic
Calculation
Submodule
Descriptions
Descriptions
Descriptions
Heating
Cooling
Ventilation
Humidification
Dehumidification
Domestic Hot waters
Lighting
Building automation
and control
PV, wind, .
1 Scope
This Technical Report refers to prEN 16947-1:2015, Building Management System — Module M10-12.
It contains information to support the correct understanding, use and national adaption of
prEN 16947-1:2015.
This Technical Report does not contain any normative provision.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
FprEN 15232-1:2016, Energy performance of buildings — Part 1: Impact of Building Automation,
Controls and Building Management — Modules M10-4,5,6,7,8,9,10
prEN 15316-2:2015, Heating systems and water based cooling systems in buildings — Method for
calculation of system energy requirements and system efficiencies — Part 2: Space emission systems
(heating and cooling)
prEN 16947-1:2015, Building Management System — Module M10-12
EN ISO 7345:1995, Thermal insulation - Physical quantities and definitions (ISO 7345:1987)
EN ISO 13790, Energy performance of buildings - Calculation of energy use for space heating and cooling
(ISO 13790)
prEN 16947-1:2015, Building Management System — Module M10-12
prEN ISO 52000-1:2015, Energy performance of buildings — Overarching EPB assessment — Part 1:
General framework and procedures (ISO/DIS 52000-1:2015)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN ISO 7345:1995,
prEN ISO 52000-1:2015 and prEN 16947-1:2015 (the accompanied EPB standard) apply.
4 Symbols and abbreviations
For the purposes of this document, the symbols given in prEN ISO 52000-1:2015 and
prEN 16947-1:2015 (the accompanied EPB standard) apply.
5 Method description
5.1 Effect of building automation and control (BAC) and technical building management
(TBM)
The key-role of Building Automation and Control and TBM is to ensure the balance between the desired
human comfort - which shall be maximal, and energy used to obtain this goal - which shall be minimal!
The scope of BAC and TBM covers in accordance with their role from one side all Technical Building
Systems (where the effect of the BAC is used in the calculation procedures) and from another side the
global optimization of the energy performance of a building.
We could identify several categories of controls:
— Technical building systems specific controls; these controllers are dedicated to the physical chain of
transformation of the energy, from generation, to storage, distribution and emission. We find them
in the matrix starting with the modules M3-5 to M9-5 and finishing with M3-8 till M9-8. We could
consider that it exist one controller by module, but some time one controller do the control among
several modules. More often, these controllers are communicating between them via a
standardized open bus, such as BACnet, KNX or LON
— BAC used for all or several technical building systems who do multidiscipline (heating, cooling,
ventilation, DHW, lighting…) optimization and complex control functions. For example, one of them
is INTERLOCK, a control function who avoids heating and cooling in same time.
— If all Technical Building System are used in the building, we have (depending of the size of the
building) a Technical Building Management System. Specific global functions are implemented here,
necessary to reach the key-role mentioned above. Usually, in this case, an interrelation with the
building as such (Module M2) will occur, mainly to take in consideration the building needs; for
example due to outside temperature, taken into account the inertia of the building when the control
will reach the set point in a room.
In a control system dedicated to a building, who is BAC and TBM we can distinguish three main
characteristics:
— Control Accuracy,
— Control Function,
— Control Strategy.
Technical Building management systems are implemented to realize an overall building operation
strategy by interdisciplinary orchestration of building energy systems (heating, cooling, ventilation,
lighting) whereas systems are controlled by BAC functions. Further information about control accuracy
and control functions can be found in the technical report CEN/TR 15232-2. EN 15232 describes two
approaches how to evaluate the contribution of building automation and control on the energy
performance of buildings. This Technical report is dedicated to control strategy and Technical building
management issues covered by EN 16947-1.
5.2 Control Strategy
The Control Strategy is applied to achieve a given level of control to reach a goal. Optimal control
strategies deliver a desired level of control at a minimum cost. A Control Strategy could consist by a
Control Function or a group of Control Functions. An example of a Control Strategy consist by a Control
Function is Optimum Start, Optimum Stop, Night Set Back described in the standards EN 12098-1 and
EN 12098-3. The Timer function is described in EN 12098-5.
An example of a Control Strategy who is realized by a group of Control Functions is the Control Strategy
used by Intermittence. This function uses several Control Functions, Operation Modes, Optimum Start-
Stop and Timer in same time. All elements together are called either Building Profile or User Pattern.
Usually, to implement such Building profile, a TBM is a prerequisite.
The most important Control Strategy described and implemented in EN 15232-1 is Demand Oriented
Control. Usually these strategies implement the sense of the energy flow (from GENERATION to
EMISSION) with flow of calculation (from building needs to delivered energy). Usually for this complex
Control Strategy, a TBM is necessary with a distributed specific control for each Technical Building
System who communicates in system architecture via a communication standardized bus such as
BACnet, KNX or LON.
More clear, this Demand Oriented Control works as follows: When the comfort is reach in the Emission
area, the controller from the Emission sent the message to the controller in charge of Distribution to
stop to distribute energy, who sent the message to the controller in charge of Storage either to store the
energy and if the Storage cannot store more energy sent the message to the controller in charge with
...