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BS EN 12977-5:2018

BS EN 12977-5:2018

$189.07

Thermal solar systems and components. Custom built systems – Performance test methods for control equipment

Published By Publication Date Number of Pages
BSI 2018 48
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This European Standard specifies performance test methods for control equipment. Furthermore, this document contains requirements on accuracy, durability and reliability of control equipment.

The tests described in this document are limited to electrically activated components delivered with or for the system by the final supplier. For the purposes of this document controller and control equipment for solar heating systems and auxiliary heaters, if part of the system, are restricted to the following:

  1. Controllers as:

    1. system clocks, timers and counters;

    2. differential thermostats;

    3. multi-function controllers.

  2. Sensors as:

    1. temperature sensors;

    2. irradiance sensors (for short wave radiation);

    3. pressure sensors;

    4. level sensors;

    5. flow meters;

    6. heat meters.

  3. Actuators as:

    1. pumps;

    2. solenoid and motor valves;

    3. relays.

  4. Combinations of controllers, sensors and actuators listed above.

    An additional objective of the procedures described in this document is to verify control algorithms and, together with the accuracy of sensors, to determine control parameters. In addition to verifying the functioning of a controller, its equipment and actuators, the determined parameters may be used for numerical system simulations.

    Typically, electrical anodes are not part of the control equipment and are not controlled by the control equipment. However, because they are electrical appliances, electrical anodes are included in this document.

    This document is valid for control equipment of solar heating systems for the purpose of hot water preparation and/or space heating. If the solar system is connected to or part of a conventional heating system, the validity is extended to the entire system. In combination with the standards EN 12976-1:2017, EN 12976-2:2017 as well as EN 12977-1:2018, EN 12977-2:2018, EN 12977-3:2018 and EN 12977-4:2018, this document is valid for:

  1. factory made solar heating systems,

  2. small custom built solar heating systems,

  3. large custom built solar heating systems,

  4. auxiliary heater equipment used in connection with e), f) and g).

PDF Catalog

PDF Pages PDF Title
2 undefined
9 1 Scope
10 2 Normative references
11 3 Terms and definitions
12 4 Symbols and abbreviations
5 Controller classification (including equipment classification)
5.1 Controller
13 5.2 Sensor
5.3 Actuator
14 6 Requirements
6.1 General requirements
6.1.1 Basic principles
6.1.2 Electrical safety
6.1.3 Freeze damage protection
6.1.4 Scald protection
6.1.5 High temperature protection for materials and components
15 6.1.6 Lightning
6.2 Controllers, system clocks, timers and counters
6.2.1 General
6.2.2 Accuracy requirements for controllers
6.2.3 Accuracy requirements for system clocks, timers and counters
6.3 Sensors
6.3.1 Temperature sensors
16 6.3.2 Irradiance sensors
17 6.3.3 Other sensors
18 6.4 Indicators
6.5 Actuators
6.5.1 Circulation pumps
6.5.2 Solenoid and motor valves
19 6.5.3 Relays
6.6 Initial operation and commissioning
6.7 Documentation
20 7 Testing of sensors
7.1 General
7.2 Testing of temperature sensors
7.2.1 General
7.2.2 Test equipment
21 7.2.3 Installation of sensors
7.2.4 Testing the high-temperature resistance of temperature sensors
22 7.2.5 Testing of the accuracy of temperature sensors
24 7.3 Testing of solar irradiance sensors
7.3.1 General
7.3.2 Test equipment
25 7.3.3 Installation of sensors
7.3.4 Testing sensor resistance against extreme operating conditions
27 7.3.5 Testing of the accuracy of solar irradiance sensors
28 7.4 Testing of further sensors and measuring equipment
8 Testing of system clocks, timers and counters
8.1 General
8.2 Test equipment
29 8.3 Installation of system clocks, timers and counters
8.4 Test procedure
30 8.5 Data processing and evaluation
8.5.1 General
8.5.2 System clocks and timers
8.5.3 Counters
9 Function testing of simple differential thermostats
9.1 General
9.2 Test equipment
9.2.1 General
9.2.2 Simulation box approach
31 9.2.3 Tempering device/temperature calibrators or calibration baths approach
9.2.4 Input/output emulator approach
32 9.3 Installation of differential thermostats and/or sensors
9.3.1 General
9.3.2 Differential thermostats
9.3.3 Sensors
9.4 Test procedure
9.4.1 General
9.4.2 Test procedure, simulation box approach
33 9.4.3 Test procedure using tempering devices, temperature calibrators or calibration baths
34 10 Function testing of multi-function controllers
10.1 General
10.2 Principle of multi-function controller testing
35 10.3 Intellectual property of the manufacturer
10.4 Test facility for multi-function controller testing
10.4.1 General
10.4.2 Requirements for simulation of temperature sensors
10.4.3 Requirements on recording of controller response
36 10.4.4 Test facility with input/output emulator
37 10.5 Preliminary steps when using a test facility provided with an input/output emulator
10.5.1 General
10.5.2 Adaptation of the input/output emulator and testing/measuring devices
38 10.5.3 Wiring of controller, input/output emulator and test site computer
10.5.4 Setting of controller parameters
10.5.5 Calibration of the input/output emulator
39 10.6 Test procedure
10.6.1 General
10.6.2 Test sequences
41 10.7 Data acquisition and processing
10.7.1 General
10.7.2 Data acquisition
10.7.3 Data processing
42 11 Testing of actuators and additional control equipment
11.1 General
11.2 Determination of the electric power consumption of actuators and further components
11.3 Measuring the electric power of pumps with varying power consumption
12 Documentation
12.1 General
12.2 General information
43 12.3 Marking
12.4 Information for the installer, assembly and installation
12.5 Information for the user, operation and maintenance
44 13 Test report
45 Annex A (informative)Testing the electrical supply voltage dependence of control equipment
A.1 General
A.2 Test equipment
A.3 Test procedure
46 A.4 Data processing

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BS EN 12977-5:2018
$189.07