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eLibrary > ASHRAE Standard 207-2021 -- Laboratory Method of Test of Fault Detection and Diagnosis for Air Economizers (ANSI Approved) >

ASHRAE Standard 207-2021 -- Laboratory Method of Test of Fault Detection and Diagnosis for Air Economizers (ANSI Approved), 2021

ANSI/ASHRAE Standard 207-2021 [Go to Page]
CONTENTS
FOREWORD
1. PURPOSE
2. SCOPE
3. DEFINITIONS
4. METHODS OF TEST [Go to Page]
4.1 Approach. The general approach is as follows:
4.2 Required Tests. Laboratory tests shall be performed to simulate a fault. The FDD system response to that fault will be documented accordingly. The results of the tests shall be provided on a test report that conforms to the requirements in Sectio...
4.3 Apparatus and Measurement Accuracy. Tests shall be conducted in a laboratory with instrumentation that conforms to the tolerances stated in ASHRAE Standards 41.1 1 and 41.6 2. All temperature measurements shall have a minimum accuracy of ±2°F (...
5. APPLICATION OF TESTING [Go to Page]
5.1 Specification of FDD System Performance. The specifier shall provide in a performance specification the information listed below to indicate what faults shall be detected and the parameters of the testing:
5.2 Development of a Test Plan. A test plan document shall be developed to describe how FDD system testing is to be conducted. It is based on the items listed in the performance specification and embodies the detailed test procedures provided in Sect...
5.3 Documentation of Results of Performance Testing. The tester shall document each test performed by recording in a test report all of the following information:
6. DETAILED TEST PROCEDURES [Go to Page]
6.1 Baseline Setting Procedures. Before testing, verify that the alarms to be tested are included in the current firmware version of the FDD system you are testing. Ensure that the controller and the unit are properly commissioned and installed per t...
6.2 No-Sensor-Communication Test Procedures. All sensors in an economizer system must be able to communicate with the controller. The tests in this section identify whether or not an FDD system accurately detects situations where there is no sensor c...
6.3 No-Actuator-Communication Test Procedures. All actuators in an economizer system must be able to communicate with the controller. The tests in this section identify whether or not an FDD system accurately detects situations where there is no actu...
6.4 Unresponsive Damper/Actuator Test Procedures. All relevant dampers and actuators in an economizer system must be able to respond to signals from the controller. The tests in this section identify whether or not an FDD system accurately detects si...
6.5 Inappropriate Damper Position Test Procedures. This category of tests is applicable only for FDD systems that annunciate specific faults rather than simply detect the presence of a general fault.
7. REFERENCES [Go to Page]

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