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eLibrary >
ASHRAE Guideline 1.5-2025 -- Application of the Commissioning Process for Smoke Control Systems >
ASHRAE Guideline 1.5-2025 -- Application of the Commissioning Process for Smoke Control Systems, 2025
- ASHRAE Online Bookstore
- Addenda
- Errata
- Return to Previous Page
- ASHRAE Guideline 1.5-2025 [Go to Page]
- Contents
- Foreword
- 1. Purpose [Go to Page]
- 1.1 The purpose of this guideline is to describe the technical requirements for the application of the Commissioning Process (Cx), described in ASHRAE Guideline 0 1 and Standard 202 2, that will verify that the smoke control system fulfills the Owner...
- 2. Scope [Go to Page]
- 2.1 The procedures, methods, and documentation requirements in this guideline describe the application of the Commissioning Process (Cx) for each project delivery phase, from Predesign through Occupancy/ Operations, for all types and sizes of smoke c...
- 2.2 The procedures, methods, and documentation requirements apply to new construction and Ongoing Cx Activities or requirements of all or portions of buildings and facilities. They also can be applied to rehab, retrocommissioning, or recommissioning ...
- 3. Utilization [Go to Page]
- 3.1 The application of this guideline depends on the Owner’s Project Requirements (OPR), which specify how the project is designed, built, and operated, and the requirements of the authority having jurisdiction (AHJ). This guideline is supplemental...
- 3.2 This guideline describes specific details required to properly implement the Cx as it relates to smoke control systems, including documentation, test procedures, and checklists.
- 4. Nomenclature [Go to Page]
- 4.1 Definitions. Definitions for general Commissioning Process (Cx) terms are found in ASHRAE Guideline 0 1 and Standard 202 2. Additional smoke-control-related terms are defined as follows.
- 4.2 Abbreviations
- 5. Predesign Phase [Go to Page]
- 5.1 Introduction
- 5.2 Predesign Phase Cx Activities
- 5.3 Predesign Phase Acceptance Requirements. During the Predesign Phase, the Cx should include the formal acceptance by the Owner of the OPR and the Cx Plan. Additional information is provided in ASHRAE Guideline 0 1, Informative Appendix H.
- 5.4 Predesign Phase Documentation. See ASHRAE Guideline 0 1, Section 5.4, for documentation listings. Additional information is provided in SSPC 300 Informative Annex 01, “Commissioning Process Documentation Matrix.”
- 5.5 Predesign Phase Training Identification Requirements. See ASHRAE Guideline 0 1, Section 5.5, for training identification procedures. Additional information is provided in ASHRAE Guideline 1.3 3, Building Operation and Maintenance Training for the...
- 6. Design Phase [Go to Page]
- 6.1 Introduction
- 6.2 Design Phase Cx Activities
- 6.3 Design Phase Acceptance Requirements. Cx should include the formal acceptance of the BoD and the updated OPR.
- 6.4 Design Phase Documentation Requirements
- 6.5 Design Phase Training Identification Requirements
- 7. Construction Phase [Go to Page]
- 7.1 Introduction. Commissioning Process (Cx) Activities to be performed by the various members of the CxP Team during the Construction Phase are described in ASHRAE Guideline 0 1, Section 7. Additional information on specific activities related to sm...
- 7.2 Construction Phase Cx Activities
- 7.3 Construction Phase Acceptance Requirements. See ASHRAE Guideline 0 1, Section 7.3, for requirements.
- 7.4 Construction Phase Documentation Requirements. See ASHRAE Guideline 0 1, Section 7.4, for requirements.
- 7.5 Construction Phase Training Requirements. See ASHRAE Guideline 1.3 3 and Section 7.2.13 for requirements.
- 8. Occupancy/Operations Phase [Go to Page]
- 8.1 Introduction. Commissioning Process (Cx) Activities described in this section to be performed by the various members of the CxP Team during the Occupancy/Operations Phase are described in ASHRAE Guideline 0 1, Section 8. Troubleshooting and resol...
- 8.2 Occupancy/Operations Phase Cx Activities
- 8.3 Occupancy/Operations Phase Acceptance Requirements. The Occupancy/Operations Phase acceptance requirements are detailed in ASHRAE Guideline 0 1, Section 8.3.
- 8.4 Occupancy/Operations Phase Documentation Requirements. The Occupancy/Operations Phase documentation requirements are detailed in ASHRAE Guideline 0 1, Section 8.4.
- 8.5 Occupancy/Operations Phase Training Requirements. Cx training requirements for the Occupancy/ Operations Phase are detailed in ASHRAE Guideline 0 1, Section 8.5.
- 9. Postacceptance Phase [Go to Page]
- 9.1 Introduction. The postacceptance Commissioning Process (Cx) ensures effective, ongoing functioning of a facility’s smoke control system. As the use and functions of facilities change, smoke control systems need to be adapted to changes in build...
- 9.2 Postacceptance Cx Procedure—Documentation
- 9.3 Facility Alterations
- 9.4 Maintenance Program
- 10. References
- Informative Appendix A: Acceptance Plan
- Informative Appendix B: Specifications [Go to Page]
- B1. Procedures for Space Pressurization Measurements and Adjustments [Go to Page]
- B1.1 Before testing for space pressurization, observe the space to verify the integrity of the space boundaries. Verify that windows and doors are closed and applicable firestopping, gaskets, and sealants are installed. Report deficiencies, and postp...
- B1.2 Measure, adjust, and record the pressurization of each room, each zone, and each building by adjusting the supply, return, and exhaust airflows to achieve the indicated conditions.
- B1.3 Measure space pressure differential where pressure is used as the design criteria, and measure airflow differential where differential airflow is used as the design criteria for space pressurization.
- B1.4 Measure and record the pressure difference between the intended spaces at the door with all doors in the space closed. Record the high-pressure side, low-pressure side, and pressure difference between each adjacent space.
- B1.5 For applications with cascading levels of space pressurization, begin in the most critical space and work to the least critical space.
- B1.6 Test room pressurization first, then zones, and finish with building pressurization.
- B1.7 To achieve indicated pressurization, set the supply airflow to the indicated conditions and adjust the exhaust and return airflows to achieve the indicated pressure or airflow difference.
- B1.8 For spaces with pressurization being monitored and controlled automatically, observe and adjust the controls to achieve the desired set point.
- B1.9 Compare the values of the measurements taken to the measured values of the control system instruments and report findings.
- B1.10 Check the repeatability of the controls by successive tests designed to temporarily alter the ability to achieve space pressurization. Test overpressurization and underpressurization, and observe and report on the system’s ability to revert t...
- B1.11 For spaces served by variable-air-volume supply and exhaust systems, measure space pressurization at indicated airflow and minimum airflow conditions.
- B1.12 In spaces that employ multiple modes of operation, such as normal mode and emergency mode or occupied mode and unoccupied mode, measure, adjust, and record data for each operating mode.
- B1.13 Record indicated conditions and corresponding initial and final measurements. Report deficiencies.
- B2. Procedures for Stair Tower Pressurization System Measurements and Adjustments [Go to Page]
- B2.1 Before testing, observe the stair tower to verify that construction is complete. Verify the following:
- B2.2 Measure and record wind speed and direction, outdoor air temperature, and relative humidity on each test day.
- B2.3 Test each stair tower as a single system. If multiple fans serve a single stair tower, operate the fans together.
- B2.4 Balance the airflows in the stair tower as follows:
- B2.5 After air balancing is complete, perform stair tower pressurization tests.
- B2.6 Perform operational tests as described below.
- B2.7 Prepare a complete report of observations, measurements, and deficiencies.
- B3. Procedures for Smoke Control System Testing [Go to Page]
- B3.1 Before testing smoke control systems, verify that construction is complete, and verify the integrity of each smoke control zone boundary. Verify that windows and doors are closed and that applicable safing, gaskets, and sealants are installed. R...
- B3.2 Measure and record wind speed and direction, outdoor air temperature, and relative humidity on each test day.
- B3.3 Measure, adjust, and record the airflow of each smoke control system with all fans that are a part of the system operating as intended by the design.
- B3.4 Measure, adjust, and record the airflow of each fan. For ducted systems, measure the fan airflow by duct pitot-tube traverse.
- B3.5 After air balancing is complete, perform the following pressurization testing for each smoke control zone in the system:
- B3.6 Perform operational tests as described below.
- B3.7 Conduct additional tests required by AHJs. Unless required by AHJs, perform testing without the use of smoke or products that simulate smoke.
- B3.8 Prepare a complete report of observations, measurements, and deficiencies.
- Informative Appendix C: Example Checklists
- Informative Appendix D: Crosswalk [Go to Page]
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