HVAC System Testing, Adjusting and Balancing Procedures

This article is about HVAC System Testing, Adjusting and Balancing Procedures as per International Codes and standards.

HVAC System Testing, Adjusting and Balancing Procedures

1. All building environmental systems shall be checked and adjusted to produce the design objectives. This shall include:
   a) the balance of air and water distribution.
   b) adjustment of total system to provide design quantities.
   c) electrical measurement.
   d) verification of performance of all equipment and automatic controls.
   e) sound and vibration measurement, when required.”
2. The Test and Balance Organization shall perform testing, adjustment and balancing of all equipment and systems, and publish a Testing and Balancing report using the general procedures identified in Item No. A3, A4 , A5, A6 or A7 plus any other requirements stated in this SAIC.
3. ASHRAE STD 111 (latest edition), Practices for Measurement, Testing, Adjusting and Balancing of Heating, Ventilation, Air Conditioning and Refrigeration Systems.
4. ASHRAE Applications Handbook (latest edition), Chapter on “Testing, Adjusting and Balancing”;
5. SMACNA (latest edition), “HVAC Systems – Testing, Adjusting and Balancing
6. Construction Specification Institute, Section 15990.
7. NEBB “Testing, Adjusting and Balancing of Environmental Systems.” (latest edition)
8. TAB instruments shall be the type described in NEBB or AABC manual and shall be calibrated every six month
   Note: Calibration certificates shall be submitted as part the review package”
   Balance air distribution system shall be within +/- 10% of air quantities shown on project drawings and record actual readings taken.
9. Provide construction drawings, reduced to 280 x 430 mm of every duct, air outlet, air return measured.
10. Identify each measurement point on this construction drawing and on record data sheets.
11. Adjust all chilled water balance valves for quantities to within +/-5% of values shown on project drawings and record actual readings.
12. Provide test points and plugs or covers for all openings in duct.

Standards Codes and References For HVAC System Testing, Adjusting and Balancing

1. ASHRAE STD 111 – Practices for Measurement, Testing, Adjusting and Balancing of Heating, Ventilation, Air Conditioning and Refrigeration Systems, latest edition.
2. ASHRAE Applications Handbook — Chapter on “Testing, Adjusting and Balancing”, latest edition.
3. SMACNA — “HVAC Systems – Testing, Adjusting and Balancing”, latest edition.
4. NEBB – “Testing, Adjusting and Balancing of Environmental Systems”, latest edition.
5. SAES-K-001 – Heating, Ventilating and Air Conditioning (HVAC).
6. SAES-K-100 – Saudi Aramco Mechanical (HVAC) Code.
7. Uniform Mechanical Code (UMC).
8. Uniform Fire Code (UFC), 1997.
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