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TESTING ADJUSTING AND BALANCING (TAB) SERVICES

Testing, Adjusting, and Balancing (TAB) is a critical process in the realm of HVAC (Heating, Ventilation, and Air Conditioning) systems. TAB is the systematic and methodical evaluation of HVAC systems to ensure efficient and effective operation as designed. The primary goal of TAB is to create a balanced and harmonious environment where indoor air quality, thermal comfort, and energy efficiency are optimized.

The TAB process involves a series of tasks, including measuring and adjusting variables such as air and water flow rates, temperature differentials, and pressure levels. Technicians utilize various instruments and tools to obtain accurate data and then make adjustments to HVAC system components. The objective is to align the system's performance with the design specifications and intended functionality

Testing

Testing is the use of specialized and calibrated instruments to measure temperatures, pressures, rotational speeds, electrical characteristics, velocities, and air and water quantities for an evaluation of equipment and system performance.

Adjusting

Adjusting is the final setting of balancing devices such as dampers and valves, adjusting fan speeds and pump impeller sizes, in addition to automatic control devices such as thermostats and pressure controllers to achieve maximum specified system performance and efficiency during normal operation.

Balancing

Balancing is the methodical regulation of system fluid flows (air or water) through the use of acceptable procedures to achieve the desired or specified design airflow or water flow.

Proper TAB provides several benefits, including reduced energy consumption, enhanced occupant comfort, and prolonged equipment life. Additionally, TAB is integral to commissioning, which is the thorough evaluation and testing of HVAC systems during construction or retrofit projects.

When to have an Test and Balance ??

In both existing and new locations

• New Construction : Full system balance after start up to bring into design specification
• Remodel : Changes in floor-plans or placement of equipment's and occupants
• Re-balance : Re-balancing the existing HVAC system over the periodic years
• Equipment Changes : Installation and operation verification for new HVAC equipment
• Comfort Issue: Investigation of HVAC comfort issues and inefficiencies

Benefit of a TAB

• Balances Air Flows within Occupied space – increasing thermal comfort and ventilation effectiveness

• Hydronic balancing of chilled water flows – reduces pumping energy

• Tuning the HVAC system – Good system design also needs fine tuning to match the actual site condition.

• Obtain real energy savings after a TAB process

• Comprehensive review of design documents to ensure HVAC systems operate as intended

• Expert Observation of the Installation process in pre TAB checks.

• Produce incisive report covering the whole HVAC systems design intent and actual performance

• Troubleshoot problem areas and make adjustments on the HVAC systems to ensure prime performance

TAB is a meticulous and essential procedure that ensures HVAC systems perform optimally, delivering the desired indoor environment while minimizing energy usage and operational costs.

NEBB Certified TAB services from Blue Star include:

• HVAC system surveys
• Air and hydronic system balancing and troubleshooting