The HVAC Air Balance Report Form is a critical document designed to standardize the process of air balancing within HVAC systems for construction projects, ensuring efficient and effective use. It includes detailed procedures for the pre-balance checks, equipment, and system checks, alongside specific air balancing techniques to be followed by facilities engineering teams. For those involved in facility management or construction, getting familiar with this form and following its guidelines can be crucial in maintaining the integrity and efficiency of HVAC systems. Click the button below to start filling out the form today.
The HVAC Air Balance Report form, defined and approved by Ric Morris on November 11, 2004, under Document Number EN-MPS-711 Revision 1 for all active divisions or departments within the Raytheon Polar Services Company’s Facilities Engineering, Maintenance, and Construction (FEMC), outlines a comprehensive procedure for standardizing the balancing of air distribution systems in HVAC setups for construction projects. This vital document, which is available online and not controlled in its hard copy form as per Contract No. OPP 0000373, delineates the extent of its application, the roles and responsibilities of the FEMC, Field Engineer/Project Engineer or Designee, Certified Technicians, NSF, and Title II Inspectors. It walks through pre-balancing checks for equipment and systems to ensure cleanliness, proper installation, and functioning of various components, setting a foundational stage for effective air balancing. Further, the form guides the balancing of air handling equipment and the system as a whole, emphasizing checks on motor amperage, voltage, and the setting of minimum outdoor air quality using calculated ratios. It ensures that all processes are conducted accurately to maintain the integrity and efficiency of HVAC systems in construction projects, thereby outlining a systematic approach toward achieving optimal air distribution and maintaining warranted specifications, procedures, and codes.
B a l a n c i n g A i r D i s t r i b u t i o n S y s t e m s
Document Number EN-MPS-711
Revision 1
Approved by Ric Morris
All Stations
11/11/04
Active Divisions/Departments
FEMC
Raytheon Polar Services Company
Facilities Engineering, Maintenance, and Construction (FEMC)
Contract No. OPP 0000373
Hard Copy Not Controlled—Controlled Copy Available On-line
EN-MPS-711
Balancing Air Distribution Systems
Stations
Table of Contents
i
Purpose
1
Scope/Applicability
Responsibilities
Field Engineer/Project Engineer or Designee
Certified Technician
NSF
2
Title II Inspector
Generalized Balancing For Air Distribution Systems
Pre-balance Equipment and System Check
Equipment Check
System Check
3
Air Balancing
Air Handling Equipment Balance
System Balancing
4
References
5
Records
6
Procedure to standardize the air balancing of the HVAC systems for construction projects.
The ventilation systems must be balanced for efficient and effective use of the HVAC systems.
•
Coordinates the Final Inspection with appropriate parties.
Oversees/Participates in the Start-up, Test, and Inspection Process to ensure the Specifications and Procedures are followed.
Performs any testing, start-up, or inspection as dictated to ensure the warranty maintains its integrity; specifications, procedures, and all codes are followed, as required.
Page 1 of 6 pages
Independent Inspector for the NSF, who witnesses the testing, start-up, and conduct his required inspections for the NSF.
Before Starting, obtain up-to-date plans, drawing and or shop drawings of the complete mechanical system. Compare installed equipment to design and check for completeness of installation. Obtain the manufactures’ outlet factors and recommended procedure for testing air outlets
Pre - balance Equipment and System Check
1.Check fan housings, coils, louvers, etc., to ensure they are clean and free of foreign material.
2.Check filters to ensure that they are clean and in place.
3.Check adjustment of vibration eliminators.
4.Examine drives for proper belt tension and alignment.
5.Check fan and motor lubrication.
6.Check fan overload proctors or heaters for proper size – check motor amperage to guard against overload.
7.Check automatic dampers for proper operation and position.
8.Check fan for proper rotation.
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1.Check for installation of all required balance dampers.
2.Turn off the air handler unit (AHU).
3.Set all system dampers in their open position. This includes all volume dampers, fire dampers, outlet dampers, etc.
4.Turn on the AHU. (Caution: Check fan amperages, in some cases the AHU motor may be overloaded when the system is turned on when all system dampers are opened).
5.Check for air leaks at the fan and the system ductwork.
6.Position all doors and windows to their normal position.
7.Check air temperature to ensure required air temperature delivery.
1.Check motor amperage and voltage to ensure motor is not being overloaded. (See form Vibration Test Data Air Handling Unit (AHU 1) (EN-MPS-711y) and Vibration Test Data Air Handling Unit (AHU 2) (EN-MPS-711z).)
2.Set minimum outdoor air quality using the temperature ratio method.
Tm = (% O.A.)(To) + (% R.A.)(Tr)
%O.A. = 100 (Tm-Tr) / (To-Tr)
%R.A. = 100 (To-Tm) / (To-Tr)
Xo = Percent outdoor air
Xr = Percent return air
To = Outside air temperature
Tr = Return air temperature
Tm = Mixed air temperature
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3.Determine the volume of the air being delivered by the fan. Adjust the fan speed to increase or decrease the flow if required. If the speed is increased, ensure the motor is not overloaded. Check total flow with the dampers set to their minimum outside air and again for 100 percent outside air; variation should be within 10 percent.
4.Check fan motor speed, operating amperage and voltage. Calculate break horsepower.
5.Take fan static pressure readings and static pressure across the fan system components; i.e., filters, coils, etc.
1.Using the duct velocity traverse method, adjust the volume dampers to deliver the design airflow in each main, zone, and branch duct. (See the following forms: Air Cooled Condensing Unit (EN-MPS-711a), Air Distribution Test Sheet (EN-MPS-711b), Air Monitoring Station Data (EN-MPS-711d), Air Moving Equipment Test Sheet (EN-MPS-711e), Circular Duct Traverse Reading (EN-MPS-711f), Duct Leak Test (EN- MPS-718a), Duct Traverse Readings (EN-MPS-711i), Duct Traverse Readings Zone Totals Report (EN-MPS-711j), Electric Coil/Duct Heater Test Report (EN-MPS-711k), Exhaust Fan Data Sheet (EN-MPS-711l), Fan & Motor Pulley (EN-MPS-711m), Induction Units (EN-MPS-711o), Oval Duct Traverse Readings (EN-MPS-711r), Return Air/Outside Data (EN-MPS-711s), Sound Level Report (EN-MPS-711u), Terminal Units (EN-MPS-711w), Vibration Test Data Air Handling Unit (AHU 1) (EN- MPS-711y), Vibration Test Data Air Handling Unit (AHU 2) (EN-MPS- 711z), Vibration Test Data Centrifugal Fan (EN-MPS-711aa), Vibration Test Data Utility Fan (EN-MPS-711bb), Vibration Test Vaneaxial Fan (EN-MPS-711cc).)
2.Adjust the individual supply outlets both for air volume and distribution pattern. Follow the manufactures’ recommended procedure, using the proper factor. Use the proportional (ratio) method or other appropriate systematic procedure for outlet balancing. Compare the outlet total flow to the duct traverse previously made; variation should be within 10 percent.
3.Using the same basic procedures for the supply side, balance the return and exhaust systems.
4.Recheck speed, amperage and pressure readings at the fan.
5.Submit Reports. (Air Handler Test and Balance Report (EN-MPS-711a and Test and Balance Report (EN-MPS-712k).)
Page 4 of 6 pages
Air Cooled Condensing Unit (EN-MPS-711a)
Air Distribution Test Sheet (EN-MPS-711b)
Air Handler Test & Balance Report (EN-MPS-711c)
Air Monitoring Station Data (EN-MPS-711d)
Air Moving Equipment Test Sheet (EN-MPS-711e)
Circular Duct Traverse Reading (EN-MPS-711f)
Diffuser and Grill Test Report (EN-MPS-711g)
Duct Leak Test (EN-MPS-718a)
Duct Traverse Readings (EN-MPS-711i)
Duct Traverse Readings Zone Totals Report (EN-MPS-711j)
Electric Coil/Duct Heater Test Report (EN-MPS-711k)
Exhaust Fan Data Sheet (EN-MPS-711l)
Fan & Motor Pulley (EN-MPS-711m)
HVAC Fan Equipment Test Report (EN-MPS-711n)
Induction Units (EN-MPS-711o)
Instrument Calibration Report (EN-MPS-711p)
Oval Duct Traverse Readings (EN-MPS-711r)
Return Air/Outside Data (EN-MPS-711s)
Round Duct Traverse Reading (EN-MPS-711t)
Sound Level Report (EN-MPS-711u)
Square Duct Traverse Reading Report (EN-MPS-711v)
Terminal Units (EN-MPS-711w)
Terminal Unit Test Report (EN-MPS-711x)
Test and Balance Report (EN-MPS-712k)
Vibration Test Data Air Handling Unit (AHU 1) (EN-MPS-711y)
Page 5 of 6 pages
Vibration Test Data Air Handling Unit (AHU 2) (EN-MPS-711z)
Vibration Test Data Centrifugal Fan (EN-MPS-711aa)
Vibration Test Data Utility Fan (EN-MPS-711bb)
Vibration Test Vaneaxial Fan (EN-MPS-711cc)
See the McMurdo, Palmer, and South Pole Stations tab section in FEMC Records Management Table (EN-D-226a) on the Master List.
Page 6 of 6 pages
Filling out the HVAC Air Balance Report form is a critical step in ensuring the efficiency and effectiveness of HVAC systems for construction projects. This process involves a meticulous review of air distribution systems to identify and correct any imbalances. The steps outlined below provide guidance on how to accurately complete this important document.
After completing these steps, the HVAC Air Balance Report form will be thoroughly filled out, contributing to the successful balance of the air distribution system. This ensures the optimal performance of the HVAC system, aligning with the specified guidelines and requirements for efficient operation within construction projects.
What is the purpose of the HVAC Air Balance Report?
The HVAC Air Balance Report standardizes the procedure for balancing the air distribution of HVAC systems in construction projects. It ensures that the ventilation systems are balanced for efficient and effective use.
Who is responsible for the HVAC Air Balance?
Several parties share responsibility for the HVAC Air Balance. The Facilities Engineering, Maintenance, and Construction (FEMC) team, Field Engineer/Project Engineer or their designee, a certified technician, and the National Science Foundation (NSF) Title II Inspector all play vital roles in this process. Each has specific tasks, from coordination and oversight to performing necessary tests and inspections.
What steps are involved in preparing for air balancing?
Before starting air balancing, one must obtain up-to-date plans or shop drawings of the complete mechanical system, compare installed equipment to the design, check for completeness of installation, and obtain manufactures’ outlet factors and recommended procedures for testing air outlets.
What checks are performed during the pre-balance equipment and system check phase?
Several checks are needed to prepare for air balancing. These include ensuring fan housings, coils, louvers, etc., are clean, filters are clean and in place, vibration eliminators are properly adjusted, drives have proper belt tension and alignment, fan and motor are properly lubricated, fan overload protectors are correctly sized, automatic dampers are functioning correctly, and fan rotation is proper.
What does the system check involve?
During the system check, the process involves installing all required balance dampers, turning off the air handler unit (AHU), setting all system dampers in their open position, turning on the AHU with caution to check fan amperages, checking for air leaks at the fan and system ductwork, positioning all doors and windows normally, and ensuring the air temperature meets required delivery specifications.
How is air handling equipment balanced?
To balance air handling equipment, the procedure involves checking motor amperage and voltage to ensure the motor is not overloaded and setting the minimum outdoor air quality using the temperature ratio method, which involves calculations with the percentage of outside air (% O.A.), return air (% R.A.), outside air temperature (To), return air temperature (Tr), and mixed air temperature (Tm).
Where can one access the controlled copy of the HVAC Air Balance Report form?
The controlled copy of the HVAC Air Balance Report form is available online, as the hard copy is not controlled. It indicates the importance of referring to the most current version of the document for accurate and up-to-date procedures and specifications.
When filling out the HVAC Air Balance Report form, several mistakes are commonly made, which can lead to inaccurate assessments of air distribution systems. Understanding and avoiding these errors are crucial for ensuring that HVAC systems are balanced correctly for efficiency and comfort.
One common error is neglecting to obtain the most up-to-date plans, drawings, or shop drawings of the complete mechanical system. This oversight can lead to a misunderstanding of the system’s layout and the specific requirements for balancing. Without this information, the balance may be based on incorrect or outdated information, compromising the accuracy of the report.
Failing to compare installed equipment against design specifications is another frequent mistake. This step is vital for ensuring that the system installed matches the intended design and that all components are present and correctly installed. Missing this step might lead to incorrect assumptions about system capabilities and performance during the balancing process.
Many overlook the importance of checking for the installation of all required balance dampers. These dampers are crucial for proper air distribution and balance within the system. Without verifying their presence and correct installation, achieving an accurate balance is practically impossible.
Turning on the air handler unit (AHU) without first setting all system dampers in their open position is a mistake that can lead to motor overload and inaccurate initial system checks. Opening all dampers prevents the motor from being overloaded by ensuring that air can flow freely through the system during the initial startup.
Not checking motor amperage and voltage to ensure the motor is not being overloaded during the Air Handling Equipment Balance is a critical oversight. This check is essential for preventing equipment damage and for verifying that the system operates within safe parameters.
The procedure for setting minimum outdoor air quality using the temperature ratio method is often misunderstood or incorrectly applied. This calculation is vital for ensuring that the system meets air quality standards while operating efficiently. Incorrect calculations here can lead to poor air quality or inefficient system operation.
Errors in recording or interpreting the data from tests, such as fan housings checks or vibration tests, can lead to inaccurate conclusions about the system’s condition or balance. This undermines the purpose of the HVAC Air Balance Report, potentially leading to recommendations that do not address the system’s actual needs.
Another frequent mistake is not checking for air leaks at the fan and system ductwork. Air leaks can significantly impact system balance and efficiency. Overlooking this check can result in a system being inaccurately assessed as balanced when it is, in fact, losing air through leaks.
Last but not least, assuming that the process does not require thorough attention to detail can lead to oversights and errors. The HVAC Air Balance Report is a critical document that requires careful attention to every detail, from preliminary checks to final assessments, to ensure the HVAC system operates efficiently and effectively.
When working with HVAC systems, particularly in the construction or maintenance phase, the HVAC Air Balance Report form proves indispensable. However, this document seldom stands alone in ensuring a well-qualified and effective HVAC installation or maintenance process. Several other forms and documents frequently complement the HVAC Air Balance Report form, aiding in a more comprehensive and compliant approach to HVAC system balancing, inspection, and maintenance.
Collectively, these documents create a comprehensive and detail-oriented approach to HVAC system installation and maintenance. Each plays a vital role in ensuring that the system not only functions as intended but also adheres to the regulatory standards and client expectations. From initial installation to final handover, these documents support a clear, systematic process for HVAC projects. Thus, ensuring access to and proper use of these forms and documents is crucial for any professional engaged in HVAC system construction, installation, or maintenance.
The HVAC Air Balance Report form shares similarities with the Commissioning Report for HVAC systems. Both documents are crucial in ensuring that HVAC systems are installed and functioning correctly according to the project's specifications and standards. While the Air Balance Report focuses on the balance of air distribution to achieve optimal performance and efficiency, the Commissioning Report verifies that every component of the HVAC system has been installed correctly and performs according to the design intentions, ensuring the system meets the owner’s operational needs. Both reports are essential for the maintenance of quality, efficiency, and comfort in building operations.
Energy Audit Reports also share common ground with the HVAC Air Balance Report. Both documents aim to enhance the efficiency of building systems - the Air Balance Report through optimizing air distribution and the Energy Audit Report by identifying ways to reduce energy consumption and inefficiencies across the building. Energy audits evaluate HVAC systems, lighting, insulation, and other elements that contribute to a building’s energy footprint, recommending improvements to enhance overall efficiency. Each plays a pivotal role in sustainable building management by ensuring systems are running at peak efficiency.
Maintenance Checklists for HVAC systems are similarly related to the HVAC Air Balance Report. Both are instrumental in routine upkeep to ensure the HVAC system's longevity and efficiency. The Air Balance Report focuses on the distribution and flow of air within the system, while Maintenance Checklists encompass a broader range of checks and services, including cleaning filters, checking fluid levels, and inspecting components for wear and tear. Together, they ensure the HVAC system operates smoothly, preventing unexpected failures and prolonging the system’s life.
Another document akin to the HVAC Air Balance Report is the Indoor Air Quality (IAQ) Assessment. While the Air Balance Report focuses on balancing the air distribution for efficiency and comfort, the IAQ Assessment examines the air quality within the building, including pollutants and ventilation effectiveness. Both are critical for maintaining a healthy and comfortable indoor environment, highlighting areas of improvement to ensure the well-being of occupants by providing sufficient air flow and reducing contaminants.
The Building Automation System (BAS) Report shares similarities with the HVAC Air Balance Report by focusing on the efficiency and proper functioning of building systems. While the Air Balance Report ensures that the HVAC system distributes air evenly and efficiently, the BAS Report monitors and reports on the performance of all automated systems within a building, including HVAC, lighting, and security, to optimize operation and energy use. Both documents are integral in maintaining an efficient, safe, and comfortable building environment.
Permit Applications for HVAC Installations also relate closely to the HVAC Air Balance Report in the context of regulatory compliance and operational standards. The permit application ensures that the HVAC system design meets local building codes and standards before installation. In contrast, the Air Balance Report verifies that the installed system achieves the designed performance levels, including proper air balance. Both documents are necessary steps in the process of HVAC installation, ensuring compliance with laws and optimal system performance.
Project Completion Certificates for HVAC installations relate to the HVAC Air Balance Report by marking significant milestones in a project's lifecycle. The Air Balance Report is a component of the final documentation, providing evidence that the air distribution system has been balanced correctly. In contrast, the Project Completion Certificate signifies that the entire project, including the HVAC installation, has been completed according to the contract specifications, guidelines, and regulations. Both are essential for the formal closure of projects and the initiation of warranty periods.
Finally, the Mechanical Systems Operation Manual bears resemblance to the HVAC Air Balance Report by serving as a comprehensive guide for the ongoing operation and maintenance of the HVAC system. While the Air Balance Report provides detailed outcomes and specifications related to the air distribution balance, the operation manual offers instructions, schedules, and best practices for the system’s entire lifecycle. Together, these documents support the efficient, effective, and informed management of HVAC systems, ensuring optimal performance and longevity.
When filling out the HVAC Air Balance Report form, accuracy and thoroughness are key. Here are some essential do's and don'ts to keep in mind:
Do:
Don't:
Focusing on these do's and don'ts will help ensure that the HVAC Air Balance Report form is filled out comprehensively and accurately, leading to a well-balanced and efficiently operating HVAC system.
When discussing HVAC air balance reports, especially in the context of the example document titled, "Balancing Air Distribution Systems," several misconceptions often arise. Understanding these common errors can help stakeholders from various fields grasp the critical aspects of HVAC efficiency and compliance within construction projects.
One might think that the essence of air balancing is simply adjusting the air vents within a building. However, the reality is much more complex. Air balancing involves a comprehensive evaluation and adjustment process that ensures each component of the HVAC system operates optimally. From checking fan housings and filters to ensuring motors are not overloaded—as outlined in the pre-balance equipment and system check—each step is crucial for achieving an efficient air distribution system.
Another common misunderstanding is the belief that air balancing can be executed by anyone without specific qualifications. The document clearly designates roles such as a "Certified Technician" to conduct tests and inspections, indicating the need for specialized skills and knowledge. This ensures that the HVAC system not only follows specifications and procedures but also complies with all relevant codes.
It might be assumed that once an air balance report has been completed, no further action is required. However, air balancing is an integral part of maintaining an HVAC system over its lifecycle. Changes in building usage, renovations, or updates to HVAC equipment may necessitate new air balance procedures to ensure optimal performance and energy efficiency.
A prevalent misconception is that air balancing has minimal impact on energy consumption. In reality, proper air balancing is vital for reducing energy waste. By ensuring that air distribution is efficiently managed, HVAC systems do not overwork, thus saving on energy costs. The procedures outlined for checking and adjusting air handling equipment emphasize the importance of balancing for energy conservation.
Understanding these misconceptions about HVAC air balance reports can lead to better practices in constructing and maintaining efficient and effective air distribution systems. Recognizing the detailed process, the need for specialized skills, the ongoing nature of air balancing, and its impact on energy usage can significantly contribute to improving HVAC operations in buildings.
When completing and using the HVAC Air Balance Report form, it is crucial to adhere to a clear and methodical process to ensure that ventilation systems work efficiently and effectively. This document serves as a guide for standardizing the air balancing of HVAC systems within construction projects. Here are key takeaways you should consider:
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