Equipment Requirements & Design — Texas ACR A Practice Questions

29 questions · 12% of the Texas ACR A exam

Worked questions

1. For this furnace efficiency exercise, annual useful heat output is 81 million Btu and annual fuel input is 90 million Btu. Using output divided by input, what is the annual efficiency?

A9%
90%
C81%
D111%

Where to look it up

Explicit exercise assumptions; not a universal code requirement.

Why B is correct

81 / 90 × 100 = 90%. This compares annual energy quantities; it does not assert a minimum AFUE for every public building.

2. Under 2022 FDA Food Code 3-501.16(A)(2), what is the maximum cold-holding temperature for time/temperature control for safety food when none of that section's exceptions applies?

A32°F
B35°F
41°F
D45°F

Where to look it up

https://www.fda.gov/media/164194/download

Why C is correct

The specified cold-holding limit is 41°F or less for the food. It is a maximum, not a required minimum refrigerator setting. The rule has exceptions, including specified raw-shell-egg storage; those are excluded by the question. Equipment air temperature must be managed to keep the food compliant.

3. An approved rated-wall detail requires a specific protected penetration assembly for an HVAC opening. The proposed PTAC installation omits that protection. What is the appropriate response?

AAssume every PTAC is exempt from wall protection.
Resolve the deviation against the approved assembly before installation.
CReplace the detail with ordinary expanding foam without approval.
DIgnore the wall rating because the unit is small.

Where to look it up

Explicit exercise assumptions; not a universal code requirement.

Why B is correct

The project explicitly requires the protected assembly. Equipment type alone does not waive that condition. Obtain a compliant detail rather than claiming a blanket fire-damper exemption.

26 more in the bank

Answers and explanations for these are in the app.

A commercial building has a ventilation system that requires a total of 10,000 cfm of air. The system includes a main trunk duct with a diameter of 24 inches. What is the minimum slope required for the main trunk duct to prevent airlock?
A commercial building in Texas is being retrofitted with a new air conditioning system. According to the 2024 IFGC, what is the minimum refrigerant charge for a water-cooled condenser in a commercial building?
A commercial office building requires humidification in its ventilation system. The code specifies that the humidity level should be maintained between 30% and 60%. What is the typical method used to achieve this humidity level?
A hospital room has a ventilation system that requires a total of 100 cfm of air. The system includes a diffuser with a face velocity of 500 feet per minute (fpm). What is the minimum size of the diffuser required?
A new industrial facility is being designed with a ventilation system. According to the 2024 IMC, what is the minimum exhaust air velocity required in a process ventilation system?
A new walk-in refrigerator is being installed in a food service establishment in Texas. According to the 2024 UMC, what is the maximum allowable temperature for the interior of the refrigerator?
A public building in Texas is being renovated and requires the installation of new air distribution systems. According to the 2024 IFGC, what is the maximum allowable distance between supply and return registers?
A residential building in Texas is being designed with a mechanical ventilation system. According to the 2024 IMC, what is the minimum outdoor air ventilation rate required for each bedroom?
A residential building in Texas is equipped with a mechanical ventilation system. According to the 2024 IMC, what is the minimum outdoor air supply required per person?
A residential kitchen is equipped with a range hood that exhausts air to the outside. What is the minimum outdoor air supply required per 100 square feet of kitchen area, according to the 2024 IMC?
A residential kitchen requires a range hood exhaust system. The code specifies that the minimum exhaust rate should be 100 cubic feet per minute (cfm) for a standard range. What is the correct method to determine the additional exhaust rate required if the kitchen has a ceiling height of 10 feet and the range hood is located 6 feet from the ceiling?
A retail store has a display area with a ceiling height of 12 feet. The code requires that the exhaust fan in this area has a minimum airflow of 100 cfm. What is the minimum size of the exhaust fan required?
A retail store is being designed with an air conditioning system. According to ACCA Manual D, what is the recommended method for sizing a cooling system for a retail space?
A school classroom has a volume of 1,000 cubic feet. The code specifies that the minimum ventilation rate should be 15 cubic feet per minute (cfm) per person. If the classroom has 30 students, what is the total minimum ventilation requirement?
According to the Texas Administrative Code Chapter 75, what is the maximum amount of refrigerant that can be stored on-site by a maintenance contractor?
An industrial facility in Texas is planning to install a new ventilation system to control air quality. According to the 2024 IMC, what is the minimum exhaust air requirement for a process that generates harmful emissions?
An industrial facility needs to replace the air filters in its ventilation system. The existing filters have a MERV (Minimum Efficiency Reporting Value) rating of 8. What MERV rating should the new filters have to meet the requirements of ANSI/ASHRAE Standard 52.2?
In a commercial establishment in Texas, the 2024 IFGC requires that refrigeration units be equipped with what type of control to prevent refrigerant leaks?
In a healthcare facility, the 2024 IFGC requires that what type of air filter be used in the ventilation system to control airborne contaminants?
In a healthcare facility, what is the recommended frequency of air filter replacement for a HEPA filter, according to the 2024 UMC?
In an industrial facility, the 2024 IMC requires that all exhaust systems be equipped with what to prevent the accumulation of flammable vapors?
In an office building, what is the recommended supply air temperature for a VAV system, according to Modern Refrigeration and Air Conditioning 22nd ed.?
What is the maximum distance between air conditioning units that serve a single zone, according to the 2024 UMC?
What is the maximum refrigerant charge that can be used in a walk-in cooler according to the Texas Occupations Code Chapter 1302?
What is the minimum clearance required between the bottom of a ventilation duct and the floor in a school building, according to the 2024 IMC?
What is the minimum water quality requirement for cooling towers in Texas, as specified in the 2024 UMC?

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Equipment Requirements & Design — Texas ACR A Practice Questions

Worked questions

1. For this furnace efficiency exercise, annual useful heat output is 81 million Btu and annual fuel input is 90 million Btu. Using output divided by input, what is the annual efficiency?

2. Under 2022 FDA Food Code 3-501.16(A)(2), what is the maximum cold-holding temperature for time/temperature control for safety food when none of that section's exceptions applies?

3. An approved rated-wall detail requires a specific protected penetration assembly for an HVAC opening. The proposed PTAC installation omits that protection. What is the appropriate response?

26 more in the bank

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