2025 Fall TAB Journal Quiz – AABC1

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Home
About
join AABC
- AABC Member Benefits
- Certification
member Locator
publications
Professional Development
Connect with AABC
2025 AABC Annual Meeting
Member Portal

Home
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join AABC
- AABC Member Benefits
- Certification
member Locator
publications
Professional Development
Connect with AABC
2025 AABC Annual Meeting
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2025 Fall TAB Journal Quiz

Step 1 of 6

16%

Name(Required)

First Last

Email(Required)

Company Name(Required)

Are you an AABC, ACG, or EMA member? (check all that apply)(Required)

AABC

ACG

EMA

None of the above

Source Air Temperature Troubles

Brandon Yates, TBT

Thermal Balance, Inc.

1. What was the closest the air handler could get to design discharge air temperature?(Required)

40°F

43.5°F

47°F

50°F

2. What issue did the team find that caused the temperature trouble?(Required)

The new coil had not been properly sealed.

The system needed a new coil installed.

The water flow was off.

The glycol chiller was broken.

Beware of External Factors Impacting System Performance

Chuck Adams, TBE

Air Solutions, Inc.

3. What solution did the team determine to assist in the smoke capture?(Required)

Closing the loading dock door

Installing a new hood

Running the general exhaust

Installing a curtain around the hoods

Using TAB Experience to Troubleshoot Performance Issues

Jason Hauska, P.E., TBE

Engineered Air Balance Co., Inc.

4. What does the article say is likely to be the "most negative" section of the AHU?(Required)

Cooling coil

Access doors

Coil seal

Supply fan

Experience Shapes the TAB Professional

Steve Lamb, TBS

Dynamic Flow Balancing Ltd.

5. What did the team notice upon inspecting the risers?(Required)

The risers were too small.

Every CBV was open.

Every CBV was plugged.

The pump GPM was too high.

6. What allowed cold air to enter the duct and freeze the still water?(Required)

An outside air damper stuck in an open position

A broken hot water coil

An open balancing valve

A duct that was not sealed properly

Reverse Return Piping Gone Wrong

Jeremy Johnson, TBE, CxA

American Testing Inc.

7. What did the TAB team recommend the contractor do at each unit?(Required)

Reverse the piping.

Adjust the flow.

Install flow meters.

Install heat pumps.

8. Why were all units showing 0 GPM upon re-measurement?(Required)

The heat pumps were not working.

The flow meters were not working.

A pipe was leaking.

The piping was crossed.

Diagnosing System Effect: Common Causes & Where to Start

Cody S. Shook, P.E., TBE, CxA

Precision Flow Engineering, LLC

9. Which is NOT one of the most common causes of system effect?(Required)

Improper outlet connections

Non-uniform inlet flow

Swirl or spin at the fan inlet

Motorized dampers installed

10. According to the article, what is perhaps the most common incorrect duct configuration?(Required)

Outlet duct installed at the inlet

Outlet duct installed counter to the rotation of the fan

Inlet duct installed counter to the rotation of the fan

Inlet duct installed at the outlet

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