2024 Gas Furnace Training Day 1 Quiz

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Question 1 of 25

1. Question

What does FER stand for

Furnace Efficiency Rating
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Furnace Efficiency Ratio
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Fan Efficiency Rating
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Fan Energy Rating
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Question 2 of 25

2. Question

Why did the reason FER was implemented?

To get rid of PSC blowers
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To save energy
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To sell more ECM motors
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To get better airflow
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Question 3 of 25

3. Question

Of the 4 motors currently available which one does the least de-humidification?

VCA
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VCT
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FCT
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MCT
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Question 4 of 25

4. Question

The VCA motor is?

Fully communicating
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Constant airflow, even as ESP increases
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80% or 85% electrical efficiency
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All of the above
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None of the above
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Question 5 of 25

5. Question

What happens to the airflow at 1″ of static on a furnace with a VCT motor?

It stays the same
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It reduces airflow by 10 ton 15%
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It reduces airflow by 15 to 20%
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It locks out
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Question 6 of 25

6. Question

The MCT motor is?

The new base-tier motor
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Works as good as the PSC motor
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The new high efficiency motor
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The new variable speed blower motor
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Question 7 of 25

7. Question

True or False: A hole or crack in a heat exchanger large enough to expose flue gases to the conditioned air stream causes CO to enter the air stream?

TRUE
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FALSE
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It depends
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Question 8 of 25

8. Question

True or False: Gas line can enter from either side with a flexible connector?

TRUE
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FALSE
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Question 9 of 25

9. Question

Where do you find the venting information?

The installation instructions
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GAMA venting tables
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A YouTube video
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Question 10 of 25

10. Question

What is the CFM of a gas furnace that is 110,000 BTUH input, 80% AFUE, and has a 45° Delta T (temperature rise)?

1862
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1811
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1852
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2000
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Question 11 of 25

11. Question

How does a gas furnace measure the CO?

A sensor in the heat exchanger
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Gas furnaces do not have integral CO detectors
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The pressure switch
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By the thermostat
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Question 12 of 25

12. Question

Carbon Monoxide Is a ___________, _____________, and _____________ gas.

Invisible
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Odorless
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Toxic
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Liquid
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Question 13 of 25

13. Question

Only homes with gas appliances should have CO detectors/monitors?

TRUE
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FALSE
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Question 14 of 25

14. Question

When twinning 2 furnaces can you have 2 different model numbers?

TRUE
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FALSE
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Question 15 of 25

15. Question

Based on this table what size vent pipe should you use for a 110,000 BTU 80% AFUE Natural Draft Gas Furnace with 6′ of vent height?

GAMA Vent Tables

4"
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5"
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6"
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7"
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Question 16 of 25

16. Question

A sediment trap is required on the gas line when __________________.

Only when unit is installed in a horizontal application
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Only when unit is installed in a downflow application
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Only when unit is installed in a upflow application
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Always
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Question 17 of 25

17. Question

Which motor can be used with Infinity / Evolution Products?

VCA
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VCT
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FCT
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PCM
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Question 18 of 25

18. Question

What does FCT stand for when referring to ECM motors?

Fixed-Speed Constant Turn
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Fixed-Speed Constant Torque
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Variable-Speed Constant Torque
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Fixed Velocity with Constant Torque
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Question 19 of 25

19. Question

What does VCA stand for when referring to ECM motors?

Variable-Speed Constant Airflow
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Variable Communicating Algorithm
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Veterinary Centers of America
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Velocity with Constant Airflow
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Question 20 of 25

20. Question

How do you contact Tech Support from the field?

Wingman app
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www.cesctechsupport.com
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sc.techsupport@carrierenterprise.com
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1-800-486-0550
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All of the above
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Question 21 of 25

21. Question

A single wall connector is acceptable in which application?

If the furnace is in a crawlspace
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If the furnace is upflow in a closet
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If the furnace is in the attic
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Never
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Question 22 of 25

22. Question

What is the last thing you do when converting a furnace to Propane?

Install spoiler screws
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Install Conversion Responsibility Label
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Check inlet gas pressure
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Wire LGPS in PRS circuit
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Question 23 of 25

23. Question

When twinning 2 furnaces the left hand furnace is __________?

The one on the left
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The upflow one
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The master
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The bigger one
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Question 24 of 25

24. Question

Where do you take the static pressure measurements for TESP?

In the plenums
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Just the supply plenum
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The inlet and outlet of the furnace
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It's really not necessary
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Question 25 of 25

25. Question

Where can I find the airflow if I know the static pressure?

The installation instructions
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Product Data
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The internet
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Phone a friend
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