NV C-21B Air Conditioning Practice Questions - Nevada C-21B Air Conditioning Contractor Examination Exam - NV C-21B Air Conditioning Practice Questions - Nevada C-21B Air Conditioning Contractor Examination Exam

Question 1

Under UMC 2018 Section 310, a horizontal condensate waste pipe from a cooling coil shall have a slope of not less than:

1/8 inch per foot (1 percent) toward the point of disposal 1/2 inch per foot toward the air handler Level, provided the pipe is 1 inch or larger 1/4 inch per foot toward the refrigerant suction line

Correct Answer:

1/8 inch per foot (1 percent) toward the point of disposal

Question 2

Where overflow from a cooling-coil drain pan would damage the building, UMC 2018 requires which additional protection?

A larger primary drain only, with no secondary device A plugged overflow opening so the pan can hold more water A hose from the pan to the roof scupper A secondary drain, an auxiliary pan with its own drain, or a water-level device that shuts the equipment off

Correct Answer:

A secondary drain, an auxiliary pan with its own drain, or a water-level device that shuts the equipment off

Question 3

Per UMC 2018 Table 310.3, what is the minimum condensate waste-pipe diameter for a single air-cooling coil of 15 tons, assuming the equipment outlet is not larger?

1/2 inch 2 inches 1-1/4 inches 3/4 inch

Correct Answer:

3/4 inch

Question 4

A Las Vegas packaged rooftop unit is rated 36 tons of refrigeration. Using UMC 2018 Table 310.3 and assuming the factory outlet is not larger, the minimum condensate waste-pipe size is:

1 inch 3/4 inch 1-1/2 inches 2 inches

Correct Answer:

1 inch

Question 5

Where cooling-coil condensate is discharged into the building drainage system, UMC 2018 requires the connection to be made:

With a direct sanitary tee into a soil stack By pumping the water into a potable-water hose bibb By an indirect waste pipe through an air gap or air break to an approved receptor By tying the drain into a Type B vent cleanout

Correct Answer:

By an indirect waste pipe through an air gap or air break to an approved receptor

Question 1

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Prepare with the NV C-21B Air Conditioning Practice Questions - Nevada C-21B Air Conditioning Contractor Examination Exam practice quiz. This question bank includes 100 questions covering heat, furnace, temperature, cooling, and refrigerant. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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NV C-21B Air Conditioning Practice Questions - Nevada C-21B Air Conditioning Contractor Examination Exam

This practice set contains 100 questions from the matching question bank and focuses on heat, furnace, temperature, cooling, and refrigerant. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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NV C-21B Air Conditioning Practice Questions - Nevada C-21B Air Conditioning Contractor Examination Exam

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