313D Regulations, Codes, and Safety Standards 2

Question 1

Under EPA Section 608, what is the maximum allowable leak rate for a residential system with a charge greater than 50 pounds before repair is required?

Accepted Answer

15% per year

Answer

EPA Section 608 sets a 15% annual leak rate threshold for comfort cooling appliances with charges over 50 pounds, requiring repair within 30 days of discovery.

Question 2

Which ASHRAE standard sets minimum energy efficiency requirements for residential HVAC equipment in the United States?

Accepted Answer

ASHRAE 90.1

Answer

ASHRAE 90.1 establishes minimum energy efficiency standards for HVAC equipment, and residential equipment must meet these as a baseline for code compliance.

Question 3

What does the AHRI Certification Program verify for residential air conditioning equipment?

Accepted Answer

Published capacity and efficiency ratings are accurate

Answer

The AHRI Certification Program independently tests and verifies that manufacturers' published capacity and efficiency ratings match actual performance.

Question 4

Which federal regulation requires HVAC technicians to be certified before purchasing refrigerants in containers larger than 2 pounds?

Accepted Answer

CAA Section 608

Answer

Clean Air Act Section 608 requires technicians to hold EPA certification to purchase refrigerants in containers exceeding 2 pounds.

Question 5

What minimum clearance does the International Mechanical Code typically require between a rooftop condensing unit and a parapet wall?

Accepted Answer

18 inches

Answer

The IMC generally requires at least 18 inches of clearance between a condensing unit and any wall or obstruction to ensure adequate airflow and serviceability.

(313D) Residential Air Conditioning Systems Mechanic Certification Practice Test

(313D) Residential Air Conditioning Systems Mechanic Certification Practice Test

313D Regulations, Codes, and Safety Standards 2