Question 1
Under CSA B149.1, which class of gasfitter certification is required to install and service appliances with a total input rating that exceeds 120 kW (400,000 Btu/h)?
Correct Answer:
Class A gasfitter
Question 2
Which CSA standard is the primary installation code a Class A gasfitter applies for natural gas and propane appliance and piping installations in Canada?
Correct Answer:
CSA B149.1
Question 3
A gasfitter is called to a site where a strong odour of mercaptan is detected near a commercial boiler room. What is the correct first action?
Correct Answer:
Eliminate ignition sources, ventilate, and shut off the gas supply
Question 4
What document must a gasfitter consult, in addition to CSA B149.1, before installing a CSA B149.3-approved process burner assembly on a large industrial appliance?
Correct Answer:
The appliance manufacturer's certified installation instructions
Question 5
Per CSA B149.1, which colour of personal protective equipment marking and what practice is required when purging a large gas main of air before commissioning?
Correct Answer:
Purge through a hose to a safe point outdoors, away from ignition sources
Question 1
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About this Exam

Prepare with the Red Seal Gasfitter Class A Practice Questions - Red Seal Gasfitter - Class A Exam practice quiz. This question bank includes 100 questions covering appliance, large, commercial, b149, and burner. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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Red Seal Gasfitter Class A Practice Questions - Red Seal Gasfitter - Class A Exam

This practice set contains 100 questions from the matching question bank and focuses on appliance, large, commercial, b149, and burner. 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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