Podcast
Questions and Answers
What is a key feature of programming controllers that distinguishes them from primary controls?
What is a key feature of programming controllers that distinguishes them from primary controls?
- Internal programming (correct)
- Custom configuration
- Combustion air proving switch
- Pre-ignition interlock circuitry
Why are pre-ignition interlocks important in burner systems?
Why are pre-ignition interlocks important in burner systems?
- To control the low-fire position circuitry
- To ensure the pilot burner is lit
- To prevent unsafe conditions during pre-purge (correct)
- To regulate the airflow in the furnace
What is the purpose of purge proving circuitry in programming controllers?
What is the purpose of purge proving circuitry in programming controllers?
- To ignite the pilot burner
- To control the low-fire position circuitry
- To prevent accumulation of combustible gases (correct)
- To initiate the pre-purge process
Why were modern programming controllers designed to be electronic devices?
Why were modern programming controllers designed to be electronic devices?
What role does low-fire position circuitry play in a burner system?
What role does low-fire position circuitry play in a burner system?
Why do modern programming controllers have fixed tamper-proof sequence timers?
Why do modern programming controllers have fixed tamper-proof sequence timers?
What is the main purpose of a burner management system according to NFPA 85?
What is the main purpose of a burner management system according to NFPA 85?
What is NOT a function of a burner management system?
What is NOT a function of a burner management system?
Which safety controls communicate with the BMS to ensure safe burner operation?
Which safety controls communicate with the BMS to ensure safe burner operation?
According to Factory Mutual (FM), what can operators customize in a burner management system?
According to Factory Mutual (FM), what can operators customize in a burner management system?
What defines the unsafe conditions that a burner management system aims to prevent during burner operation?
What defines the unsafe conditions that a burner management system aims to prevent during burner operation?
How does a burner management system assist in reliable light off and shutdown?
How does a burner management system assist in reliable light off and shutdown?
What is the main purpose of Burner Management Systems (BMS)?
What is the main purpose of Burner Management Systems (BMS)?
Which category of burner management systems is the most complex?
Which category of burner management systems is the most complex?
What is the purpose of a safe start check in primary controls?
What is the purpose of a safe start check in primary controls?
What does the primary control do during the timed ignition period?
What does the primary control do during the timed ignition period?
Why is there a limit on the pilot trial for ignition period according to CSA B149.3?
Why is there a limit on the pilot trial for ignition period according to CSA B149.3?
What is the main purpose of interlock circuitry for fuel safety shutoff valves in burner systems?
What is the main purpose of interlock circuitry for fuel safety shutoff valves in burner systems?
Why is a flame failure response time important in primary controls?
Why is a flame failure response time important in primary controls?
In what situation does a primary control go to safety shutdown and lockout during the pilot trial for ignition period?
In what situation does a primary control go to safety shutdown and lockout during the pilot trial for ignition period?
What function does a flame relay primarily serve in a burner management system?
What function does a flame relay primarily serve in a burner management system?
When does a primary control maintain both pilot and main flame after ignition?
When does a primary control maintain both pilot and main flame after ignition?
