- Identify critical boiler safety devices and explain how each is tested
- Diagnose common gas-fired boiler malfunctions using temperature, pressure, and flow measurements
- Evaluate circulator pump performance and determine when replacement is required
- Explain condensing boiler operation and the role of return water temperature in efficiency
- Apply a systematic root cause analysis approach to hydronic boiler failures
- Identify the point of no pressure change and explain why the circulator pump should be installed pumping away from the expansion tank
- Describe the differences between 3-wire and 4-wire zone valves, including end switch function and troubleshooting procedures
- Diagnose common circulator and zone valve failures in multi-zone hydronic systems
Ready to test your knowledge?
Take the practice exam to see how well you've mastered the material.
Ready to test your knowledge?
Take the practice exam to see how well you've mastered the material.
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