🔍 Key Concepts

• 46 CFR requirements for hot water supply boilers • Difference between temperature control and pressure protection devices • Why boilers must be protected from overpressure

💭 Think About

• Look at which option describes a device that protects the boiler if pressure rises too high, regardless of temperature control settings. • Consider whether a fixed temperature (like 212°F) is the right way to limit boiler pressure in all conditions. • Think about what device is universally required on pressure vessels that can build up steam or hot water pressure.

✅ Before You Answer

• Verify in 46 CFR what safety device is specifically required for electric hot water supply boilers. • Check which options are about alarm/indication versus automatic safety protection. • Confirm whether the standard protection for boilers is based on pressure relief rather than only temperature or alarms.