TheoryFree SHSI Test Prep Practice Test PDF
Download a free SHSI Test Prep practice test PDF with 30 questions, answers and explanations, then continue with online mock exams.
Free SHSI Test Prep PDF with 30 questions
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The PDF includes 30 SHSI Test Prep questions with answers and explanations.
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Q1When inspecting a solar water heating system with potable water connections, which device is required to prevent backflow of heat transfer fluid into the potable water supply?
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✓ Correct answer: Backflow prevention device
A backflow prevention device is required by plumbing codes to prevent non-potable heat transfer fluid from contaminating the potable water supply in case of a pressure difference that could cause reverse flow.
Q2During inspection of a solar water heating system, what is the primary purpose of a temperature and pressure relief valve on the storage tank?
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✓ Correct answer: To prevent tank rupture by releasing water when temperature or pressure exceeds safe limits
The temperature and pressure relief valve is a critical safety device that prevents excessive pressure or temperature buildup in the storage tank by releasing water when either parameter exceeds safe limits.
Q3When inspecting a thermosiphon solar water heating system with potable water, what must an inspector verify about the temperature and pressure relief valve?
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✓ Correct answer: That it discharges to a safe location according to local code requirements
Code requirements specify that the T&P relief valve must discharge to an appropriate location where it won't cause property damage or create a scalding hazard to people.
Q4What type of heat exchanger is typically required when separating potable water from toxic heat transfer fluid in a solar water heating system?
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✓ Correct answer: Double-wall heat exchanger with visible leak path
Double-wall heat exchangers with a visible leak path between the walls provide an additional layer of protection against cross-contamination of potable water with toxic heat transfer fluid.
Q5According to plumbing codes, what is the maximum temperature at which potable water should be delivered to fixtures in a solar water heating system?
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✓ Correct answer: 120°F (49°C)
To prevent scalding, plumbing codes typically specify that water delivered to fixtures should not exceed 120°F (49°C), which is ensured by properly installed mixing valves.
Q6When inspecting a solar water heating system's potable water connections, which valve should be present to allow maintenance of the solar system without shutting down the entire building's water supply?
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✓ Correct answer: Isolation valves
Isolation valves are required to allow service and maintenance of the solar heating system components without interrupting water service to the rest of the building.
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