SOLAS Plumbing Practice Questions - SOLAS Ireland Plumbing Apprenticeship (Phase Written Exams) Exam

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In an indirect hot water cylinder, why is the primary (heating) water kept separate from the secondary (stored hot) water?

To increase the flow rate at taps To prevent the stored hot water being contaminated and to reduce scale and corrosion in the boiler circuit To allow the cylinder to operate without an immersion heater To eliminate the need for a cold feed

Correct Answer:

To prevent the stored hot water being contaminated and to reduce scale and corrosion in the boiler circuit

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