ACS Domestic Central Heating Boilers & Water Heaters Exam Practice Questions - ACS Domestic Central Heating Boilers & Water Heaters Exam

What is the primary purpose of an expansion vessel in a sealed central heating system?

To increase system pressure for better circulation. To store hot water for domestic use. To accommodate the expansion and contraction of system water volume due to temperature changes. To filter debris from the heating water.

Correct Answer:

To accommodate the expansion and contraction of system water volume due to temperature changes.

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