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Vented and Unvented

Authored by Tim McNeill

Professional Development

12th Grade

Used 1+ times

Vented and Unvented
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8 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is an essential feature of an open vented system in hot water systems?

It must have a closed vent pipe.

It must have a vent pipe open to the atmosphere at all times.

It should have multiple valves installed on the vent pipe.

The vent pipe should terminate below the cold water storage cistern.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Where must the open vent from the hot water cylinder terminate in an open vented system?

Below the cold water storage cistern.

Inside the hot water cylinder.

Over the cold water storage cistern.

Within the central heating system.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why should there be no valves installed on the vent pipe of an open vented system?

To increase water pressure.

To prevent accidental closure.

To regulate the water temperature.

To control the flow of hot water to the taps.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is an unvented hot water system?

A system that requires a feed system and is open to the atmosphere

A sealed system of pipework and components that does not require a feed system

A system that is only installed in commercial settings

A system that relies solely on natural temperature control without safety devices

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does an unvented system differ from an open vented system?

An unvented system has an open vent pipe

An unvented system is not directly fed from the mains

An unvented system has no open vent pipe

An unvented system does not use an expansion vessel

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What accommodates the expansion of heated water in an unvented system?

A pressure-reducing valve

An internal or external expansion vessel or bubble

A temperature relief valve

A check valve

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Who is qualified to install unvented systems?

Any person with basic plumbing knowledge

A competent person

Only the manufacturer of the system

A person with an electrical background

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