Plumbing level 2 - PP2- Hot water

What is a direct cylinder?

• A cylinder with a heat exchanger inside

• A cylinder without a heat exchanger inside

• A cylinder that operates under mains pressure

• A cylinder with multiple coils

How is the water in a direct cylinder currently heated?

• Directly from the boiler

• Using a solar panel

• Via an immersion heater

• Using a heat exchanger

What is the primary function of a heat exchanger in an indirect cylinder?

• To separate the primary and secondary waters

• To heat the primary water

• To store hot water

• To pump water to the cylinder

What type of cylinder operates under mains pressure?

• Direct cylinder

• Indirect cylinder

• Unvented cylinder

• Primatic cylinder

What is the purpose of a sacrificial anode in a hot water cylinder?

• To heat the water

• To prevent galvanic corrosion

• To control the temperature

• To increase water pressure

What is the maximum temperature for hot water delivered to a bath according to Building Regulations part G?

• 60°C

• 48°C

• 43°C

• 38°C

What is the common rating for immersion heaters?

• 4kW

• 1kW

• 2kW

• 3kW

What type of shower relies on mains water pressure?

• Electric shower

• Solar shower

• Pumped shower

• Gravity shower

What is the purpose of a blending valve?

• To prevent water from boiling

• To increase water pressure

• To store hot water

• To mix hot and cold water to a safe temperature

What is the main gas responsible for global warming and ozone depletion produced by heating systems?

• Oxygen

• Methane

• Nitrogen

• Carbon dioxide