What type of system uses an indirect-type hot water storage cylinder?

• Direct system

• Indirect system

• Closed system

• Open system

How many types of indirect hot water storage cylinders are mentioned?

• One

• Two

• Three

• Four

Which type of indirect hot water storage cylinder is self-venting?

• Double-feed

• Single-feed

• Triple-feed

• Quad-feed

What is the main difference between these storage cylinders and direct types?

• Size

• Material

• Heat exchangers

• Color

New modern hot water cylinders come with how much insulation?

• 50mm

• 100mm

• 200mm

• 25mm

What is the primary function of the heat exchangers in these cylinders?

• Cool the water

• Heat the secondary water

• Store the water

• Filter the water

Which document of the building regulations does hot water systems apply to??

• Part L1

• British Standards Institution

• WRAS

• Part G

A cylinder thermostat is located how far from the bottom of the hot water cylinder?

• 1/2 way

• 3/4

• 1/3

• 2/3

The boiler will heat the primary water up to

• 65 degrees

• 55 degrees

• 82-85 degrees

• 100 degrees

Why is the system called a double-feed system?

• It uses two types of metal

• It has two cisterns for feeding water

• It can heat and cool water

• It uses two different heating methods