Hot water system | Quiz

What is the minimum recommended distribution temperature of hot water supplied by a storage cylinder?

• 48°C

• 55°C

• 60°C

• 65°C

Which Building Regulation relates to the hot water delivery systems in dwellings?

• Part F

• Part G

• Part P

• Part L

Which of the following is classed as a localised hot water system?

• Under-sink single point heater

• Thermal store

• Combination boiler

• Open vented

Within an open vented hot water system, which of the following are the correct connection methods for the open vent pipe off the draw-off pipe?

• Open vent a minimum of 15mm diameter connected within 450mm of the draw-off connection from the cylinder

• Open vent a minimum of 15mm diameter connected within at least 450mm of the draw-off point from the cylinder

• Open vent a minimum of 22mm diameter connected within 450mm of the draw-off connection from the cylinder

• Open vent a minimum of 22mm diameter connected within at least 450mm of the draw-off point from the cylinder

The safety devices within an unvented hot water cylinder are designed to prevent the water from exceeding which of the following temperatures?

• 60°C

• 65°C

• 95°C

• 100°C

Where should a secondary return be connected within a hot water storage cylinder?

• A quarter of the way down

• Halfway down

• Two-thirds of the way from the bottom

• A quarter of the way up

Identify the components in the unvented hot water system.

• 1, Strainer

  2, Isolation valve

  3, Expansion relief valve

  4, Check valve

• 1, Isolation valve

  2, Strainer

  3, Check valve

  4, Expansion relief valve

• 1, Pressure reducing valve

  2, Isolation valve

  3, Check valve

  4, Strainer

• 1, Isolation valve

  2, Strainer

  3, Pressure reducing valve

  4, Check valve

What temperature should the temperature relief valve fitted to an unvented hot water storage vessel be set to discharge at

• 60°C

• 72°C

• 90°C

• 95°C

An unvented cylinder can only be installed by whom?

• The customer

• IPHE registered plumber

• Any person who follows the manufacturer's instructions

• A competent person

What material must a secondary circulation pump be made from?

• Bronze

• Pressed steel

• Zinc

• Cast iron