Hot Water Systems Quiz

Which one of the following identifies the pipework circuit that can be fitted to a hot water system with excessively long pipework runs?

• Secondary recirculation circuit

• Condensate circuit

• Primary boosted circuit

• Pressure relief circuit

Which one of the following is fitted to a hot water storage cylinder to provide protection against type 1 pitting corrosion?

• Pressure reducing valve

• Pressure relief valve

• Magnetic conditioner

• Sacrificial anode

A coil in a storage cylinder

• Protects the cylinder from electrolytic corrosion

• Removes trapped air from the cylinder

• Transfers heat to the stored water

• Balances the cylinder correctly

Which one of the following best describes a hot water heater in an electric shower?

• Storage

• Indirect

• Combined

• Instantaneous

Which one of the following must be fitted as a servicing valve on a high pressure supply pipe to a feed and expansion cistern?

• Pressure reducing valve

• Spherical plug valve

• Full way gate valve

• Double check valve

Which one of the following is fixed directly to a kitchen sink?

• Globe tap

• Hose union tap

• Pillar tap

• Percussion tap

What is the minimum size of secondary open vent pipe from a hot water storage cylinder to a cold water storage cistern in a domestic property?

• 10mm

• 15mm

• 22mm

• 28mm

Which pipe is in an open vented hot water system is regarded as the safety relief pipe in the event of overheating?

• Cold feed

• Open vent

• Hot water outflow

• Cold water distributing

The vent pipe connected to a feed and expansion cistern of an indirect hot water system would require

• No valves

• Stop valve

• Two valves

• A single check valve

What is the minimum recommended distance between the top of a feed and expansion cistern and an adjacent sloping roof?

• 150mm

• 250mm

• 350mm

• 500mm