Plumbing Level 2 - Central Heating

The British Standard for the design of water based heating systems is:

• BS 6700

• BS EN 12828

• BS EN 12058

• BS 9001

1. The conservation of fuel and energy is covered by which approved document?

• Building Regulations part P

• Building Regulations part M

• Building Regulations part H

• Building Regulations part L

What are low pressure open vented systems?

• Fed from a feed and expansion cistern located at high level. These can be fully pumped or gravity systems.

• Fed directly from the mains cold water and incorporate an expansion vessel to take up the expansion of the heated water.

• A more modern, fully pumped system

• Combination boiler system

What are pressurised sealed systems?

• These are fed directly from the mains cold water and incorporate an expansion vessel to take up the expansion of the heated water. This type is more modern, fully pumped, or combination boiler system.

• Low pressure systems, fed by gravity systems

• systems with high amounts of unwanted pressure build up

• Systems that try avoid pressure

This component is called the:

• Feed and expansion cistern

• HWSC

• Boiler

Which part of the system is this located?

• Highest

• Lowest

The main purpose of this item is to allow for:

• Expansion

• Cheap installation

• Easy access to water

• Central Heating

The flow of water to this item is controlled by a:

• Float operated valve

• Warning pipe

• Pre-set timer

• 22mm copper pipe

The expansion in an open vented system is around

• 5%

• 4%

• 25%

• 14%

What is the primary function of the open vent pipe on a central heating system? Pick two.

• To provide a safety outlet, should the system overheat

• To allow the system to operate at atmospheric pressure

• To allow for water intake

• To stop rodents/debris entering the system