What heating system uses a difference in the density of water to circulate heat to a hot water cylinder?

• Y plan

• Gravity fed

• S plan+

• Hypocaust

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 is the main purpose of a central heating system?

• To heat up the core of the building

• To provide thermal comfort to a property

• To supply heating to a single room

• To provide heat to a number of properties

What is at the highest point of a vented heating system?

• Expansion vessel

• Feed and expansion cistern

• Cold feed isolation valve

• Automatic air vent

What is the primary function of the open vent on a central heating system?

• To allow the system to pressurise

• To allow the system to operate at atmospheric pressure

• To provide sufficient oxygen to the heating system

• To provide a means of ventilation when filling the system

1. What type of heating system incorporates a three-port valve that gives priority to the hot water system?

• Y plan

• S plan

• S plan+

• W plan

1. What three components are required when converting an open vented system with a sealed system?

• Automatic air vent, low loss header, filling loop

• Filling loop, expansion vessel, pressure gauge

• Pressure relief valve, filling loop, expansion vessel

• Expansion vessel, automatic air vent, pressure gauge

1. What is the name of the component below?

• Mixer bar

• Low loss header

• Manifold

• Filling loop

1. What type of heating system charges using low-cost off-peak tariffs?

• District

• Electric storage

• Y plan

• Warm air

What type of heating system can be split into zones that serve a cluster of houses and buildings?

• District

• Underfloor

• Microbore

• Thermosyphon