What is the primary focus of The Building Regulations Part L 2013?

• Design of electrical systems

• Conservation of fuel and power

• Water supply regulations

• Safety protocols in construction

Which document can be used as a guidance document to meet the requirements of Part L?

• The Domestic Heating Compliance Guide

• The Building Safety Manual

• The Electrical Compliance Guide

• The Plumbing and Heating Regulation Handbook

What does L1a refer to in the context of Building Regulations Part L 2013?

• Existing buildings other than dwellings

• New buildings other than dwellings

• New dwellings

• Existing dwellings

What is the minimum requirement for a boiler interlock in dwellings over 150m² with a hot water cylinder?

• At least two space heating circuits, each with independent time control, a room thermostat and TRVs

• A hot water circuit with independent time control and a cylinder thermostat

• A space heating circuit with independent time control, a room thermostat and TRVs

• A hot water circuit with a room thermostat and no independent time control

For a dwelling up to 150m² without a hot water cylinder, what is the requirement for a boiler interlock?

• A hot water circuit with independent time control and a cylinder thermostat

• At least two space heating circuits, each with independent time control, a room thermostat and TRVs

• A space heating circuit with independent time control, a room thermostat and TRVs

• No specific requirements mentioned

What is a characteristic of sealed (pressurised) wet central heating systems?

• Uses natural convection

• Requires a feed and expansion tank

• Operates at higher pressures

• Utilizes only one pipe for circulation

Which system is an example of an open-vented (low pressure) wet central heating system?

• Fully pumped systems

• Semi-gravity systems

• Combination boiler systems

• Systems using external expansion vessel

How is the hot water temperature controlled in the C-plan system?

• By a digital timer

• By a manual switch

• By a cylinder thermostat linked to a single two-port motorised zone valve

• By solar panels

What is the purpose of the 15mm cold feed pipe in the diagram?

• To supply cold water to the boiler

• To supply cold water to the radiators

• To supply cold water to the cylinder

• To drain the system

Where is the pump located in the C-plan (two-pipe) semi-gravity system diagram?

• Next to the boiler

• Between the cylinder and the radiators

• Near the wiring centre

• Inside the cylinder