Heating System Components part 3

What is the purpose of the lock shield valve in a heating system?

• To control the temperature of a single radiator

• To create a watertight seal on the threads

• To balance the system when commissioned

• To release excess pressure in the system

Why is it important to balance the heating system?

• To ensure uniform heating of radiators

• To allow the manual release of air

• To control the temperature of a single radiator

• To create a watertight seal on the threads

How can the index radiator be identified in a heating system?

• By measuring the temperature difference between the flow and return pipework

• By using a radiator key to open the valves

• By feeling which radiator heats up first

• By counting the number of radiators in the system

What is the purpose of a radiator key in a heating system?

• To control the temperature of a single radiator

• To allow the manual release of air

• To make up a radiator

• To create a watertight seal on the threads

What is the function of a bleed key in a heating system?

• To balance the system when commissioned

• To allow the manual release of air

• To create a watertight seal on the threads

• To control the temperature of a single radiator

Why are thermostatic radiator valves (TRVs) required to be fitted on systems according to Building Regulations?

• To control the temperature of a single radiator

• To allow the manual release of air

• To balance the system when commissioned

• To ensure uniform heating of radiators

What is the purpose of an automatic bypass valve in a heating system?

• To control the temperature of a single radiator

• To create a watertight seal on the threads

• To allow the manual release of air

• To prolong the pump life by releasing system pressure

What is the function of a filling loop in a pressurised sealed system?

• To allow the manual release of air

• To control the temperature of a single radiator

• To provide a temporary connection between the incoming mains and the central heating system

• To create a watertight seal on the threads

What is the purpose of an expansion vessel in a sealed system?

• To control the temperature of a single radiator

• To take up the expansion of heated water

• To allow the manual release of air

• To create a watertight seal on the threads

Where are automatic air release valves commonly found in a heating system?

• Inside the lock shield valve

• Inside the boiler

• Inside the radiator

• Inside the expansion vessel