6035CHPPT2Q3

What is the purpose of a magnetic system cleaner in a central heating system?

• To alter the flow of water into the radiator

• To collect corroded iron particles and keep the system water in good condition

• To balance the system when it is commissioned

• To add chemical protection against scale and corrosion

How can an inhibitor be added to a central heating system?

• By turning the wheel head valve

• By removing the lock shield valve

• Through a radiator

• By flushing the magnetite away

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

• To balance the system when it is commissioned

• To alter the flow of water into the radiator

• To add chemical protection against scale and corrosion

• To collect corroded iron particles and keep the system water in good condition

Why is it important to balance the central heating system?

• To extend the life of the system

• To ensure maximum efficiency and minimum fuel usage

• To ensure the radiators warm up uniformly

• To collect corroded iron particles and keep the system water in good condition

What is the purpose of identifying the index radiator in a central heating system?

• To add chemical protection against scale and corrosion

• It's the radiator that will have a fully open lockshield.

• To balance the system when it is commissioned

• To collect corroded iron particles and keep the system water in good condition

What type of system is this?

• S Plan

• Y Plan

• C plan

• G Plan

What should be done after identifying the index radiator in a central heating system?

• Open all the radiator valves on the system fully

• Fire the boiler

• Feel which radiator heats up first and mark it 1

• Work from the index radiator back to the first radiator to warm up

What type of system is this?

• Two pipe semi gravity

• One pipe semi gravity with heat sink

• C Plan plus

• Two pipe semi gravity with heat sink

How much should each lockshield be turned in comparison to the last one when balancing?

• Fully open the lock shield valve

• Close the lock shield valve half a turn

• Close the lock shield valve one-and-a-half turns

• Close the lock shield valve one full turn

What is the purpose of a lockshield valve in a central heating system?

• To balance the system when it is commissioned

• To alter the flow of water into the radiator

• To ensure the radiators warm up uniformly

• To collect corroded iron particles and keep the system water in good condition