Central Heating Quiz phase 2 LO1.4/1

What do Thermostatic Radiator Valves react to?

• Water temperature

• Air temperature

• Pressure

• Flow rate

Where should an automatic air valve be placed on a system?

• At low points

• At high points

• At the boiler

• At the radiator

Why must temporary filling loops be removed after filling a heating system?

• To prevent leaks

• To prevent airlocks

• To prevent cross-connection

• To prevent overheating

Why should F&E cisterns be properly sized?

• To save space

• To improve water quality

• To accommodate water expansion

• To reduce installation cost

What head of pressure is sufficient for domestic central heating circulating pumps?

• 2m to 4m

• 4m to 6m

• 6m to 8m

• 8m to 10m

Where should a Thermo-mechanical cylinder control valve be fitted on the heating system primary circuit?

• On the flow pipe

• On the return pipe

• On the expansion pipe

• On the boiler pipe

Why do we use inhibitor in a central heating system?

• To increase water pressure

• To prevent corrosion

• To improve heat transfer

• To reduce noise

What type of valve is used to prevent unwanted gravity hot water circulation in semi-gravity heating systems?

• Thermostatic radiator valve

• Lockshield valve

• Anti-gravity valve

• Drain off valve

What are drain off valves used for in a heating system?

• To control water flow

• To regulate system pressure

• To remove air from the system

• To drain the system water

What are additives used for in a central heating system?

• To increase water temperature

• To improve water clarity

• To prevent system corrosion

• To reduce energy consumption