Central Heating Systems Quiz L3P2U7,1.4;1

What does a Thermostatic Radiator Valve react to?

• Volume

• Pressure

• Air temperature

• Water temperature

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

• At the end

• At low points

• At high points

• At the center

Temporary filling loops must be removed after filling a heating system to prevent what from occurring?

• Leakage

• Overheating

• Corrosion

• Cross-connection leading to backpressure

Why should F&E cisterns be properly sized?

• To accommodate the expansion of water

• To save space

• To reduce cost

• To increase efficiency

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

• 10m to 15m

• 15m to 20m

• 6m to 10m

• 3m to 6m

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

• At the end

• At the center

• On the flow pipe

• On the return pipe

Why do we use inhibitor in a central heating system?

• To improve circulation

• To reduce temperature

• To prevent corrosion of the system and components

• To increase pressure

What are the types of additives used in central heating systems?

• Inhibitor, De-scaler, De-sludger, System cleanser

• Inhibitor, De-scaler, De-sludger, Neutraliser

• Inhibitor, De-scaler, System cleanser, Neutraliser

• Inhibitor, De-sludger, System cleanser, Neutraliser

What does a Lockshield valve not have?

• Pressure gauge

• Balancing capability

• Thermostatic control

• Operating wheel head

What is the purpose of drain off valves in a heating system?

• To prevent corrosion

• To allow total draining of the system water

• To improve circulation

• To increase pressure