WorksheetsCentral Heating Systems Quiz L3P2U7,1.4;1
Total questions: 10
Worksheet time: 5mins
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
