Level 3 8202 Hot Water

What does the term Combination Tank refer to in Domestic Hot Water Heating Systems?

• A small hot water storage system of less than 80 liters

• An integrated CWSC sitting on top of a HWC to save space

• A system that does not use a CWSC

• A HWC made only from stainless steel

What is the primary purpose of a Thermostatic Mixing Valve (TMV) in a Domestic Hot Water System?

• To regulate water pressure within the system

• To mix hot and cold water to a safe temperature

• To prevent backflow of water

• To isolate the system for maintenance

Which type of pump is most commonly used in Domestic Hot Water Circulation Systems?

• Centrifugal pump

• Diaphragm pump

• Submersible pump

• Positive displacement pump

What is the main advantage of using a pressurised system for Domestic Hot Water?

• It does not require a cold water storage tank

• It can only operate at low temperatures

• It is less efficient than non-pressurised systems

• It requires more maintenance

How does a Solar Thermal Collector work in a Domestic Hot Water System?

• By converting electrical energy into heat

• By using a refrigeration cycle to generate heat

• By absorbing solar radiation and converting it into heat

• By mechanically compressing air to generate heat

What is the purpose of an expansion vessel in a Domestic Hot Water System?

• To store extra hot water

• To increase water pressure in the system

• To accommodate water expansion as it heats up

• To filter impurities from the water