Correct the following statements if necessary.

Date: 2015-10-07; view: 641.

Complete the following sentences according to the text.

COMPREHENSION CHECK

1) A water central heating system consists of ...

2) Where the ceiling of the room is suspended, the pipework is installed …

3) The pipework must be insulated where…

4) A major disadvantage of single pipe loop arrangement is that …

5) In feed and return pipe system the heated water from the boiler is fed to …

6) The micro bore system uses normal pipework for …

7) In micro bore pipework special radiator fitting may be used so that …

1) The boiler heats the water and circulates the water through the pipework and radiators and back to the boiler.

2) The pipework is usually run between the joists or across the joists through cut-outs cut in the top of the joists.

3) A single pipe loop arrangement has only one loop of pipework running from the boiler and returning to the boiler.

4) Natural convection causes the cooler water to rise into the radiator displacing heated water back into the pipe.

5) Single pipe loop systems can still be found in older domestic premises and they are generally considered efficient.

6) In feed and return pipe system the size of circulating pump limits the number of radiators.

7) The pipework between the manifolds and each radiator is usually more than 5 metres.

8) In micro bore pipework pumps are usually more prone to wear.