HW Systems

What is the minimum distance the distribution pipe from the cylinder should be installed horizontally before it connects to the open vent pipe?

• 450 mm

• 750 mm

• 1350 mm

• 1650 mm

The minimum vertical height required for a gravity shower to work is

• 150 mm

• 750 mm

• 1000 mm

• 2000 mm

To ensure correct operation, a single feed indirect cylinder requires which one of the following to be formed?

• a heat exchanger

• an air bubble

• an annulus

• a flute

The temperature of stored hot water in a standard indirect cylinder will be

• equal at both the top and bottom of the cylinder

• lower at the top of the cylinder than the bottom

• higher at the top of the cylinder than the bottom

• lower in the middle of the cylinder than the bottom

the hot water distribution pipe connection from the cylinder should be in the

• top 450 mm of the cylinder

• top third of the cylinder

• top of the cylinder

• bottom of the cylinder

what is the correct position for the cold feed pipe connection to the cylinder in the cold water storage cistern

• below the cold water distribution pipe

• above the cold water distribution pipe

• at the same height as the other connections

• above the hot distribution pipe

A cylinder thermostat is most likely to be located

• 1/3 down from the top of the cylinder

• 1/3 up from the bottom of the cylinder

• 1/4 down from the top of the cylinder

• 1/4 up from the bottom of the cylinder

The type of shower pump shown is

• single impeller

• twin impeller

• whole house booster pump

Installing which one of the following would overcome problems caused by long dead legs

• a primary circuit

• a secondary circuit

• a heating circuit

• a gravity circuit

The fitting shown is a

• tap adaptor

• tank connector

• cylinder union