6035 Hot Water LO1

Which act governs the codes of practice for hot and cold water services?

• WRAS

• BS6700

• BS8000

• BS1212

Define: Instantaneous hot water.

• Uses a hot water cylinder, which is heated by a boiler and distributes the hot water.

• Uses a CWSC, which distributes the hot water via the cold feed pipe.

• Uses a combination boiler, which heats water on demand and distributes the hot water.

Identify: Open vented, indirect gravity fed system.

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Identify: Direct hot water cylinder via a boiler.

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Statement: BS6700 recommend that the capacity of the CWSC should be at least the same capacity as the cylinder.

• True

• False

To prevent parasitic circulation, how long should the pipe from the cylinder be before the connection to the vent pipe is made?

• 150mm

• 200mm

• 450mm

• 1000mm

BS6700 states that which valve should be installed on the vent pipe?

• Fullway gate valve

• Stop valve

• Spherical plug valve

• No valve

The minimum size in which the primary flow and return pipework can be if a solid fuel boiler is installed?

• 15mm

• 22mm

• 25mm

• 28mm

The immersion heaters are rated at:

• 1.5kW

• 3kW

• 4.5kW

• 6kW

The cylinder thermostat is located:

• At the base of the cylinder

• At the top of the cylinder

• One-third of the way up the cylinder

• One-quarter from the cylinder's top