Cold Water Systems LO2

When installing an incoming mains, the pipe should be laid between:

• 500mm and 1200mm

• 800mm and 1500mm

• 750mm and 1350mm

• 1000mm and 2000mm

What colour is MDPE?

• Black

• Blue

• Red

• Yellow

What is the minimum size pipe modern properties are supplied with?

• 15mm

• 22mm

• 25mm

• 28mm

At which point on a cold water supply system is regulated under the Water Regulations?

• From the ferrule

• From the water treatment plant

• From the Boundary stop valve

• From the stop valve inside the property

All meters must be installed in a chamber located at the boundary of the property.

• True

• False

Due to MDPE degrading in sunlight, what is the maximum permitted length you can install above the finish floor level?

• 400mm

• 275mm

• 200mm

• 150mm

In accordance with the Water Regulations, where should the stop valve be located?

• Inside the building, below floor level, as close as possible to the door

• Inside the airing cupboard, as close as possible to the door

• Outside the building, as close as possible to the property boundary

• Inside the building, above floor level, as close as possible to the point of entry

Where must you install drain-offs in a plumbing system?

• At every low point in the system

• At every high point in the system

• In areas out of sight to the homeowner

• Just at the point of entry to the property

Where newer properties will typically have a 25mm MDPE service pipe, older properties will have either:

(Select 3)

• 20mm MDPE pipe

• 20mm copper pipe

• 20mm lead pipe

• 20mm LCS pipe

Select all correct options.

Grey water recycling is used on which appliances?

• WC cisterns

• Washing machines

• Dishwashers

• Basins