C H #3 pipe installation

Fill in the blank: R250 is a half hard straight length pipe available in diameters of 15mm, 22mm, and 28mm, and is sold in lengths of 1, 2, 3, and _______.

• 6m

• 4m

• 5m

• 7m

What are the sizes of small bore pipes used in fully pumped systems?

• 22mm and 15mm

• 12mm and 10mm

• 8mm and 6mm

• 28mm and 22mm

What is one advantage of using microbore pipes?

• They are cheaper

• They contain less water, so it heats up more quickly

• They are more durable

• They are easier to install.

Fill in the blank: An alternative pipework system called microbore uses ____, 10mm, 8mm, and 6mm pipe.

• 12mm

• 14mm

• 16mm

• 18mm

Microbore systems are initially piped up in small bore on the flow and return. This leads to a manifold that can either be ______ or linear.

• side entry.

• top entry.

• bottom entry.

• front entry.

What is a popular material for installations due to its ease of installation and allowance for long lengths with no connections?

• Copper

• Polybutylene

• Steel

• Aluminum

Polybutylene is sold in diameters of 10, 15, 22, and 28mm, in lengths of 3m, and coils of 25, 50, and ___.

• 100m

• 75m

• 150m

• 200m

Fill in the blank: The maximum vertical clipping distance for a 22mm LCS pipe is ___.

• 100mm

• 150mm

• 200mm

• 250mm

What is the maximum vertical clipping distance for a 28mm copper pipe?

• 1.8m

• 2.4m

• 3.0m

• 2.0m

What is the coefficient of expansion for Plastic uPVC?

• The coefficient of expansion for Plastic uPVC is typically around 0.1 to 0.2 mm/m°C.

• The coefficient of expansion for Plastic uPVC is typically around 0.5 to 0.6 mm/m°C.

• The coefficient of expansion for Plastic uPVC is typically around 0.3 to 0.4 mm/m°C.

• The coefficient of expansion for Plastic uPVC is typically around 0.7 to 0.8 mm/m°C.