Hot Water Systems Quiz L3P2U6,1.8;3

What are the three sections of the discharge pipework?

• Tundish, D2, D1

• Tundish, D1, D2

• D1, D2, Tundish

• D1, Tundish, D2

According to the regulations, what should be the minimum diameter of the D1 pipework?

• 28mm

• 22mm

• One size larger than the outlet of the safety device

• Same as the outlet of the safety device

What is the basic formula for determining the size of the D2 pipework?

• Same size as the D1 pipework

• Depends on the length of the pipe run

• Two sizes larger than the D1 pipework

• One size larger than the D1 pipework

What is the maximum resistance allowed for a straight length of 35mm copper discharge pipe from a G¾ temperature relief valve?

• 1.0m

• 1.4m

• 1.7m

• 2.3m

If the D2 discharge pipe is to be run in 22mm pipe and has 2 elbows or bends fitted, what is the maximum pipe run?

• 9.6m

• 8.0m

• 10.2m

• 7.4m

From a G1/2 TPRV With a proposed length for a D2 pipework of 6m and requiring 6 bends what would the equivalent length, and pipe D2 diameter be?

• 12.0m @28mm

• 9.0m @22mm

• 6.0m @28mm

• 4.2m @ 35mm

What is the minimum pipe size that could be used for a D2 pipework run that is 8m in length and requires 5 bends?

• 22mm

• 42mm

• 28mm

• 35mm