GMJ 9189 Phase 3 MCQ Hot Water Systems Quiz

What units does a weir cup measure in?

• Bar

• Millimetres

• Litres per minute

• Degree centigrade

Which Approved Document covers hot water installation temperatures?

• Part L

• Part H

• Part G

• Part P

What is the approximate temperature range for instantaneous water heaters?

• 15-35^oC

• 20-45^oC

• 35-55^oC

• 45-65^oC

In a newbuild domestic property, where must the thermostatic mixer valve be installed?

• Prior to every hot water outlet

• Prior to the hot water cylinder

• Prior to a bath

• Prior to a shower

Which British Standard states the capacity of the hot water cylinder based on the number of persons occupying the property?

• BSEN12056

• BSEN806

• BS1010

• BS8000

By how much does water expand when it is heated between 4^oC and 99^oC?

• 4%

• 5%

• 6%

• 7%

When carrying out maintenance on an appliance, which document should be followed?

• Approved Document Part G

• BSEN806

• Manufacturer's instructions

• BS8000

According to BSEN806 Part 4, a newly installed hot water pipework system should be flushed through with which of the following?

• Drinking water

• Hot water

• Chlorinated water

• Cold water

How is the temperature of the hot water produced by a combination boiler varied?

• Altering the pressure of the water

• Higher or lower gas rates

• Controlled via a mixer valve

• Changing the flow rate of the water

Which of the following is not a design criteria for the D1 and D2 pipework?

• The tundish must be installed within 600mm of the cylinder

• The D2 pipework can be made from copper and PVCu

• The D2 pipework must fall continuously over its entire length

• The D1 must not be smaller than the outlet of the temperature pressure relief valve