Phase 2 Hot Water systems

Which Building Regulation covers Hot Water

• Part L

• Part G

• Part P

• Part A

What percentage of system size should an external expansion vessel be a minimum of?

• 4%

• 5%

• 6%

• 3%

The system compromises of a cylinder in which a vent pipe comes off the hot distribution pipe

• Vented

• Unvented

The secondary water is heated via primary coil through convection

• Direct

• Indirect

The Secondary water is heated via an immersion heater

• Direct

• Indirect

The average UK domestic immersion heater is 3kw

• True

• False

What are the 3 different tiers of safety in an unvented system

• control stat

• high limit stat

• temperature relief valve

• expansion vessel

What temperature does a temperature relief valve discharge at?

• 90-95

• 80-85

• 75-80

• 100 and above

What temperature is secondary water once heated in the cylinder

• 60-65

• 50-55

• 70-75

• 75-80

D1 pipework from the Temperature relief valve and Expansion relief valve can be joined togther

• True

• False