Why when installing a Hot Water Cylinder would you ensure the plywood board the HWC is mounted on has a hole in the centre?

• To ensure expansion of the plywood

• To stop the plywood from warping

• To ensure any condensation on the underside of the cylinder can escape

• To enable inspection of the underside of the cylinder with an inspection camera

Answer explanation

It is important that condensation is not allowed to build up on the underside of the HWC. If it does it will drip onto the wooden base and overtime will rot the base and lead to catastrophic failure of the wooden base. That is the reason a hole must be made before the cylinder is placed on it.

Why is it imperative to ensure the F&E Cylinder is positioned lower than the Cold Water Storage Cistern?

• To ensure there is not one pipe circulation

• To ensure contaminated water cannot pass from Primary to Secondary

• To ensure the F&E cylinder never vents into the cistern

• To ensure the CWSC is bigger than the F&E

Answer explanation

In the event of pinholes forming in the Coil. If the F&E was installed above the CWSC there would be greater pressure in the F&E. So 'Dirty' water from the Primary Circuit would force its was into the Secondary Circuit.

By ensuring the pressure is greater in the CWSC the opposite happen so you are less likely to contaminate if pinholes are on the coil.

What is shown in the image?

• Gas Fired Water Cylinder

• Unvented Cylinder

• Domestic How Water Cylinder

• Mains Water Booster Cylinder

Answer explanation

To Boost Mains incoming supply.

If a kitchen sink macerator stops working what do you need to do to get it operational?

• Isolate the mains Supply, Unblock the grinder chamber

  Reconnect supply

• Isolate the mains Supply, Unblock the grinder chamber with the supplied key

  Reconnect supply

• Isolate the mains Supply, Unblock the grinder chamber with the supplied key

  Reconnect supply

  Press the rest button

• Isolate the mains Supply, Unblock the grinder chamber with the supplied key

  Press the reset button

  Reconnect supply

When did the Private Water Supplies Regulations come into force?

• 2008

• 2009

• 2014

• 2021

Draw the symbol for a Single Check Valve.

Answer explanation

What is the risk in a Fluid Category 4 liquid?

• No risk to health

• Slight risk to health

• Moderate risk to health

• Significant risk to health

Answer explanation

Please make sure you memories all!

What is shown in the image?

• Air conditioning unit

• Air Source Heat Pump

• Ground Source Heat Pump

What is the minimum recommended dimension in front of a toilet in mm?

What is shown in the image?

• Macerator

• Booster Pump

• Sump control Unit

• Solar System Circulating Unit