Gas Core Safety 6035-03 Level 3

Which image shows a Natural Draught Flue?

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Which image shows a Open Flue?

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Which of the following materials will be suitable for a condensing appliance chimney?

• Copper

• Mild Steel

• Stainless Steel

• Plastic

When a natural draught room-sealed flue terminal is located below a plastic gutter, a heat shield will be required if the terminal is closer than which of the following measurments?

• 300 mm

• 600 mm

• 1000 mm

• 1200 mm

Condensation in conventional natural draught open-flue Systems can be reduced by which of the following?

• Reduce the length of the flue run internally

• Increase the length of the flue run externally

• Using a double wall metallic Chimney with an air gap only for the flue length greater than 2 metres

• Using insulated double wall metallic chimney

Which is a full-bore valve?

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In a litchen with a NG cooker with no openable window to outside the ventilation requirements will be met if?

• There is extract ventilation of 10L/s located next to hob

• There is extract ventilation of 20L/s located next to hob

• There is extract ventilation of 30L/s located next to hob

• There is extract ventilation of 40L/s located next to hob

What is standing pressure in a low pressure system?

• 19 mb

• 19 to 26 mb

• 19 to 29 mb

• 21 mb nominal

What is Working pressure in a low pressure system?

• 19 mb

• 10 mb

• 19 to 29 mb

• 21 mb nominal

What is shown?

• U6

• E6

• G4

• G10