20. Ventilation Grilles

• Ventilation
• Further Education (Key Stage 5)

20. Ventilation Grilles

This lesson is intended to be a supplement and revision aid. 

It is to be used together with your in-class lesson notes and gas book.

Completion of this lesson adds to your Guided Learning Hours.

What is the minimum distance between an air vent placed below the terminal of a fan draught appliance of 23kw

1. 300mm
2. 600mm
3. 400mm
4. 1500mm

Why must a lower vent be placed no higher than 450mm from floor level?

1. To allow water to enter in case of a fire
2. To minimise the spread of smoke throughout a house in case of fire
3. To avoid draughts round peoples ankles
4. To allow pets to breath fresh air

Ventilation is going through 3 walls and the outside ventilation requirement is 120cm2 what is internal ventilation requirement

1. 60cm2
2. 120cm2
3. 180cm2
4. 240cm2

An open flued appliance of 8kw with no ODS (Oxygen Depletion Sensor) can use ventilation air taken through a bedroom

1. True
2. False

An open flued appliance of 14kw with an ODS (Oxygen Depletion Sensor) can use ventilation air taken through a bedroom

1. True
2. False

An open flued appliance of 8kw with an ODS (Oxygen Depletion Sensor) can use ventilation air taken through a bedroom

1. True
2. False

An open coal fire has a stated OUTPUT of 3kw.
What is its effective heat INPUT

1. 5kw
2. 30kw
3. 6kw
4. 0.5kw

A Decorative Fuel Effect open flued fire of 9kw requires how much ventilation?

1. 10cm2
2. No ventilation is required
3. 45cm2
4. 100cm2

Where ventilation for a flueless appliance is taken from a room and not directly from outside it must be

1. Increased by 50%
2. Marked with a notice stating "Do not Cover"
3. Ducted so that it is "direct from outside air"
4. Flueless appliances cannot be ventilated this way

Write down 3 things you learned in this lesson.

Have students enter three things they learned in this lesson. With this they can indicate their own learning efficiency of this lesson.

Write down 2 things you want to know more about.

Here, students enter two things they would like to know more about. This not only increases involvement, but also gives them more ownership.

Ask 1 question about something you haven't quite understood yet.

The students indicate here (in question form) with which part of the material they still have difficulty. For the teacher, this not only provides insight into the extent to which the students understand/master the material, but also a good starting point for the next lesson.