Module 12 Chimney Standards Flashcards
What is a chimney?
a) Structure enclosing a flue(s)
b) Passage to convey combustion products to the outside
c) a + b
a) Structure enclosing a flue(s)
What is a flue?
a) Structure enclosing a flue(s)
b) Passage to convey combustion products to the outside
c) a + b
b) Passage to convey combustion products to the outside
The width of a hearth should be:
a) 500mm
b) 750mm
c) 1000mm
a) 500mm
The minimum thickness of a hearth should be:
a) 100mm
b) 125mm
c) 150mm
b)125mm
A hearth can be made of:
a) brick
b) tile
c) concrete
d) any of the above
c) concrete
A flue must contain a circle of a minimum diameter of:
a) 75mm
b) 125mm
c) 150mm
d) 175mm
d) 175mm
The maximum angle a flue can be is:
a) 33 degrees
b) 45 degrees
c) 66 degrees
d) 90 degrees
b) 45 degrees
For new installations a flue must be lined with:
a) Clay linings to BS EB 1457
b) Kiln burnt aggregate and high alumina cement linings
c) Clay pipes and fittings to BS65
d) All of the above
d) All of the above
In new installations are stainless steel linings recommended or not?
a) Yes
b) No
b) No
Why?
They corrode and disintegrate from gases and condensation produced by solid fuel
Can an existing chimney, in good condition, be used unlined if the dimensions are greater than 225 x 225mm (9 x 9)
a) Yes
b) No
a) Yes
With an existing chimney why may you need to line it?
a) Signs of loose brick / mortar
b) Leakage of combustion products into rooms
What is 1 called in the picture?
Closure Plate
What is 2 called in the picture?
Flue Spigot
If an appliance is fitted in an unlined brick chimney what should the void depth and volume be?
a) 250mm / 12 litres
b) 250mm / 0.002m3
c) Both of the above
a) 250mm / 12 litres
If an appliance is fitted in a lined chimney that has never been used for solid fuel or oil what should the void depth and volume be?
a) 250mm / 12 litres
b) 75mm / 0.002m3
c) 250mm / 2 litres
d) Any of the above
b) 75mm / 0.002m3
If an appliance is fitted in a lined chimney that has previously been used for solid fuel or oil what should the void depth and volume be?
a) 250mm / 0.012 m3
b) 75mm / 2 litres
c) 250mm / 2 litres
d) Any of the above
a) 250mm / 0.012 m3
If an appliance is fitted into a flue block/metal chimney which has never been used with solid fuels or oil what should the void depth and volume be?
a) 250mm / 0.012 m3
b) 75mm / 2 litres
c) 250mm / 2 litres
d) Any of the above
b) 75mm / 2 litres
If an appliance is fitted into a flue block/metal chimney which has previously been used with solid fuels or oil what should the void depth and volume be?
a) 250mm / 0.012 m3
b) 75mm / 2 litres
c) 250mm / 2 litres
d) Any of the above
a) 250mm / 0.012 m3
Can new chimneys be constructed unlined?
a) Yes
b) No
c) Doesn’t matter
b) No
The gas appliance classification for a flueless appliance is:
a) A
b) B
c) C
d) None of the above
a) A
The gas appliance classification for a open flued appliance is:
a) A
b) B
c) C
None of the above
b)B
The gas appliance classification for a room sealed appliance is:
a) A
b) B
c) C
None of the above
c) C
If a chimney is unlined or lined but previously been used with oil or solid fuels the void depth and volume should be:
a) 75mm / 0.012 m3
b) 250mm / 12 litres
c) 75mm / 2 litres
d) 250mm / 0.002 m3
b) 250mm / 12 litres
If the flue uses thermal convection to aid the removal of combustion products is it:
a) Forced draft
b) Natural draft
c) Flue draft
b) Natural draft
Which of the following is a function of a draft diverter:
a) diverts down draft in the secondary flue
b) allows flue products to be diluted
c) breaks the pull of the secondary flue
d) all of the above
d) all of the above
What does the image depict?
A draft diverter
