When converting Gross heat input to net heat input you must?

Domestic Gas Ventilation Quiz

Quiz
•
Science
•
Professional Development
•
Medium

John Flower
Used 7+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Multiply by 1.11.
Divide by 1.11.
Divide by 1.09.
Multiply by 1.08.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the equivalent net kW figure for adventitious air?
14 kW.
28 kW.
1.11 kW.
7 kW.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When calculating compartment ventilation we must not make any allowances for?
For low level ventilation.
For high level ventilation.
For adventitious ventilation.
All of the above.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the smallest size of opening allowed in a vent used for supplying combustion air?
5 mm.
6 mm.
9 mm.
10 mm.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Vents supplying combustion air to a gas fired appliance passing through a cavity wall must be?
At least 100 mm2 cross sectional area.
Sleeved/ducted throughout the width of the wall.
Painted yellow ochre to identify it as a gas vent.
At least 50% larger than the actual requirement.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If a gas cooker requires ventilation it must be?
Provided at high and low levels within the same room as the cooker.
Sized in accordance the manufacturer's instructions or BS 5440-2.
Provided indirectly so as to reduce draughts.
Sized in accordance with BS 5440-1.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When determining the ventilation requirements for an open flued gas appliance within a room, it is derived from?
Heat input gross - 7 x 5 (cm2/kW).
Heat input net - 7 x 4.5 (cm2/kW).
Heat input net - 7 x 5 (cm2/kW).
Heat input gross - 7 x 4.5 (cm2/kW).
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