NEW
Font size
WorksheetsACS CCN1 Quiz 3
Total questions: 11
Worksheet time: 6mins
The purpose of a down draught diverter is to?
To divert the down draught to prevent interference with combustion
To direct carbon monoxide into chimney
To prevent down draught
To prevent condensation from entering the applaince
An open chimney should rise vertically by what length in mm before any change in direction?
300mm
600mm
900mm
1200mm
Any bends used on a chimney should not exceed?
35°
45°
60°
90°
The maximum length of twin wall chimney pipe run to outside is?
1m
2m
3m
4m
The minimum clearance from the inner part of a twin wall chimney pipe to combustible material is?
15mm
25mm
50mm
170mm
A terminal is not required on a chimney which has an outlet larger than?
100mm
125mm
150mm
170mm
What is the minimum distance that a chimney outlet should terminate above the ridge on a pitched roof?
250mm
600mm
1m
1.5m
The annualr space between a chimney and a flexible metal flue liner?
Does not need to be sealed
Must be sealed at the top only
Must be sealed at the top only
Must be sealed at the top and bottom
A gas fire and back boiler is to be installed into an existing brick built chimney, what height chimney would need to be lined?
Any length of chimney must be lined
6m
10m
12m
The catchment space in the unlined brick chimney, which was previously used for an oil boiler and is now intended to serve a gas fire, must have a minimum
2 dm3
12 dm3
75 dm3
250 dm3
1. Passive stack ventilation systems may cause what problem with open chimney, natural draught appliances?
Excessive ventilation
Noisy burner operation
Pilot operation
Spillage of products of combustion
