WorksheetsCold Water Systems Quiz 2.2-2.3
Total questions: 10
Worksheet time: 5mins
In a direct cold water system, which outlets are supplied directly from the mains?
Only the kitchen cold tap
All cold water outlets in the dwelling
Only bathroom outlets
Only the WC and bath
What is a major disadvantage of a direct cold water system?
Low installation cost
Low risk of contamination
Pressure may drop at peak demand
No need for mains supply
Which dwellings are MOST suited to a direct cold water system?
Large commercial buildings
Very large dwellings with many outlets
Small to medium dwellings with limited outlets
Buildings with poor mains pressure
In an indirect cold water system, which appliance is typically supplied directly from the mains?
Bath
Washbasin
Shower
Kitchen sink
Why is the cold water cistern in an indirect system installed as high as possible?
To minimise noise
To increase system pressure
To reduce condensation
To prevent overflows
What is a key advantage of an indirect cold water system?
Lower installation cost
Reduced demand on the cold water main at peak times
Requires fewer pipes
Better mains pressure at all outlets
What is the MINIMUM pipe size recommended for a rising main supplying an unvented hot water system?
10mm
15mm
22mm
28mm
In a basic direct system with a combi boiler and no en-suite, what pipe size is typically used for the rising main?
10mm
15mm
22mm
28mm
What must the cold water storage cistern capacity equal when feeding an open-vented hot water system?
Half the hot water storage capacity
Double the hot water storage capacity
At least the hot water storage vessel capacity
No storage is needed
Which system provides stored water for use if the mains supply fails?
Direct system
Indirect system
Unvented system
Combination boiler system
