WorksheetsPPT2 Hot water systems
Total questions: 16
Worksheet time: 8mins
How is the secondary water heated in a double-feed hot water cylinder
Via a secondary boiler
convection
conduction
Immersion heater
The Building Regulations insist that there is adequate control of the hot water system to prevent the water reaching
60 degrees
100 degrees
55 degrees
82 degrees
What is the main focus of the unit mentioned in the document?
Single-feed cylinders
Double-feed cylinders
Direct systems
Closed systems
The heated water in the cylinder should be stored at
50-55 degrees
100 degrees
60-65 degrees
45-50 degrees
What is the primary water source in a double-feed indirect hot water storage system?
Rainwater
Water from a boiler
Groundwater
River water
What is the connection type for the primary return in the system?
2" female thread
1" male thread
3" male thread
1" female thread
What is the primary purpose of the double-feed indirect hot water storage system?
To store cold water
To heat water efficiently
To purify water
To cool water
What is the diameter of the vent from the primary hot water system connected to the boiler?
15mm
22mm
28mm
40mm
What is the diameter of the cold feed to the primary system?
15mm
22mm
28mm
40mm
What is the height of the vent from the primary hot water system?
100mm
150mm
200mm
250mm
What do the Building Regulations now require for primary circuits in heating systems?
Fitted with a pump
Use of gravity circulation
Use of solar panels
Installation of larger pipes
What is the general storage capacity for an indirect double feed hot water system for four people?
150 litres
210 litres
300 litres
100 litres
Which fuel types can be used with an indirect double feed hot water system?
Only gas
Only oil
Gas, oil, solid fuel, electricity, and renewable energy
Only electricity
Which of the following is a disadvantage of the indirect double feed hot water system?
Wide range of capacities available
Fully compliant with Document L
Expensive to install
Can be used with condensing boilers
Which of the following is a compliance feature of the indirect double feed hot water system?
Compliant with Document A
Compliant with Document B
Compliant with Document L
Compliant with Document M
The primary and secondary waters in a double-feed cylinder are kept separate by use of
A separate tank inside the cylinder
A copper coil within the cylinder
A motorized valve
A plastic coil within the cylinder
