WorksheetsWater Regulations and Hot Water Systems Quiz
Total questions: 20
Worksheet time: 10mins
Which of the following cylinder types is a direct cylinder?
A
B
C
State the minimum size of open vent pipe which terminates over a cold water storage cistern that is allowed under the Water Regulations for a secondary domestic hot water system.
15mm
22mm
28mm
32mm
What is the recommended temperature setting for the thermostat to an immersion heater in a hot water storage cylinder?
90ºC
70ºC
60ºC
50ºC
The recommended minimum size of primary circulation pipework between a small (under 35kW) solid fuel boiler serving a direct hot water cylinder only is:
15mm
22mm
28mm
35mm
What is the electrical power rating of a typical domestic immersion heater?
3kW
3.7kW
4kW
10kW
The difference between a single feed and a double feed indirect cylinder is:
The single feed cylinder requires a booster pump
The single feed cylinder does not need a separate feed and expansion cistern
The single feed cylinder requires a twin port motorised valve arrangement
The single feed cylinder does not require an open vent pipe to the secondary storage cistern
The following diagram shows an indirect hot water system. Which section of pipe is missing from the diagram?
Primary cold feed pipe
Primary open vent pipe
Secondary cold feed pipe
Secondary open vent pipe
What type of cylinder is shown below?
Single feed indirect cylinder
Direct cylinder
Combination cylinder
Unvented cylinder
Where should the primary open vent pipe in a double feed indirect hot water system terminate?
Over the cold water storage cistern
Over the feed and expansion cistern
To the outside of the property
In an expansion relief valve
An unvented cylinder has a range of safety controls to prevent hot water reaching which temperature?
85ºC
90ºC
95ºC
100ºC
Which system works in a similar way to an indirect cylinder, except in reverse?
Unvented cylinder
Thermal store unit
Direct cylinder
Combination unit
Name the hot water appliance which is commonly used to provide hot water to a remote basin/sink, which is located too far away from a DHW storage vessel.
Gas or electric single point heater
Smaller DHW storage vessel
Combination cylinder
Secondary circulator
What is the pipe type in position a1?
Primary open vent pipe
Secondary open vent pipe
Primary return pipe
Secondary return pipe
Which pipe is found at position a3?
Secondary open vent pipe
Primary open vent pipe
Primary return pipe
Secondary return pipe
What is the pipe type in position b2?
Secondary cold feed pipe
Primary cold feed pipe
Primary flow pipe
Secondary flow pipe
Identify the pipe type at position c4.
Secondary flow pipe
Primary flow pipe
Primary return pipe
Secondary return pipe
Which pipe is located at position a2?
Primary cold feed pipe
Secondary cold feed pipe
Primary flow pipe
Secondary flow pipe
What is the pipe type in position d3?
Primary return pipe
Secondary return pipe
Primary flow pipe
Secondary flow pipe
Which pipe is found at position a4?
Secondary cold feed pipe
Primary cold feed pipe
Primary flow pipe
Secondary flow pipe
What is the pipe type in position d2?
Secondary flow pipe
Primary flow pipe
Primary cold feed pipe
Secondary cold feed pipe
