Worksheetshot water level 2 plumbing
Total questions: 60
Worksheet time: 30mins
The purpose of the fitting is to
Provide a method of releasing high pressure in the system
Isolate the incoming cold water supply pipe from the mains
Isolate the cold supply to the hot water storage cylinder
Prevent the back flow of contaminated water into the mains
The purpose of a double check valve on a mains fed shower is to
Prevent air locks
Reduce outlet pressure
Prevent backflow
Reduce inlet pressure
The safest method of ensuring that a boiler connected to a hot water storage vessel cannot be re-activated during a period of de-commissioning, is to
switch off the supply to the boiler at the fused spur socket outlet, tape the switch and carry on with the work
contact the power supply company to advise that the power is being turned off and isolate the
supply at the consumer unit by removing the fuse
isolate the boiler from the electrical supply by turning off all the power at the mains, disconnect the boiler and tape the wires up
isolate the boiler from the electrical supply at the consumer unit, remove and retain the fuse, and check for safe isolation.
What type of hot water cylinder is this
Indirect double feed
Indirect single feed
Fortic
Primatic single feed
What type of hot water stroage vessel is this
Pressurised unvented
Open vented
Combination type
Hot jacket type
What type of hot water storage cylinder is this
Indirect single feed
Primatic
Combination "Fortic"
Double feed unvented
What type of water heater is classed as a localised water heater
What is this hot water component called
Immersion heater
Immersion spanner
Expansion valve
Immersion beater
The safety device incorporated inside an immersion heater is called
A thermostat
A thermal cut out
A thermometer
A resistor-stat
What is this device called
A TMV Thermostatic mixing valve
A TSV Thermostatic shower valve
A TRV Thermostatic radiator valve
A TCV thermostatic cylinder valve
A pump is required on a secondary circulation system- what should the pump be made from
Cast Iron
Ferrous metal
Any heating pump will do as long as its metal
Bronze
What is the name for the metal strip placed inside a hotwater cylinder to help prevent corrosion
Sacrificial lamb
Corrosion anode
Statistical Anode
Sacrificial anode
At which temperature range does Legionnaire disease thrive
0-15
46-55
60-100
20-46
Which of these is NOT an instantaneous water heater
What should be the length of the horizontal pipe from the open vent on leaving the cylinder
400mm
350mm
450mm
Doesn't matter any size you like
What is the name of pipe number 3 on this indirect double feed cylinder
Primary return
Primary feed
Primary school
Secondary circulation
What is a dead leg
Something Footballers get when tackled
A length of pipe leaving the hot water cylinder carrying hot-water to an appliance
An air lock in the hot water cylinder
The pipe that enters the hot water cylinder
What device is fitted to a cylinder and used to control the temperature of stored hot water to avoid over heating and saving energy
A temperature sensing cartridge can be found in
a shower mixer valve
An electric immersion heater for a hot water storage cylinder
A screened warning pipe assembly for a storage and feed cistern
A pressure reducing valve
Which one of the following provides the legal requirements for the installation of hot water distribution pipework?
Water Regulations.
Construction Regulations.
Building Regulations
British Standard 6700
If hard water is allowed to be heated above 650C, what could be the consequence in the system
Legionella could grow
The blending valve would fail to work
The efficiency could be affected by limescale
The pressure relief valve would open
To prevent the risk of legionella forming in a dead leg, there should be:
No longer than 2.5m, as stated in BS EN 806
Always heated to above 500C
As short as possible
Disinfected annually under a PPM program
Which one of these hot water storage cylinders is a direct one
