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WorksheetsHot Water L2 6035
Total questions: 43
Worksheet time: 22mins
What valve should be installed on the outlet of a cold water cistern
What is this tool used for?
Installing an Immersion heater
Cutting holes in plastic cisterns
Fitting taps
Fitting float valves
The regulations that cover Hot water systems are?
The Water Regulations 1999 and Building regulation part H
The Water Regulations 1999 and Building regulation part G
The Water Regulations 1999 and Building regulation part P
The Water Regulations 1999 and Building regulation part B
This picture shows?
A direct cylinder
An Indirect cylinder
A combination Cylinder
A prismatic cylinder
The purpose of this valve is to?
Control the water flow to the cylinder
Prevent hot and cold water mixing in the pipe work
Mix hot and cold water to prevent scalding
Prevent the water in the cylinder from reaching above 65 dc
What is the max temperature of water on a bath in a new build home?
43
60
48
38
An electric shower is a form of?
Direct single point hot water
Indirect single point hot water
Indirect multi point hot water
Direct multi point hot water
This picture shows?
A unvented cylinder
A thermal store
A Direct cylinder
A Indirect cylinder
A hot water cylinder connected to the main water supply is know as a?
Unvented cylinder
Indirect cylinder
Direct cylinder
Boiler
What British standard covers Hot water installation?
BS6700
BS1212 part 2
BSEN806
BSEN6700
The minimum size of storage cistern for a system supplying cold and hot water is?
115 litres
230 litres
80 litres
180 litres
The minimum size of vent pipe is?
15mm
28mm
22mm
The same size as the cold feed pipe
Too prevent one pipe circulation the vent pipe must step across by how many mm.
150mm
300mm
450mm
600mm
What must be fitted to all new immersion heater thermostats?
A thermal cut out
A warning light
A thermostat set to 50
A 13amp plug
What are the disadvantages of a direct cylinder?
Risk of rusty water
Risk of scale build up
Lack of temperature control
Expensive to install
Two cisterns in loft area
Lack of pressure
Lack of CW storage
Pumped showers cannot be fitted
Cheap to install
Suited for flats/chalets
Easy to install
Compliant with part L
This picture shows a?
Immersion heater
Surry flange
Essex flange
Cylinder thermostat
Building regulation part L states that all pipe work within what distance of the cylinder needs to be lagged?
2m
1.5m
1m
450mm
The thermostats on a hot water cylinder should be set at?
48 to 55 degrees C
43 to 70 degrees C
48 to 60 degrees C
60 to 65 degrees C
What should be fitted to all cold water cisterns?
A float operated valve to BS1212 part 1
A float operated valve to BS1212 part 2
A overflow warning light
A float operated valve to BSEN806 part 2
Building regulation part L states that a cylinder must heat in how many minutes?
30
25
60
35
What material must not be used on hot water systems?
Push fit plastic
Lead free solder
Lead solder
Soldering lead free fittings
Which British standard covers hot water systems?
BSEN6700
BSEN806
BSEN608
BSEN7600
What is this tool used for?
Checking flow rate of water
Checking the pressure of water
Checking the PH of water
Checking the temperature of the hot water
What could be used to overcome a dead leg in a hot water system?
Insulation
Secondary return
Inverted loop system
One pipe system
Where are you required to fit insulation to a hot water pipe?
Within 1m of a cylinder
In a loft space
Under a vented ground floor
All of the above
The picture shows a?
Indirect cylinder
Direct cylinder
Unvented cylinder
Single feed cylinder
What type of water system is shown?
Indirect hot water cylinder
Single feed hot water
Solar hot water
Instantaneous hot water
What is this fitting used for?
Adding a connection to a hot water cylinder
A connection to a cold water system
A connection to a hot water tap
A new connection to a cold water main
This picture shows
A shower pump
A single impeller pump
A double impeller pump.
A negative head pump
Which regulation covers hot water installations
Building Regulations Approved Document G3 2010
Building Regulation Approved Document A 2010
Building Regulation Approved Document H 2010
CIBSE Central Heating Design Guide
What are the factors that affect hot water systems?
Customer needs/occupancy and purpose
Building layout and features
Energy efficiency
Environmental impact
Electrical requirements
If manufacturers' instructions are unavailable, where can we obtain or source a copy from?
Manufacturers' website
Library
Next door neighbour
Plumbers merchant
What is the maximum length of dead leg for a 15mm or 22mm pipe before a secondary return system has to be installed?
5m
8m
10m
12m
What is meant by the term 'centralised systems' ?
Hot water is delivered by single point units at each appliance.
Hot water is delivered to a central point from all hot water outlets in the dwelling.
Hot water is delivered from a central point to all hot water outlets in the dwelling.
Hot water is supplied by a single point water heater.
What is meant by the term open vented system?
Hot water is supplied by a combination boiler.
Hot water is supplied by a multipoint water heater.
Hot water storage system that is fed by a cold water storage cistern in the roof space and contain a vent pipe that is open to the atmosphere.
Hot water storage system that is fed by a mains fed unvented cylinder.
What is the minimum diameter for the flow and return pipework on a gravity circulation system to a open vented hot water cylinder?
15mm
28mm
35mm
22mm
On a direct type open vented hot water cylinder fitted with twin immersion elements, what temperature should the immersion heater thermostats be set to ?
70oC
40oC
55oC
60oC
What is a 'primatic' cylinder?
A single feed, indirect self venting cylinder.
A double feed, indirect cylinder
An unvented cylinder
A galvanised hot water tank.
A cylinder with twin coils has been developed for use with....
Solar thermal or ground source heat pumps.
Combination boilers and multipoint water heaters.
Twin, side entry immersion elements
Pumped showers with thermostatic shower mixer
What is a combination open vented hot water cylinder?
A cylinder with twin coils
A cylinder with its own cold feed cistern incorporated as part of the cylinder.
A single feed, indirect self venting cylinder.
A direct cylinder
Where would we be most likely to use a combination cylinder?
In a large 4 bedroom house
In a two bed bungalow
In a flat
In a maisonette
The maximum head pressure for a grade 1 cylinder is?
3m
25m
15m
10m
How does an unvented hot water system differ from an open vented type?
It contains a coil.
It has an immersion element
It is uninsulated.
It has no open safety vent pipe.
