Year:
Duration: 3 hours
1 Commission a cold- and hot-water
system
Plumbing systems commissioning
Learning outcomes
The learner will be able to:
•
check installation prior to testing and confirm that it is in accordance with
industry requirements
•
commission a boosted shower installation:
•
–
soundness test to Water Regulation requirements
–
performance test for correct pressure and flow
demonstrate customer hand-over procedures.
Tutor activity
Learner activity
• Demonstrate performance testing
procedures on hot and cold supplies.
• Observe the demonstration, take
mental or written notes, ask
questions.
• Supervise learner undertaking
commissioning procedures.
• Check a boosted shower installation
to establish whether it is installed inline with industry requirements.
• Carry out soundness testing of the
installation prior to commissioning.
• Performance test the installation and
make any necessary controls
adjustments.
• Hand-over the commissioned system
to the customer (tutor).
• Identify faults in pre-installed
systems.
• Practise until fully prepared for
assessment.
Resources
•
Hand tools
•
Manufacturers’ installation instructions – shower and pump
•
Hydraulic and performance test equipment
•
Electrical connections to the system must be already made and the appliance
operational (no electrical testing required)
•
Faulted installation or photographs of faulted installations
Plumbing: NVQ and Technical Certificate Level 3 Tutor Resource Disk
1 of 32
Evaluation
Evaluated by 6129 Scheme practical task:
•
COM-2 Boosted shower.
<Author query: I presume these references throughout the Practicals
are to tests etc from outside sources and not material provided on
the CD. (If my assumption is wrong, you will need to let me know and
will need to provide the correct cross reference.)>
Plumbing: NVQ and Technical Certificate Level 3 Tutor Resource Disk
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Year:
Duration: 3 hours
2 Commission a macerator WC
Plumbing systems commissioning
Learning outcomes
The learner will be able to:
•
check installation prior to testing and confirm that it is in accordance with
industry requirements
•
commission a macerator WC installation:
–
•
performance test for removal of contents from WC pan
demonstrate customer hand-over procedures.
Tutor activity
Learner activity
• Demonstrate appliance performance
testing procedures.
• Observe the demonstration, take
mental or written notes, ask
questions.
• Supervise learner undertaking
commissioning procedures.
• Check a macerator WC installation to
establish whether it is installed in-line
with industry requirements.
• Performance test the installation and
confirm that it is working in-line with
manufacturer requirements.
• Hand-over the commissioned system
to the customer (tutor).
• Identify faults in pre-installed
systems.
• Practise until fully prepared for
assessment.
Resources
•
Hand tools
•
Manufacturers’ installation instructions – macerator WC
•
Electrical connections to the system must already be made and the appliance
operational (no electrical testing required)
•
Faulted installation or photographs of faulted installations
Evaluation
Evaluated by 6129 Scheme practical task:
•
COM-3 Macerator type WC.
Plumbing: NVQ and Technical Certificate Level 3 Tutor Resource Disk
3 of 32
Year:
Duration: 3 hours
3 Commission an above ground
sanitary pipework system
Plumbing systems commissioning
Learning outcomes
The learner will be able to:
•
check installation prior to testing and confirm that it is in accordance with
industry requirements
•
commission an above ground discharge system:
–
setting appliance water levels
–
soundness test to BS requirements
–
performance test for trap seal loss
–
performance test for removal of contents from WC pan.
Tutor activity
Learner activity
• Demonstrate system performance
testing procedures.
• Observe the demonstration, take
mental or written notes, ask
questions.
• Supervise learner undertaking
commissioning procedures.
• Check an above ground sanitation
system to confirm whether it is
installed in-line with industry
requirements.
• Carry out soundness testing of the
installation prior to commissioning.
• Performance test the installation and
make any necessary controls
adjustments.
• Hand-over the commissioned system
to the customer (tutor).
• Identify faults in pre-installed
systems.
• Practise until fully prepared for
assessment.
Resources
•
Hand tools
•
Air testing equipment and performance testing kit
•
British Standards
•
Operational above ground system comprising of bath, WC and basin
•
Faulted installation or photographs of faulted installations
Plumbing: NVQ and Technical Certificate Level 3 Tutor Resource Disk
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Evaluation
Evaluated by 6129 Scheme practical task:
•
COM-1 Above ground sanitation system.
Plumbing: NVQ and Technical Certificate Level 3 Tutor Resource Disk
5 of 32
Year:
Duration: 5 hours
1 Install, commission and
decommission
Unvented hot-water systems
Learning outcomes
The learner will be able to:
•
carry out the installation, commissioning and decommissioning of unvented
hot water systems.
Tutor activity
Learner activity
• Demonstrate the function/malfunction
and positioning of unvented control
components using demonstration rig.
• Observe the demonstration, take
mental or written notes, ask
questions.
• Supervise learner undertaking
activities.
• Carry out the installation of an
unvented cylinder including discharge
pipework (preferred).
• Undertake the precommissioning
inspection of a system.
• Commission and performance test an
unvented hot water storage system.
• Decommission an unvented hot water
storage system.
• Practise until fully prepared for
assessment.
Resources
•
Hand tools
•
Performance testing equipment
•
Manufacturers’ instructions
•
An unvented system to install (not essential) or alternatively undertake work
on a pre-installed system
•
Unvented demonstration rig (e.g. Heatrae Sadia)
Evaluation
Evaluated by 6129 Scheme practical tasks:
•
GCHUV 1 to 5 Gas central heating and unvented systems installation
•
UV-3 Unvented system – decommissioning
Plumbing: NVQ and Technical Certificate Level 3 Tutor Resource Disk
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Year:
Duration: 3 hours
2 Service and diagnose faults
Unvented hot-water systems
Learning outcomes
The learner will be able to:
•
carry out a service procedure on an unvented hot water storage system
including the diagnosis and rectification of faults.
Tutor activity
Learner activity
• Demonstrate the:
• Observe the demonstration, take
mental or written notes, ask
questions.
– pre-service checks and testing
procedure to be carried out on
unvented hot water systems
– service procedure on an unvented
system
– fault diagnosis procedures for a
range of common unvented faults.
• Supervise learner undertaking
activities.
• Carry out the pre-service checks and
tests on an unvented system, which
should incorporate installation defects
(or use photographs of defective
installations during process).
• Carry out a correct service procedure
to manufacturers’ instructions on an
unvented system.
• Diagnose and rectify at least two
faults on a pre-installed system.
• Practise until fully prepared for
assessment.
Resources
•
Hand tools
•
Performance testing equipment
•
Manufacturers’ instructions
•
An unvented system with installation faults or use of photographs and an
installation with component faults (changed between learners)
Evaluation
Evaluated by 6129 Scheme practical tasks:
•
UV-1 Unvented system – service procedure
•
UV-2 Unvented system – fault diagnostics.
Plumbing: NVQ and Technical Certificate Level 3 Tutor Resource Disk
7 of 32
Year:
Duration: 4 hours
1 Tightness testing gas supply
pipework
Gas safety
Learning outcomes
The learner will be able to:
•
carry out initial inspection of a gas pipework system prior to tightness testing
•
undertake tightness testing of a system in:
–
new properties
–
existing properties
•
identify whether systems are acceptable to put into service following
tightness testing
•
make recommendation on remedial actions where deficiencies in pipework
system installations are identified.
Tutor activity
Learner activity
• Demonstrate the following:
• Observe the demonstration, take
mental or written notes, ask
questions.
– pre-tightness testing checks on
system pipework
– tightness testing procedures on
new and existing gas pipework
systems.
• Supervise learner gas tightness
testing practice on pre-installed
systems.
• Carry out pre-testing inspection of
gas pipework system.
• Undertake tightness testing
procedures on new and existing
installations.
• Make recommendation on whether
the installation may be put into
service.
• Identify deficiencies in gas pipework
systems including leaks and
undertake remedial action.
• Practise until fully prepared for
assessment.
Resources
•
Hand tools and gas testing equipment
•
Resource materials, Plumbing NVQ and Technical Certificate Level 3,
British Standards, CORGI Manual and appliance manufacturers’ instructions
•
A completed installation comprising meter and two or more gas appliances
and (preferably) a faulted installation or alternatively photographs of faulted
installations
Plumbing: NVQ and Technical Certificate Level 3 Tutor Resource Disk
8 of 32
Evaluation
Evaluated by:
•
gas appliance assessments.
Plumbing: NVQ and Technical Certificate Level 3 Tutor Resource Disk
9 of 32
Year:
Duration: 2 hours
2 Purging domestic gas supplies
Gas safety
Learning outcomes
The learner will be able to:
•
carry out a purge procedure to a gas pipework system to BS requirements.
Tutor activity
Learner activity
• Demonstrate the safe gas purging
procedure to a gas pipework system.
• Observe the demonstration, take
mental or written notes, ask
questions.
• Supervise learner carrying out purge
procedures on a pre-installed system.
• Carry out the purge procedure in a
safe manner to BS requirements.
• Confirm that the purge procedure has
been successfully completed.
• Identify any remedial action
necessary.
• Practise until fully prepared for
assessment.
Resources
•
Hand tools and gas testing equipment
•
Resource materials, Plumbing NVQ and Technical Certificate Level 3,
British Standards, CORGI Manual and appliance manufacturers’ instructions
•
A completed installation comprising a meter and two or more gas appliances
Evaluation
Evaluated by:
•
gas appliance assessments.
Plumbing: NVQ and Technical Certificate Level 3 Tutor Resource Disk
10 of 32
Year:
Duration: 3 hours
3 Checking and adjusting gas
pressures
Gas safety
Learning outcomes
The learner will be able to:
•
adjust gas pressures at range rated appliances
•
check gas pressures at fixed rated appliances
•
check standing and working pressure at gas meter and working pressures at
appliances to confirm correct gas pipe size
•
confirm appliance gas rates.
Tutor activity
Learner activity
• Demonstrate the correct procedure
for:
• Observe the demonstration, take
mental or written notes, ask
questions.
– confirming pressures at gas meter
with appliances operating/not
operating
• Carry out pressure tests at meter and
appliances.
– checking gas pressures at fixed
rated appliances
• Confirm readings against BS and
manufacturers’ requirements.
– checking and adjusting gas
pressures at range rated appliances
• Confirm the gas consumption rate of
appliances.
– checking gas readings taken across
the system against the BS and
manufacturers’ requirements
• Confirm whether installation is
acceptable to be put into service.
– confirm the gas consumption rate
of appliances.
• Practise until fully prepared for
assessment.
• Supervise learner carrying out purge
procedures on a pre-installed system.
Resources
•
Hand tools and gas testing equipment
•
Resource materials, Plumbing NVQ and Technical Certificate Level 3,
British Standards, CORGI Manual and appliance manufacturers’ instructions
•
A completed installation comprising a meter and two or more appliances
(boiler and cooker or fire) – preferably faulted installation with under-sized
pipework section
Plumbing: NVQ and Technical Certificate Level 3 Tutor Resource Disk
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Evaluation
Evaluated by:
•
gas appliance assessments.
Plumbing: NVQ and Technical Certificate Level 3 Tutor Resource Disk
12 of 32
Year:
Duration: 3 hours
4 Checking ventilation requirements
Gas safety
Learning outcomes
The learner will be able to:
•
identify the correct type of ventilators to be used with:
–
permanent ventilation to open-flued boilers
–
ventilation to boiler compartments
•
confirm that ventilators provided with a particular appliance meet BS
requirements
•
identify a range of ventilation faults.
Tutor activity
Learner activity
• Identify the ventilation requirements
for a range of appliance requirements
including permanent ventilation to
open flues and boiler compartments.
• Observe the demonstration, take
mental or written notes, ask
questions.
• Demonstrate the procedures for
checking air vents to comply with BS
requirements.
• Set the learner a range of tasks to
identify ventilation requirements and
confirm that ventilators are fit for
purpose.
• Supervise learner activities.
• Identify the appliance ventilation
requirements for a given installation.
• Determine whether ventilator(s)
provided by the tutor are fit for
purpose.
• Identify from existing installations a
range of ventilation faults.
• Practise until fully prepared for
assessment.
Resources
•
Hand tools
•
Resource materials, Plumbing NVQ and Technical Certificate Level 3,
British Standards, CORGI Manual and appliance manufacturers’ instructions
•
A range of ventilators (including incorrect type of ventilator) and appliance
instructions used in a tutor-led exercise to determine whether the ventilation
provision is suitable for the appliance installation
Evaluation
Evaluated by:
•
gas appliance assessments.
Plumbing: NVQ and Technical Certificate Level 3 Tutor Resource Disk
13 of 32
Year:
Duration: 4 hours
5 Installing open-flued pipes
Gas safety
Learning outcomes
The learner will be able to:
•
confirm that a given installation is suitable for an open-flue installation
•
determine appropriate open-flue materials for a given installation
•
demonstrate correct open-flue bracketing methods
•
assemble and joint open-flue materials.
Tutor activity
Learner activity
• Demonstrate the key procedures for
checking that an installation location
and appliance will be able to be
served by an open flue.
• Observe the demonstration, take
mental or written notes, ask
questions.
• Identify the processes for establishing
the required flue for a particular
installation.
• Determine the suitability of an open
flue for a given installation location.
• Identify the correct flue materials and
components for an open-flue system.
• Demonstrate assembly and jointing of
open-flue system components.
• Measure, mark out and fix open-flue
brackets.
• Supervise learner activities.
• Assemble and joint open-flue pipe
and fittings.
• Identify faults on defective open-flue
systems.
• Practise until fully prepared for
assessment.
Resources
•
Hand tools
•
Resource materials, Plumbing NVQ and Technical Certificate Level 3,
British Standards, CORGI Manual and appliance manufacturers’ instructions
•
Predetermined tutor-developed exercise (workshop) specifying appliance and
flue locations
•
Location for marking out and fixing brackets
•
Flue pipe materials to permit jointing to take place
•
Predeveloped exercise using faulted installation or photographs to permit
learner to identify faults on systems
Evaluation
Evaluated by:
•
gas appliance assessments.
Plumbing: NVQ and Technical Certificate Level 3 Tutor Resource Disk
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Year:
Duration: 3 hours
6 Installing room-sealed flues
Gas safety
Learning outcomes
The learner will be able to:
•
confirm that a given installation is suitable for a room-sealed flue installation
•
determine an appropriate room-sealed flue kit for a given installation
•
assemble and joint room-sealed flue kits.
Tutor activity
Learner activity
• Demonstrate the key procedures for
checking that an installation location
and appliance will be able to be
served by an room-sealed flue.
• Observe the demonstration, take
mental or written notes, ask
questions.
• Identify the processes for establishing
the required flue for a particular
installation.
• Demonstrate assembly and jointing of
room-sealed flue system
components.
• Supervise learner activities.
• Determine the suitability of a roomsealed flue for a given installation
location.
• Identify the correct flue kit for a
given appliance and installation
location.
• Assemble and joint a room-sealed
flue kit.
• Identify faults on defective roomsealed flue kits.
• Practise until fully prepared for
assessment.
Resources
•
Hand tools
•
Resource materials, Plumbing NVQ and Technical Certificate Level 3,
British Standards, CORGI Manual and appliance manufacturers’ instructions
•
Predetermined tutor-developed exercise (workshop) specifying appliance and
flue locations
•
Room-sealed flue kit to permit jointing to take place
•
Predeveloped exercise using faulted installation or photographs to permit
learner to identify faults on systems
Evaluation
Evaluated by:
•
gas appliance assessments.
Plumbing: NVQ and Technical Certificate Level 3 Tutor Resource Disk
15 of 32
Year:
Duration: 4 hours
7 Inspection and testing flue systems
Gas safety
Learning outcomes
The learner will be able to:
•
carry out the pre-testing inspection of open- and room-sealed flues
•
test open- and room-sealed flues for correct performance.
Tutor activity
Learner activity
• Demonstrate the:
• Observe the demonstration, take
mental or written notes, ask
questions.
– pre-inspection procedures to be
completed on an open- and roomsealed flue prior to testing
• flue testing procedure for openand room-sealed flues.
• Supervise learner activities.
• Carry out the pre-inspection checks
on open- and room-sealed flues
(preferably including faulted
installations or photographs).
• Test an open- and room-sealed flue.
• Confirm that flue systems are safe to
use (or not).
• Practise until fully prepared for
assessment.
Resources
•
Hand tools
•
Flue testing equipment
•
Resource materials, Plumbing NVQ and Technical Certificate Level 3,
British Standards, CORGI Manual and appliance manufacturers’ instructions
•
Operating open- and room-sealed flues (preferably including faults or
photographs)
Evaluation
Evaluated by:
•
gas appliance assessments.
Plumbing: NVQ and Technical Certificate Level 3 Tutor Resource Disk
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Year:
Duration: 3 hours
8 Dealing with unsafe situations
Gas safety
Learning outcomes
The learner will be able to:
•
apply the correct procedures for dealing with a range of unsafe gas
situations.
This session may be merged with the previous pipework testing
and flue testing sessions
<Author query: Do you want to be specific and give actual
references to sessions you are referring to (ie, 7 Inspecting and
testing flue systems)? It would make it very simple for someone
unfamiliar with the structure to find exactly what you are
referring to>
Tutor activity
Learner activity
• Demonstrate the correct procedure
for dealing with systems and
appliances:
• Observe the demonstration, take
mental or written notes, ask
questions.
– immediately dangerous
– at risk
– not to standard.
• Identify the typical points to be
included on any report forms/warning
labels.
• Supervise learner activities.
• Identify and classify a variety of
unsafe gas situations (preferred
practical exercise but may be
undertaken using photographs).
• Demonstrate the procedures to be
taken to make the appliance safe
including the completion of any report
forms or warning labels.
• Practise until fully prepared for
assessment.
Resources
•
Hand tools
•
Gas pipework and flue testing equipment
•
Resource materials, Plumbing NVQ and Technical Certificate Level 3,
British Standards, CORGI Manual and appliance manufacturers’ instructions
•
Preferred live faulted installations or photographs
Plumbing: NVQ and Technical Certificate Level 3 Tutor Resource Disk
17 of 32
Evaluation
Evaluated by:
•
gas appliance assessments.
Plumbing: NVQ and Technical Certificate Level 3 Tutor Resource Disk
18 of 32
Year:
Duration: 4 hours
1 Install, commission and
decommission gas cookers
Gas appliances
Learning outcomes
The learner will be able to:
•
carry out the installation, commissioning and decommissioning of domestic
gas cookers.
Tutor activity
Learner activity
• Demonstrate the key installation
features on an existing gas cooker
installation.
• Observe the demonstration, take
mental or written notes, ask
questions.
• Demonstrate the correct appliance
commissioning and decommissioning
procedures.
• Carry out the installation of a
domestic gas cooker.
• Supervise learner undertaking
activities.
• Undertake the precommissioning
inspection of a gas cooker.
• Commission and performance test a
gas cooker.
• Decommission a gas cooker.
• Practise until fully prepared for
assessment.
Resources
•
Hand tools
•
Gas test equipment
•
Resource materials, Plumbing NVQ and Technical Certificate Level 3,
British Standards, CORGI Manual and appliance manufacturers’ instructions
•
A suitable installation location with pre-installed gas supply – learner to make
final connections and install appliance
Evaluation
Evaluated by 6129 Scheme practical tasks:
•
GAI-2 Gas cooker installation
•
GAD-4 Gas cooker – decommissioning.
Plumbing: NVQ and Technical Certificate Level 3 Tutor Resource Disk
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Year:
Duration: 3 hours
2 Service and diagnose faults on gas
cookers
Gas appliances
Learning outcomes
The learner will be able to:
•
carry out a service procedure on a domestic gas cooker including the
diagnosis and rectification of faults.
Tutor activity
Learner activity
• Demonstrate the:
• Observe the demonstration, take
mental or written notes, ask
questions.
– pre-service checks and testing
procedure to be carried out on
domestic gas cookers
– service procedure on a gas cooker
– fault diagnosis procedures for a
range of common cooker faults.
• Supervise learner undertaking
activities.
• Carry out the pre-service checks and
tests on gas cookers, which should
incorporate installation defects (or
use photographs of defective
installations during process).
• Carry out a correct service procedure
to manufacturers’ instructions on a
gas cooker.
• Diagnose and rectify at least two
faults on a pre-installed gas cooker.
• Practise until fully prepared for
assessment.
Resources
•
Hand tools
•
Gas testing equipment
•
Resource materials, Plumbing NVQ and Technical Certificate Level 3,
British Standards, CORGI Manual and appliance manufacturers’ instructions
•
A gas cooker with installation faults or use photographs and an installation
with component faults (changed between learners)
Evaluation
Evaluated by 6129 Scheme practical tasks:
•
GASM-4 Gas cooker – service procedure
•
GAFD-4 Gas cooker – fault diagnostics.
Plumbing: NVQ and Technical Certificate Level 3 Tutor Resource Disk
20 of 32
Year:
Duration: 4 hours
3 Install, commission and
decommission gas fires
Gas appliances
Learning outcomes
The learner will be able to:
•
carry out the installation, commissioning and decommissioning of domestic
gas fires.
Tutor activity
Learner activity
• Demonstrate the key installation
features on an existing gas fire
installation.
• Observe the demonstration, take
mental or written notes, ask
questions.
• Demonstrate the correct appliance
commissioning and decommissioning
procedures.
• Carry out the installation of a
domestic gas fire.
• Supervise learner undertaking
activities.
• Undertake the precommissioning
inspection of a gas fire.
• Commission and performance test a
gas fire.
• Decommission a gas fire.
• Practise until fully prepared for
assessment.
Resources
•
Hand tools
•
Gas test equipment – pipework and flue system
•
Resource materials, Plumbing NVQ and Technical Certificate Level 3,
British Standards, CORGI Manual and appliance manufacturers’ instructions
•
A suitable installation location with pre-installed gas supply – learner to make
final connections and install appliance(s)
Evaluation
Evaluated by 6129 Scheme practical tasks:
•
GAI-1 Gas space heater installation
•
GAD-3 Gas space heater – decommissioning.
Plumbing: NVQ and Technical Certificate Level 3 Tutor Resource Disk
21 of 32
Year:
Duration: 3 hours
4 Service and diagnose faults on gas
fires
Gas appliances
Learning outcomes
The learner will be able to:
•
carry out a service procedure on a domestic gas fire including the diagnosis
and rectification of faults.
Tutor activity
Learner activity
• Demonstrate the:
• Observe the demonstration, take
mental or written notes, ask
questions.
– pre-service checks and testing
procedure to be carried out on
domestic gas fires
– service procedure on a gas fire
– fault diagnosis procedures for a
range of common gas fire faults.
• Supervise learner undertaking
activities.
• Carry out the pre-service checks and
tests on gas fires, which should
incorporate installation defects (or
use photographs of defective
installations during process).
• Carry out a correct service procedure
to manufacturers’ instructions on a
gas fire.
• Diagnose and rectify at least two
faults on a pre-installed gas fire.
• Practise until fully prepared for
assessment.
Resources
•
Hand tools
•
Gas testing equipment – pipework and flue testing
•
Resource materials, Plumbing NVQ and Technical Certificate Level 3,
British Standards, CORGI Manual and appliance manufacturers’ instructions
•
A gas fire with installation faults or use of photographs and an installation
with component faults (changed between learners)
Evaluation
Evaluated by 6129 Scheme practical tasks:
•
GASM-3 Gas space heater – service procedure
•
GAFD-3 Gas space heater – fault diagnostics.
Plumbing: NVQ and Technical Certificate Level 3 Tutor Resource Disk
22 of 32
Year:
Duration: 3 hours
5 Commission and decommission gas
water heaters
Gas appliances
Learning outcomes
The learner will be able to:
•
carry out the commissioning and decommissioning of domestic gas water
heaters.
Tutor activity
Learner activity
• Demonstrate the correct appliance
commissioning and decommissioning
procedures – including the necessary
precommissioning checks and tests.
• Observe the demonstration, take
mental or written notes, ask
questions.
• Supervise learner undertaking
activities.
• Undertake the precommissioning
inspection of a gas water heater.
• Commission and performance test a
gas water heater.
• Decommission a gas water heater.
• Practise until fully prepared for
assessment.
Resources
•
Hand tools
•
Gas test equipment – pipework and flue system
•
Water performance test equipment – pressure and flow
•
Resource materials, Plumbing NVQ and Technical Certificate Level 3,
British Standards, CORGI Manual and appliance manufacturers’ instructions
•
A suitable pre-installed gas water heater
Evaluation
Evaluated by 6129 Scheme practical task:
•
GAD-2 Gas water heater – decommissioning.
Plumbing: NVQ and Technical Certificate Level 3 Tutor Resource Disk
23 of 32
Year:
Duration: 3 hours
6 Service and diagnose faults on gas
water heaters
Gas appliances
Learning outcomes
The learner will be able to:
•
carry out a service procedure on a domestic gas water heater including the
diagnosis and rectification of faults.
Tutor activity
Learner activity
• Demonstrate the:
• Observe the demonstration, take
mental or written notes, ask
questions.
– pre-service checks and testing
procedure to be carried out on
domestic gas water heaters
– service procedure on a gas water
heater
– fault diagnosis procedures for a
range of common gas water heater
faults.
• Supervise learner undertaking
activities.
• Carry out the pre-service checks and
tests on gas water heaters, which
should incorporate installation defects
(or use photographs of defective
installations during process).
• Carry out a correct service procedure
to manufacturers’ instructions on a
gas water heater.
• Diagnose and rectify at least two
faults on a pre-installed gas water
heater.
• Practise until fully prepared for
assessment.
Resources
•
Hand tools
•
Gas testing equipment – pipework and flue testing
•
Water performance test equipment – pressure and flow
•
Resource materials, Plumbing NVQ and Technical Certificate Level 3,
British Standards, CORGI Manual and appliance manufacturers’ instructions
•
A gas water heater with installation faults or use of photographs and an
installation with component faults (changed between learners)
Evaluation
Evaluated by 6129 Scheme practical tasks:
•
GASM-2 Gas water heater – service procedure
•
GAFD-2 Gas water heater – fault diagnostics.
Plumbing: NVQ and Technical Certificate Level 3 Tutor Resource Disk
24 of 32
Year:
Duration: 6 hours
7 Install, commission and
decommission gas boilers
Gas appliances
Learning outcomes
The learner will be able to:
•
carry out the installation, commissioning and decommissioning of domestic
gas boilers.
Tutor activity
Learner activity
• Demonstrate the key installation
features for a gas boiler installation:
• Observe the demonstration, take
mental or written notes, ask
questions.
– measuring and marking out for
location
– installation of mounting assembly
• Carry out the installation of a
domestic gas boiler:
– installation of flue assembly/flue
pipe connection
– measure and mark out location
– mounting the appliance
– install flue assembly
– making pipework connections.
– mount the appliance
– install boiler mountings
• Demonstrate the correct appliance
commissioning and decommissioning
procedures.
• Undertake the precommissioning
inspection of a gas boiler.
– make final gas connection.
• Supervise learner undertaking
activities.
• Commission and performance test a
gas boiler.
• Decommission a gas boiler.
• Practise until fully prepared for
assessment.
Resources
•
Hand tools
•
Gas test equipment – pipework and flue system
•
Resource materials, Plumbing NVQ and Technical Certificate Level 3,
British Standards, CORGI Manual and appliance manufacturers’ instructions
•
The installation is preferred to be carried out on one complete appliance,
however, where space does not permit, boiler measuring and marking out
may be undertaken on a fixed-wall surface, boiler assembly and mounting as
bench work, commissioning and decommissioning on a pre-installed
appliance
Evaluation
Evaluated by 6129 Scheme practical tasks:
Plumbing: NVQ and Technical Certificate Level 3 Tutor Resource Disk
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•
GCHUV 1 to 5 Gas central heating and unvented systems installation
•
GAD-1 Gas boilers – decommissioning.
Plumbing: NVQ and Technical Certificate Level 3 Tutor Resource Disk
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Year:
Duration: 5 hours
8 Service and diagnose faults on gas
boilers
Gas appliances
Learning outcomes
The learner will be able to:
•
carry out a service procedure on a domestic gas boiler including the diagnosis
and rectification of faults.
Tutor activity
Learner activity
• Demonstrate the:
• Observe the demonstration, take
mental or written notes, ask
questions.
– pre-service checks and testing
procedure to be carried out on
domestic gas boilers
– service procedure on a gas boiler
– fault diagnosis procedures for a
range of common gas boiler faults.
• Supervise learner undertaking
activities.
• Carry out the pre-service checks and
tests on gas boilers, which should
incorporate installation defects (or
use photographs of defective
installations during process).
• Carry out a correct service procedure
to manufacturers’ instructions on a
gas boiler.
• Diagnose and rectify at least two
faults on a pre-installed gas boiler.
• Practise until fully prepared for
assessment.
Resources
•
Hand tools
•
Gas testing equipment – pipework and flue testing
•
Electrical test equipment
•
Resource materials, Plumbing NVQ and Technical Certificate Level 3,
British Standards, CORGI Manual and appliance manufacturers’ instructions
•
A gas boiler with installation faults or use photographs and an installation
with component faults (changed between learners)
•
Non-live electrical testing must be undertaken wherever possible
Evaluation
Evaluated by 6129 Scheme practical tasks:
•
GASM-1 Gas boilers – service procedure
•
GAFD-1 Gas boilers – fault diagnostics.
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Year:
Duration: 6 hours
1 Install controls and feed and vent
equipment
Central-heating systems
Learning outcomes
The learner will be able to:
•
install typical fully pumped central-heating controls and domestic sealedsystem feed and vent apparatus.
Tutor activity
Learner activity
• Demonstrate the correct positioning
of control and feed and vent
components in systems using a
working system.
• Observe the demonstration, take
mental or written notes, ask
questions.
• Demonstrate correct control
operation on a domestic system.
• Manually operate pre-installed control
systems to confirm operating
functions.
• Supervise learner undertaking
activities.
• Practise until fully prepared for
assessment.
Resources
•
Hand tools
•
Manufacturers’ instructions
•
Working sealed central-heating system and preferably controls
demonstrations boards
Evaluation
Evaluated by 6129 Scheme practical task:
•
GCHUV 1 to 5 Gas central heating and unvented systems installation.
Plumbing: NVQ and Technical Certificate Level 3 Tutor Resource Disk
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Year:
Duration: 8.5 hours
2 Wiring control systems
Central-heating systems
Learning outcomes
The learner will be able to:
•
wire fully pumped central-heating systems (non-smartfit type).
Tutor activity
Learner activity
• Demonstrate correct cable and flex
termination procedures.
• Observe the demonstration, take
mental or written notes, ask
questions.
• Identify wiring system components
and fixing techniques – trunking,
junction boxes etc.
• Demonstrate how to interpret the
wiring requirements for individual
components – cable size and type
(number of cores).
• Supervise learner undertaking
activities.
• Show that correct cable and flex
terminations can be made.
• Fit a section of mini trunking.
• Fix a section of cable and flex.
• Wire a fully pumped heating system,
either:
– 2 x 2 port valve type
– mid position valve type.
• Practise until fully prepared for
assessment.
Resources
•
Hand tools
•
Electrical test equipment
•
Resource materials, Plumbing NVQ and Technical Certificate Level 3,
manufacturers’ instructions
•
Wiring of a controls rig preferred, any confirmation of correct conductors,
polarity etc. must be on a non-live basis
•
Controls not to be put into operation until testing has been completed
•
Connection to controls rig by 13 amp plug
Evaluation
Evaluated by 6129 Scheme practical task:
•
GCHUV 1 to 5 Gas central heating and unvented systems installation.
Plumbing: NVQ and Technical Certificate Level 3 Tutor Resource Disk
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Year:
Duration: 5 hours
3 Electrical testing of control systems
Central-heating systems
Learning outcomes
The learner will be able to:
•
check and test electrical control systems.
Tutor activity
Learner activity
• Demonstrate the pre-testing checks
to be carried out on the control
system.
• Observe the demonstration, take
mental or written notes, ask
questions.
• Demonstrate the range of electrical
checks and tests to be carried out to
BS 7671 requirements.
• Visually inspect an existing control
system installation to establish
whether it has been installed
correctly.
• Supervise learner undertaking
activities.
• Carry out electrical safety checks and
tests on control systems (at least one
fault to be built into process).
• Confirm that the system operates
correctly and is safe to use.
• Practise until fully prepared for
assessment.
Resources
•
Hand tools
•
Electrical test equipment
•
Resource materials, Plumbing NVQ and Technical Certificate Level 3,
manufacturers’ instructions
•
Testing preferably carried out on a controls rig conductors, non-live testing of
system required
•
Controls not to be put into operation until testing has been completed
•
Connection to controls rig by 13 amp plug
Evaluation
Evaluated by 6129 Scheme practical task:
•
GCHUV 1 to 5 Gas central heating and unvented systems installation.
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Year:
Duration: 3 hours
4 Commissioning
Central-heating systems
Learning outcomes
The learner will be able to:
•
commission a sealed gas central-heating system.
Tutor activity
Learner activity
• Demonstrate the range of
precommissioning checks to be
carried out on a central-heating
system to check the installation
against the specification.
• Observe the demonstration, take
mental or written notes, ask
questions.
• Carry out the commissioning
procedure for:
– gas pipework system
– system filling and soundness
testing
– electrical safety checks and controls
operation
• Carry out a visual check on system
prior to commissioning (preferably
including two faults or alternatively
using photographs).
• Commission the installation for:
– gas pipework system
– system filling and soundness
testing
– gas boiler operation
– electrical safety checks and controls
operation
– flue performance
– gas boiler operation
– thermostatic controls operation
– flue performance
– system balancing.
– thermostatic controls operation
• Supervise learner undertaking
activities.
– system balancing.
• Practise until fully prepared for
assessment.
Resources
•
Hand tools
•
Gas test equipment – pipework and flue testing
•
Electrical test equipment
•
Digital thermometer
•
Manufacturers’ instructions
•
Commissioning carried out on a pre-installed system incorporating faults or
alternatively using photographs
Evaluation
Evaluated by 6129 Scheme practical task:
•
GCHUV 1 to 5 Gas central heating and unvented systems installation.
Plumbing: NVQ and Technical Certificate Level 3 Tutor Resource Disk
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Year:
Duration: 5 hours
5 Service and diagnose faults of
control components
Central-heating systems
Learning outcomes
The learner will be able to:
•
service and diagnose faults on central-heating system control components.
Tutor activity
Learner activity
• Demonstrate the:
• Observe the demonstration, take
mental or written notes, ask
questions.
– pre-service checks and testing
procedure to be carried out on
controls systems
– service procedure on a controls
system (usually undertaken as part
of boiler service)
– fault diagnosis procedures for a
range of common control faults.
• Supervise learner undertaking
activities.
• Carry out the pre-service checks and
tests on controls systems, which
should incorporate installation defects
(or use photographs of defective
installations during process).
• Carry out a correct service procedure
to manufacturers’ instructions on the
controls system.
• Diagnose and rectify at least two
faults on a pre-installed system.
• Practise until fully prepared for
assessment.
Resources
•
Hand tools
•
Electrical test equipment
•
Manufacturers’ instructions
•
A working control system with component faults (changed between learners)
•
Non-live electrical testing must be undertaken wherever possible
Evaluation
Evaluated by 6129 Scheme practical task:
•
CHFD-1 Central heating fault diagnostics.
Plumbing: NVQ and Technical Certificate Level 3 Tutor Resource Disk
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