A customer would like to change the layout of central heating pipework, which one of the following actions should be taken?

Check customers request comply with current regulations

Alter the pipework accordingly in accordance with the customer’s request

Ask the customer to draw out a scale drawing of the new proposal

Explain that the work has been agreed and an alteration would be impossible

When calculating heat design loads in bathrooms, it is advisable to allow for increased air change rates in the heat loss calculation when?

There is mechanical extract ventilation

The bathroom is combined with a WC

The bathroom has double glazed windows

The bath has been replaced by a shower

Which one of the following is most likely to be caused by an oversized circulator?

Excessive noise and an increase in electricity running costs

Excessive noise and a reduction in electricity running costs

Reduced noise and an increase in electricity running costs

Reduced noise and a reduction in electricity running costs

Which one of the following contains information on the specific details of an expansion vessel for a sealed domestic central heating system?

Manufacturers installation instructions

Domestic building services compliance guide

The most economical method of improving the recovery rate of a hot water storage system is by installing a

Second boiler closer to the cylinder

Second cylinder with immersion heaters

Which one of the following is the most accountable method of presenting a quotation for a job?

Written in detail, signed and copied

Orally, over the telephone in brief

Orally, face to face giving a detailed outline

Written by text (short message service)

The main function of the component in the image below is to?

Prolong the life of the circulator

Discharge at a pre-determined pressure

Control the temperature of under floor heating

Isolate the boiler in emergencies

Which one of the following would be used to resolve an intermittent fault on a sealed central heating system?

Customer is questioned about the problem prior to commencing the work

Customer writes to the contractor confirming the system design

A detailed pre-inspection is carried out before commencing any work

Contractor consults with the manufacturer prior to attending the job

Which one of the following documents is most likely to contain a fault finding flowchart for central heating boilers?

Domestic building services compliance guide

Which one of the following is the most likely cause of a low system pressure gauge reading on a sealed central heating system?

Incorrect balancing valve setting

Circulator is located on the return

Filling loop is constantly passing

A customer complains that a newly installed heating system is not reaching the design temperature. Which one of the following faults is the most likely cause?

Room thermostat in direct sunlight

Room thermostat is 1.5m above floor level

When commissioning a new central heating system the first time the system is filled to ensure that the?

Automatic air vents are removed to prevent air locks

Which one of the following sequences is the correct method of filling a conventional central heating system?

Turn on the isolation valve allowing the system to fill, making sure motorised valves are open and bleed the radiators

Turn on the isolation valve allowing the system to fill, making sure motorised valves are closed and bleed the radiators

Turn on the isolation valve allowing the system to fill, making sure any bypass valves are closed so as not to fill the flow and return together

Turn on the isolation valve or cold water stop tap allowing the system to fill and turn on the circulator to fill the system automatically

When commissioning a central heating system contains a low loss header, the boiler connections were showing signs of leakage. Which one of the following actions should be taken?

Report the defect to the customer for further direction

Identify the fault, isolate and carry out the repair

Leave it and hope the heat will take up the leak

Identify the fault and report it to the gas safe register

Which one of the following represents the correct testing procedure for use on plastic pipework?

Hydraulic pressure tester used to test the system to 1.5 times the maximum operating pressure for 1 hour

Hand pump used to test the system to 1.5 times the working pressure for 30 minutes

Hydraulic pressure tester used to test the system to 1.5 times the working pressure for 10 minutes

Manometer used to pressure the system up to the correct maximum operating pressure

The main principle of balancing a central heating system is achieved by

Running the system at the index circuit and gradually opening up the lock shield valves on the other radiators

Running the pump on full with all radiators fully open then adjusting the pump

Fully opening all the TRVs and regulating them with the zone valves

Adjusting the boiler thermostat in order to get an even temperature in all the rooms

Domestic solid fuel boiler installation under the building regulations can be certified by a member of a government recognised

Microgeneration certification scheme

Licensed plumber certification scheme

Design information/calculation sheets are used by the installer to create an accurate quotation by

Providing a cross check for the customer for work carried out against the quote

Including all the prices of the components for the customer to calculate

Providing information on sizes and number of components to price against

Including all the prices of the components for the manufacturer to calculate

In an open plan design ground floor dwelling, under floor heating pipes should not laid under

The location of the dining table

The most likely location for the system component in the image below is

At the highest point of the system

At the lowest point of the system

Using low loss headers on multi boiler central heating installations enables

A number of balanced independent pump circuits

Smaller radiators to be installed

Filling loops to be of a smaller diameter

Large radiators to be installed

GMJ 6189 CH

Authored by Glen Johnson

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Vocational training

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which one of the following types of heating system uses the components shown in the image below?

S plan

Y plan

W plan

C plan

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A heating system can be installed without separated timed space heating zones in a domestic dwelling, providing the floor area is not larger than?

100 m2

150 m2

1000 m2

1500 m2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which one of the following recognises the outside temperature and regulates the boiler heat output accordingly?

Room thermostat

Anemometer

Cavity thermostat

Weather compensator

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The combination of a fan and heat exchanger is used in the installation of which one of the following?

Micro combined heat and power

Air source heat pump

Ground source heat pump

Biomass heating system

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which one of the following components is designed to minimise the amount of uncontrolled energy from the pipework in an under floor heating system?

Gravity valve

Pump

Manifold

Pipe coil

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The main function of an under floor heating manifold when fitted with flow metres is to

Measure water flow

Aid system balancing

Isolate heating appliances

Aid chemical treatment

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the recommended maximum number of circuits when a single manifold is used on an under floor heating system, in order to avoid overheating?

4-7

8-9

10-12

15-18

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GMJ 6189 CH

Which one of the following types of heating system uses the components shown in the image below?

A heating system can be installed without separated timed space heating zones in a domestic dwelling, providing the floor area is not larger than?

Which one of the following recognises the outside temperature and regulates the boiler heat output accordingly?

The combination of a fan and heat exchanger is used in the installation of which one of the following?

Which one of the following components is designed to minimise the amount of uncontrolled energy from the pipework in an under floor heating system?

The main function of an under floor heating manifold when fitted with flow metres is to

What is the recommended maximum number of circuits when a single manifold is used on an under floor heating system, in order to avoid overheating?

The installation of multiple boilers in a heating system incorporating flow and return connections is recommended with the use of a

Building Regulations Part L1B covers the requirements for new central heating system installations in

A customer would like to change the layout of central heating pipework, which one of the following actions should be taken?

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