Level 3 Diploma in Plumbing and Domestic Heating Quiz

What question helps to determine changes in equipment usage?

• Has the typical use of the equipment changed?

• What is the equipment's size?

• How many buttons does it have?

• What is the equipment's weight?

What signs should be looked for in electrical equipment/components?

• Scorching or burning at the electrical terminals

• Loose screws

• Dust accumulation

• Color fading

What should be noted at this stage of inspection?

• Deviations to relevant regulations

• The color of the wires

• The brand of the components

• The age of the system

What action may be required if major contraventions to regulations are present?

• Discussion with the client

• Immediate replacement of the system

• Ignoring the issue

• Documenting the issue for later

Who can you contact directly for technical help?

• Friends

• Manufacturer

• Retailer

• Technician

What is the action if the main burner does not ignite?

• Replace the igniter

• Check the thermostat

• Clean the injector

• Replace the gas valve

What is the action if the thermocouple is damaged or dirty?

• Replace the thermocouple

• Clean and replace as necessary

• Correct the position

• Make good the connection

What does a low resistance reading, such as 0.01Ω, indicate?

• The switch is open

• The switch is closed and calling for heat

• The thermostat is broken

• The circuit is incomplete

What is indicated by a multimeter reading of zero?

• A short circuit

• An open circuit

• A functioning motor

• A disconnected motor

What opens after the flame is verified in the sequence of a gas fired fanned-flue boiler?

• The main burner

• The fan

• The gas valve solenoid

• The thermostat