central heating advanced questions

What type of boiler is this

• A system boiler

• A hot water only boiler

• Central heating only boiler

• A combination boiler

Answer explanation

A combination boiler provides both heating and hot water on demand, making it versatile for homes. Unlike system or central heating only boilers, it doesn't require a separate hot water tank, which is why it's the correct choice.

What are these components called and what are they used for

• Automatic air release valves fitted at the lowest point of a central heating system to trap and release air build up in the system

• Automatic air release valves fitted at the highest point of a central heating system to trap and release air build up in the system

• Automatic siphon valves fitted at the high point of a central heating system to trap and release air build up in the system

• Drain off valve valves fitted at the lowest point of a central heating system to trap and release air build up in the system

Answer explanation

The correct choice is 'Automatic air release valves fitted at the highest point of a central heating system to trap and release air build up in the system.' These valves are essential for preventing air locks that can hinder system efficiency.

This component is called a:

• 3 port actuator valves

• 2 port actuator valves

• Automatic bi-pass valve

• Solenoid valve

Answer explanation

The correct choice is '3 port actuator valves' because these valves have three ports that allow for the control of fluid flow in multiple directions, distinguishing them from 2 port valves which only have two ports.

What is this photo indicating

• The paint is coming off the radiator

• The radiator is getting too hot

• Poor circulation due to a build up of iron-oxides

• Poor circulation due to a build up air

Answer explanation

The photo indicates poor circulation due to a build-up of iron-oxides, which can cause overheating and damage to the radiator, leading to paint deterioration.

What is this pipework component called

• Maxitee

• Manifold

• Bodge up

• Blending valve

Answer explanation

The correct answer is 'Manifold', which is a pipework component that connects multiple pipes or channels. The other options do not accurately describe a standard pipework component.

Which radiator has the highest output

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• You cant tell by looking, your need to consult the manufactures technical data

What is the purpose of a Thermostatic valve on a radiator

• To control the temperature of the water in the radiator

• To turn off the radiator when the air temperature in the room is at the required level according to the setting on the valve head

• To turn off the radiator when the air temperature in the room is at the required level according to the room thermostat

• To turn on the radiator when the air temperature in the room is at the required level according to the setting on the valve head

Answer explanation

The thermostatic valve regulates the radiator by turning it off when the room temperature reaches the desired level set on the valve head, ensuring efficient heating and comfort.

What type of boiler is this

• A system boiler

• A hot water only boiler

• Central heating only boiler

• A combination boiler

Answer explanation

A combination boiler provides both heating and hot water on demand, making it versatile for homes. Unlike system or central heating only boilers, it doesn't require a separate hot water tank.

What is the name of this central heating system component

• Feed and expansion tank

• Ventilation tank

• Feed and expansion cistern

• Cold water storage cistern

Answer explanation

The correct answer is 'Feed and expansion cistern' as it specifically refers to the tank that supplies water to a central heating system and allows for expansion, distinguishing it from other types of tanks.

What one of these components is NOT installed on a sealed heating system

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