Which type of system CANNOT be used with central heating systems?

• Open Vented Double Feed Indirect Hot Water System

• Direct open vented hot water storage system

• Open Vented Single Feed (self-venting) Indirect Hot Water System

• Single Feed indirect hot water storage system

Name the metals that a boiler for a direct system of hot water must be made from

• Bronze, Copper, Stainless steel, Steel

• Copper, Iron, Steel, Aluminum

• Bronze, Copper, Stainless steel, Aluminum

• Copper, Iron, Stainless steel, Aluminum

Which two appliances do the Primary Circulation Pipes connect?

• Cylinder and Cistern

• Cylinder and Immersion Heater

• Boiler and Immersion Heater

• Cylinder and Boiler

Why is the cylinder called a ‘Double Feed Indirect Cylinder’?

• Because it contains a coil and requires two immersion heaters to fill both secondary and primary circuits.

• Because it contains a coil and requires two cisterns and therefore two feeds to fill both secondary and primary circuits.

• Because it contains a coil and requires only one cistern to fill both secondary and primary circuits.

• Because it contains a coil and requires two boilers to fill both secondary and primary circuits.

Which type of heat exchanger does the Double Feed Indirect Cylinder contain?

• Plate Heat Exchanger

• Regenerative Heat Exchanger

• Coil Heat Exchanger

• Shell and Tube Heat Exchanger

The Single Feed indirect system is better known as what?

• Primatic Cylinder

• Double Feed Indirect Cylinder

• Self-Venting Cylinder

• Direct Cylinder

How is the water in a primatic cylinder separated?

• By using a filter

• By using a baffle

• By using air entrapment

• By using a separator

Single feed systems are no longer allowed. True or false?

• Partially true

• False

• Can't say

• True

What material must NOT be used for a boiler that heats water directly in a hot water storage system?

• Copper

• Bronze

• Stainless steel

• Iron

What is the size of the primary flow and return pipework for a direct hot water storage system?

• 30mm

• 28mm

• 25mm

• 20mm