Which definition describes a DIRECT cylinder?

• A cylinder that has no heat exchanger (coil) inside it

• This type of cylinder uses a heat exchanger, generally a coil, to separate the primary and secondary waters

• This is an older type of single feed cylinder using a basic form of heat exchanger. As the CWSC fills the cylinder, so the primaries are filled at the same time

• These cylinders and systems do not have an open vent. They operate under mains pressure, so are known as high pressure systems. This also means they do not require a CWSC in the loft, as their feed is from the rising main

Which definition describes a IN-DIRECT cylinder?

• A cylinder that has no heat exchanger (coil) inside it

• This type of cylinder uses a heat exchanger, generally a coil, to separate the primary and secondary waters

• This is an older type of single feed cylinder using a basic form of heat exchanger. As the CWSC fills the cylinder, so the primaries are filled at the same time

• These cylinders and systems do not have an open vent. They operate under mains pressure, so are known as high pressure systems. This also means they do not require a CWSC in the loft, as their feed is from the rising main

Which definition describes a Primatic cylinder?

• A cylinder that has no heat exchanger (coil) inside it

• This type of cylinder uses a heat exchanger, generally a coil, to separate the primary and secondary waters

• This is an older type of single feed cylinder using a basic form of heat exchanger. As the CWSC fills the cylinder, so the primaries are filled at the same time

• These cylinders and systems do not have an open vent. They operate under mains pressure, so are known as high pressure systems. This also means they do not require a CWSC in the loft, as their feed is from the rising main

Which definition describes a Unvented cylinder?

• A cylinder that has no heat exchanger (coil) inside it

• This type of cylinder uses a heat exchanger, generally a coil, to separate the primary and secondary waters

• This is an older type of single feed cylinder using a basic form of heat exchanger. As the CWSC fills the cylinder, so the primaries are filled at the same time

• These cylinders and systems do not have an open vent. They operate under mains pressure, so are known as high pressure systems. This also means they do not require a CWSC in the loft, as their feed is from the rising main

A Direct cylinder is also know as a?

• Single feed system

• Double feed system

• Low pressure system

• High pressure system

A IN-DIRECT cylinder is also know as a?

• Single feed system

• Double feed system

• Low pressure system

• High pressure system

This picture shows a?

• Primatic cylinder

• Unvented cylinder

• Thermal store

• Combination boiler

This picture shows a?

• Primatic cylinder

• Unvented cylinder

• Thermal store

• Combination boiler

The building regs that covers hot water systems is part?

• L & G

• S & M

• A & G

• L & H

Cylinder are commonly made from which two metals?

• Copper and stainless steel

• Copper and Brass

• Copper and LCS

• Copper and Plastic