Firstly, you will need to determine the naming conventions that you will be using for each of the elements of the project that you have looked at.

The air-conditioning certificate groups air-conditioning equipment into volumes, systems and components, in that hierarchy.



Volumes

If your inspection consists of a number of different out buildings, then you should choose to separate the buildings into different volumes.

In the example shown, three separate buildings within a hospital have been divided into three independent volumes, numbered from VOL001 through to VOL 003.

This is to enable the air-conditioning units within the buildings to have a unique volume identifier.

If you need to identify a particular air-conditioning component, then having independent volumes will make this task a lot easier.

An inspection does not necessarily need to have a number of buildings for you to break up the air-conditioning systems into volumes.

In this example, a school has had an extension built onto the side of an existing History block, and therefore you may choose to split the inspection into three distinct volumes.

An inspection does not have more than one volume. For most small buildings, it is very likely that only one volume will be present.



Systems

Within each volume you will have system components.

The system identifier identifies the air-conditioning equipment which influence the operation of each other.

For instance if two packaged split units serve the same room, the performance of one will affect the other, and would therefore form part of the same ‘system’ of cooling.

If two packaged split units serve different rooms then they do not affect the performance of each other. You may then define them as being separate systems.

Let’s look in more detail at the Physio block highlighted in the previous example.

We have defined the block as a separate volume, and within the block are two distinct methods of cooling, with a fan coil system and a separate chilled beam system.

In this example, we would define there as being two systems present – one for the fan coil system and one for the chilled beams system.


 

In this instance the two systems would be given individual system names of SYS001 and SYS002.

Given that they are all within VOL002, this gives the systems full system IDs of VOL002/SYS001 and VOL002/SYS002.

All units within a system must have been installed on the same date and have the same refrigerant type.



Unit Identifier

When entering information relating to Level 4 systems, there are three individual elements of information that you can enter information for.

These are the cooling plant information, the air handling unit information, and the terminal unit information.

You are required to give each cooling plant unit an individual identifier in the format of CSCP001, CSCP002 etc. In this reference the CSCP acronym stands for Centralised system cooling plant.


The first chiller would be given an identifier of VOL002/SYS001/CSCP001


The second chiller would have an identifier of VOL002/SYS001/CSCP002


The third chiller would be given an identifier of VOL002/SYS002/CSCP003. Note the different system number.


Each chiller has now been given a unique identifier.

Each air handling unit should also now be given an identifier. In this example only the first system has an AHU present. The naming convention for this unit is VOL002/SYS001/CSAHU001, with the acronym standing for Air Handling Unit


The final stage is to give the terminal units a unique identifier.

The term terminal unit is wide ranging and refers to the whatever is used to emit the cooling into the building. Both fan coils and chilled beams would be classified as terminal units.

Therefore the naming conventions for the 8 terminal units in the first system would be from VOL002/SYS001/CSTU001-08


For the second system they would be from VOL002/SYS002/CSTU09-11
All of the individual units have now been given a unique identifier.