A whole school put into Legionella Ready, film by film.

0:00This is Oakfield School, our worked example in Legionella Ready. We have already recorded the building and its main water equipment. In this lesson, we will connect the cleaner’s sink, starting in its room and finishing with a saved diagram of its supplies.

0:17Open the lower ground floor and select Cleaner store B03. Then select the cleaner’s sink. We are using the equipment record already held in this room.

0:29Choose Show water supply. This opens the water-system schematic. The plant from the previous lesson is already saved. The next task is to describe how water reaches the rooms.

0:42First, choose Add a room group. We will name it School hot and cold supplies. In this example, the internal rooms share these supplies. The group organises those rooms; it does not make their individual connections for us.

0:59On the lower ground floor, select only the cleaner store. The two plant rooms remain outside this group because they contain the equipment supplying it.

1:09Now include the rooms on the ground, first and second floors. The outside taps will be handled separately. Before saving, check that the group contains the 24 internal rooms with outlets.

1:22Save the room group and return to the plant and distribution view. The new group is now available in the diagram. We will give it three connections: a cold supply, a hot supply and a hot-water return.

1:36Select the school group, then choose What does this connect to. Set the direction to Receives water from. This direction matters: we are describing water arriving at the group.

1:49For Water or circuit, choose cold water. For Connected equipment, choose the booster set. The form now describes the cold supply from the booster to the school group.

2:01Add a short note explaining that this is an assumed route for our teaching example, then add the connection. Its status remains unconfirmed. Close the details to continue.

2:13Add the hot supply in the same way. The direction is Receives water from, the circuit is hot water, and the source is the hot-water cylinder, or calorifier. Add the example note and save this separate connection.

2:27The return runs in the other direction. Start from the school group and choose Supplies, then the return circuit and the hot-water return point. Add the note and save. We have now recorded the group’s cold supply, hot supply and return.

2:44We can now work on the cleaner’s sink itself. Choose Cleaner store B03 in Schematic view. Open Repeat a room, then choose Build this room myself. This brings the existing sink into the diagram without adding its supplies.

3:00Select the cleaner’s sink and open What does this connect to. Choose Receives water from, cold water, and School hot and cold supplies. Add the example note, then add the connection. Water is travelling from the group towards the sink.

3:19Now add its hot feed. Keep the direction as Receives water from, choose hot water, and use the same school group. Add the note and save. These are two separate supply connections to one existing outlet.

3:35Return to the whole view. Follow the cold and hot connections towards the cleaner’s sink. The diagram now relates this room’s outlet to the shared supplies and the upstream plant.

3:47Save the schematic, then reload the saved version. Open the cleaner store again and check that both connections are present. This confirms that the work is stored in the school record.

3:59The first room is complete. We have kept its existing equipment record, added its two supplies and checked the saved result. In the next lesson, we will use these supplies to connect the kitchen, staff room and first-aid room.