Design of Heat Recovery Systems and Ducting Routes
Air
Flow
The air flow rates in our heat recovery systems are designed to comply with Part F of the building regulations and this is reflected in the size and number of heat recovery units recommended.
Ducting Route
Having
determined the flow rates to the various rooms in the dwelling our design
team draw up the ducting route using Autocad and Cadvent, (an Autocad plug-in
program produced by Lindab specifically for ventilation design).
It is preferable to have copies of the customer’s drawings in Autocad format so that the ducting route can be designed to avoid other services and structural impediments more accurately. If CAD drawings are not available we will draw an outline of the property in CAD before designing the route in Cadvent.
Design Approval
Once our preliminary design is complete we print out the result on A2 paper, showing the plans, typical section and an isometric view and send it to the client or architect. (Download our sample output . The client has the opportunity then to check the layout to ensure that there are no obvious problems or obstructions. If there are, these are conveyed to the designer who will make the necessary alterations. This process is repeated until the design is agreed.
Materials
Once
the design is agreed (and we like to allow 4 weeks for this process), a component
list of materials is produced (the program automatically produces this list
from the design). This component list is sent to the ducting manufacturer,
Lindab, who ship the materials directly to site. A further allowance of 3
weeks should be allowed for this. To be on the safe side, a period of two
months should be allowed between placing an order and the required date for
commencing installation of the system.
Installation
Installation can then be undertaken by the clients builder or using one
of our approved installers. With the component list, drawings and isometric
view, installation by the clients own contractor is quite straightforward.
When preparing a quotation we assess the airflow requirements and suitable HR unit but do not undertake any ducting route design until a deposit has been paid.