What on-site dimensions need to be provided before FFU non-standard size customization?
Direct answer: Provide at least the length and width of the installation opening, available height, fixed location, air inlet and return interface size and filter replacement space. The dimensions should indicate the measurement basis, allowable deviations and the location of on-site obstacles; only providing 'room dimensions' or 'equipment width' is not sufficient to determine the non-standard FFU structure.
Non-standard FFU is often used in projects where the ceiling modules are inconsistent, the internal space of the equipment is limited, or the air inlet interface is special. Customized sizes will affect the box, fan, filter and wiring layout, so the on-site drawings should also explain how the equipment is installed, how to supply air, and how to repair it.。
Recommended on-site dimensions
size category |
What needs to be marked |
Installation opening |
The net length and width of the ceiling or equipment opening, the frame size and the allowable deviation |
available height |
Clear height above openings or inside equipment, location of beams, pipes and other obstructions |
fixed structure |
Lifting points, supporting edge locations, fixing hole spacing and available mounting surfaces |
Inlet and return air interface |
The location, direction, net size and connection method of the air inlet and return air outlet |
Air supply range |
Target air supply surface size, distance between key process locations and FFU outlet |
electrical location |
Power and communication wiring locations, cable entry directions and wiring space |
maintenance space |
Direction of filter replacement, access openings and operating distances for motors and control components |
The site dimensions should be attached to the plan, section and interface details, with the units and measurement datum indicated. If some dimensions have not yet been determined, they should be marked 'to be confirmed' on the drawing to avoid making prototypes based on estimated values.
Why can't the overall size alone determine the solution?
As the cabinet becomes thinner or shorter, the fan mounting location, airflow path, and filter size may change. After determining the non-standard shape, you still need to checkThe installation and sealing of HEPA/ULPA filters , the resistance under the target air volume, and whether the whole machine can achieve the required air supply under project conditions. The equipment 'fits in' is only the first step in customization.
Aili Industrial's fans, motors, control systems, sheet metal and filters are all self-produced and self-developed, and the box structure and key components can be matched synchronously according to the on-site dimensions. For equipment-side and space-limited projects, it is recommended to confirm the prototype size, interfaces, maintenance methods and air volume performance before confirming the batch size.FFU configuration . Specific dimensions and performance are subject to project drawings, technical protocols and prototype test results.
When providing drawings, it is best to write down three directions at the same time: where the FFU is installed, where the air comes in and out, and where the filter is replaced. This is more helpful in forming an implementable non-standard solution than just giving the length, width and height.
