How to view the FFU parameter table? Which parameters deserve the most attention?
Direct answer: Look at the FFU parameter table, first confirm the target air volume and its corresponding static pressure , and then check the filter grade and resistance, appearance and installation dimensions, power supply and control method. Power, noise and wind speed uniformity are also worthy of attention, but should be compared under the same configuration and under the same test conditions. The parameter table is the basis for selection, and the final configuration must correspond to the project site conditions and acceptance requirements.
First look at the air performance: air volume and static pressure should appear in pairs
The 'maximum air volume', 'rated air volume' and 'design air volume' in the parameter table may not be the same value. The maximum air volume usually corresponds to specific test conditions and cannot be directly regarded as the air supply volume after installation. What is more useful in engineering is to confirm: How much resistance can FFU overcome under the project target air volume?
parameter |
Main questions answered |
Check the key points |
Air volume |
How much air can FFU send out? |
The corresponding rotation speed, filter and test status of the value |
static pressure |
How much resistance can be overcome at this air volume? |
Whether it corresponds to the target air volume, whether it is fan or whole machine data |
Face velocity and uniformity |
Does the airflow on the outlet surface meet the process requirements? |
Measuring location, measuring point layout and agreed working conditions |
If the data only states 'maximum air volume' and 'maximum static pressure' respectively, you should further obtain performance data at the same operating point to avoid combining the maximum values of two different working conditions.
Look at the filter again: in addition to efficiency, you must also understand resistance
The filter parameter table should include grade, applicable air volume, initial resistance, size and sealing form. SelectFor HEPA/ULPA filters , the efficiency level needs to match the cleanliness target; the resistance needs to be calibrated together with the fan operating point. After the filter specifications are changed, the air volume of the entire machine may also change.
For projects that require filter replacement, the replacement direction, maintenance space, and sealing method of the filter and box should also be confirmed. These conditions will affect equipment installation, testing and subsequent maintenance.
Dimensions and electrical parameters determine whether it can be used in the field
Parameter category |
What to look for in the parameter list |
Structural installation |
Overall dimensions, cabinet height, installation method, air inlet position, filter size, and overall machine weight |
Electrical configuration |
Input voltage, frequency, rated power or power range, motor and drive configuration |
control communication |
Speed regulation mode, single machine or zone control, communication interface, status feedback items |
Operation and maintenance |
Noise test conditions, maintenance methods, filter replacement conditions |
Among them, 'support centralized control' cannot replace the specific interface description. Multiple FFU projects should also clarify zoning, address planning, work and duty modes, and docking requirements for on-site control systems. Related plans can be referred toAili Industrial FFU centralized control system。
Comparing the two parameter tables, it is recommended to ask five questions:
Are the air volume and static pressure the data of the whole machine under the same rotation speed and the same filter configuration?
Does the filter grade, size, and initial resistance meet project requirements?
At what air volume and control settings are the rated power and noise measured?
Can the box size, air inlet space and maintenance methods be adapted to the site?
When group control is required, are the communication interface and status feedback clearly stated?
Answering these five questions will make it easier to find an FFU solution that meets the project conditions than just sorting by a single value or appearance size.
How does Aili Industrial convert parameter tables into project configurations?
Aili Industrial develops and produces motors, fans, control systems, sheet metal structures and filters in-house. For standard ceilings, non-standard equipment sizes or specific air volume and static pressure requirements, the overall machine configuration can be discussed around the matching relationship of these components, so that the air performance, filtration and control requirements in the parameter table can correspond to the actual product.
CheckWhen making customization requirements for Aili Industrial FFU products , it is recommended to provide cleanliness targets, target air volumes, filter requirements, installation dimensions, power supply, control methods and estimated quantities. Specific performance and acceptance conditions are subject to the project technical agreement and test results under agreed working conditions.
FAQ
Is the rated power on the parameter table the actual operating power?
uncertain. The actual input power will vary with the operating speed and working point, and the test data under the target operating conditions should be checked.
Can FFUs of the same size and air volume be directly interchanged?
It is also necessary to compare the static pressure, filter configuration, electrical interface, installation method and control requirements at the target air volume.
What parameters should be written into the procurement technology agreement?
At least clarify the overall machine size, filter configuration, target air volume and corresponding static pressure, power supply and control method, and state the test conditions and acceptance methods.
