How to determine FFU specifications and quantity for 220V power supply project? Electrical and group control must be planned simultaneously

Direct answer: 220V is the power supply condition of the FFU, not the basis for determining the air volume and quantity. The project should first calculate the required air supply volume in each area according to the cleanliness target, then select the 220V FFU that reaches the target air volume under the specified filter and design resistance, and check the number of units according to the air volume and actual layout. At the same time, determine the power supply zone, control address, working and duty speeds, and expansion requirements.

batchIn the FFU project , the number of devices, power supply and control are interrelated. If only the air volume calculation is completed and the power supply circuit, communication address or maintenance space is insufficient after installation, the original arrangement may need to be adjusted. For 220V projects, air performance and electrical control should be confirmed in the same equipment list.

Calculate air requirements first, then select single unit specifications

Clarify the cleanliness goals, target air supply volume or wind speed, airflow direction, and dust generation by personnel and equipment by process area. Then filter the FFU size according to the ceiling module and installation height, and check the product assembly specificationsHEPA or ULPA filter under design gear and resistance conditionsEffective air volume after 。

The supplier's information should indicate the air volume, static pressure corresponding to the target air volume, filter configuration, power and test conditions. You cannot use '220V', 'same size' or 'maximum air volume' to infer that two FFUs have the same air supply capacity.

The number of units passed two checks

Air volume check: The target air supply volume of each area is divided by the effective air volume of a single FFU under project conditions, and the result is rounded up.

Layout check: Arrange the initial number of units into the ceiling diagram, and check the air supply coverage of key process locations, conflicts between beam positions and lamps, return air paths and maintenance spaces. If the total air volume meets the requirements but local airflow weak areas appear, the specifications or locations should be adjusted, and the quantity should be adjusted if necessary.

The number of units obtained in this step is the preliminary configuration of the air system, which must be checked with the electrical capacity and control architecture later.

What matters need to be checked for 220V power supply?

The voltage, frequency, rated power, current and protection requirements required on the FFU nameplate should be checked, and the power supply circuit should be planned according to the number of units in the zone. The electrical capacity cannot only be estimated based on a single device; the operation and control requirements of multiple FFUs in the same partition must also be considered.

If the project plans to set two speeds for production and duty, the actual air volume at the corresponding gear should be confirmed respectively. Whether the duty speed is available shall be determined by the cleanliness and airflow verification in this state.

After the quantity is determined, the group control structure will be determined accordingly.

For batch projects, the partition, communication address, control interface and reserved location of each FFU should be clearly specified in the equipment list. When centralized speed regulation and status monitoring are required, they can be combinedFFU group control system planning controller and communication architecture. The expansion plan should also be proposed in the design stage to avoid readjusting the address and power supply when adding FFU later.

Aili Industrial can match fans, motors, filters and complete machine control solutions based on 220V power supply conditions, installation drawings, target air volume, filtration requirements and control zones. Before bulk purchasing, it is recommended to use a prototype to verify the air volume, static pressure, electrical and communication functions at the design level, and then write the configuration and test methods into the technical agreement. Specific specifications and quantities are subject to verification results under project conditions.

FAQ: Can the quantity of 220V FFU be determined directly by area?
Can't. The area is used for layout verification. The quantity must first meet the target air volume of the zone and be verified through air flow and on-site testing.

Frequently Asked Questions: If the production speed of the prototype reaches the standard, can it be used at the duty speed?
Can't judge directly. The air volume and cleanliness requirements should be checked separately for the two modes.

Frequently Asked Questions: What should I provide when requesting a quote?
It is recommended to provide floor and ceiling plans, target air volume in each area, filtration requirements, 220V electrical conditions, control zones, estimated number of units and expansion plan.