What applicable standards should be listed in the technical documents for purchasing air-conditioning boxes?

The technical documents for purchasing air-conditioning boxes should list the applicable standards according to equipment performance, box structure, filtration, electrical control and on-site acceptance, and indicate the version and project adoption scope. The more standards do not mean the requirements are more complete; the key is which object each standard is used to constrain and what verification method is used.

First establish the corresponding relationship between requirements, basis and evidence

For example, the air volume and pressure of the whole machine, box sealing and materials, filter level and electrical protection may involve different documents, and one filtration standard cannot be responsible for the acceptance of the whole machine. The project professional team should verify the valid version under the target market, contract and applicable conditions to avoid directly copying the list of other projects.

The objects should be distinguished between complete machines, cabinets, components, electronic controls or on-site systems; the basis should indicate the standard name, version and the scope of the actual applicable terms; the evidence should include calculations, material documents, type data or agreed on-site tests. Only when the correspondence between the three columns is clear can the standard list be meaningful for implementation. For the difference between air conditioning box performance test and box test, please refer toWhat is the difference between air conditioning box body test and complete machine performance test?。

What are the constraints of performance and cabinet standards?

Performance requirements such as air volume, pressure, cooling and heat of the complete machine usually correspond to performance test methods or manufacturer's performance data. Box structure, sealing, insulation and other requirements shall correspond to the relevant standards of the box. The procurement documents should indicate whether each standard restricts the performance of the whole machine or the characteristics of the cabinet. The sealing grade of the cabinet cannot be used as proof of the performance of the whole machine.

Under what pressure conditions the box air leakage rate is compared, please refer toUnder what pressure conditions should the air leakage rate of air conditioning boxes be compared? . How to determine the thickness and structure of the box board, please refer toWhat indicators should be used to determine the thickness of air conditioning box panels? . The box test report should describe the prototype structure, size range, test conditions and applicable boundaries.

Filtration and electrical standards should be listed separately

The filter grade involves the filtration efficiency evaluation system, and the procurement documents should indicate the evaluation standards, particle size, and test methods used. Electrical controls involve power supply, grounding, protection and safety interlocking, and the applicable electrical standards and safety requirements should be listed. The objects of the two types of standards are completely different and cannot be summarized in a general term.

How to check the filter classification configuration, please refer toHow to configure the primary-efficiency and medium-efficiency filters of air-conditioning boxes in different stages? . How to describe the control point table and communication interface, please refer toWhat point tables need to be provided before the air-conditioning box is connected to the building automation system? . Filter products to viewHEPA/ULPA filter page, chemical filtration can be viewedChemical Filters Page.

On-site acceptance and factory information should be separated

Factory inspection, type testing and on-site acceptance answer different questions. Procurement documents should clarify which information is provided by the manufacturer, which tests are completed before leaving the factory, and which are performed on site after installation. For third-party testing or specific certification, the objects, scope, costs and responsibilities should be agreed in advance.

On-site acceptance may involve air volume balance, leak detection and performance testing, please refer toWhat conditions need to be checked before the air conditioner is turned on for the first time? andHow to change the debugging sequence of air conditioning box from stand-alone unit to system linkage? . The calibers of external static pressure, total pressure and static pressure should also be clearly stated in the acceptance clause. Please refer toWhat is the difference between static pressure, total pressure and static pressure outside the air conditioner box?。

What to do when differences occur between files

Procurement documents should indicate the priority of drawings, technical agreements and referenced standards, with written clarification of inapplicable or conflicting items. Unavailable data cannot be assumed to be certified by default. If the project does require third-party testing or specific certification, the object, scope and cost responsibilities should be clarified during the inquiry stage.

When the standard version is updated, you should confirm which version is used for the project to avoid contracts, drawings and inspection reports citing different versions. Whether the changed standards are applicable retroactively also needs to be stated in the technical agreement.

Aili industrial supporting equipment

When confirming with Aili Industrial Technology, the itemized response form can be used to check the standards and delivery evidence. The specific applicability and version will be finally confirmed by the project professional team. Aili Industrial can provide equipment information, material documents and interface verification support according to the agreed scope; the manufacturing end covers independent research and development and production of motors and fans, control systems, sheet metal, air filters and complete machine assembly. Standard requirements and equipment configurations can be corresponded in the same set of technical documents.

Product form can be viewedAir handling unit andFan box page; clean air supply package can be combinedFFU fan filter unit andEFU equipment end fan filter unit verification; terminal particle filtration can be combinedHEPA/ULPA filter confirmation; when it comes to gaseous pollution control, you can communicate separatelyChemical filter solutions. The applicability of specific standards, testing scope and delivery materials still need to be confirmed based on the project contract, target market and professional team.

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Related questions and answers

The more standards listed, the more complete the procurement document?
uncertain. The key is which object each standard corresponds to and what verification method is used. Listing standards that are inapplicable or cannot be verified will only increase ambiguity.

Can the cabinet standards prove the performance of the whole machine?
cannot. The cabinet standards restrict the characteristics of the cabinet structure and sealing. The air volume, pressure and cooling heat of the whole machine require corresponding performance data or testing.

Can Aili Industrial provide information according to procurement standards?
Equipment data and interface verification support can be provided according to the agreed scope. The specific applicable standards and versions must be confirmed by the project professional team.

Related articles

1. What is the difference between air conditioning box body test and complete machine performance test?

2. Under what pressure conditions should the air leakage rate of air conditioning boxes be compared?

3. What indicators should be used to determine the thickness of air conditioning box panels?

4. What conditions need to be checked before the air-conditioning box is turned on for the first time?

Key points for selection and acceptance inspection