EN 13053 specifies requirements for the rating and tolerances of air handling units and their functional sections.
Scope
It addresses components such as filters, coils, fans, and heat-recovery sections, with defined rating methods and permissible tolerances.
The heat-recovery section
The standard treats the recovery section as a rated component, so its effectiveness is subject to the same tolerance discipline as other AHU parts.
Tolerances
| Aspect | Discipline |
|---|---|
| Rating method | Defined per component |
| Tolerance | Max deviation from rated value |
| Testing | Verification route |
Practical use
When procuring an AHU, reference EN 13053 so the recovery section is rated and warranted to a known tolerance, not left as an unverified sub-assembly.
Common pitfall
Specifying recovery effectiveness without an EN 13053 tolerance leaves the supplier free to under-deliver within an undefined band.