ČSN EN 13141-4 (127131)

The category - similar standards:

Ventilation and air-conditioning systems

Annotation of standard text ČSN EN 13141-4 (127131):

This document specifies aerodynamic, acoustic and electrical power performance test methods for unidirectional ventilation units used in residential ventilation systems.

This document is applicable to ventilation units:

• - installed on a wall or in a window without any duct, A category;
• - installed in the upstream of a duct, B category;
• - installed in the downstream of a duct, C category;
• - installed in a duct, or with duct connection upstream and downstream, D category;
• - with one or several inlets/outlets;
• - installed in a system with a heat pump for domestic hot water or water for cooling or heating;
• - which can be used for supply or exhaust.

This document does not apply to:

• - fan assisted cowls which are tested according to EN 13141-5;
• - mechanical supply and exhaust units which are tested according to EN 13141-7:2021 or prEN 13141-8:2021