UNE-EN 50465:2015/A1:2019 Gas appliances - Combined heat and power appliance of nominal heat input inferior or equal to 70 kW (Endorsed by Asociación Española de Normalización in January of 2020.)
2020UNE-EN 50465:2015/A1:2019 Gas appliances - Combined heat and power appliance of nominal heat input inferior or equal to 70 kW (Endorsed by Asociación Española de Normalización in January of 2020.)
2015UNE-EN 50465:2015 Gas appliances - Combined heat and power appliance of nominal heat input inferior or equal to 70 kW (Endorsed by AENOR in March of 2015.)