ČSN EN 13203-1

This document is applicable to gas-fired appliances producing domestic hot water. It applies to both instantaneous and storage appliances; water-heaters and combination boilers that have: - heat input not exceeding 70 kW; and - hot water storage capacity (if any) not exceeding 500 l. A combination boiler can be fitted with a storage tank or not. The domestic hot water production can be integrated or coupled. The product is considered as a single appliance. This document specifies in qualitative and quantitative terms the performance in delivery of domestic hot water for a selected variety of uses. It also gives a system for presenting the information to the user.