DIN Standards Committee Gas Technology
Gas-fired instantaneous water heaters for the production of domestic hot water
Abstract
This document defines the specifications and test methods and also the classification, marking and energy labelling of gas-fired instantaneous water heaters for sanitary uses, hereafter called “water heaters”. This document applies to water heaters: - of types A, B and C as described at the appropriated clauses; NOTE For more information on the configuration of the types of appliances, see EN 1749:2020. - using one or more combustible gases corresponding to the three gas families and at the pressures stated in accordance with EN 437:2021; - of nominal heat input not exceeding 77 kW based on the gross calorific value (GCV); - with an ignition burner or with direct ignition of the main burner. In this document, the heat inputs are expressed in relation to the net calorific value (Hi). This document does not contain all the requirements necessary for: - boiling water appliances; - appliances intended to be connected to a mechanical means of evacuating the combustion products; - appliances which fulfil a dual role of space heating and heating water for sanitary use. This document only covers water heaters where the fan, if any, is an integral part of the appliance. This document is not intended to cover appliances designed and constructed to burn gas containing toxic components.
Begin
2023-12-08
WI
00048055
Planned document number
prEN 26
Responsible national committee
NA 032-03-01-02 AK - Domestic gas-fired water heaters
Responsible european committee
CEN/TC 48/WG 1 - Revision of EN 26 and EN 89
draft standard
Gas-fired instantaneous water heaters for the production of domestic hot water
2026-03
Order from DIN Media
previous edition(s)
Gas-fired instantaneous water heaters for the production of domestic hot water
2022-01
