1 Scope
This document is applicable to gas-fired appliances producing domestic hot water.
It applies to condensing combination boilers with passive flue heat recovery device
(PFHRD) that have:
-
— a heat input not exceeding 400 kW;
-
— a hot water storage tank capacity (if any) not exceeding 2 000 l;
-
— a declared load profile between M to 4XL.
In the case of combination boilers, with or without storage tank, domestic hot water
production is integrated or coupled, the whole being marketed as a single unit.
For this document, some tests and calculation results of EN 13203‑2:2022 are used to calculate the energy consumptions.