Gas-fired central heating boilers - Specific requirement for condensing boilers with a nominal heat input not exceeding 70 kW
STANDARD published on 1.7.1999
Designation standards: ČSN EN 677
Classification mark: 075326
Catalog number: 56228
Note: WITHDRAWN
Publication date standards: 1.7.1999
Approximate weight : 60 g (0.13 lbs)
Country: Czech technical standard
Category: Technical standards ČSN