Flueing and ventilation for gas appliances of rated input not exceeding 70 kW net (1st, 2nd and 3rd family gases) - Specification for installation of gas appliances to chimneys and for maintenance of chimneys Ingestion-build-159183 0 specification upon which DD

0 specification upon which DD 8788 is based

8 Product design and development process

written warnings

The management system

Flueing and ventilation for gas appliances of rated input not exceeding 70 kW net (1st, 2nd and 3rd family gases) - Specification for installation of gas appliances to chimneys and for maintenance of chimneys Ingestion-build-159183 0 specification upon which DDBS 5440 1: 2008 specifies requirements for the installation of gas appliances to chimneys, chimney installation work likely to be undertaken by gas engineers and operatives working under UK gas industry conditions and requirements for the maintenance of chimneys. BS 5440 1 is applicable to open flue chimneys for Type B gas appliances and room sealed chimney configurations for Type C gas appliances, each of rated input not exceeding 70 kW net family