Ventilation Slide Rule Book SRB1

The ventilation slide rule is an easy-to-use pocket guide that reflects the general requirements of British Standard 5440-2 "Installation and maintenance of flues and ventilation for gas appliances of rated input not exceeding 70kW net (1st, 2nd and 3rd family gases)" – Part 2: "Specification for installation and maintenance of ventilation for gas appliances."

As well as providing essential technical advice, the pocket guide has 2 slide rules, one for open-flued appliances and one for room-sealed appliances, which when combined with the heat input of the appliance, gives quick and accurate information on the ventilation provision both for combustion and compartment cooling (if required).

Technical Specifications