Providing guidance and technical illustrations on the installation, service and maintenance of gas water heating appliances from gas fired instantaneous water heaters, storage water heaters (including pressurised types) to independent circulators of rated heat input not exceeding 70kW net, burning 2nd family gases (natural gases) and 3rd family gases (LPG).

Contents include: Water heaters (general introduction) Instantaneous water heaters Storage water heaters and independent circulators General installation details