
The chimney flue damper must be fixed open to provide a minimum of 29 square inch flue opeining at all times during operation of the log set. A damper clamp can be used to secure the damper (see Accessories, page 18). See the National Fuel Gas Code ANSI Z223.1/NFPA 54, Section 6.6 for details about minimum flue size. INSTALLING DAMPER CLAMP Secure the damper stop clam to the edge of the damper as shown in Figure 2. If for any reason this clamp doesn't work on your fireplace, another suitable cla