August 2000 (Expires on November 30, 2005) G-00-03-B149
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Product Advisory Regarding the Installation of Gas Log Lighters in Wood Burning Fireplaces
Municipal Affairs has been made aware of several instances where high input gas log lighters have been mistakenly installed in residential wood burning fireplaces. The unit in question has a 1-foot long cast iron burner with no primary orifice or air shutters. When it was test fired at 7” water column the natural gas input was clocked at 394,000 Btuh. A recent investigation by Municipal Affairs indicates that only the manual shut-off valve had been evaluated by a recognized certification organization. However, the Certification Mark contained in the manufacturer’s product information seems to imply that the kit, including the burner, was certified. The CGA-B149 Installation Codes do not prohibit the installation of log lighters. Fireplace manufacturer’s instructions may prohibit installing gas lighters, or may specify the maximum burner input. Our primary concern with the log lighter installation is the protection of adjacent combustible materials. There are manufacturers of the factory built wood burning fireplaces that provide a knock out and a sleeve for a gas line to enter the firebox. In some cases, the manufacturer’s instructions prohibit the installation of log lighters, because the fireplace has not been tested and certified to address transfer of heat. Gas log lighters have been in existence and used in prefabricated and masonry fireplaces throughout Alberta for many years with an input of 30,000 Btuh, however, the maximum input must not exceed the limitations set by the fireplace manufacturers. Municipal Affairs, Safety Services strongly recommends that installers and owners ensure new and existing log lighter installations comply with the fireplace manufacturer’s certified instructions and the applicable Code.
Issue of this STANDATA is authorized by the Administrator
Alberta Municipal Affairs – Safety Services, Room 801, 10808 – 99 Avenue, Edmonton, Alberta, Canada, T5K 0G5 Safety Codes Council, Room 602, 10808 – 99 Avenue, Edmonton, Alberta, Canada, T5K 0G5
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GAS SUPPLY PIPING
1/ PREFABRICATED METAL FIREPLACES:
When installing a gas supply line into a factory built fireplace, consult the manufacturer’s installation instructions for the prefabricated metal fireplace that is being equipped with the log lighter. Carefully remove the knockout in the fireplace and after inserting the gas supply piping, seal the space between the gas pipe and the sleeve with a non-combustible insulation.
Holes shall not be drilled through the sides or bottoms of the prefabricated metal fireplaces for a gas supply line if the manufactures have not provided any access openings. Modification of the metal sides and/or bottom will void the solid fuel certification and the fireplace cannot be used for burning wood.
Reminder: There are manufacturer’s who prohibit the installation of log lighters, in their factory built fireplaces because they were not been tested and certified to address transfer of heat.
When installing a gas supply line into a masonry built fireplace, sleeve or double wrap the piping that passes through the masonry or concrete. Seal the space surrounding the gas pipe and the side of the firebox with a non-combustible material or insulation. WARNING: Holes shall not be drilled through the bottom of a masonry fireplace. SPECIAL INSTRUCTIONS: The installation of gas log lighters shall be completed under a gas permit and must be installed in accordance with the B149 Natural Gas and Propane Installation code. In addition, the manually operated key valve shall be installed in a readily accessible location in front of the fireplace. The installer shall instruct the user in the safe and correct operation of the gas log lighter.