AS 4558-2000 (AG 108)

Provides minimum requirements for the safe design, performance of decorative gas log and other fuel effect appliacnes with gas consumption not exceeding 73 MJ/h.

The scope of these requirements is limited to appliances that are designed primarily to have a decorative appearance. An appliance that is intended for space heating (in the form of radiant or convected heat) shall be certified to the requirements of AS 4553 / AG 103 – Gas space heating appliances.
NOTE: Indoor flueless appliances are excluded from the scope of this Standard.
These requirements apply to new decorative gas log, coal or other fuel effect fires constructed totally from new materials and components and with gas consumptions not exceeding 72 MJ/h.
Two types of appliances are defined as follows:
Type 1 An appliance which consists of an assembly or kit that comprises a burner, simulated fuel effect logs or coals, grate and decorative surround and which is designed to be installed in a fireplace of indeterminate specifications and in which the chimney is intended to convey flue products to outside air.
NOTE: An “assembly or kit” shall have the burner, gas manifold and controls provided as a single assembly and may require assembly of such parts as logs, granules, grate and decorative surround.
Type 2 An appliance which consists of a complete assembly which includes a fire box/surround and a conventional fabricated flue system. The flue shall be either supplied with the appliance or clearly specified by the manufacturer in the installation instructions.
NOTE:
· Open flued Type 2 appliances shall have a draught diverter or alternative system as an integral part of the appliance to prevent an unsafe condition caused by changes of pressure in the flue.
· "Room sealed" appliances shall be considered as Type 2
· Type 2 appliances may be installed into masonry fireplaces provided the fabricated flue is included as a chimney liner.

First published as AS 4558/AG 108-2000.