1 Scope

1.1 These requirements apply to fireplace accessories that are intended only for field installation into or attachment to existing masonry fireplaces. Fireplace accessories include items such as heat exchangers, glass door assemblies, and the like. For the purpose of these requirements, fireplace accessories do not include fireplace inserts or devices that incorporate a closed fire chamber.

1.2 Fireplace accessories as covered by these requirements are intended for installation in accordance with the Standard for Chimneys, Fireplaces, Vents and Solid Fuel Burning Appliances, NFPA 211, and in accordance with codes such as the International Building Code, International Mechanical Code, and related mechanical codes.

1.3 A fireplace accessory, as covered by these requirements, is intended for use with solid wood fuel, as specified by the manufacturer.

1.4 These accessories may include:

a)    Field-installed cord-connected or fixed blower assemblies; and

b)    Other field-installed electrical accessories rated at 250 volts or less to be employed in ordinary locations in accordance with the National Electrical Code, NFPA 70.

Summary of Topics

This new Fifth Edition of ANSI/UL 907 dated September 4, 2024 includes the following changes in requirements:

– Addition of Referenced Publications: Section 2;

– Correction of conversions: 10.2, 10.7, 13.3, 13.5, 13.6, 14.3, 16.2.2, 19.2.3, 24.2.7, 40.1.1, 40.1.2, 40.2.1, 41.2, 43.1, and 47.2.2; and

– Editorial updates throughout the document