(a) The following definitions refer to gas fireplaces:

1. (1) Gas fireplace means a decorative gas fireplace or a heating gas fireplace.
2. (2) Decorative gas fireplace means a vented fireplace, including appliances that are freestanding, recessed, zero clearance, or a gas fireplace insert, that is fueled by natural gas or propane, is marked for decorative use only, and is not equipped with a thermostat or intended for use as a heater.

3. (3) Heating gas fireplace means a vented fireplace, including appliances that are freestanding, recessed, zero clearance, or a gas fireplace insert, that is fueled by natural gas or propane and is not a decorative fireplace.

   (b) Standard requirements for gas fireplaces.

4. (1) Gas fireplaces shall comply with the following requirements:

   1. (i) gas fireplaces shall be capable of automatically extinguishing any pilot flame when the main gas burner flame is extinguished;
   2. (ii) gas fireplaces must prevent any ignition source for the main gas burner flame from operating continuously for more than seven days; and
   3. (iii) decorative gas fireplaces must have a direct vent configuration, unless marked for replacement use only.