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Section G2445 (621) Unvented Room Heaters
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Unvented room heaters shall be tested in accordance with ANSI Z21.11.2 and shall be installed in accordance with the conditions of the listing and the manufacturer's instructions.
One or more unvented room heaters shall not be used as the sole source of comfort heating in a dwelling unit.
Unvented room heaters shall not have an input rating in excess of 40,000 Btu/h (11.7 kW).
The location of unvented room heaters shall comply with Section G2406.2.
The aggregate input rating of all unvented appliances installed in a room or space shall not exceed 20 Btu/h per cubic foot (207 W/m3) of volume of such room or space. Where the room or space in which the appliances are installed is directly connected to another room or space by a doorway, archway or other opening of comparable size that cannot be closed, the volume of such adjacent room or space shall be permitted to be included in the calculations.
Unvented room heaters shall be equipped with an oxygen-depletion-sensitive safety shutoff system. The system shall shut off the gas supply to the main and pilot burners when the oxygen in the surrounding atmosphere is depleted to the percent concentration specified by the manufacturer, but not lower than 18 percent. The system shall not incorporate field adjustment means capable of changing the set point at which the system acts to shut off the gas supply to the room heater.
An unvented decorative room heater shall not be installed in a factory-built fireplace unless the fireplace system has been specifically tested, listed and labeled for such use in accordance with UL 127.
Ventless firebox enclosures used with unvented decorative room heaters shall be listed as complying with ANSI Z21.91.
Related Code Sections
Section G2445 Fuel Gas, (621) Unvented Room Heaters
Unvented room heaters shall be tested in accordance with ANSI Z21.11.2 and shall be installed in accordance with the conditions of the listing ...
G2445.4 Fuel Gas, (621.4) Prohibited Locations
The location of unvented room heaters shall comply with Section G2406.2 ...
Residential Code 2018 of Kansas > 24 Fuel Gas > G2445 (621) Unvented Room Heaters > G2445.4 (621.4) Prohibited Locations
G2445.6 Fuel Gas, (621.6) Oxygen-Depletion Safety System
Unvented room heaters shall be equipped with an oxygen-depletion-sensitive safety shutoff system. The system shall shut off the gas supply ...
Residential Code 2018 of Kansas > 24 Fuel Gas > G2445 (621) Unvented Room Heaters > G2445.6 (621.6) Oxygen-Depletion Safety System
G2445.7.1 Fuel Gas, (621.7.1) Ventless Firebox Enclosures
Ventless firebox enclosures used with unvented decorative room heaters shall be listed as complying with ANSI Z21.91 ...
Residential Code 2018 of Kansas > 24 Fuel Gas > G2445 (621) Unvented Room Heaters > G2445.7 (621.7) Unvented Decorative Room Heaters > G2445.7.1 (621.7.1) Ventless Firebox Enclosures
Section 621 Specific Appliances, (IFGC) Unvented Room Heaters
Unvented room heaters shall be tested in accordance with ANSI Z21.11.2 and shall be installed in accordance with the conditions of the listing ...