| Vent-free gas log sets are selected primarily as a supplemental and/or emergency heat source. The vent-free heater standard (ANSI Z21.11.2), to which all CHILLBUSTERs are designed and certified, limits the maximum gas usage to 40,000 BTU/hour; has the lowest permitted levels of combustion products of any gas appliance; and requires that an Oxygen Detection Safety Pilot (ODS) be an integral component of each vent-free heater. These requirements, along with Rasmussen's state-of-the-art burners, log design and adequate combustion and ventilation air, allow you to use your Chillbuster in a wood-burning fireplace with the damper closed or in an approved vent-free firebox enclosure. Glass doors must be wide open when burning. All CHILLBUSTERs are also certified to the vented decorative standard, so that the damper may be slightly opened for reduced venting applications and can be used in localities where vent-free is not permitted. Although most states allow the use of vent-free heaters, check your local codes and ordinances for permitted uses. The "C1" Chillbuster has traditional styling of logs. Reversible front log for either bark or split look. "C1" burners provide a concentrated rear flame. 7/16" grate.Vent-free applications are rated for a maximum elevation of 3500 feet. |