<P> The Model `` S '' , here as illustrated in 1924 , is an example of an early model convection space heater , by the Sala Heater & Mantel Co. in Dallas , Texas . The Model `` S '' was considered to be highly efficient radiant type of gas heater at the time . The heater utilizes radiant heat , and , by virtue of draft construction , supplements its power by drawing cold air through the facing , heating it and forcing it into the room through the register . This not only forces the circulation that provides an even warmth in every section of the room , but enables the heater to operate at all times with a perfectly cool exterior . Positive circulation provides an even warmth throughout the room , and guarantees a clean , humid , healthful air to occupants . </P>
<P> The Model `` S '' , here as illustrated in 1924 , is an example of an early model convection space heater , by the Sala Heater & Mantel Co. in Dallas , Texas . The Model `` S '' was considered to be highly efficient radiant type of gas heater at the time . The heater utilizes radiant heat , and , by virtue of draft construction , supplements its power by drawing cold air through the facing , heating it and forcing it into the room through the register . This not only forces the circulation that provides an even warmth in every section of the room , but enables the heater to operate at all times with a perfectly cool exterior . Positive circulation provides an even warmth throughout the room , and guarantees a clean , humid , healthful air to occupants . </P>
where does the airflow into a convector heater
where does the airflow into a convector heater
through the facing
through the facing