Installation Operation Maintenance

Unit Options0 - 50% fresh air hoodThe 0-50% fresh air hood allows tointroduce fresh air into the unit.This is a manual device fitted on theback of the unit, sized for amaximum of 50% of the nominalrooftop air flow.This option includes for the hooditself, a wire mesh and a slidabledamper.The slidable damper has to beadjusted manually by removing thescrews and sliding it off up or down(Figure 28).The amount of fresh air introducedis then permanently fixed.Figure 28 - 0-50% manual fresh air hood1 = Mist eliminator2 = Air flow indicator46RT-SVX20B-E4