Compatible for indoor or outdoor installation For use with all Raypak Digital models, sizes 206A - 408. The D-2 replaces the standard draft hood. Certified The D-2 Power Vent assembly is tested and certified to the latest edition of the American National Standard ANSI Z21.56 for pool heaters. Through-the-Wall CapableThe D-2 Power Vent assembly is a Category III mechanical draft venting system that operates with a positive vent static pressure and with a vent gas temperature that avoids excessive condensate production in the vent. All sizes are capable of relieving flue gases up to a maximum of 100 equivalent feet of vent length. All models have a 4” diameter exhaust connection and can be sidewall terminated. Using field-supplied cat III-certified vent material. Use the factory-supplied screened elbow as a downturned sidewall vent termination. Multi-PositionUsing a field-supplied adjustable 90° elbow, the flue gases may be discharged in any direction (see D-2 Power Vent manual for details). Or simply remove the elbow for vertical venting. Dual-Voltage Induced-Draft Blower (120/240 VAC)Factory set for 240 volts. Can be rewired in the field for 120v operation. Safety at Its Best The D-2 Power Vent is equipped with a draft proving switch. This switch ensures that the blower is operating before operating your heater. It is also equipped with a solid state control that allows the blower to purge any residual gas buildup in the heater after the heater has shut down.