Napoleon Blower Kit with Variable Speed and Thermostatic Control - GZ550-1KT

The replacement blower for your model as listed in the manual is the NZ64. The blower you have referenced has not been listed as compatible with the Napoleon High Country.

This is the correct blower for your GD16-N, but the outlet must be grounded. I recommend contacting a locally licensed electrician for further information.

If the unit you have is one of the models pictured with your supplied manual, the correct blower to use is the Napoleon AUB Universal Blower Kit for Ascent Series Fireplaces.

This blower is indeed intended for use with only certain Napoleon brand gas fireplaces, stoves, and fireboxes. The sizing may not match up with other brands.

The fan speed is controlled by a rheostat, similar to what is used in a light dimmer switch. The rheostat can be mounted in the bottom of the unit or the wire leads can be extended to allow you to mount the control within a standard single gang switch box within the wall.

Indeed, this is the proper blower for your direct vent fireplace.

Almost every blower system is designed so that air is drawn through the bottom louvers/insets of the fireplace and circulated around the back, with the heated air exiting from the top. Because of the natural buoyancy of heated air, the blower is able to simple increase natural convection, making it more effective. The blower is not designed to be reversed.

This blower features a CFM of 105.

This is indeed the proper blower assembly for use with both the BGD and GD36NTR.

It's totally up to you! Both the GZ550-1KT and the B440-KT are approved for the GD33NR. The economy B440-KT is not quite as powerful or as efficient as the GZ550-1KT but it will do the job just fine.