19
79D0004
Lo-Rider Designer Vent Free Fireboxes
moDel ak-4 Combustion air assemblY
(CONTINUeD)
7. If the duct is the insulated type, push the insulation back from one end of the duct
approximately 2".
See Figure 29.
8. Slip the exposed end of the duct over the starting collar on the fireplace
.
9. Using the sheet metal screws provided, secure the duct end to the collar attached
to the fireplace.
10. Nail or screw the combustion air assembly to the surface of the wall.
note: if the wall covering is brick or stone, use appropriate masonry fasteners.
if necessary, splice the duct. use a model 403-duct connector to splice duct
sections.
installinG moDel 403 DuCt ConneCtor
1. Push insulation back approximately 2" from the end of each duct.
2. Slip each duct over duct connector until an equal length of connector extends into
each duct.
3. Place duck clamp over the end of each duct. Tighten duct clamp down snuggly.
4. Push insulation back into place and over duct clamp.
Figure 29 -
Install Duct Connector 403
Approximately
2"
Insulation
Duct
Connector
Duct Clamp
use of optional ak-4 outsiDe air kit