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6 6
Appliance Preparation
A. Vent Collar Preparation
CAUTION! Risk of Cuts, Abrasions or Flying Debris.
Wear protective gloves and safety glasses during instal-
lation. Sheet metal edges are sharp.
NOTICE: Once appliance is set up for top or rear venting,
it CANNOT be changed at a later time.
Top Vent
Note: Instructions for rear vented models on next page.
CAUTION! Risk of Cuts, Abrasions or Flying Debris.
Wear protective gloves and safety glasses during instal-
lation. Sheet metal edges are sharp.
NOTICE: Once appliance is set up for top or rear venting,
it CANNOT be changed at a later time.
Figure 6.1 (Generic Fireplace Shown) Cut the seal cap
strap across the rectangles next to the disk.
Figure 6.2 (Generic Fireplace Shown) Remove the white
gasket material covering the seal cap.
WARNING! Risk of Fire! DO NOT remove the installed
piece of insulation from the firebox top on CNXT4842IFT
models. Overheating will occur. See Section 5.A.
Heatilator • CNXT4236IFT, CNXT4842IFT Installation Manual • 2515-980 Rev. R • 1/23
Figure 6.3 (Generic Fireplace Shown) Remove the
seal cap.
NOTICE: Once the seal cap has been removed it CANNOT
be reattached.
Figure 6.4 (Generic Fireplace Shown) Remove the in-
sulation basket and white insulation from the center vent
pipe.
Figure 6.5 (Generic Fireplace Shown) Remove the
insulation from the outer vent pipe.
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