HearthStone WFP-75 Owner's Manual page 40

To install the outside air adapter:
1. Remove the blower door.
2. Seal the room air intake located on the right side by installing the plate over the
opening. Use the two clips on the right side and two screws on the left side as in
figure 37 to secure the plate.
3. Select which air inlet you wish to use figure 38 (you may use more than one) and
either remove the cover figure 39 (side inlet) or remove the knock-out (bottom and
rear inlets).
4. Install the adapter over the selected inlet with the 4 screws included (figure 40).
5. Secure a 3" insulated flexible conduit (not included) to the adapter and the outside
termination (not included) with the 2 adjustable straps (not included)
figure 35, 36 & 41.
Figure 37
Figure 40
Hearthstone Quality Home Heating Products, Inc ®
Figure 38
36
Figure 39
Figure 41
WFP-75 Model 8410