Hearthstone Quality Home Heating Products, Inc ®
WFP-75 Model 8410
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2.6 HOT AIR DUCTING INSTALLATION
Different hot air ducting systems can be installed with the WFP-75:
• Gravity kit
•
Forced air kit
2.6.1 Gravity Convection Air Kit
The kit includes:
• 2 x hot air outlets (grilles and frames);
• 2 x 90
°
elbows with brackets;
• 1 deflector.
The gravity kit allows you to block the upper fireplace grille. To do so, follow the steps below:
1.
Remove the faceplate;
2.
Install the deflector as shown on figure 28;
3.
Put the faceplate back into place.
Use 8” single wall ducting to connect the grilles to the fireplace. The safety rules for hot air
ducting gravity kit installations are the following:
•
Minimum height* 68" (1.7 m)
• Maximum length 10' (3m) (see figure 30)
*The minimum height of the hot air ducting must be measured from the floor to the top of the
hot air grilles.
Figure 28
Figure 29
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