Monessen Hearth MCUF42D SERIES USING OPTIONAL AK-4OUTSIDE AIR KIT, Left Side of, Insulation Ring

USING OPTIONAL AK-4 OUTSIDE AIR KIT

The use of outside air for combustion is optional unless required by building codes. It is only necessary to supply outside combustion air to one side of the fireplace. Use the model AK4 combustion air kit.

MODEL AK-4 COMBUSTION AIR ASSEMBLY

1.Remove the cover plate from the 4" outlet opening location on the left or right outside of the fireplace.

2.Place the insulation ring between the AK-4 starting collar and fire- place wall.

WARNING

DO NOT remove the cover if the outside air will not be connected.

3.Place the starting collar (4") into the hole on the side of fireplace. Fasten it in place with the four sheet metal screws provided. See Figures 21 and 22.

Note: The air starting collar extends through the fireplace outer wrap. When the air starting collar is securely attached, it will form a seal against the fireplace wall.

4. Attach outside duct to starting collar with duct clamp or screws. See Figure 22.

	Left Side of	Insulation Ring
	Fireplace			Screws		Air Starting
		AK-4 Starting
						Collar
		Collar
						Duct
		Sheet
		Meal
		Screws
		Shorter End			Left Side of
					Fireplace
		of Air Starting		Figure 22- Attaching Outside Duct
		Collar
Figure 21 - Attaching Outside Air Starting Collar					to Starting Collar
	and Insulation Ring to Left Side of Fireplace			6" Diameter
5. Cut a 6-inch diameter opening for model AK-4 in the outside				Hole		Screw
	wall covering where the outside vent is to be located. See
	Figure 23.					Nail
6. Select and cut a piece of duct long enough to attach to the
						Holes
	fireplace and stick out at least 3" beyond the face of the wall
	to which the AK-4 inlet air vent will be attached. See Figure			Duct
	22.		Extending
WARNING				3"min.
	Use FP-4 U duct for maximum efficiency				AK-4 Inlet
	and safety. Do not use a combustible				Air Vent	Screws
	duct. Always use UL Listed Class 0 or
	1 duct material.			Figure 23 - Combustion Air Assembly for
					Model No. AK-4	Continued

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