Monessen Hearth GPF36 Operations Instructions download pdf (Page 23)

43D0121 23

FOR USE OF 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 replace. 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 replace.

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

place wall.

3. Place the starting collar (4") into the hole on the side of replace. Fasten it in place with the four sheet metal screws

provided.

See Figures 33 and 34.

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 34.

DO NOT remove the cover

if the outside air will not be

connected.

WARNING

Figure 33 - Attaching Outside Air Starting Collar and

Insulation Ring to Left Side of Fireplace

Figure 34 - Attaching Outside Duct

to Starting Collar

Insulation Ring

AK-4 Starting

Collar

Sheet Meal

Screws

Left Side of

Fireplace

Shorter End

of Air Starting

Collar

Air Starting

Collar

Duct

Screws

Left Side of

Fireplace

5. Cut a 6-inch diameter opening for model AK-4 in the outside

wall covering where the outside vent is to be located. See

Figure 35.

6. Select and cut a piece of duct long enough to attach to the

replace 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

34.

Figure 35 - Combustion Air Assembly for

Model No. AK-4

Nail

Holes

Use FP-4 U duct for maximum efficiency

and safety. Do not use a combustible duct.

Always use UL Listed Class 0 or 1 duct

material.

WARNING

6" Diameter

Hole

Duct

Extending

3"min.

AK-4 Inlet

Air Vent

Screw

Screws

Continued

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Monessen Hearth GPF36 Operations Instructions Page 23

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