COMBUSTION AIR ASSEMBLY

COMBUSTION AIR ASSEMBLY

MODEL OAC-4 COMBUSTION AIR ASSEMBLY

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

2.Place starting collar (4") into hole on left side of fireplace. Fireplace shortest side of air starting collar through fireplace outer wrap. Fasten starting collar in place with four (4) sheet metal screws provided. See Figure 13.

WARNING

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

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.

3.Cut a 6" diameter opening for model OAC-4 in the outside wall covering where the outside vent is to be located. See Figure 15.

4.Select and cut a piece of duct long enough to attach to the fireplace and stick out at least 3" beyond the face of the wall to which the OAC-4 inlet air vent will be attached. Cut duct with a standard pocket knife. See Figure 14.

WARNING

Do not use a combustible duct. Always use UL Listed Class 0 or 1 duct material. If necessary to splice duct, use Model 403 duct connector to splice duct sections.

Left Side of

 

Fireplace

OAC-4

 

Starting

 

Collar

Manual backgroundManual backgroundManual backgroundManual backgroundManual backgroundManual background Sheet

Metal

Screws

Shorter End of Air

Starting Collar

Figure 13 - Attaching Outside Air

Starting Collar to Left Side of Fireplace

Screws

Air Starting

 

Collar

 

Duct

Left Side of

Fireplace

Figure 14 - Attaching Outside Duct

to Starting Collar

5.If using insulating duct, push the insulation back from one end of the duct approximately 2". See Figure 15.

6.Slip the exposed end of the duct over the starting collar on the fireplace.

7.Using the sheet metal screws provided, secure the duct end to the collar attached to the fireplace.

8.Nail or screw the combustion air assembly to the sur- face of the wall.

6" Diameter

Hole

Duct Manual background

Extending

3"min.

AK-4 Inlet

Air Vent

Screw

Nail

Holes

Screws

Figure 15 - Combustion Air Assembly for

Model No. OAC-4

62D4036

17

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Monessen Hearth BBV400, SBV400, SBV500 manual Combustion Air Assembly

SBV400, BBV400, SBV500 specifications

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