Monessen Hearth SBV400 Outside Combustion Air, BBV, SBV Series Natural Vent Gas Fireplaces

BBV, SBV Series Natural Vent Gas Fireplaces OUTSIDE COMBUSTION AIR

NOTE: The use of outside air for combus- tion is optional unless required by building codes. It is only necessary to supply outside combustion air to one side of fireplace. Use model OAC4 combustion air kit (refer to Page 17).

1.Avoid extremely long runs and numer- ous turns in duct leading from fireplace to combustion air assembly. These condi- tions increase the resistance to free flow of air through duct. Figures 9 and 10

2.Locate combustion air assembly at an exterior location. Make sure the location cannot be accidentally blocked. Locate assembly above snow line to prevent snow from blocking assembly.

3.Never mount combustion air inlet assem- bly in garage or storage area where com- bustible fumes (gasoline) might be drawn into fireplace.

4.Combustion air may be drawn from crawl space under house when adequate sup- ply of air is provided by open ventilation. Figure 9

NOTE: Never take combustion air from attic space or garage space.

NOTE: Install outside combustion air ONLY ON LEFT-HAND SIDE of fireplace.

Duct Extend- ed to Miss Joist

To Outside

Wall

Figure 9 -	FP2021
Install Unit Above Basement or Crawl Space

Inlet Grille

in Soffit

(Overhang)

8” Maximum

FP2022

Figure 10 -

Install Unit on Concrete Slab with Optional Outside Air Runs

12 62D4036