Outside Combustion Air Precautions And Recommendations - MHSC BVST/BVSTE Installation & Operating Instructions Manual

B-vent specialty series natural vent gas fireplaces

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B-Vent Specialty Gas Fireplaces

NOTE: The use of outside air for combus-

tion is optional unless required by build-

ing codes. It is only necessary to supply

outside combustion air to one side of fire-

place. 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 12 and 13

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 12

NOTE: Never take combustion air from at-

tic space or garage space.

NOTE: Install outside combustion air

ONLY ON LEFT-HAND SIDE of fireplace.