Installation Planning - Monessen Hearth BDV300 Installation And Operating Instructions Manual

VENt INStALLAtION

INStALLAtION pLANNING

There are two basic types of direct-vent installation:
• Horizontal Termination
• Vertical Termination
It is important to select the proper length of vent pipe for the type of termination you choose. It is
also important to note the wall thickness.
FOR hORIZONtAL tERMINAtION
Select the amount of vertical rise desired. All horizontal run
of venting must have 1/4" rise for every 12" of run towards
the termination below 7
more vertical rise, the horizontal run may runlevel. NEVER
run vent piping downward.
You may use up to three 90° elbows in this vent configu-
ration. Refer to Horizontal Termination Configurations on
pages 0 and 1.
FOR VERtIcAL tERMINAtION
Measure the distance from the fireplace floor to the ceiling. Add the ceiling thickness, the vertical
rise in an attic or second story, and allow for sufficient vent height above the roof line.
NOTE: You may use two 45° elbows in place of a 90° elbow. You must follow rise to run ratios
when using 45° elbows. The appliance is approved for use with three 90° elbows maximum
or a combination of 90° and 45° elbows up to a maximum of 270°.
For two-story applications, firestops are required at each floor level. If an offset is needed in the attic,
additional pipe and elbows will be required.
You may use a chase with a vent termination with exposed pipe on the exterior of the house. See
Installing Vent System in a Chase below. If pipe is enclosed in chase, it is not exposed.
It is very important that the venting system maintain its balance between the combustion air intake and
the flue gas exhaust. Certain limitations apply to vent configurations and must be strictly followed.
INStALLING A VENt SyStEM IN AN OutSIDE chASE
A chase is a vertical boxlike structure built to enclose venting that runs along the outside of a build-
ing. A chase is required for such venting.
Treatment of firestops and construction of the chase may vary from building type to
building type. These instructions are not substitutes for the requirements of local
building codes. You must follow all local building codes.
When installing in a chase, you should insulate the chase as you would the outside walls of
your home. This is especially important in cold climates. Insulation should be considered
a combustible material. Maintain proper clearances to all combustible materials.
54D0700
1
/ ft. of vertical rise. With 7

Never run the vent pipe downward. this
may cause excessive temperatures
1
/ ft. or

which could cause a fire.
BDV Series Gas Fireplace
15