Monessen Hearth Direct Vent Gas Fireplace MDV500 - Manual (Page 13)

75D2523 13
3"
1"
1"
VENT INSTALLATION
Figure 8 - Combustible Clearances for Vent Pipe
A Minimum of 3" Clearance
to the Top Is Required Along
Horizontal Length until Flue
Pipe Penetrates Outside Wall.
WARNING
A Minimum 1"
Clearance to
Combustibles
Permitted All
Around Flue at
Outside Wall
WARNING
This fireplace must be vented to the outside. The venting system must NEVER be
attached to a chimney serving a separate solid fuel burning appliance. Each gas
appliance must use a separate vent system. Do not use common vent systems.
WARNING
Horizontal sections of this vent system
require a minimum of 3" clearances to
combustibles at the top of the flue and 1"
clearance at the sides and bottom until the
flue penetrates the outside wall. A minimum
1" clearance all around the flue is acceptable
at this point of penetration.
Vertical sections of this vent system require
a minimum of 1" clearance to combustibles
on all sides of the pipe.