Vent Examples For Single Flue - Empire Comfort Systems FG28BMK(N,P)-1 Installation Instructions Manual

Single Flue - Straight Out Back
Min 6" Outside Wall
Min 2" From Fireplace to Wall for Intake Air
Min vent length 12"
Figure 13 displays a single flue (one-pipe) installation. Because
the distance from the fireplace to the first elbow is more than six
inches, the first 90° elbow must be considered into the total vent
length. The equivalent length of the second 90° elbow also needs
to be added to the total length, but the third elbow does not since it
is the flue terminal. The total horizontal vent length of the flue sys-
tem is seven feet, and the total vertical length is 27 feet. The two
90° elbows are equivalent to six feet, bringing the total to 40 feet.
Figure 14 is an example of how the fireplace can be vented if the
flue outlet is below the level of the floor.
H = 5' + 2' = 7'
V = 27'
(2) - 90° = 6'
Total = 40'
Single Flue - Horizontal Tall Vent Run
Example Calculation Max Vent Run 40 feet
Page 14

VENT EXAMPLES FOR SINGLE FLUE

Figure 12
Figure 13
H = 36'
V = 1'
(1) - 90° = 3'
Total = 40'
Figure 14
Single Flue - Vertical Vent Run
31793-3-1015