Empire Comfort Systems DVCTL60CFP95N Instructions D'installation page 28

EFFECTIVE LENGTH IS CALCULATED BY THE FOLLOWING
EQUATION:
Equation 1
Effective length=Vertical Run Up + (2 × Vertical Run Down) +
Horizontal Run + (3 × # of 90° elbows) +(1.5 × # of 45° elbows
V2
A
V1
EXAMPLE 1
Fireplace
V1 V2
Height
4 ft 5 ft 10 ft
Vertical Run Up = (Fireplace Height + V1 + V2) = 4 ft. + 5 ft. + 10
ft. = 19 ft.
Vertical Run Down = 0 ft.
Horizontal Run = (H1 + H2) = (5 ft. + 10 ft.) = 15 ft.
Number of Elbows = 3
Effective Length = Vertical Run Up + (2 x Vertical Run Down) +
Horizontal Run + (3 x # of 90° Elbows) + (1.5 x # of 45° Elbows)
Effective Length = 19 ft. + (2 x 0 ft.) + 15 ft. + (3 x 3 Elbows) +
(1.5 x 0 Elbows)
Effective Length = 43 ft.
Page 28
POWER VENT
Figure 42
H1 H2 Elbows Effective
5 ft 10 ft 3
)
Fireplace
Height
4 ft
Vertical Run Up = (Fireplace Height + V1) = (4 ft. + 5 ft.) = 9 ft.
Total Vertical Run Down = 10 ft.
Horizontal Run = (H1 + H2) = (5 ft. + 10 ft.) = 15 ft.
Length
Number of Elbows = 3
43 ft
Effective Length = Vertical Run Up + (2 x Vertical Run Down) +
Horizontal Run + (3 x # of 90° Elbows) + (1.5 x # of 45° Elbows)
Effective Length = 9 ft. + (2 x 10 ft.) + 15 ft. + (3 x 3 Elbows) + (1.5
x 0 Elbows)
Effective Length = 53 ft.
NOTICE: Once vent runs in downward direction it cannot turn
back upward.
NOTICE: If this Power-Vent will be serviced from the rear side
a minimum of 12 inches of vent pipe must be removable to gain
clearance for removal of the rear panel. This can be achieved
with an adjustable pipe that will collapse to clear the Power-Vent
connector flange and then be removed. This can also be achieved
by breaking the connection at the nearest elbow and removing that
section of pipe.
Ensure the sidewall venting clearances are observed. If venting
system is installed below ground, we recommend a window well
with adequate and proper drainage to be installed around the
termination area.
V1
Figure 43
EXAMPLE 2
V1 V2 H1 H2
5 ft 10 ft 10 ft 5 ft
V2
A
Total
Elbows Effective
Length
3 53 ft
43902-0-1021