Napoleon Fireplaces BGD36NTR, BGD36PTR manual TOP or Rear Exit Vertical Termination

13

TOP OR REAR EXIT VERTICAL TERMINATION

when (HT) < (VT)

Simple venting configurations

FIGURE 15

See graph to determine the required vertical rise VT for the required horizontal run HT.

REQUIRED

VERTICAL RISE

IN FEET

VT

HORIZONTAL VENT RUN PLUS OFFSET IN FEET HT

The shaded area within the lines represents acceptable values for HT and VT .

For vent configurations requiring more than zero 90° elbow (top exit) or one 90° elbow (rear exit), the following formu- las apply:

Example 6:

FIGURE 16	V2
	90°
	H2
	90°
	V1
	H1
	90°

V1	=5 ft
V2	=10 ft
VT	= V1 + V2 = 5 + 10 = 15 ft
H1	=3 ft
H2	=2.5 ft
HR	= H1 + H2 = 3 + 2.5 = 5.5 ft
HO	= .03(three 90° elbows - 90°)
	= .03(90 + 90 + 90 - 90) = 5.4 ft
HT	= HR + HO = 5.5 + 5.4 = 10.9 ft
HT + VT	= 10.9 + 15 = 25.9 ft

Formula 1: HT < VT 10.9 < 15

Formula 2: HT + VT < 40 feet 25.9 < 40

Since both formulas are met, this vent configuration is ac- ceptable.

Formula 1: HT < VT

Formula 2: HT + VT < 40 feet

W415-0210 / E / 06.25.03