Continental BCDV42N Vertical Termination, Example, Formula 1 HT VT Formula 2 HT + VT 40 feet

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VERTICAL TERMINATION
when (HT) < (VT)	Example 3:
Simple venting configurations
FIGURE 9	V2
	FIGURE10
	90°
	90°
45°	H2
	V1
	45°
	H1 90°

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 OFFSETS IN FEET (HT)

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(one 45º elbow + three 90º elbows - 135º)
	= .03(45+90+90+90-135)=5.4
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.

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

For vent configurations requiring more than one 45º and one 90° elbow , the following formulas apply:

Formula 1: HT < VT

Formula 2: HT + VT < 40 feet

W415-0385 / A / 10.02.03