Napoleon Fireplaces GDS25P Vertical Termination, V1 H1, 90 H2, Example, when H T V T, Ht + Vt

13

VERTICAL TERMINATION

when (HT) < (VT)	Example 3:
FIGURE 9	FIGURE10	V2

90° H2 90°

45°

45°

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

V1

H1 90°

REQUIRED VERTICAL RISE IN FEET (VT)

150					V1	=5 ft
140
130					V2	=10 ft
120					VT	= V1 + V2 = 5 + 10 = 15 ft
110
					H1	=3 ft
100
90					H2	=2.5 ft
80					HR	= H1 + H2 = 3 + 2.5 = 5.5 ft
70					HO	= .03(one 45º elbow + three 90º elbows - 135º)
60						= .03(45+90+90+90-135)=5.4
50					HT	=HR + HO = 5.5 + 5.4 = 10.9 ft
40
					HT + VT	= 10.9 + 15 = 25.9 ft
30
20					Formula 1:		HT < VT
10
							10.9 < 15
0	5	10	15	20
					Formula 2:		HT + VT < 40 feet
							25.9 < 40
					Since both formulas are met, this vent configuration is
					acceptable.

HORIZONTAL VENT RUN

PLUS OFFSETS IN FEET

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

W415-0547 / C / 07.25.06