Napoleon Fireplaces GDS26P, GDS26N manual Top Exit / Horizontal Termination

10

TOP EXIT / HORIZONTAL TERMINATION

(HT) > (VT)		Example 2:
Simple venting configuration	FIGURE 9	V1	= VT	= 6 ft
(only one 90° elbow)		H1	= 3 ft
		H2	= 5 ft
		HR	= H1	+ H2 = 3 + 5 = 8 ft
		HO	= .03(two 90° elbows - 90°) = .03(180° - 90°) = 2.7 ft
		HT	= HR + HO = 8 + 2.7 = 10.7 ft
		HT	+ VT= 10.7 + 6 =16.7
		Formula 1:		HT < 4.2 VT
				4.2 VT = 4.2 x 6 = 25.2 ft
				10.7 < 25.2

Formula 2: HT + VT < 24.75 feet 16.7 < 24.75

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

Example 3:

See graph to determine the required vertical rise VT for the										H3
required horizontal run HT.
	150									90°
REQUIRED	140									H4
VERTICAL	130									V2
RISE IN	120
INCHES	110
VT							V1		H1	H2
	100
		90
		80
		70								FIGURE 11
		60
		50
		40
		30					V1		= 4 ft
		20					V2		= 1.5 ft
		10					VT		= V1 + V2 = 4 + 1.5 = 5.5 ft
		0	5	10	15	20	H1		= 2 ft
							H		= 1 ft
HORIZONTAL VENT RUN PLUS OFFSET IN FEET HT
							H32		= 1 ft
The shaded area within the lines represents acceptable							H4		= 1.5 ft
values for HT and VT .							HR		= H1 + H2 + H3 + H4 = 2 + 1 + 1 + 1. 5 = 5.5 ft
							HO		= .03(four 90° elbows - 90°) = .03(360° - 90°) = 8.1 ft
For vent configurations requiring more than one 90° elbow							HT		= HR + HO = 5.5 + 8.1 = 13.6 ft
the following formulas apply:							HT	+ VT = 13.6 + 5.5 = 19.1 ft
Formula 1: HT		< 4.2 VT					Formula 1: HT			< 4.2 VT
Formula 2: HT		+ VT < 24.75 feet								4.2 VT = 4.2 x 5.5 = 23.1 ft
		90°							13.6 < 23.1
							Formula 2: HT			+ VT < 24.75 feet
									19.1 < 24.75

V	1	H1	H2	Since both formulas are met, this vent configuration is
			FIGURE10	acceptable.

W415-0607 / A / 01.18.08