Napoleon Fireplaces GD82NT-T, GD82PT-T TOP EXIT / HORIZONTAL TERMINATION

7
W415-0583 / D / 07.24.07
H2
H1
V190°
See graph to determine the required verti-
cal rise VT for the required horizontal run
HT.
V1 = VT = 6 ft
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: H
T < 4.2 VT
4.2 VT = 4.2 x 6 = 25.2 ft
10.7 < 25.2
Formula 2: H
T + VT < 24.75 feet
16.7 < 24.75
Since both formulas are met, this vent confi guration is ac-
For vent confi gurations requiring more than one 90�� elbow the
following formulas apply:
Formula 1: HT < 4.2 VT
Formula 2: HT + VT < 24.75 feet
Example 2:
ceptable.
Example 3:
V1 = 4 ft
V2 = 1.5 ft
VT = V1 + V2 = 4 + 1.5 = 5.5 ft
H1 = 2 ft
H2 = 1 ft
H3 = 1 ft
H4 = 1.5 ft
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
HT = HR + HO = 5.5 + 8.1 = 13.6 ft
HT + VT = 13.6 + 5.5 = 19.1 ft
Formula 1: H
T < 4.2 VT
4.2 VT = 4.2 x 5.5 = 23.1 ft
13.6 < 23.1
Formula 2: H
T + VT < 24.75 feet
19.1 < 24.75
FIGURE 6
FIGURE 7
REQUIRED
VERTICAL
RISE IN
INCHES
VT
HORIZONTAL VENT RUN PLUS OFFSET IN FEET HT
FIGURE 8
H2
H4
V2
90°
H3
H1
V1
90°
The shaded area within the lines represents acceptable
values for HT and VT .
when (HT) > (VT)
Simple venting confi guration (only one 90° elbow)
TOP EXIT / HORIZONTAL TERMINATION