Download ! WARNING - Napoleon Products

14
3.8
HORIZONTAL TERMINATION
(HT) < (VT)
See graph to determine the required vertical
rise VT for the required horizontal run HT.
Simple venting configuration (only one 90° elbow)
39
40
30
REQUIRED
VERTICAL
RISE IN
FEET VT
20
10
0
2.5
5
7.5
10
12.5
15
17.5
20
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 one 90° elbow, the following formulas apply:
Formula 1: HT < VT
Formula 2: HT + VT < 40 feet
Example:
V1 = 3 FT
V2 = 8 FT
VT = V1 + V2= 3 FT + 8 FT = 11 FT
H1 = 2.5 FT
H2 = 2 FT
HR = H1 + H2 = 2.5 + 2 = 4.5 FT
HO = .03 (three 90° elbows - 90°) = .03 (270° - 90°) = 5.4 FT
HT = HR + HO = 4.5 + 5.4 = 9.9 FT
HT + VT = 9.9 + 11 = 20.9 FT
Formula 1:
HT < VT
9.9 < 11
Formula 2:
HT + VT < 40 FT
20.9 < 40
Since both formulas are met, this vent configuration is acceptable.
90°
V2
90°
H1
90°
V1
16.10
W415-0098 / H / 03.19.12
H2