Vertical Flue Venting Requirements - Mendota DXV-60 Installation & Operating Instructions Manual

NATURAL GAS REQUIREMENT: A minimum 1 foot vertical section is required directly on top of fireplace.
L.P. GAS REQUIREMENT: A minimum 2 foot vertical section is required directly on top of fireplace.
TOTAL VENT RUN: (X+Y+Z) must not exceed 40 feet.
TOTAL HORIZONTAL VENT RUN (X) must not exceed 12 feet.
• No more than three 90° elbows may be used per run. (Two 45° elbows = one 90° elbow)
• A minimum 1 foot section must be installed between 90° elbows.
• Every additional 90° elbow (after the 1
• Every additional 45° elbow reduces total allowed horizontal run by 1 foot.
HIGH ALTITUDE INSTALLATION INFORMATION: Prior to installing at altitudes higher than 7500, please con-
tact the Mendota technical service department for specific venting requirements and venting restrictions.

VERTICAL FLUE VENTING REQUIREMENTS

Y-VERTICAL RISE
(pipe length from top of fireplace)
1 FT MINIMUM (NAT GAS)
2 FT MINIMUM (LP GAS)
3 FT.
4 FT.
5 FT.
28 FT.
30 FT.
32 FT.
34 FT.
36 FT.
38 FT.
40 FT.
st
X-HORIZONTAL RUN
(pipe length from elbow)
0 TO 4 FT.
0 TO 8 FT.
0 TO 12 FT.
0 TO 10 FT.
0 TO 8 FT.
0 TO 6 FT.
0 TO 4 FT.
0 TO 2 FT.
0 TO 1 FT.
0 FT.
x
Y
elbow) reduces total allowed horizontal run by 2 feet.
13
0 TO 1 FT.
0 TO 2 FT.
z