Vent /Intake Terminations For Installation Of Multiple Direct Vent Furnaces; Oncentric Ent Ermination - Goodman GMV95 Installation Instructions Manual

V /F C
ENT LUE AND OMBUSTION
The vent/flue and combustion air pipes may terminate vertically, as
through a roof, or horizontally, as through an outside wall.
Vertical pipe terminations should be as shown in the following fig-
ure. Refer to Section IX, Vent/Flue Pipe and Combustion Pipe -
Termination Locations for details concerning location restrictions.
The penetrations through the roof must be sealed tight with proper
flashing such as is used with a plastic plumbing vent.
COMBUSTION
AIR INTAKE
12" MIN.
12" MIN.
TO ROOF OR
SCREEN
HIGHEST
ANTICIPATED
SNOW LEVEL
Vertical Terminations (Dual Pipe)
Horizontal terminations should be as shown in the following figure.
Refer to Section IX, Vent/Flue Pipe and Combustion Pipe - Termi-
nation Location for location restrictions. A 2 3/8 inch diameter wall
penetration is required for 2" diameter pipe while a 3 1/2 inch diam-
eter hole is required for 3" diameter pipe. To secure the pipe pass-
ing through the wall and prohibit damage to piping connections, a
coupling should be installed on either side of the wall and solvent
cemented to a pipe connecting the two couplings. The pipe length
should be the wall thickness plus the depth of the socket fittings to
be installed on the inside and outside of the wall. The wall penetra-
tion should be sealed with silicone caulking material.
3" MIN
24" MAX
Standard Horizontal Terminations (Dual Pipe)
24" MAX
INTAKE
Alternate Horizontal Vent Termination (Dual Pipe)
A P T
IR IPE ERMINATIONS
VENT/FLUE
12" MIN
3" MIN
24" MAX
12" MIN.
TO ROOF OR
HIGHEST
ANTICIPATED
SNOW LEVEL
12" MIN.
TO ROOF OR
HIGHEST
ANTICIPATED
SNOW LEVEL
90°
MEDIUM
RADIUS
ELBOW
24" MAX
3" MIN
AIR
12" MIN. ABOVE
HIGHEST ANTICIPATED
SNOW LEVEL
3" MIN.
24" MAX.
SUPPORT
STRAPS
COMBUSTION
AIR INTAKE.
SCREEN
HIGHEST ANTICIPATED
Standard Horizontal Terminations Above Anticipated Snow
Level (Dual Pipe)
Alternate Vent Termination Above Anticipated Snow Level
In a basement installation, the pipes may be run between the joist
spaces. If the pipes must go below the joist and then up into the last
joist space to penetrate the header, two 45° elbows should be used
to reach the header rather than two 90° elbows.
V /I T
ENT NTAKE ERMINATIONS
D V F
IRECT ENT URNACES
If more than one direct vent furnace is to be installed vertically through
a common roof top, maintain the same minimum clearances be-
tween the exhaust vent and air intake terminations of adjacent units
as with the exhaust vent and air intake terminations of a single unit.
If more than one direct vent furnace is to be installed horizontally
through a common side wall, maintain the clearances as in the fol-
lowing figure. Always terminate all exhaust vent outlets at the same
elevation and always terminate all air intakes at the same elevation.
24" Max.
Horizontal Venting Of Multiple Units
C V T
ONCENTRIC ENT ERMINATION
Refer to the directions provided with the Concentric Vent Kit (DCVK)
for installation specifications.
18
12" MIN
12" MIN.
VENT/FLUE
TEE
12" MIN. ABOVE
HIGHEST ANTICIPATED
SNOW LEVEL
12" MIN. ABOVE
SNOW LEVEL
(Dual Pipe)
F I
OR NSTALLATION OF
Vents
90°
Medium
Radius
Elbows
3" Min.
24" Max.
3" Min.
24" Max.
3" Min.
Screen
12" Min.
12" MIN. ABOVE
HIGHEST ANTICIPATED
SNOW LEVEL
M
ULTIPLE