18
Termination of Multiple Direct Vent Furnaces
Figure 19
3” MIN
12” MIN TO GRADE OR HIGHEST
ANTICIPATED SNOW LEVEL
3”MIN
24”MAX
12” MIN SEPARATION
C
ONCENTRIC
V
ENT
T
ERMINATION
Refer to the directions provided with the Concentric Vent Kit
(DCVK) for installation specifications.
S
IDE
W
ALL
V
ENT
K
IT
This kit is to be used with 2” or 3” direct vent systems. The
vent kit must terminate outside the structure and may be
installed with the intake and exhaust pipes located side-by-
side or with one pipe above the other. These kits are
NOT
intended for use with single pipe (indirect vent) installations.
Refer to the directions furnished with the Side Wall Vent
Kit (p/n 0170K00000S or 0170K00001S) for installation
specifications.
Ve rtica l Insta llation
H orizontal Installation
Side Wall Vent Kit
Figure 20
C
ONDENSATE
D
RAIN
L
INES
& D
RAIN
T
RAP
A condensing gas furnace achieves its high level of efficiency
by extracting heat from the products of combustion to the
point where condensation takes place. The condensate must
be collected in the furnace drain trap and routed to an
appropriate drain location in compliance with local and
national codes.
Follow the bullets listed below when installing the drain
system. Refer to the following sections for specific details
concerning furnace drain trap installation and drain hose hook
ups.
•
The drain trap supplied with the furnace must be
used.
•
The drain trap must be primed at time of
installation.
•
The drain line between furnace and drain location
must meet local and nation codes.
•
The drain line between furnace and drain location
must maintain a 1/4 inch per foot downward slope
toward the drain.
•
Do not trap the drain line in any other location than at
the drain trap supplied with the furnace.
•
If the drain line is routed through an area which may
see temperatures near or below freezing, precautions
must be taken to prevent condensate from freezing
within the drain line.
•
If an air conditioning coil is installed with the furnace,
a common drain may be used. An open tee must be
installed in the drain line, near the cooling coil, to
relieve positive air pressure from the coil’s plenum.
This is necessary to prohibit any interference with the
function of the furnace’s drain trap.
NOTE:
In vertical installations, air conditioning coil
condensate may drain into the furnace trap as long as there
is a trap between the coil and the furnace trap and the drain
pipe is not terminating below the water level of the furnace
trap.
#3
#1
#2
#4
#5
#6
#7
#8
#9
#10
#11
100 Degree
Elbow
Coupling
Figure 21
NOTE:
Drain components shown for information purposes only.
G
ENERAL
D
RAIN
I
NFORMATION
All furnace models come with a factory installed drain trap.
For vertical installations, the trap will remain in the factory
position except for a counterflow when the installer desires
the drain to exit the right side. All furnace models installed
horizontally require the trap to be relocated. Many drain hoses
have a built–in grommet which will provide a cabinet seal
when installed. See instructions below for your model and
installation position.
NOTE: Both sides of the drain trap
must be primed prior to initial furnace start up
