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3" MIN
Termination of Multiple Direct Vent Furnaces
Figure 19
C
V
T
ONCENTRIC
ENT
ERMINATION
Refer to the directions provided with the Concentric Vent Kit
(DCVK) for installation specifications.
S
W
V
K
IDE
ALL
ENT
IT
H orizontal Installation
Ve rtica l Installation
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.
C
D
L
ONDENSATE
RAIN
INES
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
3"MIN
24"MAX
12" MIN SEPARATION
12" MIN TO GRADE OR HIGHEST
ANTICIPATED SNOW LEVEL
Figure 20
& D
T
RAIN
RAP
appropriate drain location in compliance with local and na-
tional 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 national 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.
G
D
I
ENERAL
RAIN
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 fur-
nace 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 following
instructions for your model and installation position.
NOTE: Both sides of the drain trap must be primed
prior to initial furnace start up.
F
S
D
IELD
UPPLIED
RAIN
Drain the furnace and air conditioning coil if applicable, in
compliance with code requirements. In horizontal or
counterflow installations, a field installed rubber coupling
will allow the drain trap to be removed for cleaning. The
drain trap must be primed before initial furnace start up.
When an air conditioning coil drain is connected to the
field supplied furnace drain, it must be vented.
23
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