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Horizontal Venting of Multiple Furnaces
B
F
A. 90º medium radius
D. 12" (30.5 cm) minimum to roof or highest
elbows
anticipated snow level
B. Flue/vent pipes
E. Screens
C. 12" (30.5 cm) minimum
F. 24" (61 cm) maximum, 3" (7.6 cm) minimum
to roof or highest
G. 3" (7.6 cm) minimum
anticipated snow level
H. Combustion air intakes
CONDENSATE DRAIN LINES AND DRAIN TRAP
A condensing gas furnace achieves its high level of efficiency by
extracting almost all of the heat from the products of combustion
and cooling them to the point where condensation takes place.
The condensate which is generated must be piped to an
appropriate drain location.
In upright installations, the furnace's drain hoses may exit either
the right or left side of the furnace.
NOTE: If the alternate vent/flue outlet is utilized in an upright
installation, the drain trap and drain connections must be located
on the same side as the alternate vent/flue outlet.
In horizontal installations, the drain hoses will exit through the
bottom (down side) of the furnace with the drain trap suspended
beneath the furnace. The field-supplied drain system must be in
accordance with all local codes and the instructions in the
following sections.
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 hookups
NOTES:
The drain trap supplied with the furnace must be used.
The drain line between the furnace and drain location must
be constructed of ³⁄₄" (1.9 cm) PVC or CPVC.
The drain line between the furnace and drain location must
maintain a ¹⁄₄" (6.4 mm) 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.
Do not route the drain line outside where it may freeze.
If the drain line is routed through an area which may see
temperatures near or below freezing, precautions must be
taken to prevent the 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.
20
A
B
C
F
G
D
H
E
Concentric Vent Termination
Refer to the directions provided with the Concentric Vent Kit
(DCVK) for installation specifications.
Side Wall Vent Kit
This kit is to be used with 2" or 3" (5.1 cm or 7.6 cm) 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.
NOTE: This kit is not intended for use with single pipe (nondirect
vent) installations.
Refer to the directions furnished with the Side Wall Vent Kit (Part
Number 0170K00000S) for installation specifications
Standard Right or Left Side
Drain Hose Connections
All installation positions require the use of the drain trap, hoses,
tubes and clamps. The following quantity of hoses, tubes, and
hose clamps are provided with the unit.
Hose and Tube Identification
A
H
A. Drain trap
B. Hose A
C. Hose B
D. Tube 2 (2)
Upright Installations—Trap on Right Side
In an upright installation, drain hoses are connected to drain
ports on the rubber elbow and the recuperator coil front cover.
The drain lines are then routed through the right side panel and
into the drain trap secured to the outside of the cabinet.
NOTE: Refer to "Alternate Vent/Flue Hose Connections" for
upright installations using an alternate vent/flue outlet,
1. Remove the rubber plug from the right side of the front cover
drain port.
2. Secure Hose A to the front cover drain port with a red hose
clamp.
3. Route Hose A to the rear side panel grommet hole.
4. Cut and remove ¹⁄₄" (6.4 cm) from the end of the drain port on
the rubber elbow.
5. Insert Tube 1 into the rubber elbow drain port and secure with
the silver hose clamp. Angle Tube 1 outward toward the front
of the furnace.
B
C
D
G
F
E
E. Tube 1
F. Red hose clamp (1)
G. Silver hose clamp (1)
H. Green hose clamps (3)
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