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Vent/Intake Terminations For Installation Of Multiple Direct Vent Furnaces; Concentric Vent Termination; Side Wall Vent Kit; Condensate Drain Lines And Drain Trap - Whirlpool WGFM29 Installation Instructions Manual

93% and 95% 2-stage variable-speed gas furnace
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Alternate Horizontal Terminations (Dual Pipe)—Above
Highest Anticipated Snow Level
G
F
E
A. 90º medium radius elbow
B. Flue/vent pipe
C. 24" (61 cm) maximum, 3"
(7.6 cm)
In a basement installation, the vent/flue pipe can be run
between joist spaces.
NOTE: If the vent pipe must go below a 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.
Vent/Intake Terminations for Installation of
Multiple Direct Vent Furnaces
If more than one direct vent furnace is to be installed vertically
through a common roof top, maintain the same minimum
clearances between the exhaust vent and air intake terminations
of adjacent furnaces as with the exhaust vent and air intake
terminations of a single furnace.
If more than one direct vent furnace is to be installed horizontally
through a common side wall, maintain the clearances as shown
in "Horizontal Venting of Multiple Furnaces" illustration. Always
terminate all exhaust vent outlets at the same elevation and
always terminate all air intakes at the same elevation.
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)
to roof or highest
minimum
anticipated snow level
G. 3" (7.6 cm) minimum
H. Combustion air intakes
A
B
D
C
D. Combustion air intake
E. 12" (30.5 cm) minimum to roof or
highest anticipated snow level
F. 24" (61 cm) maximum radius
G. Screen
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
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.
19

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