Vent /Intake Terminations For Installation Of Multiple Direct Vent Furnaces; Concentric Vent Termination; Side Wall Vent Kit; Condensate Drain Lines & Drain Trap - Goodman GMH95 Installation Instructions Manual

12" Min.
Screen
24" Max.
12" Min. Above
Highest Anticipated
Snow Level
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 clear-
ances between 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
following 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.
S W V K
IDE ALL ENT 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. This kit is NOT intended for use with single pipe
(indirect vent) installations.
Refer to the directions furnished with the Side Wall Vent Kit (p/n
0170K00000S) for installation specifications.
90°
Vent
Medium Radius
Elbow
24" Max.
3" Min.
Air Intake
(Dual Pipe)
F I M
OR NSTALLATION OF ULTIPLE
Vents
90°
Medium
Radius
Elbows
3" Min.
24" Max.
3" Min.
24" Max.
3" Min.
Screen
X. COND X. CO X. CO ND ND NDENSA ENSA ENSA ENSATE DRAIN LINES & DRAIN TRAP TE DRAIN LINES & DRAIN TRAP TE DRAIN LINES & DRAIN TRAP TE DRAIN LINES & DRAIN TRAP
X. CO X. CO ND ENSA TE DRAIN LINES & DRAIN TRAP
G
ENERAL
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 appropri-
ate 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 unit with the drain trap suspended be-
neath the furnace. The field-supplied drain system must be in
accordance with all local codes and the instructions in the follow-
ing sections.
Follow the bullets listed below when installing the drain system.
Refer to the following sections for specific details concerning fur-
nace drain trap installation and drain hose hook ups.
• The drain trap supplied with the furnace must be used.
• The drain line between furnace and drain location must
be constructed of 3/4" PVC or CPVC.
• 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.
• 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 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.
U I
PRIGHT NSTALLATIONS
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 or left side panel and into the
drain trap secured to the outside of the cabinet.
NOTE: Refer to Section X, Condensate Drain Lines and Drain Trap
- Alternate Vent/Flue Hose Connections for upright installations
using an alternate vent/flue outlet.
S R L
TANDARD IGHT OR EFT
Upright installations using the standard vent/flue outlet require drain
hoses to be connected as follows. The following quantity of hoses,
tubes, and hose clamps are provided with the unit.
Hose and Tube Identification
18
S D H C
IDE RAIN OSE ONNECTIONS