Condensate Drain Lines & Drain Trap; General; Upright Installations; Standard Right Or Left Side Drain Hose Connections - Amana GUCA Installation Instructions Manual

X. Condensate Drain Lines
& Drain Trap

GENERAL

A condensing gas furnace achieves its high level of effi-
ciency by extracting almost all of the heat from the products
of combustion and cooling them to the point where conden-
sation 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 unit 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.
WARNING
In upright upflow installations, the drain
trap must be mounted on the opposite side
of the unit from the junction box. This will
reduce the risk of water reaching the
junction box in the event of a blocked drain
condition. Failure to follow these
instructions can result in possible death,
personal injury, or property damage due to
electrical shock.
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 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.

UPRIGHT INSTALLATIONS

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.

Standard Right or Left Side Drain Hose Connections

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.
GREEN
HOSE CLAMPS
QTY: 3
Hose and Tube Identification
1. Remove the rubber plug from the front cover drain port
(right or left side, depending on the intended drain trap
mounting).
2. Secure Hose A to front cover drain port with a red hose
clamp. Route hose to rear side panel grommet hole.
NOTE: For left side drainage, grommets will have to be
relocated to left side panel.
RED HOSE
FRONT COVER
CLAMP
DRAIN PORT
Upright "Standard" Connections
(Upflow Shown, Counterflow Similar)
21
HOSE A
QTY: 1
HOSE B
QTY: 1
TUBE 1
QTY: 1
TUBE 2
QTY: 2
RED
HOSE CLAMPS
QTY: 2
RIGHT SIDE
PANEL
RUBBER ELBOW
DRAIN PORT
RED HOSE CLAMP
HOSE
SIDE PANEL
B
HOSE
GREEN
A
HOSE
CLAMPS
(3 PLACES)
Right Side
RUBBER
ELBOW
TUBE 1
GROMMET
HOLES
TUBE(S) 2
DRAIN
TRAP