Installation Positions; Horizontal Applications & Considerations; General; Drain Trap And Lines - Amana GUCA Installation Instructions Manual

VI. Installation Positions
This furnace may be installed in an upright position or
horizontal on either the left or right side panel. Do not install
this furnace on its back. For upright upflow furnaces, return
air ductwork may be attached to the side panel(s) and/or
basepan. For horizontal upflow furnaces, return air duct-
work must be attached to the basepan. For both upright or
horizontal counterflow furnaces, return ductwork must be
attached to the basepan (top end of the blower compart-
ment). NOTE: Ductwork must never be attached to the
back of the furnace. Refer to the product Specifications
Sheet for proper airflow requirements and number of re-
quired ductwork connections. Refer to "Recommended
Installation Positions" figure for appropriate installation
positions, ductwork connections, and resulting airflow ar-
rangements.
VII. Horizontal Applications
& Considerations

GENERAL

Horizontal applications, in particular, may dictate many of
the installation's specifics such as airflow direction, duct-
work connections, flue and combustion air pipe connec-
tions, etc. The basic application of this furnace as a
horizontal furnace differs only slightly from an upright
installation. When installing a furnace horizontally, addi-
tional consideration must be given to the following:
ALTERNATE VENT/FLUE
AND COMBUSTION AIR
INTAKE LOCATIONS
GAS LINE WITH
DRIP LEG (3" MINIMUM)
DRAIN PAN
FURNACE MUST BE SUPPORTED
AT BOTH ENDS AND MIDDLE
Horizontal Furnace

DRAIN TRAP AND LINES

In horizontal applications the condensate drain trap is
secured to the furnace side panel, suspending it below the
furnace. A minimum clearance of 4 3/4 inches below the
furnace must be provided for the drain trap. Additionally,
the appropriate downward piping slope must be maintained
from the drain trap to the drain location. Refer to Section X,
Condensate Drain Trap and Lines for further details. If the
drain trap and drain line will be exposed to temperatures
near or below freezing, adequate measures must be taken
to prevent condensate from freezing.
FURNACE MUST BE LEVEL
FROM END TO END
FURNACE MUST BE LEVEL
OR SLIGHTLY TILTED FORWARD
WITH THE DOORS 0" - 3/4"
BELOW THE BACK PANEL
4 3/4" MINIMUM
DRAIN TRAP
CLEARANCE
DRAIN LINE WITH 1/4" PER FOOT
DOWNWARD SLOPE
36" MINIMUM SERVICE
CLEARANCE REQUIRED

LEVELING

Leveling ensures proper condensate drainage from the
heat exchanger and induced draft blower. For proper flue
pipe drainage, the furnace must be level lengthwise from
end to end. The furnace should also be level from back to
front or have a slight tilt with the access doors downhill
(approximately 3/4 inches) from the back panel. The slight
tilt allows the heat exchanger condensate, generated in the
recuperator coil, to flow forward to the recuperator coil front
cover.
ALTERNATE VENT/FLUE AND COMBUSTION AIR
CONNECTIONS
In horizontal installations provisions for alternate flue and
combustion air piping are available for upflow furnaces with
left discharge and counterflow furnaces with right air dis-
charge. In these positions the flue and combustion air
piping can be run vertically through the side of the furnace.
Refer to the "Recommended Installation Positions" figure
for further detail. The standard piping connections may
also be used in these positions. Refer to Section IX, Vent/
Flue Pipe and Combustion Air Pipe for details concerning
the conversion to the alternate vent/flue and combustion air
connections.
AIR
ALTERNATE FLUE AND
DISCHARGE
COMBUSTION AIR PIPE
LOCATIONS
Side Side
Return Return
Duct
Duct
Connection
Connection
Bottom
Return
Duct
Connection
UPFLOW
UPRIGHT
ALTERNATE FLUE AND
COMBUSTION AIR PIPE
LOCATIONS
Bottom
Return
AIR
DISCHARGE
Connection
UPFLOW HORIZONTAL
LEFT AIR DISCHARGE
Bottom
Return
Duct
Connection
UPFLOW HORIZONTAL
RIGHT AIR DISCHARGE
Recommended Installation Positions
NOTE: Alternate "vertical" piping connections can not be
used when an upflow furnace is installed with supply air
discharging to the right, or when a counterflow furnace is
installed with supply air discharging to the left. In either case,
use the standard flue and combustion air piping connections.
12
ALTERNATE FLUE AND
Bottom
COMBUSTION AIR PIPE
Return
LOCATIONS
Duct
Connection
AIR
DISCHARGE
COUNTERFLOW
UPRIGHT
Bottom
Return
Duct
Duct
Connection
COUNTERFLOW HORIZONTAL
RIGHT AIR DISCHARGE
AIR
AIR
DISCHARGE
DISCHARGE
COUNTERFLOW HORIZONTAL
LEFT AIR DISCHARGE
ALTERNATE FLUE AND
COMBUSTION AIR PIPE
LOCATIONS
AIR
DISCHARGE
Bottom
Return
Duct
Connection