Horizontal Applications & Considerations; Furnace Suspension; Front Cover Pressure Switch Tube Location; Drain Trap And Lines - Maytag Amana MEC96 Series Installation Instructions Manual

Recommended Installation Positions
*MEC96 models may be installed upflow or horizontally with
left or right side down. *CEC96 models may be installed
down flow or horizontally with left or right side down. 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 ductwork 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
compartment). NOTE: Ductwork must never be attached to
the back of the furnace. Refer to "Recommended Installa-
tion Positions" figure for appropriate installation positions,
ductwork connections, and resulting airflow arrangements.
Horizontal Applications & Considerations
When installing a furnace horizontally, additional consideration
must be given to the following:

Furnace Suspension

If suspending the furnace from rafters or joists, use 3/8" thread-
ed rod and 2"x2"x1/8" angle iron as shown in the following
diagram. The length of rod will depend on the application and
the clearances necessary.
If the furnace is installed in a crawl space it must be sus-
pended from the floor joist or supported by a concrete pad.
Never install the furnace on the ground or allow it to be
exposed to water.
2" 2" 3/8"
ANGLE IRON
X X
(3 )
PLACES

Front Cover Pressure Switch Tube Location

When a furnace is installed horizontally with left side down,
the front cover pressure switch tube must be re-locaed to
he lower port of the collector box cover.
1. Remove tubefrom front cover pressure switch and
collector box cover.
2. Remove rubber plug from bottom collector box port
and install on top of collector box port.
3. Locate 24'' x 1/4'' tube in bag assembly.
4. Install one end on front cover pressure switch.
5. Route tube to lower port on collector box cover and
cut off excess tubing.
Figure 2

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 5.5" 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 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.

Horizontal Furnace Leveling

Leveling ensures proper condensate drainage from the heat
exchanger. For proper flue pipe drainage, the furnace must be
level lengthwise from end to end. The furnace should have a
slight tilt from back to front with the access doors downhill
from the back panel approximately 1/2 to 3/4 inches. The
slight tilt allows the heat exchanger condensate, generated in
the recuperator coil, to flow forward to the recuperator coil
front cover.

Alternate Electrical and Gas Line Connections

This furnace has provisions allowing for electrical and gas line
connections through either side panel. In horizontal applica-
tions the connections can be made either through the "top" or
"bottom" of the furnace.

Drain Pan

A drain pan must be provided if the furnace is installed above
a conditioned area. The drain pan must cover the entire area
under the furnace (and air conditioning coil if applicable).

Freeze Protection

Refer to Horizontal Applications and Conditions - Drain
Trap and Lines.

Propane Gas/High Altitude Installations

P
OSSIBLE PROPERTY DAMAGE
OCCUR IF THE CORRECT CONVERSION KITS ARE NOT INSTALLED
APPROPRIATE KITS MUST BE APPLIED TO ENSURE SAFE AND PROPER
. A
FURNACE OPERATION LL CONVERSIONS MUST BE PERFORMED BY A
QUALIFIED INSTALLER OR SERVICE AGENCY
This furnace is shipped from the factory configured for natural
gas at standard altitude. Propane gas installations require an
orifice and spring change to compensate for the energy con-
tent difference between natural and propane gas.
High altitude installations may require both a pressure
switch and an orifice/spring change. These changes are
necessary to compensate for the natural reduction in the
density of both the gas fuel and the combustion air at higher
altitude. For furnaces being converted to LP gas, it is strong-
ly recommended that a LPLP03 kit also be installed. The use
of this kit will prevent the furnace from firing when the LP
gas supply pressure is too low to support proper combustion.
11
WARNING
,
PERSONAL INJURY OR DEATH MAY
.
. T
HE