Lennox Allied Air A96UH2E Installation Instructions Manual page 13

Right-Hand Discharge
Left End
Air
Flow
Bottom (Floor)**
Left-Hand Discharge
Left End
Air
Flow
Bottom (Floor)**
Top
* Front
Back
Ends
Vent
Floor
* Front clearance in alcove installation must be 24 in. (610
mm). Maintain a minimum of 24 in. (610 mm) for front service
access.
** An 8" service clearance must be maintained below the unit
to provide for servicing of the condensate trap unless the trap
is mounted remotely.
‡ For installations on a combustible floor, do not install
the furnace directly on carpeting, tile or other combustible
materials other than wood flooring.
Figure 18. Installation Clearances
Horizontal Application
Figure 19. Typical Horizontal Application
Suspended Installation of Horizontal Unit
This furnace may be installed in either an attic or a crawl
space. Either suspend the furnace from roof rafters or floor
joists, as shown in Figure 19, or install the furnace on a
507581-04
platform, as shown in Figure 20. A horizontal suspension
kit (51W10) may be ordered from your distributor or use
equivalent.
Right End
Air
NOTE: Heavy-gauge sheet metal straps may be used to
Flow
suspend the unit from roof rafters or ceiling joists. When
straps are used to suspend the unit in this way, support
must be provided for both the ends. The straps must not
interfere with the plenum or exhaust piping installation.
Cooling coils and supply and return air plenums must
be supported separately.
Right End
NOTE: When the furnace is installed on a platform or with
Air
Flow
the horizontal suspension kit in a crawl space, it must be
elevated enough to avoid water damage, accommodate
drain trap and to allow the evaporator coil to drain.
Platform Installation of Horizontal Unit
0
1.
0
0
2.
0
0
0‡
3.
4.
5.
6.
EXHAUST PIPE
*Gas connector may be
used
installation if accept-
able by local authority
having jurisdiction.
Issue 2128
Select location for unit keeping in mind service and
other necessary clearances. See Figure 18.
Construct a raised wooden frame and cover frame
with a plywood sheet. If unit is installed above finished
space, fabricate an auxiliary drain pan to be installed
under unit. Set unit in drain pan as shown in Figure
20. Leave 8 inches for service clearance below unit for
condensate trap.
Provide a service platform in front of unit. When
installing the unit in a crawl space, a proper support
platform may be created using cement blocks.
Route auxiliary drain line so that water draining from
this outlet will be easily noticed by the homeowner.
If necessary, run the condensate line into a condensate
pump to meet drain line slope requirements. The
pump must be rated for use with condensing furnaces.
Protect the condensate discharge line from the pump
to the outside to avoid freezing.
Continue with exhaust, condensate and intake piping
installation according to instructions.
*GAS CONNECTION
INTAKE PIPE
for Canadian
SERVICE PLATFORM
Figure 20.
RAISED
PLATFORM
Page 13 of 60