6
Location
The furnace must be installed on a level surface,
and as close to the center of the air distribution
system as possible. See Table 1 for overall di-
mensions to determine the required clearances
in hallways, doorways, stairs, etc. to allow the
furnace to be moved to the installation point. The
furnace must be installed so that all electrical
components are protected from water.
Minimum clearances to combustible materials
are listed in Table 2. Access for positioning and
servicing must be considered when locating the
unit. 24 inches is the minimum required clearance
for servicing the unit. 30 inches is the minimum
required clearance for positioning the unit. 36
inches is the recommended clearance from the
front of the unit. Please note that a panel or door
can be located such that the minimum clearance
on the rating plate is satisfi ed, but that panel or
door must be removable so as to allow the ap-
propriate clearance.
This furnace is certifi ed for use on wood fl ooring.
The furnace must be installed on a solid surface
and must be level front to back and side to side.
This furnace must not be installed directly on
carpeting, tile, or any combustible material other
than wood fl ooring.
A gas-fi red furnace installed in a residential
garage must be installed so that the bottom of
the burners and igniter are located a minimum
of 18” from the fl oor. The furnace must be lo-
cated or protected to avoid physical damage
by vehicles.
HORIZONTAL INSTALLATIONS
The upfl ow model furnaces are approved for
horizontal installation. Installation Kit #903568
is available for horizontal applications. The
parts may also be fi eld supplied. The parts that
are fi eld supplied should conform to Figures 2
and 3.
CAUTION:
Damage to the product resulting
from failure to follow instructions or
use of unauthorized parts may void
the manufacturer’s product warranty
coverage.
The 90+ upfl ow furnace can be installed hori-
zontally in an attic, basement, crawl space or
alcove. This furnace can be installed horizontally
to the clearances listed in Table 6 on a platform
or on the ceiling rafters. Note that the platform
and the ceiling rafters must be able to support
the weight of the furnace being installed. It can
also be suspended from a ceiling in a basement
or utility room in either a right to left airfl ow or
left to right airfl ow.
When installed horizontally, the furnace must
be raised above the surface to allow a drain
trap to hang vertically below the furnace. This
will allow for proper drainage of the condensate
from the furnace.
Conversion of the iQ Drive Upfl ow Furnace
for a Horizontal Right Installation.
Refer to Figure 2.
1. Remove the hard “J” tube drain trap as-
sembly.
2. Place the 5/8” cap plug over the drain trap
in the header box from which the “J” drain
trap assembly was removed.
3. Remove the piece of soft tubing running
from the in-line drain assembly to the header
box and place a ½” vinyl cap over the drain
tap in the in-line drain assembly.
4. Remove the gray tubing from the pressure
tap on the header box. Remove the ¼” cap
from the pressure tap on the right side of
the header box and place it on the corre-
sponding pressure tap on the opposite of
the header box.
5. Place the gray tubing that was removed,
to the corresponding pressure tap on the
right side of the header box. (Refer to Figure
2)
6. If fi eld supplied parts are used, disconnect
both soft tubes from the hard “J” tube drain
trap after loosing 7/8” clamps. Shorten long
side of the “J” trap by 8-1/2”.
3. A Product-approved vent terminal must
be used, and if applicable, a Product-
approved air intake must be used. In-
stallation shall be in strict compliance
with the manufacturer’s instructions. A
copy of the installation instructions shall
remain with the appliance or equipment
at the completion of the installation.
