Lennox SLP98DFV - Page 8

Page 8
TABLE 1
NON-COMBUSTIBLE FLOOR OPENINGSIZE
Cabinet Width
Front to Rear Side to Side
in mm in mm
B Cabinet 17 - 1/2” 19 - 3/4 502 16 - 5/8 422
C Cabinet 21” 19 - 3/4 502 20 - 1/8 511
NOTE - Floor opening dimensions listed are 1/4 inch (6 mm) larger than
the unit opening. See dimension drawing on page 2.
SUPPLY AIR
PLENUM
PROPERLY
SIZED FLOOR
OPENING
FURNACE
FIGURE 8
Installation on Combustible Flooring (Figure 9)
1 - When unit is installed on a combustible oor,
a downow combustible ooring base must be
installed between the furnace and the oor. The
base must be ordered separately. See table 2 for
opening size to cut in oor.
CAUTION
The furnace and combustible ooring base shall not be
installed directly on carpeting, tile, or other combustible
material other than wood ooring.
TABLE 2
COMBUSTIBLE FLOORING BASE OPENING SIZE
Cabinet
Width
Catalog
Number
Front to Rear Side to Side
in mm in mm
B Cabinet
17 - 1/2”
11M60 22 559 18 - 3/4 476
C Cabinet
21”
11M61 22 559 22 - 3/4 578
FURNACE
SUPPLY AIR
PLENUM
COMBUSTIBLE
FLOORING BASE
PROPERLY
SIZED FLOOR
OPENING
FIGURE 9
2 - After opening is cut, set combustible ooring base
into opening.
3 - Check berglass strips on combustible ooring
base to make sure they are properly glued and
positioned.
4 - Lower supply air plenum into combustible ooring
base until plenum anges seal against berglass
strips.
NOTE - Be careful not to damage berglass strips. Check
for a tight seal.
5 - Set the furnace over the plenum.
6 - Ensure that the seal between the furnace and
plenum is adequate.
Installation on Cooling Coil Cabinet (Figure 10)
NOTE - Downow combustible ooring base is not used.
1 - Refer to reverse-ow coil installation instructions for
correctly sized opening in oor and installation of
cabinet.
2 - When cooling cabinet is in place, set and secure
the furnace according to the instructions that are
provided with the cooling coil. Secure the furnace
to the cabinet.
3 - Seal the cabinet and check for air leaks.