Lennox VCFA012S4 Installation Instructions Manual page 7

Model A
VCFA012-024 19-7/8" (505 mm)
VCFA030 31-1/4" (795 mm)
VCFA036-048 42-1/8" (1070 mm)
VCFA054 42-1/8" (1070 mm) 15" (380 mm)
Figure 3. Mounting Bracket Positioning
4. The unit should be installed high enough for a gravity
drain to function properly. If necessary, a fi eld provided
external pump can be installed at the unit. See fi gure 1
for pipe connection locations.
5. Upon confi rming the two brackets are level, correctly
spaced and secured to the wall; lift the unit onto the
brackets. Confi rm the unit is level before continuing.
Ceiling Installation
1. Remove the side panel and the grille. See fi gure 4.
NOTE - Do not remove the grille on VCFA048 or 054
models.
Figure 4. Remove Side Panel and Grille
2. Install four factory-provided mounting bolts by screwing
them into the provided threaded holes in the unit body.
See fi gure 7 for mounting bolt installation locations. The
bolts should only extend from the body a distance which
enables the bracket to engage the bolts and secure the
unit.
3. Make sure that the structural ceiling is able to support
the weight of the unit. It may be necessary to add
support.
A
B
19-7/8" (506 mm)
19-7/8" (506 mm)
17-3/4" (450 mm)
*Do Not
remove grille
on VCFA048
or 054 units
Side panel
Grille*
CONCRETE CEILING
USING ANCHORS
Anchor
Angle iron bolted in
place across wooden
B
joists
Figure 5. Locate Threaded Rods
4. Install suspension
ceiling or concrete slab in a suitable location.
If the structural ceiling is constructed of concrete, install
anchors to accept four suitably sized threaded rods to
suspend the indoor unit. If the structural ceiling includes
wooden joists, use angle iron or Unistrut channel fi xed
securely in place to accept the threaded rods. NOTE -
Threaded rod (requirement of Lennox warranty program)
is the ONLY acceptable method of suspending the unit;
do not use chains or straps. See fi gure 5.
5. Slide one nut and one washer onto each threaded rod.
Use electrical tape to keep the washer from falling off.
Position the nuts slightly above the fi nal resting place of
the suspension brackets.
Threaded rod
Field-provided
isolation grommet
Washer
Leveling nut
Figure 6. Locate Suspension Bracket on Threaded Rod
6. VCFA012-048 units: Afi x the two long suspension
brackets provided in accessory package to the
previously installed threaded rods. See fi gure 6.
VCFA054 units: Afi x the four short suspension
brackets
Install the VCFA054 unit directly onto the threaded rods
as instructed in step 8 and then proceed to step 6. Step
9 will not apply to VCFA054 installation.
7. Slide a washer and then a nut onto each rod below
each suspension bracket. Use the leveling nut (beneath
suspension brackets) to adjust the bracket to the correct
height. Remove the electrical tape holding the upper
washers and nuts in place and tighten each of the four
nuts above the brackets down onto the brackets. This
will ensure that the unit remains level. See fi gure 6.
7
ANGLE IRON
Threaded rod
WOODEN JOISTS
Wooden joist
rods in the
Suspension
bracket
to the unit body. See
Threaded rod
ACROSS
structural
fi gure 7.