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Installation—Mechanical
Installing the Unit
Follow the procedures below to install the unit properly.
Refer to
"Dimensions and Weights, " page 15
unit dimensions and mounting hole locations.
Note: Any modifications, additions or changes to the
control box could void the factory warranty and UL
certification. Such modification, additions or
changes will become the responsibly of the
modifying contractor.
Vertical Units
NOTICE:
Electrical Wiring!
Do not allow electrical wire to fall between the unit and
installation surface. Failure to comply may result in
electrical shorts or difficulty accessing wires.
Note: Any modifications, additions or changes to the
control box could void the factory warranty and UL
certification. Such modification, additions or
changes will become the responsibly of the
modifying contractor.
Install vertical units in an upright position using the 5/8-
inch diameter double key slot hanger holes or 5/8-inch bolt
holes, located on the back of unit. The hanger holes allow
a maximum shank size of 5/16-inch diameter threaded
rods or lag screws (installer provides).
1. Prepare wall openings for recessed units. Reference
unit submittal for each unit size dimensions. When
installing vertical units, consideration should be given
for units with an outside air intake.
2. If the unit has leveling legs, adjust them correctly to
level unit.
3. Mark the position of the hanger holes on the wall
according to the dimensions given in
Weights, " page 12
for each unit model and size. Align
the hole locations evenly.
4. Insert the threaded rods or lag screws in the wall before
setting the unit in place.
5. Remove the front panel (cabinet unit only) by lifting it
upward.
6. Position the hanger holes, located on the back of the
unit, over the rod or lag screw heads, pushing the unit
downward to properly position.
7. Complete piping and wiring connections, in addition to
any necessary ductwork to the unit as instructed in the
following sections. Ensure that the auxiliary drain pan
is in position on fan-coil units.
8. Install the front panel before starting the unit.
On cabinet units, replace the front panel by aligning the
bottom tabs on the unit with the respective slots on the
panel bottom. Slide the front panel down onto the tabs
52
while holding the panel close as possible to the cabinet.
While the bottom tabs are engaged, slide the front panel
upward enough to allow the top engaging edge of the front
panel to lap over the engaging edge of the unit. This
for specific
should allow the panel to drop down and lock into
position.
On recessed units, install the front panel by aligning and
locking together the interlocking support channel of the
panel and unit. While holding the panel against the unit,
tighten the screws at the top of the panel until it fits tight
against the unit's front. Do not over tighten the screws.
Motor Overload!
All unit panels and filters must be in place prior to unit
startup. Failure to have panels and filters in place may
cause motor overload.
Horizontal Units
Install horizontal units suspended from the ceiling using
the four 5/8-inch diameter double key slot hanger holes or
the 5/8-inch bolt holes located on the top of the unit. The
hanger holes allow a maximum shank size of
5/16-inch diameter threaded rods or lag screws (installer
provided). Follow the installation procedure below.
Note: Follow the requirements of National Fire Protection
1. Prepare the ceiling opening for recessed units.
2. Position and install the suspension rods or a
3. On cabinet units, remove the bottom panel by using a
"Dimensions and
4. Level the unit by referencing the chassis end panels.
5. Complete piping and wiring connections, in addition to
6. Install the bottom panel before starting the unit.
7. Ensure condensate drain line is pitched one inch per
NOTICE:
Association (NFPA) Standard 90A or 90B,
concerning the use of concealed ceiling spaces as
return air plenums.
Reference the unit submittals for dimensions.
suspension device (supplied by installer) according to
the unit model and size in
page
12.
5/32-inch Allen wrench to unscrew fasteners. Swing
the panel down and lift outward.
Adjust the suspension device.
any necessary ductwork as instructed in the following
sections. Ensure that the auxiliary drain pan is in
position on fan-coil units.
ten feet of pipe away from the fan-coil unit.
"Dimensions and Weights, "
UNT-SVX07E-EN
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