F55: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
6
A07571
Fig. 8 – Drain Pan Support Bracket
A07567
Fig. 9 – Mobile Home or Manufactured Housing Applications
Air Ducts
Connect supply-air duct over the outside of ¾" (19 mm) flanges
provided on supply-air opening. Secure duct to flange, using proper
fasteners for type of duct used, and seal duct-to-unit joint. If return-air
flanges are required, install factory-authorized accessory kit.
Use flexible connectors between ductwork and unit to prevent
transmission of vibration. Ductwork passing through unconditioned
space must be insulated and covered with vapor barrier.
If the appliance is connected via an air duct system to one or more
rooms, the supply and return air shall be directly ducted to the space.
Open areas such as false ceilings shall not be used as a return air duct.
Any auxiliary devices installed in the ductwork should be approved by
the manufacturer or declared suitable with the R-454B refrigerant.
Ductwork Acoustical Treatment
Metal duct systems that do not have a 90° elbow and 10 feet of main
duct before first branch takeoff may require internal acoustical insulation
lining. As an alternative, fibrous ductwork may be used if constructed
and installed in accordance with the latest edition of SMACNA
construction standard on fibrous glass ducts. Both acoustical lining and
fibrous ductwork shall comply with National Fire Protection Association
as tested by UL Standard 181 for Class 1 air ducts.
Electrical Connections
Units from the factory protect the low voltage circuit with a 3A
automotive type fuse in-line on the wire harness. Motor speeds and time
delay function are built into the motor. See (Minimum CFM and Motor
Speed Selection on p8) for clarification.
When a factory-approved accessory control package has been installed,
check all factory wiring per unit wiring diagram and inspect factory
wiring connections to be sure none were loosened during transit or
installation. If a different control package is required, see unit rating
plate.
Before proceeding with electrical connections, make certain that supply
voltage, frequency, phase, and ampacity are as specified on the unit
rating plate. See unit wiring label for proper field high- and low-voltage
wiring. Make all electrical connections in accordance with the NEC and
any local codes or ordinances that may apply. Use copper wire only.
The unit must have a separate branch electric circuit with a
field-supplied disconnect switch located within sight from, and readily
accessible from, the unit.
On units with a factory-installed disconnect with pull-out removed,
service and maintenance can be safely performed on only the load side
of the control package.
WARNING
!
EXPLOSION AND PERSONAL HEALTH HAZARD
Failure to follow this warning could result in personal injury, death,
and/or unit damage.
Ensure to keep any required ventilation openings clear of obstruction.
Air ducts connected to the appliance shall not contain a POTENTIAL
IGNITION SOURCE.
Auxiliary devices which may be a POTENTIAL IGNITION SOURCE
shall not be installed in the duct work. Examples of such POTENTIAL
IGNITION SOURCES are hot surfaces with a temperature exceeding
1292°F (700°C) and electric switching devices. Ensure only
manufacturer approved auxiliary devices are installed.
CAUTION
!
Units may contain plastic plugs for the high and low voltage electrical
connection. These plugs should only be removed when these ports are
used for install or servicing and should be discarded after removal.
WARNING
!
PERSONAL OR EQUIPMENT DAMAGE HAZARD.
Failure to follow this warning could result in personal injury, death,
and/or unit damage.
Provide training to installation personnel to follow national and local
electrical codes.
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