Page 3 of 18
Issue 1324
507120-01
Requirements
These instructions are intended as a general guide and
do not supersede local or national codes in any way.
Consult authorities having jurisdiction before installation.
Compliance with all local, state, or national codes pertaining
to this type of equipment should be determined prior to
installation. Read this instruction manual, as well as the
instructions supplied in separate equipment, before starting
the installation.
In addition to conforming to manufacturer’s installation
instructions and local municipal building codes, installation
of Allied air handler units (with or without optional electric
heat), MUST conform with National Fire Protection
Association (NFPA) standards: “Standard for Installation of
Air Conditioning and Ventilation Systems” (NFPA No. 90A)
and “Standard for Installation of Residence Type Warm Air
Heating and Air Conditioning Systems” (NFPA No. 90B).
All models are designed for indoor installation only. The
installation of the air handler, field wiring, duct system,
etc. must conform to the requirements of the National
Electrical Code, ANSI/NFPA No. 70 (latest edition) in the
United States, and any state laws, and local ordinances
(including plumbing or wastewater codes). Local authorities
having jurisdiction should be consulted before installation
is made. Such applicable regulations or requirements take
precedence over the general instructions in this manual.
Install the conditioned air plenum, ducts and air filters
(not provided) in accordance with NFPA 90B Standard for
the Installation of Warm Air Heating and Air-Conditioning
Systems (latest edition).
The air handler is shipped from the factory completely
assembled. The unit is provided with flanges for the
connection of the duct system.
Do not remove the cabinet knockouts until it has been
determined which knockouts will need to be removed for
the installation.
Select the final air discharge position which best suits the site
conditions. Consider required clearances, space, routing
requirements for refrigerant line, condensate disposal, filters,
duct system, wiring, and accessibility for service. Refer to
the air handler rating plate on the air handler for specific
information.
NOTES:
During cooling operation, excessive sweating may occur if
the air handler is installed in a very humid space.
If installed in an unconditioned space, sealant should be
applied around the electrical wires, refrigerant tubing, and
condensate lines where they enter the cabinet.
Electrical wires should be sealed on the inside where they
exit the conduit opening. Sealant is required to prevent air
leakage into, and condensate from forming inside of, the
air handler, the control box, and on the electrical controls.
This unit is approved for installation clearance to combustible
material as stated on the unit rating plate. Accessibility and
service clearances must take precedence over combustible
material clearances.
The air handler must be installed so that free access is
allowed to the coil/filter compartment and blower/control
compartment.
Horizontal applications of the air handler must be installed
sloped (approximately 5/8 inch) toward the drain pan
openings to ensure proper condensate drainage.
These units are designed to match, and must be used
with, outdoor units as rated. The indoor sections are
manufactured with a orifice metering device installed
to provide optimum refrigerant control and system
performance with a variety of different capacities of
outdoor units.
Excessive Weight Hazard - Use two or more people
when moving and installing the unit. Failure to do so
can result in back or other type of injury.
WARNING
IMPORTANT
Physical contact with metal edges and corners while
applying excessive force or rapid motion can result in
personal injury. Be aware of, and use caution when
working near these areas during installation or while
servicing this equipment.
CAUTION
Danger of explosion. Keep flammable
materials and vapors, such as gasoline, away
from air handler. Place air handler so that
heating elements are at least 18 inches (46
cm) above the floor for a garage installation.
Failure to follow these instructions can result
in death, explosion, or fire.
WARNING
