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I. SPECIFICATIONS
A. GENERAL
These Ceiling mount air handlers are available in
cooling capacities of 1.5, 2, 2.5 and 3 nominal tons of
cooling. Electric heat models are available in capaci-
ties of 5, 8 and 10 KW.
The units are designed to be installed in a horizontal
position above a dropped ceiling. Units are not to be
installed outside the structure. These models are
designed for INDOOR USE ONLY.
The information on the rating plate is in compliance with
the FTC and DOE rating for single phase units in the
U.S.A..
IMPORTANT: The United States Environmental
Protection Agency (EPA) has issued various regu-
lations regarding the introduction and disposal of
refrigerants in this unit. Failure to follow these
regulations may harm the environment and can
lead to the imposition of substantial fines. Be-
cause these regulations may vary due to the
passage of new laws we suggest that any work on
this unit be done by a certified technician. Should
you have any questions please contact the local
office of the EPA.
B. MAJOR COMPONENTS
The unit includes a evaporator coil with flowrator as-
sembly, an indoor blower and all necessary internal
electrical wiring. The cooling system of these units is
factory-evacuated, charged and performance tested.
Refrigerant amount and type are indicated on rating
plate.
II. INSTALLATION
A. GENERAL
1a. INSTALLATION — This product is designed and
manufactured to permit installation in accordance
with National Codes. It is the installer's responsi-
bility to install the product in accordance with
National Codes and/or prevailing local codes and
regulations.
1b. PRE-INSTALLATION CHECK-POINTS — Before at-
tempting any installation, the following points
should be considered:
Structural strength of supporting members
Clearances and provision for servicing
Power supply and wiring
Air duct connections
Drain facilities and connections
2b. LOCATION - These units are designed to be in-
stalled in a horizontal position above a dropped
ceiling. The location of the unit should be based
on thorough consideration of the PRE-INSTALLA-
TION CHECK POINTS.
B. INSTALLATION
1. Before locating the unit on the dropped ceiling, make
sure that the strength of the ceiling and beams is
adequate at the point to support the weight involved.
This is very important and installers responsibility. The
following list shows approximate weight of unit.
MODEL
AC18
AC24
AC30
AC36
2. The unit should be mounded on a horizontal position
above a dropped ceiling of adequate strength (see
Figure 2)
3. The location of the unit should provide proper access for
inspection and servicing.
C. DUCTING
Duct work should be fabricated by the installing con-
tractor in accordance with local codes. Industry manu-
als may be used as a guide when sizing and designing
the duct system - such as NESCA (National Environ-
mental Systems Contractors Association, 1501 Wil-
son Blvd., Arlington, Virginia 22209).
DO NOT, UNDER ANY CIRCUMSTANCES, CON-
NECT DUCT WORK TO ANY OTHER HEAT PRODUC-
ING DEVICE SUCH AS FIREPLACE INSERT, STOVE,
ETC. UNAUTHORIZED USE OF SUCH DEVICES MAY
RESULT IN FIRE, CARBON MONOXIDE POISONING,
EXPLOSION, PERSONAL INJURY OR PROPERTY
DAMAGE.
This unit should be placed as close to the space to be
air conditioned as possible. Adequate clearance must
be maintained as indicated in Section F "Clearances".
Ducts should be run as directly as possible to supply
and return outlets. Use of non-flammable weatherproof
flexible connectors on both supply and return connec-
tions at unit to reduce noise transmission is recom-
mended.
D. FILTERS
Filters are not provided with unit, and must be supplied
and installed in the return air system by the installer. A
field installed filter grille is recommended for easy and
convenient access to the filters, for periodic inspection
and cleaning. Filters must have adequate face area for
the rated air quantity of the unit. The minimum filter size
is 20" x 20" x 1".
E. CLEARANCES
These units are U.L. listed for installations with zero
clearance to combustible materials, reference should
be made to the marking on the particular unit being
installed where specific information regarding clear-
ances is provided. Access must be provided for servic-
4
WEIGHT (lb.)
59
59
69
79
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