Unit Installation | 7SM Split AH/AV Air Handler
8733826256 (2020/06)SM Split AH/AV Air Handler
Subject to change without prior notice
UNIT INSTALLATION
This section contains information on the following:
LOCATION SELECTION
To maximize system performance, efficiency and
reliability, and to minimize installation costs, it is
always best to keep the refrigerant lines as short
as possible. Every effort should be made to locate
the air handler and the condensing section as
close as possible to each other.
Fig. 3 Air Handler and the Condensing Section
Air Handler Location
Locate the air handler unit in an indoor area that
allows easy removal of the filter and access panels,
and has enough room for service personnel to
perform maintenance or repair. Provide sufficient
room to make electrical and duct connections. If
the unit is located in a confined space such as a
closet, provisions must be made for return air to
freely enter that space.
Condensing Section Location
Locate the condensing section in an area that
provides sufficient room to make water and
electrical connections, and allows easy removal of
the access panels, for service personnel to
perform maintenance or repair. The condensing
section is designed for indoor use only.
INSTALLATION
Subject Page
Location Selection
7
Installation
7
Duct System
10
Electrical
10
Refrigerant Lines
15
Typical System
Setup
18
Specific Application
Considerations
19
Post-Installation
System Checkout
20
NOTICE: To avoid equipment damage, DO
NOT use these units as a source of heating
or cooling during the construction process.
Doing so may affect the unit’s warranty. The
mechanical components and filters will
quickly become clogged with construction
dirt and debris, which may cause system
damage.
NOTICE: These units are not approved for
outdoor installation; therefore, they must
be installed inside a structure in a
conditioned space. Do not locate in areas
that are subject to freezing.
Reference the installation and operation
manual for your SM Split Condensing
Section for detailed installation
instructions.
Remove all shipping blocks from the inside
and/or outside of the air handler section
prior to final installation.
WARNING: The installer should comply with
all local codes and regulations which govern
the installation of this type of equipment.
Local codes and regulations take precedent
over any recommendations contained in
these instructions. In lieu of local codes, the
equipment should be installed in
accordance with the recommendations
made by the National Electric Code, and in
accordance with the recommendations
made by the National Board of Fire
Underwriters.
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