Product data

2
The 38/40BN duct-free split sys-
tems offer the solution of choice. The
compressor is outdoors, linked by re-
frigerant lines to an indoor fan coil lo-
cated directly in the room it will heat or
cool. These systems have minimal im-
pact on the existing structure, and the
design and interior of the conditioned
space is not compromised by bulky
ductwork. Because of these features,
this duct-free split system can be in-
stalled in places where conventional
ducted cooling simply cannot go.
Low sound levels
When noise is a concern, the duct-free
split systems are the answer because
you do not have to worry about duct
design. There are no compressors
indoors, either in the conditioned
space or directly over it, and there is
none of the noise usually generated by
air being forced through ductwork. The
indoor units are whisper quiet. The
outdoor units operate at low sound lev-
els, and are the perfect answer to
sound level ordinances.
When sound ordinances and prox-
imity to neighbors demand quiet oper-
ation, the 38BN unit is the right
choice: The advanced, horizontal air-
flow design distributes air more evenly
over the coil. The coil also acts as an
extra sound-suppressing device
before the air is discharged at a very
low velocity.
Secure operation
If security is an issue, outdoor and
indoor units are connected only by
refrigerant piping and wiring to pre-
vent intruders from crawling through
ductwork. In addition, since 38BN
units can be installed 6 in. away from
outside walls, coils are protected from
vandals and severe weather.
Fast installation
This compact duct-free split system
takes only a few hours to install, since
only wire and piping need to be run.
The fast and easy installation ensures
minimal disruption to customers in the
home or workplace. This is an added
advantage of the 38/40BN duct-free
split systems, especially in retrofit
situations.
Features like mounting brackets
make the unit very easy to install.
Simple servicing and
maintenance
Removing a panel on outdoor units
provides immediate access to the iso-
lated compressor and control compart-
ment, allowing a service technician
access to check unit operation without
a loss of condenser airflow. In addition,
the draw-thru design of the outdoor
section means that dirt accumulates on
the outside surface of the coil. Coils
can be cleaned quickly from the inside
using a pressure hose and detergent.
On all indoor units, service and
maintenance expense is reduced due
to easy-to-change cleanable filters. In
addition, these high wall systems have
extensive self-diagnostics to assist in
troubleshooting.
Built-in reliability
Duct-free split system indoor and out-
door units are designed to provide
years of trouble-free operation.
The high wall indoor units include
protection against freeze-up and high
discharge temperatures. All systems
include self-diagnostics to ensure
reliability.
The condensing units have many
safety features standard to ensure high
performance and lasting reliability un-
der the most demanding situations. For
example, start capacitors and relays
assure dependable start-ups, especially
during low voltage conditions down to
187 v.
The totally enclosed condenser-fan
motor means greater reliability under
rain conditions, ensuring dependable
performance for many years.
Individual room comfort
Maximum comfort is provided because
each space can have individual set
points and may be controlled based on
actual usage. The air sweep feature
provided permits optimal room air mix-
ing to eliminate hot and cold spots for
occupant comfort.
In addition, year-round comfort can
be provided with heat pumps.
Table of contents
Page
Features/Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Model Number Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
ARI Capacity Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Sound Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6,7
Base Unit Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-11
Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Typical Piping and Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Application Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Typical Wiring Schematics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-20
Controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21,22
Guide Specifications — Indoor Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . 23,24
Guide Specifications — Outdoor Unit . . . . . . . . . . . . . . . . . . . . . . . . . . 25,26