3
Easy maintenance and
installation
All units are factory shipped in
the vertical discharge configura-
tion
for fit-up to standard roof curbs.
(One accessory curb fits sizes 004-
007; another accessory curb fits sizes
008-014.) Contractors can order and
install the roof curbs early in the con-
struction stage, before decisions on
size requirements have been made.
All units feature roll-formed base-
rail
design with forklift slots on 3 sides
of the unit and rigging holes for easier
maneuvering and installation. Stretch-
wrap packaging protects the unit dur-
ing shipment and storage.
Units are easily converted
from
vertical to horizontal applications to
make retrofit and add-on jobs easier.
To convert from vertical to horizontal
discharge, simply relocate 2 panels.
The same basic unit can be used for a
variety of applications and can be
quickly modified at the jobsite.
Standard high-performance, high-
static, belt-driven evaporator-fan
motors enable 48HJ004-014 units
to operate in most ductwork
configurations.
Ductwork connections are made
easy
by the logical 2 to 1 aspect ratio.
On vertical discharge units, ductwork
attaches directly to the roof curb.
Thru-the-bottom service connec-
tion capability
comes standard with
the rooftop unit to allow power and
control wiring and gas connections to
be routed through the unit’s basepan,
thereby minimizing roof penetrations
(to prevent water leaks). Power, gas,
and control connections are made on
the same side of the unit to simplify
installation.
The non-corrosive, sloped, con-
densate drain pan
is made in con-
formance with ASHRAE (American
Society of Heating, Refrigeration, and
Air Conditioning Engineers) Standard
62 to meet many Indoor-Air Quality
(IAQ) specifications. The condensate
drain pan offers both bottom and end
drain capability to minimize roof pene-
trations. The bottom drain can be used
in conjunction with thru-the-bottom
connections. An external trap must be
field supplied.
Standard 2-in. throwaway filters
are easily accessed through an easily
removable filter access panel located
directly above the air intake hood; no
tools are required to change the filters.
All units are designed with a sin-
gle continuous top piece
to elimi-
nate leaking at the seams or gasketing.
Belt-driven evaporator-fan motors
allow maximum on-site flexibility with-
out changing motors or drives.
Low-voltage wiring connections
are easily made due to the large termi-
nal board which is conveniently located
for quick, simple access.
Features/Benefits (cont)
FULLY MODULATING DURABLADE
ECONOMIZER (OPTION OR ACCESSORY)
HIGH-EFFICIENCY COILS
ON-SITE CONVERTIBILITY
FROM VERTICAL TO
HORIZONTAL DISCHARGE
HIGH-EFFICIENCY
COILS AND
ACUTROL™
REFRIGERANT
METERING DEVICE
SINGLE PIECE
TOP PANEL
SLEEVE BEARING PERMANENTLY
LUBRICATED MOTORS
SLOPED,
NON-CORROSIVE
CONDENSATE
DRAIN PAN
TOOL-LESS
FILTER ACCESS
MOISTUREMISER
DEHUMIDIFICATION
PACKAGE (FACTORY-
INSTALLED OPTION)
