5331896-YTG-C-1017
Johnson Controls Unitary Products
5
GUIDE SPECIFICATIONS
GENERAL
Units shall be manufactured by Unitary Products in an ISO
9001 certified facility. Package units give you the flexibility and
choices you need in today’s market. These packaged cooling/
heating units are designed for outdoor installation. Only utility
and duct connections are required at the point of installation.
The two-stage gas fired heaters have stainless steel tubular
heat exchangers and spark to burner ignition. They are
available in natural gas with field conversion to propane.
DESCRIPTION
Units shall be factory-assembled, single packaged, Heat
Pumps with Electric Cooling/Gas Heating units, designed for
outdoor installation. They shall have built in, equal size, field
convertible duct connections for supply/return or horizontal
supply/return. The units shall be factory wired, piped, charged
with R-410A Refrigerant and factory tested prior to shipment. All
unit wiring shall be both numbered and color coded. All models
shall be rated in accordance with DOE and AHRI test
procedures for both heating and cooling operation. Units shall
be CSA listed and classified to ANSI Z21.47/CAN/ CSA 2.3
standards and UL 1995/CAN/CSA No. 236-M90 standards.
•
Operating Efficiency -
All Heat Pump models shall be rated
at 14.0 SEER, 11.0 EER, and 8.0 HSPF for heat pump cool-
ing and heating operation. All models shall be rated at 81.0%
AFUE for gas heating operation.
•
Low Operating Sound Level -
The upward air flow carries
the normal operating noise up and away from the living area.
The rigid top panel effectively isolates noise. Isolator
mounted compressor and the rippled fins of the outdoor coil
muffle the normal fan motor and compressor operating
sounds. The unique formed base pan also aids in sound
attenuation with its structural design. Sound ratings as tested
under AHRI test procedures shall be less than 77 dbA for all
models.
UNIT CABINET
Unit cabinet shall be a single piece design, with drip edges and
no-seam corners to provide optimum water integrity. Unit shall
have a rigidly mounted outdoor coil guard to provide protection
from objects and personnel after installation. Indoor blower
section shall be insulated with foil-faced or foam insulation,
fastened to prevent insulation from entering the air stream.
Cabinet panels shall be separate, easily removable for
servicing and maintenance. Unit shall be built on a formed,
design base pan, with embossments at critical points to add
strength and rigidity and to aid in minimizing sound. Full
perimeter base rails shall be provided to assure reliable transit
of equipment, overhead rigging, for truck access and proper
sealing on roof curb applications. Base rails shall be easily
removable, when required to lower unit height. Filters shall be
field installed and field provided and be accessible through a
removable access door, sealed airtight. Units vertical discharge
and return duct configuration shall be designed to fit between
standard 24” O.C. beams without modification to building
structure, duct work and base unit. Condensate pan shall be
internally sloped and conform to ASHRAE 62-89 self-draining
standards, with 3/4” NPT female ridged mount connection.
•
Durable Finish -
The cabinet shall be is made of G90 galva-
nized steel with a powder paint coating for appearance and
protection. The pre-treated galvanized steel shall provide a
better paint-to-steel bond, which resists corrosion and rust
creep. Powder paint finish shall provide superior corrosion
resistance (1000 hour salt spray tested).
•
On Site Flexibility -
All model sizes shall use a compact
design cabinet in one of two footprints. This provides installer
flexibility for placing the proper capacity unit on curbs or pads
with the smallest footprint after the internal load has been
determined. Field convertible duct connections from side
shot to down shot allows the installer to have greater flexibil-
ity with less inventory.
•
Attractive Appearance -
A single-piece top cover containing
a top-discharge outdoor fan arrangement shall be used
which requires less square footage on installation and pro-
vides a wider variety of installations. The one-piece design
adds greater water integrity. Rounded corners with water drip
edges add to the attractive appearance and prevent water
penetration.
•
Convertible Airflow Design -
The bottom duct openings are
covered when they leave the factory, ready to be used for a
side supply/side return application. If a bottom supply/bottom
return application is desired, simply remove the two panels
from the bottom of the unit and place them in the side supply/
side return duct openings. No panel cutting is required and
no accessory panel is necessary. Convertible airflow design
allows maximum field flexibility and minimum inventory.
•
Utility Connections Made Easy -
Electric utility access shall
be provided through the bottom or the side of the unit. Utility
connections should be made quickly and with a minimum
amount of field labor. A field supplied and field installed elec-
trical disconnect switch must be installed.
•
Easy Service Access -
Individual access panels are pro-
vided in access to all major components - compressors,
indoor coils, blower, controls/gas heating section, filters, etc.
that makes servicing easy. Removing these panels allow
easy removal of the components such as the blower assem-
bly for maintenance and ease of troubleshooting.
•
Top Discharge -
The top-discharge outdoor fan does not
disrupt neighboring areas or dry out vegetation surrounding
the unit. The warm air from the top mounted fan is blown up
and away from the structure and any landscaping.
•
Outdoor Coil Grille -
All models utilize a stamped slotted
design which provides superior impact protection against
small objects during transit and after installation.
Indoor Blower Assembly -
Fan shall be direct drive design.
Blower wheel shall be double-inlet type with forward-curved
blades, dynamically balanced to operate smoothly throughout
the entire range of operation. Airflow design shall be constant
air volume. Bearings shall be sealed and permanently
lubricated for longer life and no maintenance. Fan assembly
shall be a slide-out design for easy removal and cleaning.
Indoor blower motors shall be equipped with a high efficiency
brushless DC motor (constant torque) also known as an
enhanced ECM motor.
