343615-YTG-B-0308
32
Johnson Controls Unitary Products
GUIDE SPECIFICATIONS
GENERAL
Units shall be manufactured by York International Unitary
Products Group in an ISO 9001 certified facility.
York's Sunline Magnum
™
units are convertible single pack-
age units. Although the units are primarily designed for curb
mounting on a roof, they can also be slab-mounted at ground
level or set on steel beams above a finished roof. Cooling
only, cooling with gas heat and cooling with electric heat
models are available with a wide variety of factory-mounted
options and field-installed accessories to make them suitable
for almost every application. All units are self-contained and
assembled on full perimeter base rails with holes in the four
corners for overhead rigging. Every unit is completely piped,
wired, charged and tested at the factory to simplify the field
installation and to provide years of dependable operation. All
models (including those with an economizer) are suitable for
either bottom or horizontal duct connections. Models with
power exhaust are suitable for bottom duct connections only.
For bottom duct, remove the sheet metal panels from the
supply and return air openings through the base of the unit.
For horizontal duct, remove the supply and return air panels
on the rear of the unit.
All non-Scroll compressors include crankcase heaters and all
compressors have internal pressure relief. Every refrigerant
circuit includes a liquid line filter-drier, a discharge line high
pressure switch and a suction line with a freezestat and low
pressure/loss of charge switch.The unit control circuit
includes a 75 VA transformer, a 24-volt circuit breaker and a
relay board with a compressor lockout circuit, a terminal strip
for thermostat wiring, plus an additional set of pin connectors
to simplify the interface of additional field controls. All models
are CSA listed. All models include a 1-year limited warranty
on the complete unit. Compressors and electric heater ele-
ments carry a 5-year warranty. Aluminized steel and Stainless
steel tubular heat exchangers carry a 10-year warranty.
DESCRIPTION
Units shall be factory-assembled, single packaged, Electric
Cooling/Gas Heat, Electric Cooling/Optional Electric Heat
and designed for outdoor mounted installation.
The 3 ton, 4 ton and 5 ton units shall have minimum SEER
rating of 14. They shall have built-in field convertible duct
connections for down discharge supply/return or horizontal
discharge supply/return, and be available with factory
installed options or field installed accessories. The units shall
be factory wired, piped, charged with R-22 refrigerant and
factory tested prior to shipment. All unit wiring shall be both
numbered and color coded. All units the cooling performance
shall be rated in accordance with DOE and ARI test proce-
dures. Units shall be CSA listed, classified to ANSI Z21.47,
UL 1995/CSA No. 236 standards.
UNIT CABINET
Unit cabinet shall be constructed of a combination of G60 and
G90 galvanized steel, with exterior surfaces coated with a
non-chalking, powdered paint finish, certified at 750 hours
salt spray test per ASTMB117 standards. Indoor blower sec-
tion shall be insulated with a minimum 1/2” thick insulation,
coated on the airside. Aluminum foil faced insulation shall be
used in the furnace compartment and be fastened with ridged
fasteners to prevent insulation from entering the air stream.
Cabinet panels shall be “large” size, easily removable for ser-
vicing and maintenance. Full perimeter base rails shall be
provided to assure reliable transit of equipment, overhead rig-
ging and proper sealing on roof curb applications. Disposable
1" filters shall be furnished and be accessible through a
removable access door, sealed airtight. Units filter track shall
be designed to accommodate either 1" or 2" filters. Fan per-
formance measuring ports shall be provided on the outside of
the cabinet to allow accurate air measurements of evaporator
fan performance without removing panels or creating air by-
pass of the coils. Condensate pan shall be internally sloped
and conform to ASHRAE 62-89 self-draining standards. Con-
densate connection shall be a minimum of 3/4” I.D. female
and be a ridged mount connection.
INDOOR (EVAPORATOR) FAN ASSEMBLY
The indoor fan shall be a factory installed direct drive. Job
site selected (B.H.P.) brake horsepower shall not exceed the
motors nameplate horsepower rating, plus the service factor.
Units shall be designed not to operate above service factor.
Fan 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 lubri-
cated for longer life and no maintenance.
OUTDOOR (CONDENSER) FAN ASSEMBLY
The outdoor fan shall be of the direct-driven propeller type,
discharge air vertically, have aluminum blades riveted to a
corrosion resistant steel spider bracket and shall be dynami-
cally balanced for smooth operation. The outdoor fan motor
shall be totally enclosed with permanently lubricated bear-
ings, internally protected against overload conditions and
staged independently.
REFRIGERANT COMPONENTS
Compressor:
a.
Shall be internally protected with internal high-pres-
sure relief and over temperature protection.
b.
Shall have internal spring isolation and sound muf-
fling to minimize vibration and noise, and be exter-
nally isolated on a dedicated, independent mounting.
