York 36 User Manual

Page of 44
255040-YTG-A-0506
Unitary Products Group
39
GUIDE SPECIFICATIONS
GENERAL
Units shall be manufactured by York International Unitary 
Products Group in an ISO 9001 certified facility.
York's Sunline 2000
TM
 units are convertible single package-
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 and cooling with gas heat models are available with a 
wide variety of factory-mounted options and field-installed 
accessories to make them suitable for almost every applica-
tion. All units are self-contained and assembled on full perim-
eter 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 units 
have long lasting powder paint cabinets with 1000 hour salt 
spray test approval under ASTMB117 procedures. 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 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 thru 5 ton units shall have SEER ratings of 10.0 and 
the 6 ton unit shall have minimum EER ratings of 9.0. 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 procedures. Units shall be CSA listed, 
classified to ANSI Z21.47, UL 1995/CSA No. 236 standards.
UNIT CABINET
Unit cabinet shall be constructed of G90 galvanized steel, 
with exterior surfaces coated with a non-chalking, powdered 
paint finish, certified at 1000 hours salt spray test per 
ASTMB117 standards. Indoor blower section shall be insu-
lated with a minimum 1/2” thick insulation, coated on the air-
side. 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 servicing 
and maintenance. Full perimeter base rails shall be provided 
to assure reliable transit of equipment, overhead rigging 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 perfor-
mance 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 direct drive, multi-speed, or a factory 
installed belt drive assembly that includes an adjustable pitch 
motor pulley. Job site selected brake horsepower (B.H.P.) 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 for-
ward-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.
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.
Coils:
a.
Evaporator and condenser coils shall have alumi-
num plate fins mechanically bonded to seamless