Subject to change without notice. Printed in U.S.A.
036-21489-001-C-1004
Copyright
©
2004 by Unitary Products Group. All rights reserved.
Supersedes: 036-21489-001-B-0504
Unitary
5005
Norman
Products
York
OK
Group
Drive
73069
GUIDE SPECIFICATIONS
GENERAL
Units shall be manufactured by York International Unitary
Products Group is an ISO 9001 certified facility. York
®
Sun-
line 2000™ Heat Pumps are convertible single package units.
All models have dual refrigerant circuits for efficient part load
operation. 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. These heat
pumps utilize a unique ambient compensated time-tempera-
ture defrost system. The defrost module automatically
increases the time interval between defrost cycles as the out-
door ambient temperature decreases. This helps to eliminate
unnecessary, costly, defrosts.
DESCRIPTION
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 provide for quick and easy field installation. 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, you remove the sheet metal panels from the
supply and return air openings through the base of the unit.
For horizontal duct, you replace the supply and return air
panels on the rear of the unit with a side duct flange acces-
sory. All models are available with five different outdoor air
damper options:
•
Single enthalpy economizer
•
Differential dual enthalpy economizer
•
Single enthalpy economizer with power exhaust
•
Differential dual enthalpy economizer with power
exhaust
•
Motorized air damper
A fixed outdoor air intake assembly is shipped in the return air
compartment of all units ordered without an economizer or
motorized outdoor air damper option. The assembly includes
a rain hood with a damper that can be set for 10, 15 or 25%
outdoor air. With bottom duct connections, the intake damper
assembly should be mounted over the opening in the return
air panel. With horizontal ductwork, it should be mounted on
the return air duct.
UNIT CABINET
All units shall have long lasting powder paint cabinets with
1000 hour salt spray test approval under ASTM-B117 proce-
dures. All units with supplemental electric heat shall be wired
for a single power source and include a bank of nickel chro-
mium elements mounted at the discharge of the supply air
blower to provide a high velocity and uniform distribution of
air across the heating elements. Every element shall be fully
protected against excessive current and temperature by
fuses and two thermal limit switches.
The power supply wiring shall be routed into the control box
through a threaded pipe connection in the base pan of the
unit or through a knockout in the wiring panel on the front of
the unit. All internal factory wiring shall be color coded and
numbered for ease in servicing and troubleshooting. All 208/
230 and 460-volt models shall be ETL approved. All 208/230
and 575-volt models shall be CGA approved.
INDOOR (EVAPORATOR) FAN ASSEMBLY
All supply air blowers shall be equipped with a belt drive that
can be adjusted to meet the exact requirements of the job. A
high speed drive accessory shall be available for applications
with a higher CFM and/or static pressure requirement.
REFRIGERANT COMPONENTS
Compressors shall include crankcase heat and internal pres-
sure relief. Every refrigerant circuit shall include bi-directional
liquid line filter-driers, high pressure switches, lower pres-
sure/loss of charge switches, suction line freezestats and
high temperature switches to protest all system components.
The unit control circuit shall include two 75 VA transformers,
two 24-volt circuit breakers and a relay board with two com-
pressor lockout circuits, a terminal strip for thermostat wiring,
plus an additional set of pin connectors to simplify the inter-
face of additional field controls.
ELECTRIC HEATING SECTION
All units with supplemental electric shall be wired for a single
power source and include a bank of nickel chromium ele-
ments mounted at the discharge of the supply air blower to
provide a high velocity and uniform distribution of air across
the heating elements. Every element shall be fully protected
against excessive current and temperature by fuses and two
thermal limit switches.
ELECTRICAL REQUIREMENTS
The power supply wiring shall be routed into the control box
through a threaded pipe connection in the base pan of the
unit or through a knockout in the wiring panel on the front of
the unit. All internal factory wiring shall be color coded and
numbered for ease in servicing and troubleshooting. All 208/
230 and 460-volt models shall be ETL approved. All 208/230
and 575-volt models shall be CGA approved.
STANDARD LIMITED WARRANTIES
All models shall include a 1-year limited warranty on the com-
plete unit. Compressors and electric heater elements shall
carry an additional 4-year warranty.
