York D3CG - Manual

DESCRIPTION

Sunline 2000 units are highly efficient, convertible rooftops. 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 units are designed and manufactured under ISO 9002
Quality System Certification.

Cooli ng on ly, c oolin g with gas h eat and c ool ing with
supplemental electric heat units are available with a wide
variety of field-installed accessories to make them suitable for
almost every application.

All units are self-contained and assembled on full perimeter
base rails. The base rails have 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. Powder paint cabinets provide an
exceptionally durable finish with the 750 hour salt spray
process per ASTM-B117 test standard.

All models are available with three different outdoor air damper
accessosries:

•

Single enthalpy economizer

•

Differential enthalpy economizer

•

Motorized outdoor air intake damper

All models (including those with an economizer ) are suitable
for either downflow or sideflow duct connections. For downflow
duct, remove the sheet metal panels from the supply and return
air openings through the base of the unit. For sideflow duct,
replace the supply and return air panels on the rear of the unit
with a side duct flange accessory.

A fixed outdoor air intake assembly is shipped in the return air
compartment of all units. 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.

All supply air blowers are equipped with a belt drive that can
be adjusted to meet the exact requirements of the job.

All compressors include crankcase heat and internal pressure
relief. Every refrigerant circuit includes an expansion valve, a
liquid line filter-drier, a discharge line high pressure switch and
a suction line with a freezestat and low pressure switch. The
unit control circuit includes a 75 VA transformer, a 24-volt circuit
breaker and a relay board with two compressor lockout circuits,
a terminal strip for thermostat wiring, plus an additional set of
pin connectors to simplify the interface of additional field
controls.

All gas heat models are built with two heating sections for two
equal stages of capacity control. Each section includes a
durable heat exchanger with aluminized steel tubes, a
redundant gas valve, spark ignition, power venting, an ignition
module for 100% shut-off and all of the safety controls required
to meet the latest ANSI standards.

The gas supply piping can be routed into the heating
compartment through a hole in the base pan of the unit or
through a knockout in the piping panel on the front of the unit.

All electric heat models are wired for a single power source and
include a bank of nickel chromium 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 is fully protected against excessive current and
temperature by fuses and two thermal limit switches.

The power supply wiring can 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.

530.26-TG3YI (1294)

SINGLE PACKAGE
GAS / ELECTRIC UNITS AND
SINGLE PACKAGE AIR CONDITIONERS

D3CE / D3CG 180 & 240
(WORLD 50 HZ)

SUNLINE 2000

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DCG
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