Mechanical Specifications - Trane 4WCY4024 Product Data

General
The units shall be horizontal airflow as
shipped and convertible to downflow. All
units shall be factory assembled, piped,
internally wired and fully charged with
refrigerant. All units shall be factory run
tested to check cooling operation, fan and
blower rotation and control or TXV se-
quence. Units shall be designed to operate
at ambient temperatures between 115°F
and 55°F in cooling as manufactured.
Cooling performance shall be rated in ac-
cordance with A.H.R.I. standards.
Unit Casing
All components shall be mounted in a
weather-resistant steel cabinet with an
enamel finish. Access panels shall be pro-
vided for unit controls and indoor coil and
fans. Indoor air section compartment shall
be completely insulated with fireproof,
permanent, odorless glass fiber material.
Knockouts shall be provided for utility and
control connections. Drain connections
shall be provided to accommodate indoor
water runoff.
Compressor
The compressor shall be hermetically
sealed, high efficiency Climatuff
pressors. Internal overcurrent and over
temperature protection, internal pressure
relief shall be standard.
Refrigeration System
All units shall have TXV in cooling and TXV
in heating. Service pressure tap ports, and
a refrigerant line filter dryer shall be stan-
dard.
Indoor Coil
Coils shall be internally finned or smooth
bore 3/8" copper tubes mechanically
bonded to configured aluminum plate
fin as standard. Evaporator coil leak and
pressure tested to 200 psig; condenser
coil tested to 450 psig.

Mechanical Specifications

Condenser Coil —
The Spine Fin™condenser coil shall be
continuously wrapped, corrosion resis-
tant all aluminum with minimum brazed
joints. This coil is 3/8 inch O.D. seamless
aluminum tubing glued to a continuous
aluminum fin. Coils are lab tested to
withstand 2,000 pounds of pressure per
square inch. The outdoor coil provides
low airflow resistance and efficient heat
transfer. The coil is protected on all four
sides by louvered panels.
Indoor Air Fan — Direct-drive, forward-
curved, centrifugal wheel in a Composite
Vortica ® Blower housing. Motor shall
have thermal overload protection.
Permanently lubricated motor bearings.
Motor/blower assembly isolated from unit
with rubber mounts.
Condenser Fan — Direct-drive, draw
thru propeller type. Weather-proofed
permanent split capacitor fan motor shall
have built-in thermal overload and per-
manently lubricated motor bearings.
System Controls
System controls include condenser fan,
evaporator fan and compressor contac-
com-
®
tors.
Accessories
Roof Curb — The roof curb shall be de-
signed to mate with the unit and provide
support and complete weathertight instal-
lation when properly installed. Adhesive
back polyurethane sealing strips shall be
provided to ensure an airtight seal be-
tween supply and return openings of the
curb and unit. The roof curb design allows
field fabricated ductwork to be connected
directly to the curb. Curb ships knocked
down for field assembly, and includes
factory-installed wood nailer strips.
Electric Heaters — Each heater assem-
bly shall include power supply fusing if
over 48 amps, automatic resetting limit
switches and heat limiters for thermal
protection. Heaters shall be provided with
polarized plugs for quick connection to
unit low voltage wiring. Electric heat mod-
ules shall be UL listed.
Single Source Power Entry — This ac-
cessory when used with electric heat
accessory shall allow single source power
connection to unit and heater combina-
tion. Single source power entry kits shall
have specific matching heater(s). Kit
shall include high voltage terminal blocks,
fuse blocks and fuses, cut-to-length in-
terconnecting wiring, and junction box (if
required) to provide power sources with
fuse protection as required for both the
unit and accessory heater. Kit compo-
nents shall install within the unit cabinet in
the heater access section. Single source
branch power circuit shall be protected and
wired in accordance with local codes.
Fully Modulating Economizer — This
accessory shall be field installed and be
composed of the following items: 0-100%
fresh air damper, damper drive motor, fixed
dry bulb enthalpy control, and low voltage
wiring plug for electrical connections. Solid
state enthalpy or differential enthalpy con-
trol is optional. Economizer operations
shall be controlled by the preset position
of the enthalpy control. A barometic relief
damper shall be standard with the econo-
mizer and provide a pressure operated
damper that shall be gravity closing and
prohibit entrance of outside air on equip-
ment "off" cycle. Economizer requires
BAYRLAY004A relay kit to interface the
economizer to the heat pump.
Manual Outside Air Dampers — Rain
hood and screen shall be field installed.
Suitable for up to 25% outside air.
Start Kit — Extra compressor starting ca-
pacity for single phase equipment.
Control Options
Standard Indoor Thermostats — Two
stage heating/cooling or one stage heat-
ing/cooling thermostats shall be available
in either manual or automatic changeover.
Programmable Electronic Night Set-
back
electronic thermostat shall provide heat-
ing setback and cooling setup with 7-day,
programming capability. 1H/1C or 2H/2C
models available.
29
Thermostat — Programmable