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Mechanical specifications, Options/accessories – Trane WSC060-120 User Manual

Page 48

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48

PKGP-PRC004-EN

Mechanical
Specifications

Options/Accessories

Electric Heaters
Field-installed electric heat modules shall
be available for installation within basic
unit. Electric heater elements shall be
constructed of heavy-duty nickel
chromium elements internally delta
connected for 200 volt, wye connected
for 380-415 volt. Staging shall be
achieved through the unit control
processor (UCP). Each heater package
shall have automatically reset high limit
control operating through heating
element contactors. All heaters shall be
individually fused from the factory, where
required. Power assemblies shall provide
single-point connection.

Roof Curb
The roof curb shall be designed to mate
with the downflow supply and return
openings and provide support and a
water tight installation when installed
properly. The roof curb design shall allow
field-fabricated rectangular supply/return
ductwork to be connected directly to the
curb. Curb shall be shipped knocked down
for field assembly and shall include wood
nailer strips.

Economizer
The economizer shall be either field or
factory-installed and shall be available
with or without barometric relief. The
assembly includes fully modulating 0-100
percent motor and dampers, relief,
minimum position setting, preset linkage,
wiring harness with plug, spring return
actuator and fixed dry bulb. The
barometric relief damper provide a
pressure operated damper that shall be
gravity closing and shall prohibit entrance
of outside air during the equipment “off”
cycle. Solid state enthalpy and differential
enthalpy control shall be factory or field-
installed options. The factory-installed
economizer arrives in the shipping
position and shall be moved to the
operating position by the installing
contractor.

Phase Monitor
Phase monitor shall provide 100%
protection for motors and compressors
against problems caused by phase loss,
phase imbalance, and phase reversal.
Phase monitor is equipped with an LED
that provides an ON or FAULT indicator.

Remote Potentiometer
The minimum position setting of the
economizer shall be adjusted with this
field-installed accessory.

Reference or Comparative Enthalpy
Reference or Comparative Enthalpy
option shall be available when a factory-
installed economizer is ordered.

Clogged Filter/Fan Failure Switch
A factory or field-installed dedicated
differential pressure switch is available to
achieve active fan failure indication and/
or clogged filter indication. These
indications will be registered with either a
zone sensor with status indication lights
or an Integrated Comfort

system.

Manual Outside Air Damper
Factory or field-installed rain hood and
screen shall provide up to 50 pecent
outside air.

Motorized Outside Air Dampers
Factory or field-installed manually set
outdoor air dampers shall provide up to
50 percent outside air. Once set, outdoor
air dampers shall open to set position
when indoor fan starts. The damper shall
close to the full closed position when
indoor fan shuts down.

Oversized Motors
Factory or field-installed direct drive
oversized motors shall be available for
high static applications.

High Pressure Cutout
Standard in all units.

Hinged Access Doors
Sheet metal hinges are available factory-
installed on the Filter/Evaporator, Supply
Fan/Heat, and the Compressor/Control
Access Doors.

Discharge Air Sensing Kit
This factory or field-installed option
provides true discharge air sensing in
heating models. This sensor is a status
indicator readable through Tracer

or

Tracker

.

Black Epoxy Coated Condenser Coil
The coil provides corrosion protection to
condenser coils for seacoast application.
The protection is a factory applied
thermoset vinyl coating, bonded to
normal aluminum fin stock. The uniform
thickness of the bonded vinyl layer
exhibits excellent corrosion protection in
salt spray tests.