Accessories/Options; Economizer; Phase Monitor; Black Epoxy Coated Condenser Coil - Trane Precedent YSC060-120 User Manual

Indoor Fan
All units shall have belt drive motors.
Units with belt drive motors shall have
an adjustable idler-arm assembly for
quick-adjustment to fan belts and motor
sheaves. All motors shall be thermally
protected. Oversized motors shall be
available for high static operations.
Controls
Unit shall be completely factory wired
with necessary controls and contactor
pressure lugs or terminal block for
power wiring. Unit shall have single
point power entry as standard. Units
shall provide an external location for
mounting a fused disconnect device.
Microprocessor controls provide for all
24 volt control functions. With the
microprocessor controls, the resident
control algorithms shall make all
heating, cooling, and/or ventilating
decisions in response to electronic
signals from sensors measuring indoor
and outdoor temperatures. The control
algorithm maintains accurate
temperature control, minimizes drift
from set point, and provides better
building comfort. A centralized Micro-
processor shall provide anti-short cycle
timing and time delay between
compressors to provide a higher level of
machine protection.
RT-PRC017-EN
Mechanical
Specifications

Accessories/Options

Roof Curb
The roof curb shall be designed to mate
with the unit's downflow supply and
return openings and provide support and
a watertight 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

This accessory shall be either field or
factory-installed and is available with or
without barometric relief. The assembly
includes fully modulating 0-100 percent
motor and dampers, minimum position
setting, preset linkage, wiring harness
with plug, spring return actuators and
fixed dry bulb control. Optional solid state
enthalpy and differential enthalpy control
shall be either factory or field-installed.
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
Field-installed, the minimum position
setting of economizer shall be adjusted
with this accessory.
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.
Manual Outside Air Damper
Factory or field-installed rain hood and
screen shall provide up to 50 percent
outside air.
Oversized Motors
Factory or field-installed oversized
motors shall be available for high static
applications.
Discharge Air Sensing
This factory or field option provides true
discharge air sensing in heating models.
This sensor is a status indicator readable
through Tracer ™ or Tracker ™ .
Coil Guards
Hail protection quality coil guards shall be
either factory or field-installed for
condenser coil protection.
Fan Failure/Clogged Filter Switches
These factory or field-installed options
allow for individual fan failure and dirty
filter indication. The fan failure switch will
disable all unit functions and "flash" the
Service LED on the zone sensor. The dirty
filter switch will light the Service LED on
the zone sensor and will allow continued
unit operation.
High Pressure Cutout
All units have High Pressure cutout as
standard.
Hinged Access Doors
Sheet metal hinges are available factory-
installed on the Filter/Evaporator Access
Door, Indoor Fan/Heat Exchanger Door,
and the Compressor/Control Access
Door.

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.
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