54
PKGP-PRC003-EN
Mechanical
Specifications
Factory Installed Options
Black Epoxy Pre-Coated Coils
The black epoxy coils have a thermoset
vinyl coating that is bonded to the
aluminum fin stock prior to the fin-
stamping process. The pre-coated coils
are an economical option for protection in
mildly corrosive environments.
High Pressure Cutout
This is offered for units that do not have
High Pressure cutout as standard. All 3-
phase units with scroll compressors
include High Pressure Cutout as
standard.
Hinged Access Doors
Sheet metal hinges are available on the
Filter/Evaporator, Supply Fan/Heat, and
the Compressor/Control Access Doors.
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.
Powered or Unpowered Convenience
Outlet
This is a GFCI, 120v/15amp, 2 plug,
convenience outlet, either powered or
unpowered. When the convenience outlet
is powered, a service receptacle
disconnect will be available. The
convenience outlet is powered from the
line side of the disconnect or circuit
breaker, and therefore will not be
affected by the position of the disconnect
or circuit breaker. This option can only be
ordered when the Through the Base
Electrical with either the Disconnect
Switch or Circuit Breaker option is
ordered.
Supply and/or Return Air Smoke
Detector
With this option, if smoke is detected, all
unit operation will be shut down. Reset
will be manual at the unit. Return Air
Smoke Detectors require minimum
allowable airflow when used with certain
models. See the Installation, Operation,
and Maintenance (IOM) manual for the
models affected and the minimum
allowable airflow required. This option is
available for microprocessor controlled
units.
Through the Base Electrical Access
An electrical service entrance shall be
provided allowing electrical access for
both control and main power connections
inside the curb and through the base of
the unit. Option will allow for field
installation of liquid-tight conduit and an
external field-installed disconnect switch.
Through the Base Electrical with Circuit
Breaker
This option is a thermal magnetic, molded
case, HACR Circuit Breaker with
provisions for through the base electrical
connections. The circuit breaker will be
installed in a water tight enclosure in the
unit with access through a swinging door.
Wiring will be provided from the switch to
the unit high voltage terminal block. The
circuit breaker will provide overcurrent
protection, be sized per NEC and UL
guidelines, and be agency recognized by
UL/CSA.
Through the Base Electrical with
Disconnect Switch
This 3-pole, molded case, disconnect
switch with provisions for through the
base electrical connections are available.
The disconnect switch will be installed in
the unit in a water tight enclosure with
access through a swinging door. Wiring
will be provided from the switch to the
unit high voltage terminal block. The
switch will be UL/CSA agency recognized.
Note:
The disconnect switch will be sized
per NEC and UL guidelines but will not be
used in place of unit overcurrent
protection.
Two-Inch Pleated Filters
Two inch pleated media filters shall be
available on all models.
Factory or Field Installed
Options
Clogged Filter/Fan Failure Switch
A 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.
This option is available for
microprocessor controlled units.
Differential Pressure Switches
These sensors allow individual fan failure
and dirty filter indication for
microprocessor controlled units. 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.
Discharge Air Sensing
This option provides true discharge air
sensing in heating models. This sensor is
a status indicator readable through
Tracer™ or Tracker™. This option is
available for microprocessor controlled
units.
Economizer
This accessory shall be 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 actuator and
fixed dry bulb control. The barometric
relief shall provide a pressure operated
damper that shall be gravity closing and
shall prohibit entrance of outside air
during the equipment “off” cycle.
Optional solid state or differential
enthalpy control shall be available for
either factory or field installation. The
economizer arrives in the shipping
position and shall be moved to the
operating position by the installing
contractor.
Electric Heaters
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 240 volt,
wye connected for 480 and 600 volt.
Staging shall be achieved through
ReliaTel™. 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, and shall meet all NEC and CEC
requirements when properly installed.
Power assemblies shall provide single-
point connection. Electric heat modules
shall be UL listed or CSA certified.
