51
PKGP-PRC001-EN
Mechanical
Specifications
Supply and/or Return Air Smoke
Detector
With this option installed, 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 on all 12½-20
tons downflow models.
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 performed in accordance
with ASTM B117.
Frostat
This factory or field installed option is to
be utilized as a safety device. The Frostat
opens when temperatures on the
evaporator coil fall below 10°F. The
temperature will need to rise to 50°F
before closing. This option should be
utilized in low airflow or high outside air
applications.
Novar Unit Controls
Novar rooftop unit controls will be factory
installed and tested. The Novar electronic
thermostat module will interface to the
unit microprocessor and will control the
unit to the desired stage of cooling or
heating. The Novar electronic thermostat
module will monitor the following unit
information: fan failure status, cooing
stage 1 on status, cooling stage 2 on
status, heating on status, clogged filter
status or unit shutdown status, and
discharge air temperature. The Novar
electronic thermostat module will have
the ability to enable the unit mounted
economizer.
Novar Return Air Sensor
This option, when used in conjunction
with Novar Controls, will contain a
factory provided wired zone temperature
sensor located in the return air stream.
Through the Base Utilities 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
Disconnect Switch
Factory installed 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. Factory 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. This option is
available on all 12½-20 tons downflow
models.
Two-Inch Pleated Filters
Two inch pleated media filters shall be
available on all 12½-20 ton models.
