Technical Guide

251933-YTG-V-0913
Johnson Controls Unitary Products 7
• Hinged & Toolless Filter, Motor and Electrical Access
Panels - This option allows for easy access and
maintenance.
NOTE: Knobs are shipped inside the unit to prevent shipping
damage. These must be field installed for tool-less
operation.
• High Static Drive - May include a belt, blower pulley,
motor pulley or a motor change to enhance blower
performance.
Control Options
• BAS - Building Automation System Controls Simplicity
®
INTELLI-Comfort™ Control - The York® Simplicity
®
INTELLI-Comfort™ control is factory installed. It includes a
supply air sensor, a return air sensor, and an outside air
sensor. There are provisions for a field installed dirty filter
indicator switch, an air-proving switch, an Outside Air
Humidity sensor, a Return Air Humidity sensor, an Inside
IAQ sensor, and an Outside Air IAQ sensor. Construction
mode operation, 365-day real time clock with 7 day
programming plus holiday scheduling is built-in. Two
different modes of demand ventilation are achieved through
the INTELLI-Comfort™ using CO
2
sensors. It uses an
inside CO
2
sensor to perform Demand Ventilation. It can
also use an Outside CO
2
sensor to perform Differential
Demand Ventilation. It uses a Patented Comfort Ventilation
algorithm to provide comfortable ventilation air
temperature. The patented economizer-loading algorithm
will protect the equipment when harsh operating conditions
exist. Humidity in the occupied space or return duct can be
monitored and controlled via humidity sensors and the on-
board connection for hot gas re-heat system. It uses the
INTELLI-Start™ algorithm to maximize energy savings by
recovering the building from the Unoccupied Setpoints to
the Occupied Setpoints just in time for the Occupied Time
Period to begin. The Simplicity
®
INTELLI-Comfort™
balances space temperature, ventilation air temperature,
CO
2
and humidity for ultimate comfort.
• Simplicity
®
INTELLI-Comfort™ with Simplicity®LINC
Control - The York® Simplicity
®
INTELLI-Comfort™ with
Simplicity®LINC control is factory installed. It includes all
the features of the INTELLI-Comfort™ control with an
additional control to translate communications from
MODBUS to the BACnet MSTP protocol.
• Novar® BAS Control - The Novar® building automation
system controller is factory installed. Incudes supply air
sensor, return air sensor, dirty filter indicator switch, and
air proving switch.
• Johnson Controls BAS Control - The Johnson Control
YK-UNT-1126 building automation system controller is
factory installed. Includes supply air sensor, return air
sensor, dirty filter indicator switch, and air proving switch.
• CPC BAS Control - The Computer Process Controls
Model 810-3060 ARTC Advanced Rooftop building
automation system controller is factory installed. Includes
supply air sensor, return air sensor, dirty filter indicator
switch and air proving switch.
• Honeywell BAS Control - The Honeywell W7750C
building automation system controller is factory installed.
Includes air supply sensor, return air sensor, dirty filter
indicator switch, and air proving switch.
• York Commercial Comfort System (YCCS) - Provides
rooftop system integration for YCCS single zone and
change-over bypass systems.
Field Installed Accessories
• Single Input Electronic Enthalpy Economizers -
Includes a slide-in / plug-in damper assembly with fully
modulating spring-return motor actuator capable of
introducing up to 100% outdoor air with nominal 1%
leakage type dampers.
The enthalpy system contains one sensor that monitors
the outdoor air and determines when the air is cool
enough and dry enough to provide free cooling.
The rain hood is painted to match the basic unit and must
be field-assembled before installing.
• Motorized Outdoor Air Intake Damper -Includes a slide-
in / plug-in damper assembly with a 2-position, spring
return motor actuator which opens to some pre-set
position whenever the supply air blower is operating and
will drive fully closed when the blower unit shuts down.
The rain hood is painted to match the basic unit and must
be field assembled before installing.
• Electric Heaters - wired for single point power supply.
These nickel chromium heater elements are provided with
limit and automatic reset capability to prevent operation at
excessive temperatures.
• Roof Curbs - Eight and fourteen-inch high roof curbs
provide a water-tight seal between the unit and the finished
roof. These full perimeter curbs meet the requirements of
the National Roofing Contractors Association (NRCA) and
are shipped knocked-down for field assembly.
Roof curbs are designed to fit inside the base rails of the
unit and include both a wood nailing strip and duct hanger
supports.
• High Altitude Natural Gas - Burner orifices and pilot
orifices are provided for proper furnace operation at
altitudes up to 6,000 feet.
• Propane - Burner orifices, pilot orifices and gas valve
parts are provided to convert a natural gas furnace to
propane.
• High Altitude Propane - Burner orifices and pilot orifices
are provided for proper furnace operation at altitudes up
to 6,000 feet. This accessory supplements the basic
propane conversion kit.
• Low Nox Kit - Required to reduce the emission of
nitrogen oxides below 40 nano grams per joule.
• Power Exhaust - Our single input economizer options are
available with power exhaust. Whenever the outdoor air
intake dampers are opened for free cooling, the exhaust
fan will be energized to prevent the conditioned space from
being over-pressurized during economizer operation.